Add volume server integration test suite and CI workflow (#8322)

* docs(volume_server): add integration test development plan

* test(volume_server): add integration harness and profile matrix

* test(volume_server/http): add admin and options integration coverage

* test(volume_server/grpc): add state and status integration coverage

* test(volume_server): auto-build weed binary and harden cluster startup

* test(volume_server/http): add upload read range head delete coverage

* test(volume_server/grpc): expand admin lifecycle and state coverage

* docs(volume_server): update progress tracker for implemented tests

* test(volume_server/http): cover if-none-match and invalid-range branches

* test(volume_server/grpc): add batch delete integration coverage

* docs(volume_server): log latest HTTP and gRPC test coverage

* ci(volume_server): run volume server integration tests in github actions

* test(volume_server/grpc): add needle status configure ping and leave coverage

* docs(volume_server): record additional grpc coverage progress

* test(volume_server/grpc): add vacuum integration coverage

* docs(volume_server): record vacuum test coverage progress

* test(volume_server/grpc): add read and write needle blob error-path coverage

* docs(volume_server): record data rw grpc coverage progress

* test(volume_server/http): add jwt auth integration coverage

* test(volume_server/grpc): add sync copy and stream error-path coverage

* docs(volume_server): record jwt and sync/copy test coverage

* test(volume_server/grpc): add scrub and query integration coverage

* test(volume_server/grpc): add volume tail sender and receiver coverage

* docs(volume_server): record scrub query and tail test progress

* test(volume_server/grpc): add readonly writable and collection lifecycle coverage

* test(volume_server/http): add public-port cors and method parity coverage

* test(volume_server/grpc): add blob meta and read-all success path coverage

* test(volume_server/grpc): expand scrub and query variation coverage

* test(volume_server/grpc): add tiering and remote fetch error-path coverage

* test(volume_server/http): add unchanged write and delete edge-case coverage

* test(volume_server/grpc): add ping unknown and unreachable target coverage

* test(volume_server/grpc): add volume delete only-empty variation coverage

* test(volume_server/http): add jwt fid-mismatch auth coverage

* test(volume_server/grpc): add scrub ec auto-select empty coverage

* test(volume_server/grpc): stabilize ping timestamp assertion

* docs(volume_server): update integration coverage progress log

* test(volume_server/grpc): add tier remote backend and config variation coverage

* docs(volume_server): record tier remote variation progress

* test(volume_server/grpc): add incremental copy and receive-file protocol coverage

* test(volume_server/http): add read path shape and if-modified-since coverage

* test(volume_server/grpc): add copy-file compaction and receive-file success coverage

* test(volume_server/http): add passthrough headers and static asset coverage

* test(volume_server/grpc): add ping filer unreachable coverage

* docs(volume_server): record copy receive and http variant progress

* test(volume_server/grpc): add erasure coding maintenance and missing-path coverage

* docs(volume_server): record initial erasure coding rpc coverage

* test(volume_server/http): add multi-range multipart response coverage

* docs(volume_server): record multi-range http coverage progress

* test(volume_server/grpc): add query empty-stripe no-match coverage

* docs(volume_server): record query no-match stream behavior coverage

* test(volume_server/http): add upload throttling timeout and replicate bypass coverage

* docs(volume_server): record upload throttling coverage progress

* test(volume_server/http): add download throttling timeout coverage

* docs(volume_server): record download throttling coverage progress

* test(volume_server/http): add jwt wrong-cookie fid mismatch coverage

* docs(volume_server): record jwt wrong-cookie mismatch coverage

* test(volume_server/http): add jwt expired-token rejection coverage

* docs(volume_server): record jwt expired-token coverage

* test(volume_server/http): add jwt query and cookie transport coverage

* docs(volume_server): record jwt token transport coverage

* test(volume_server/http): add jwt token-source precedence coverage

* docs(volume_server): record jwt token-source precedence coverage

* test(volume_server/http): add jwt header-over-cookie precedence coverage

* docs(volume_server): record jwt header cookie precedence coverage

* test(volume_server/http): add jwt query-over-cookie precedence coverage

* docs(volume_server): record jwt query cookie precedence coverage

* test(volume_server/grpc): add setstate version mismatch and nil-state coverage

* docs(volume_server): record setstate validation coverage

* test(volume_server/grpc): add readonly persist-true lifecycle coverage

* docs(volume_server): record readonly persist variation coverage

* test(volume_server/http): add options origin cors header coverage

* docs(volume_server): record options origin cors coverage

* test(volume_server/http): add trace unsupported-method parity coverage

* docs(volume_server): record trace method parity coverage

* test(volume_server/grpc): add batch delete cookie-check variation coverage

* docs(volume_server): record batch delete cookie-check coverage

* test(volume_server/grpc): add admin lifecycle missing and maintenance variants

* docs(volume_server): record admin lifecycle edge-case coverage

* test(volume_server/grpc): add mixed batch delete status matrix coverage

* docs(volume_server): record mixed batch delete matrix coverage

* test(volume_server/http): add jwt-profile ui access gating coverage

* docs(volume_server): record jwt ui-gating http coverage

* test(volume_server/http): add propfind unsupported-method parity coverage

* docs(volume_server): record propfind method parity coverage

* test(volume_server/grpc): add volume configure success and rollback-path coverage

* docs(volume_server): record volume configure branch coverage

* test(volume_server/grpc): add volume needle status missing-path coverage

* docs(volume_server): record volume needle status error-path coverage

* test(volume_server/http): add readDeleted query behavior coverage

* docs(volume_server): record readDeleted http behavior coverage

* test(volume_server/http): add delete ts override parity coverage

* docs(volume_server): record delete ts parity coverage

* test(volume_server/grpc): add invalid blob/meta offset coverage

* docs(volume_server): record invalid blob/meta offset coverage

* test(volume_server/grpc): add read-all mixed volume abort coverage

* docs(volume_server): record read-all mixed-volume abort coverage

* test(volume_server/http): assert head response body parity

* docs(volume_server): record head body parity assertion

* test(volume_server/grpc): assert status state and memory payload completeness

* docs(volume_server): record volume server status payload coverage

* test(volume_server/grpc): add batch delete chunk-manifest rejection coverage

* docs(volume_server): record batch delete chunk-manifest coverage

* test(volume_server/grpc): add query cookie-mismatch eof parity coverage

* docs(volume_server): record query cookie-mismatch parity coverage

* test(volume_server/grpc): add ping master success target coverage

* docs(volume_server): record ping master success coverage

* test(volume_server/http): add head if-none-match conditional parity

* docs(volume_server): record head if-none-match parity coverage

* test(volume_server/http): add head if-modified-since parity coverage

* docs(volume_server): record head if-modified-since parity coverage

* test(volume_server/http): add connect unsupported-method parity coverage

* docs(volume_server): record connect method parity coverage

* test(volume_server/http): assert options allow-headers cors parity

* docs(volume_server): record options allow-headers coverage

* test(volume_server/framework): add dual volume cluster integration harness

* test(volume_server/http): add missing-local read mode proxy redirect local coverage

* docs(volume_server): record read mode missing-local matrix coverage

* test(volume_server/http): add download over-limit replica proxy fallback coverage

* docs(volume_server): record download replica fallback coverage

* test(volume_server/http): add missing-local readDeleted proxy redirect parity coverage

* docs(volume_server): record missing-local readDeleted mode coverage

* test(volume_server/framework): add single-volume cluster with filer harness

* test(volume_server/grpc): add ping filer success target coverage

* docs(volume_server): record ping filer success coverage

* test(volume_server/http): add proxied-loop guard download timeout coverage

* docs(volume_server): record proxied-loop download coverage

* test(volume_server/http): add disabled upload and download limit coverage

* docs(volume_server): record disabled throttling path coverage

* test(volume_server/grpc): add idempotent volume server leave coverage

* docs(volume_server): record leave idempotence coverage

* test(volume_server/http): add redirect collection query preservation coverage

* docs(volume_server): record redirect collection query coverage

* test(volume_server/http): assert admin server headers on status and health

* docs(volume_server): record admin server header coverage

* test(volume_server/http): assert healthz request-id echo parity

* docs(volume_server): record healthz request-id parity coverage

* test(volume_server/http): add over-limit invalid-vid download branch coverage

* docs(volume_server): record over-limit invalid-vid branch coverage

* test(volume_server/http): add public-port static asset coverage

* docs(volume_server): record public static endpoint coverage

* test(volume_server/http): add public head method parity coverage

* docs(volume_server): record public head parity coverage

* test(volume_server/http): add throttling wait-then-proceed path coverage

* docs(volume_server): record throttling wait-then-proceed coverage

* test(volume_server/http): add read cookie-mismatch not-found coverage

* docs(volume_server): record read cookie-mismatch coverage

* test(volume_server/http): add throttling timeout-recovery coverage

* docs(volume_server): record throttling timeout-recovery coverage

* test(volume_server/grpc): add ec generate mount info unmount lifecycle coverage

* docs(volume_server): record ec positive lifecycle coverage

* test(volume_server/grpc): add ec shard read and blob delete lifecycle coverage

* docs(volume_server): record ec shard read/blob delete lifecycle coverage

* test(volume_server/grpc): add ec rebuild and to-volume error branch coverage

* docs(volume_server): record ec rebuild and to-volume branch coverage

* test(volume_server/grpc): add ec shards-to-volume success roundtrip coverage

* docs(volume_server): record ec shards-to-volume success coverage

* test(volume_server/grpc): add ec receive and copy-file missing-source coverage

* docs(volume_server): record ec receive and copy-file coverage

* test(volume_server/grpc): add ec last-shard delete cleanup coverage

* docs(volume_server): record ec last-shard delete cleanup coverage

* test(volume_server/grpc): add volume copy success path coverage

* docs(volume_server): record volume copy success coverage

* test(volume_server/grpc): add volume copy overwrite-destination coverage

* docs(volume_server): record volume copy overwrite coverage

* test(volume_server/http): add write error-path variant coverage

* docs(volume_server): record http write error-path coverage

* test(volume_server/http): add conditional header precedence coverage

* docs(volume_server): record conditional header precedence coverage

* test(volume_server/http): add oversized combined range guard coverage

* docs(volume_server): record oversized range guard coverage

* test(volume_server/http): add image resize and crop read coverage

* docs(volume_server): record image transform coverage

* test(volume_server/http): add chunk-manifest expansion and bypass coverage

* docs(volume_server): record chunk-manifest read coverage

* test(volume_server/http): add compressed read encoding matrix coverage

* docs(volume_server): record compressed read matrix coverage

* test(volume_server/grpc): add tail receiver source replication coverage

* docs(volume_server): record tail receiver replication coverage

* test(volume_server/grpc): add tail sender large-needle chunking coverage

* docs(volume_server): record tail sender chunking coverage

* test(volume_server/grpc): add ec-backed volume needle status coverage

* docs(volume_server): record ec-backed needle status coverage

* test(volume_server/grpc): add ec shard copy from peer success coverage

* docs(volume_server): record ec shard copy success coverage

* test(volume_server/http): add chunk-manifest delete child cleanup coverage

* docs(volume_server): record chunk-manifest delete cleanup coverage

* test(volume_server/http): add chunk-manifest delete failure-path coverage

* docs(volume_server): record chunk-manifest delete failure coverage

* test(volume_server/grpc): add ec shard copy source-unavailable coverage

* docs(volume_server): record ec shard copy source-unavailable coverage

* parallel

.github/workflows/volume-server-integration-tests.yml

@@ -0,0 +1,122 @@
+name: "Volume Server Integration Tests"
+
+on:
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'test/volume_server/**'
+      - 'weed/server/**'
+      - 'weed/storage/**'
+      - 'weed/pb/volume_server.proto'
+      - 'weed/pb/volume_server_pb/**'
+      - '.github/workflows/volume-server-integration-tests.yml'
+  push:
+    branches: [ master, main ]
+    paths:
+      - 'test/volume_server/**'
+      - 'weed/server/**'
+      - 'weed/storage/**'
+      - 'weed/pb/volume_server.proto'
+      - 'weed/pb/volume_server_pb/**'
+      - '.github/workflows/volume-server-integration-tests.yml'
+
+concurrency:
+  group: ${{ github.head_ref || github.ref }}/volume-server-integration-tests
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+
+env:
+  GO_VERSION: '1.24'
+  TEST_TIMEOUT: '30m'
+
+jobs:
+  volume-server-integration-tests:
+    name: Volume Server Integration Tests (${{ matrix.test-type }} - Shard ${{ matrix.shard }})
+    runs-on: ubuntu-22.04
+    timeout-minutes: 45
+    strategy:
+      fail-fast: false
+      matrix:
+        test-type: [grpc, http]
+        shard: [1, 2, 3]
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Set up Go ${{ env.GO_VERSION }}
+        uses: actions/setup-go@v6
+        with:
+          go-version: ${{ env.GO_VERSION }}
+
+      - name: Build SeaweedFS binary
+        run: |
+          cd weed
+          go build -o weed .
+          chmod +x weed
+          ./weed version
+
+      - name: Run volume server integration tests
+        env:
+          WEED_BINARY: ${{ github.workspace }}/weed/weed
+        run: |
+          if [ "${{ matrix.test-type }}" == "grpc" ]; then
+            if [ "${{ matrix.shard }}" == "1" ]; then
+              TEST_PATTERN="^Test[A-H]"
+            elif [ "${{ matrix.shard }}" == "2" ]; then
+              TEST_PATTERN="^Test[I-S]"
+            else
+              TEST_PATTERN="^Test[T-Z]"
+            fi
+          else
+            if [ "${{ matrix.shard }}" == "1" ]; then
+              TEST_PATTERN="^Test[A-G]"
+            elif [ "${{ matrix.shard }}" == "2" ]; then
+              TEST_PATTERN="^Test[H-R]"
+            else
+              TEST_PATTERN="^Test[S-Z]"
+            fi
+          fi
+          echo "Running volume server integration tests for ${{ matrix.test-type }} (Shard ${{ matrix.shard }}, pattern: ${TEST_PATTERN})..."
+          go test -v -count=1 -timeout=${{ env.TEST_TIMEOUT }} ./test/volume_server/${{ matrix.test-type }}/... -run "${TEST_PATTERN}"
+
+      - name: Collect logs on failure
+        if: failure()
+        run: |
+          mkdir -p /tmp/volume-server-it-logs
+          find /tmp -maxdepth 1 -type d -name "seaweedfs_volume_server_it_*" -print -exec cp -r {} /tmp/volume-server-it-logs/ \; || true
+
+      - name: Archive logs on failure
+        if: failure()
+        uses: actions/upload-artifact@v6
+        with:
+          name: volume-server-integration-test-logs
+          path: /tmp/volume-server-it-logs/
+          if-no-files-found: warn
+          retention-days: 7
+
+      - name: Test summary
+        if: always()
+        run: |
+          if [ "${{ matrix.test-type }}" == "grpc" ]; then
+            if [ "${{ matrix.shard }}" == "1" ]; then
+              TEST_PATTERN="^Test[A-H]"
+            elif [ "${{ matrix.shard }}" == "2" ]; then
+              TEST_PATTERN="^Test[I-S]"
+            else
+              TEST_PATTERN="^Test[T-Z]"
+            fi
+          else
+            if [ "${{ matrix.shard }}" == "1" ]; then
+              TEST_PATTERN="^Test[A-G]"
+            elif [ "${{ matrix.shard }}" == "2" ]; then
+              TEST_PATTERN="^Test[H-R]"
+            else
+              TEST_PATTERN="^Test[S-Z]"
+            fi
+          fi
+          echo "## Volume Server Integration Test Summary (${{ matrix.test-type }} - Shard ${{ matrix.shard }})" >> "$GITHUB_STEP_SUMMARY"
+          echo "- Suite: test/volume_server/${{ matrix.test-type }} (Pattern: ${TEST_PATTERN})" >> "$GITHUB_STEP_SUMMARY"
+          echo "- Command: go test -v -count=1 -timeout=${{ env.TEST_TIMEOUT }} ./test/volume_server/${{ matrix.test-type }}/... -run \"${TEST_PATTERN}\"" >> "$GITHUB_STEP_SUMMARY"

test/volume_server/Makefile

@@ -0,0 +1,7 @@
+.PHONY: test-volume-server test-volume-server-short
+
+test-volume-server:
+	go test ./test/volume_server/... -v
+
+test-volume-server-short:
+	go test ./test/volume_server/... -short -v

test/volume_server/README.md

@@ -0,0 +1,27 @@
+# Volume Server Integration Tests
+
+This package contains integration tests for SeaweedFS volume server HTTP and gRPC APIs.
+
+## Run Tests
+
+Run tests from repo root:
+
+```bash
+go test ./test/volume_server/... -v
+```
+
+If a `weed` binary is not found, the harness will build one automatically.
+
+## Optional environment variables
+
+- `WEED_BINARY`: explicit path to the `weed` executable (disables auto-build).
+- `VOLUME_SERVER_IT_KEEP_LOGS=1`: keep temporary test directories and process logs.
+
+## Current scope (Phase 0)
+
+- Shared cluster/framework utilities
+- Matrix profile definitions
+- Initial HTTP admin endpoint checks
+- Initial gRPC state/status checks
+
+More API coverage is tracked in `/Users/chris/dev/seaweedfs2/test/volume_server/DEV_PLAN.md`.

test/volume_server/framework/cluster.go

@@ -0,0 +1,442 @@
+package framework
+
+import (
+	"bufio"
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+const (
+	defaultWaitTimeout    = 30 * time.Second
+	defaultWaitTick       = 200 * time.Millisecond
+	testVolumeSizeLimitMB = 32
+)
+
+// Cluster is a lightweight SeaweedFS master + one volume server test harness.
+type Cluster struct {
+	testingTB testing.TB
+	profile   matrix.Profile
+
+	weedBinary string
+	baseDir    string
+	configDir  string
+	logsDir    string
+	keepLogs   bool
+
+	masterPort     int
+	masterGrpcPort int
+	volumePort     int
+	volumeGrpcPort int
+	volumePubPort  int
+
+	masterCmd *exec.Cmd
+	volumeCmd *exec.Cmd
+
+	cleanupOnce sync.Once
+}
+
+// StartSingleVolumeCluster boots one master and one volume server.
+func StartSingleVolumeCluster(t testing.TB, profile matrix.Profile) *Cluster {
+	t.Helper()
+
+	weedBinary, err := FindOrBuildWeedBinary()
+	if err != nil {
+		t.Fatalf("resolve weed binary: %v", err)
+	}
+
+	baseDir, keepLogs, err := newWorkDir()
+	if err != nil {
+		t.Fatalf("create temp test directory: %v", err)
+	}
+
+	configDir := filepath.Join(baseDir, "config")
+	logsDir := filepath.Join(baseDir, "logs")
+	masterDataDir := filepath.Join(baseDir, "master")
+	volumeDataDir := filepath.Join(baseDir, "volume")
+	for _, dir := range []string{configDir, logsDir, masterDataDir, volumeDataDir} {
+		if mkErr := os.MkdirAll(dir, 0o755); mkErr != nil {
+			t.Fatalf("create %s: %v", dir, mkErr)
+		}
+	}
+
+	if err = writeSecurityConfig(configDir, profile); err != nil {
+		t.Fatalf("write security config: %v", err)
+	}
+
+	masterPort, masterGrpcPort, err := allocateMasterPortPair()
+	if err != nil {
+		t.Fatalf("allocate master port pair: %v", err)
+	}
+
+	ports, err := allocatePorts(3)
+	if err != nil {
+		t.Fatalf("allocate ports: %v", err)
+	}
+
+	c := &Cluster{
+		testingTB:      t,
+		profile:        profile,
+		weedBinary:     weedBinary,
+		baseDir:        baseDir,
+		configDir:      configDir,
+		logsDir:        logsDir,
+		keepLogs:       keepLogs,
+		masterPort:     masterPort,
+		masterGrpcPort: masterGrpcPort,
+		volumePort:     ports[0],
+		volumeGrpcPort: ports[1],
+		volumePubPort:  ports[0],
+	}
+	if profile.SplitPublicPort {
+		c.volumePubPort = ports[2]
+	}
+
+	if err = c.startMaster(masterDataDir); err != nil {
+		c.Stop()
+		t.Fatalf("start master: %v", err)
+	}
+	if err = c.waitForHTTP(c.MasterURL() + "/dir/status"); err != nil {
+		masterLog := c.tailLog("master.log")
+		c.Stop()
+		t.Fatalf("wait for master readiness: %v\nmaster log tail:\n%s", err, masterLog)
+	}
+
+	if err = c.startVolume(volumeDataDir); err != nil {
+		masterLog := c.tailLog("master.log")
+		c.Stop()
+		t.Fatalf("start volume: %v\nmaster log tail:\n%s", err, masterLog)
+	}
+	if err = c.waitForHTTP(c.VolumeAdminURL() + "/status"); err != nil {
+		volumeLog := c.tailLog("volume.log")
+		c.Stop()
+		t.Fatalf("wait for volume readiness: %v\nvolume log tail:\n%s", err, volumeLog)
+	}
+	if err = c.waitForTCP(c.VolumeGRPCAddress()); err != nil {
+		volumeLog := c.tailLog("volume.log")
+		c.Stop()
+		t.Fatalf("wait for volume grpc readiness: %v\nvolume log tail:\n%s", err, volumeLog)
+	}
+
+	t.Cleanup(func() {
+		c.Stop()
+	})
+
+	return c
+}
+
+// Stop terminates all processes and cleans temporary files.
+func (c *Cluster) Stop() {
+	if c == nil {
+		return
+	}
+	c.cleanupOnce.Do(func() {
+		stopProcess(c.volumeCmd)
+		stopProcess(c.masterCmd)
+		if !c.keepLogs && !c.testingTB.Failed() {
+			_ = os.RemoveAll(c.baseDir)
+		} else if c.baseDir != "" {
+			c.testingTB.Logf("volume server integration logs kept at %s", c.baseDir)
+		}
+	})
+}
+
+func (c *Cluster) startMaster(dataDir string) error {
+	logFile, err := os.Create(filepath.Join(c.logsDir, "master.log"))
+	if err != nil {
+		return err
+	}
+
+	args := []string{
+		"-config_dir=" + c.configDir,
+		"master",
+		"-ip=127.0.0.1",
+		"-port=" + strconv.Itoa(c.masterPort),
+		"-port.grpc=" + strconv.Itoa(c.masterGrpcPort),
+		"-mdir=" + dataDir,
+		"-peers=none",
+		"-volumeSizeLimitMB=" + strconv.Itoa(testVolumeSizeLimitMB),
+		"-defaultReplication=000",
+	}
+
+	c.masterCmd = exec.Command(c.weedBinary, args...)
+	c.masterCmd.Dir = c.baseDir
+	c.masterCmd.Stdout = logFile
+	c.masterCmd.Stderr = logFile
+	return c.masterCmd.Start()
+}
+
+func (c *Cluster) startVolume(dataDir string) error {
+	logFile, err := os.Create(filepath.Join(c.logsDir, "volume.log"))
+	if err != nil {
+		return err
+	}
+
+	args := []string{
+		"-config_dir=" + c.configDir,
+		"volume",
+		"-ip=127.0.0.1",
+		"-port=" + strconv.Itoa(c.volumePort),
+		"-port.grpc=" + strconv.Itoa(c.volumeGrpcPort),
+		"-port.public=" + strconv.Itoa(c.volumePubPort),
+		"-dir=" + dataDir,
+		"-max=16",
+		"-master=127.0.0.1:" + strconv.Itoa(c.masterPort),
+		"-readMode=" + c.profile.ReadMode,
+		"-concurrentUploadLimitMB=" + strconv.Itoa(c.profile.ConcurrentUploadLimitMB),
+		"-concurrentDownloadLimitMB=" + strconv.Itoa(c.profile.ConcurrentDownloadLimitMB),
+	}
+	if c.profile.InflightUploadTimeout > 0 {
+		args = append(args, "-inflightUploadDataTimeout="+c.profile.InflightUploadTimeout.String())
+	}
+	if c.profile.InflightDownloadTimeout > 0 {
+		args = append(args, "-inflightDownloadDataTimeout="+c.profile.InflightDownloadTimeout.String())
+	}
+
+	c.volumeCmd = exec.Command(c.weedBinary, args...)
+	c.volumeCmd.Dir = c.baseDir
+	c.volumeCmd.Stdout = logFile
+	c.volumeCmd.Stderr = logFile
+	return c.volumeCmd.Start()
+}
+
+func (c *Cluster) waitForHTTP(url string) error {
+	client := &http.Client{Timeout: 1 * time.Second}
+	deadline := time.Now().Add(defaultWaitTimeout)
+	for time.Now().Before(deadline) {
+		resp, err := client.Get(url)
+		if err == nil {
+			_, _ = io.Copy(io.Discard, resp.Body)
+			resp.Body.Close()
+			if resp.StatusCode < 500 {
+				return nil
+			}
+		}
+		time.Sleep(defaultWaitTick)
+	}
+	return fmt.Errorf("timed out waiting for %s", url)
+}
+
+func (c *Cluster) waitForTCP(addr string) error {
+	deadline := time.Now().Add(defaultWaitTimeout)
+	for time.Now().Before(deadline) {
+		conn, err := net.DialTimeout("tcp", addr, time.Second)
+		if err == nil {
+			_ = conn.Close()
+			return nil
+		}
+		time.Sleep(defaultWaitTick)
+	}
+	return fmt.Errorf("timed out waiting for tcp %s", addr)
+}
+
+func stopProcess(cmd *exec.Cmd) {
+	if cmd == nil || cmd.Process == nil {
+		return
+	}
+
+	_ = cmd.Process.Signal(os.Interrupt)
+	done := make(chan error, 1)
+	go func() {
+		done <- cmd.Wait()
+	}()
+
+	select {
+	case <-time.After(10 * time.Second):
+		_ = cmd.Process.Kill()
+		<-done
+	case <-done:
+	}
+}
+
+func allocatePorts(count int) ([]int, error) {
+	listeners := make([]net.Listener, 0, count)
+	ports := make([]int, 0, count)
+	for i := 0; i < count; i++ {
+		l, err := net.Listen("tcp", "127.0.0.1:0")
+		if err != nil {
+			for _, ll := range listeners {
+				_ = ll.Close()
+			}
+			return nil, err
+		}
+		listeners = append(listeners, l)
+		ports = append(ports, l.Addr().(*net.TCPAddr).Port)
+	}
+	for _, l := range listeners {
+		_ = l.Close()
+	}
+	return ports, nil
+}
+
+func allocateMasterPortPair() (int, int, error) {
+	for masterPort := 10000; masterPort <= 55535; masterPort++ {
+		masterGrpcPort := masterPort + 10000
+		l1, err := net.Listen("tcp", net.JoinHostPort("127.0.0.1", strconv.Itoa(masterPort)))
+		if err != nil {
+			continue
+		}
+		l2, err := net.Listen("tcp", net.JoinHostPort("127.0.0.1", strconv.Itoa(masterGrpcPort)))
+		if err != nil {
+			_ = l1.Close()
+			continue
+		}
+		_ = l2.Close()
+		_ = l1.Close()
+		return masterPort, masterGrpcPort, nil
+	}
+	return 0, 0, errors.New("unable to find available master port pair")
+}
+
+func newWorkDir() (dir string, keepLogs bool, err error) {
+	keepLogs = os.Getenv("VOLUME_SERVER_IT_KEEP_LOGS") == "1"
+	dir, err = os.MkdirTemp("", "seaweedfs_volume_server_it_")
+	return dir, keepLogs, err
+}
+
+func writeSecurityConfig(configDir string, profile matrix.Profile) error {
+	var b strings.Builder
+	if profile.EnableJWT {
+		if profile.JWTSigningKey == "" || profile.JWTReadKey == "" {
+			return errors.New("jwt profile requires both write and read keys")
+		}
+		b.WriteString("[jwt.signing]\n")
+		b.WriteString("key = \"")
+		b.WriteString(profile.JWTSigningKey)
+		b.WriteString("\"\n")
+		b.WriteString("expires_after_seconds = 60\n\n")
+
+		b.WriteString("[jwt.signing.read]\n")
+		b.WriteString("key = \"")
+		b.WriteString(profile.JWTReadKey)
+		b.WriteString("\"\n")
+		b.WriteString("expires_after_seconds = 60\n")
+	}
+	if b.Len() == 0 {
+		b.WriteString("# optional security config generated for integration tests\n")
+	}
+	return os.WriteFile(filepath.Join(configDir, "security.toml"), []byte(b.String()), 0o644)
+}
+
+// FindOrBuildWeedBinary returns an executable weed binary, building one when needed.
+func FindOrBuildWeedBinary() (string, error) {
+	if fromEnv := os.Getenv("WEED_BINARY"); fromEnv != "" {
+		if isExecutableFile(fromEnv) {
+			return fromEnv, nil
+		}
+		return "", fmt.Errorf("WEED_BINARY is set but not executable: %s", fromEnv)
+	}
+
+	repoRoot := ""
+	if _, file, _, ok := runtime.Caller(0); ok {
+		repoRoot = filepath.Clean(filepath.Join(filepath.Dir(file), "..", "..", ".."))
+		candidate := filepath.Join(repoRoot, "weed", "weed")
+		if isExecutableFile(candidate) {
+			return candidate, nil
+		}
+	}
+
+	if repoRoot == "" {
+		return "", errors.New("unable to detect repository root")
+	}
+
+	binDir := filepath.Join(os.TempDir(), "seaweedfs_volume_server_it_bin")
+	if err := os.MkdirAll(binDir, 0o755); err != nil {
+		return "", fmt.Errorf("create binary directory %s: %w", binDir, err)
+	}
+	binPath := filepath.Join(binDir, "weed")
+	if isExecutableFile(binPath) {
+		return binPath, nil
+	}
+
+	cmd := exec.Command("go", "build", "-o", binPath, ".")
+	cmd.Dir = filepath.Join(repoRoot, "weed")
+	var out bytes.Buffer
+	cmd.Stdout = &out
+	cmd.Stderr = &out
+	if err := cmd.Run(); err != nil {
+		return "", fmt.Errorf("build weed binary: %w\n%s", err, out.String())
+	}
+	if !isExecutableFile(binPath) {
+		return "", fmt.Errorf("built weed binary is not executable: %s", binPath)
+	}
+	return binPath, nil
+}
+
+func isExecutableFile(path string) bool {
+	info, err := os.Stat(path)
+	if err != nil || info.IsDir() {
+		return false
+	}
+	mode := info.Mode().Perm()
+	return mode&0o111 != 0
+}
+
+func (c *Cluster) tailLog(logName string) string {
+	f, err := os.Open(filepath.Join(c.logsDir, logName))
+	if err != nil {
+		return ""
+	}
+	defer f.Close()
+
+	scanner := bufio.NewScanner(f)
+	lines := make([]string, 0, 40)
+	for scanner.Scan() {
+		lines = append(lines, scanner.Text())
+		if len(lines) > 40 {
+			lines = lines[1:]
+		}
+	}
+	return strings.Join(lines, "\n")
+}
+
+func (c *Cluster) MasterAddress() string {
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.masterPort))
+}
+
+func (c *Cluster) VolumeAdminAddress() string {
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.volumePort))
+}
+
+func (c *Cluster) VolumePublicAddress() string {
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.volumePubPort))
+}
+
+func (c *Cluster) VolumeGRPCAddress() string {
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.volumeGrpcPort))
+}
+
+// VolumeServerAddress returns SeaweedFS server address format: ip:httpPort.grpcPort
+func (c *Cluster) VolumeServerAddress() string {
+	return fmt.Sprintf("%s.%d", c.VolumeAdminAddress(), c.volumeGrpcPort)
+}
+
+func (c *Cluster) MasterURL() string {
+	return "http://" + c.MasterAddress()
+}
+
+func (c *Cluster) VolumeAdminURL() string {
+	return "http://" + c.VolumeAdminAddress()
+}
+
+func (c *Cluster) VolumePublicURL() string {
+	return "http://" + c.VolumePublicAddress()
+}
+
+func (c *Cluster) BaseDir() string {
+	return c.baseDir
+}

test/volume_server/framework/cluster_dual.go

@@ -0,0 +1,293 @@
+package framework
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strconv"
+	"sync"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+type DualVolumeCluster struct {
+	testingTB testing.TB
+	profile   matrix.Profile
+
+	weedBinary string
+	baseDir    string
+	configDir  string
+	logsDir    string
+	keepLogs   bool
+
+	masterPort     int
+	masterGrpcPort int
+
+	volumePort0     int
+	volumeGrpcPort0 int
+	volumePubPort0  int
+	volumePort1     int
+	volumeGrpcPort1 int
+	volumePubPort1  int
+
+	masterCmd *exec.Cmd
+	volumeCmd0 *exec.Cmd
+	volumeCmd1 *exec.Cmd
+
+	cleanupOnce sync.Once
+}
+
+func StartDualVolumeCluster(t testing.TB, profile matrix.Profile) *DualVolumeCluster {
+	t.Helper()
+
+	weedBinary, err := FindOrBuildWeedBinary()
+	if err != nil {
+		t.Fatalf("resolve weed binary: %v", err)
+	}
+
+	baseDir, keepLogs, err := newWorkDir()
+	if err != nil {
+		t.Fatalf("create temp test directory: %v", err)
+	}
+
+	configDir := filepath.Join(baseDir, "config")
+	logsDir := filepath.Join(baseDir, "logs")
+	masterDataDir := filepath.Join(baseDir, "master")
+	volumeDataDir0 := filepath.Join(baseDir, "volume0")
+	volumeDataDir1 := filepath.Join(baseDir, "volume1")
+	for _, dir := range []string{configDir, logsDir, masterDataDir, volumeDataDir0, volumeDataDir1} {
+		if mkErr := os.MkdirAll(dir, 0o755); mkErr != nil {
+			t.Fatalf("create %s: %v", dir, mkErr)
+		}
+	}
+
+	if err = writeSecurityConfig(configDir, profile); err != nil {
+		t.Fatalf("write security config: %v", err)
+	}
+
+	masterPort, masterGrpcPort, err := allocateMasterPortPair()
+	if err != nil {
+		t.Fatalf("allocate master port pair: %v", err)
+	}
+
+	ports, err := allocatePorts(6)
+	if err != nil {
+		t.Fatalf("allocate volume ports: %v", err)
+	}
+
+	c := &DualVolumeCluster{
+		testingTB:      t,
+		profile:        profile,
+		weedBinary:     weedBinary,
+		baseDir:        baseDir,
+		configDir:      configDir,
+		logsDir:        logsDir,
+		keepLogs:       keepLogs,
+		masterPort:     masterPort,
+		masterGrpcPort: masterGrpcPort,
+		volumePort0:    ports[0],
+		volumeGrpcPort0: ports[1],
+		volumePubPort0: ports[0],
+		volumePort1:    ports[2],
+		volumeGrpcPort1: ports[3],
+		volumePubPort1: ports[2],
+	}
+	if profile.SplitPublicPort {
+		c.volumePubPort0 = ports[4]
+		c.volumePubPort1 = ports[5]
+	}
+
+	if err = c.startMaster(masterDataDir); err != nil {
+		c.Stop()
+		t.Fatalf("start master: %v", err)
+	}
+	if err = c.waitForHTTP(c.MasterURL() + "/dir/status"); err != nil {
+		masterLog := c.tailLog("master.log")
+		c.Stop()
+		t.Fatalf("wait for master readiness: %v\nmaster log tail:\n%s", err, masterLog)
+	}
+
+	if err = c.startVolume(0, volumeDataDir0); err != nil {
+		masterLog := c.tailLog("master.log")
+		c.Stop()
+		t.Fatalf("start first volume server: %v\nmaster log tail:\n%s", err, masterLog)
+	}
+	if err = c.waitForHTTP(c.VolumeAdminURL(0) + "/status"); err != nil {
+		volumeLog := c.tailLog("volume0.log")
+		c.Stop()
+		t.Fatalf("wait for first volume readiness: %v\nvolume log tail:\n%s", err, volumeLog)
+	}
+	if err = c.waitForTCP(c.VolumeGRPCAddress(0)); err != nil {
+		volumeLog := c.tailLog("volume0.log")
+		c.Stop()
+		t.Fatalf("wait for first volume grpc readiness: %v\nvolume log tail:\n%s", err, volumeLog)
+	}
+
+	if err = c.startVolume(1, volumeDataDir1); err != nil {
+		volumeLog := c.tailLog("volume0.log")
+		c.Stop()
+		t.Fatalf("start second volume server: %v\nfirst volume log tail:\n%s", err, volumeLog)
+	}
+	if err = c.waitForHTTP(c.VolumeAdminURL(1) + "/status"); err != nil {
+		volumeLog := c.tailLog("volume1.log")
+		c.Stop()
+		t.Fatalf("wait for second volume readiness: %v\nvolume log tail:\n%s", err, volumeLog)
+	}
+	if err = c.waitForTCP(c.VolumeGRPCAddress(1)); err != nil {
+		volumeLog := c.tailLog("volume1.log")
+		c.Stop()
+		t.Fatalf("wait for second volume grpc readiness: %v\nvolume log tail:\n%s", err, volumeLog)
+	}
+
+	t.Cleanup(func() {
+		c.Stop()
+	})
+
+	return c
+}
+
+func (c *DualVolumeCluster) Stop() {
+	if c == nil {
+		return
+	}
+	c.cleanupOnce.Do(func() {
+		stopProcess(c.volumeCmd1)
+		stopProcess(c.volumeCmd0)
+		stopProcess(c.masterCmd)
+		if !c.keepLogs && !c.testingTB.Failed() {
+			_ = os.RemoveAll(c.baseDir)
+		} else if c.baseDir != "" {
+			c.testingTB.Logf("volume server integration logs kept at %s", c.baseDir)
+		}
+	})
+}
+
+func (c *DualVolumeCluster) startMaster(dataDir string) error {
+	logFile, err := os.Create(filepath.Join(c.logsDir, "master.log"))
+	if err != nil {
+		return err
+	}
+
+	args := []string{
+		"-config_dir=" + c.configDir,
+		"master",
+		"-ip=127.0.0.1",
+		"-port=" + strconv.Itoa(c.masterPort),
+		"-port.grpc=" + strconv.Itoa(c.masterGrpcPort),
+		"-mdir=" + dataDir,
+		"-peers=none",
+		"-volumeSizeLimitMB=" + strconv.Itoa(testVolumeSizeLimitMB),
+		"-defaultReplication=000",
+	}
+
+	c.masterCmd = exec.Command(c.weedBinary, args...)
+	c.masterCmd.Dir = c.baseDir
+	c.masterCmd.Stdout = logFile
+	c.masterCmd.Stderr = logFile
+	return c.masterCmd.Start()
+}
+
+func (c *DualVolumeCluster) startVolume(index int, dataDir string) error {
+	logName := fmt.Sprintf("volume%d.log", index)
+	logFile, err := os.Create(filepath.Join(c.logsDir, logName))
+	if err != nil {
+		return err
+	}
+
+	volumePort := c.volumePort0
+	volumeGrpcPort := c.volumeGrpcPort0
+	volumePubPort := c.volumePubPort0
+	if index == 1 {
+		volumePort = c.volumePort1
+		volumeGrpcPort = c.volumeGrpcPort1
+		volumePubPort = c.volumePubPort1
+	}
+
+	args := []string{
+		"-config_dir=" + c.configDir,
+		"volume",
+		"-ip=127.0.0.1",
+		"-port=" + strconv.Itoa(volumePort),
+		"-port.grpc=" + strconv.Itoa(volumeGrpcPort),
+		"-port.public=" + strconv.Itoa(volumePubPort),
+		"-dir=" + dataDir,
+		"-max=16",
+		"-master=127.0.0.1:" + strconv.Itoa(c.masterPort),
+		"-readMode=" + c.profile.ReadMode,
+		"-concurrentUploadLimitMB=" + strconv.Itoa(c.profile.ConcurrentUploadLimitMB),
+		"-concurrentDownloadLimitMB=" + strconv.Itoa(c.profile.ConcurrentDownloadLimitMB),
+	}
+	if c.profile.InflightUploadTimeout > 0 {
+		args = append(args, "-inflightUploadDataTimeout="+c.profile.InflightUploadTimeout.String())
+	}
+	if c.profile.InflightDownloadTimeout > 0 {
+		args = append(args, "-inflightDownloadDataTimeout="+c.profile.InflightDownloadTimeout.String())
+	}
+
+	cmd := exec.Command(c.weedBinary, args...)
+	cmd.Dir = c.baseDir
+	cmd.Stdout = logFile
+	cmd.Stderr = logFile
+
+	if err = cmd.Start(); err != nil {
+		return err
+	}
+	if index == 1 {
+		c.volumeCmd1 = cmd
+	} else {
+		c.volumeCmd0 = cmd
+	}
+	return nil
+}
+
+func (c *DualVolumeCluster) waitForHTTP(url string) error {
+	return (&Cluster{}).waitForHTTP(url)
+}
+
+func (c *DualVolumeCluster) waitForTCP(addr string) error {
+	return (&Cluster{}).waitForTCP(addr)
+}
+
+func (c *DualVolumeCluster) tailLog(logName string) string {
+	return (&Cluster{logsDir: c.logsDir}).tailLog(logName)
+}
+
+func (c *DualVolumeCluster) MasterAddress() string {
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.masterPort))
+}
+
+func (c *DualVolumeCluster) MasterURL() string {
+	return "http://" + c.MasterAddress()
+}
+
+func (c *DualVolumeCluster) VolumeAdminAddress(index int) string {
+	if index == 1 {
+		return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.volumePort1))
+	}
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.volumePort0))
+}
+
+func (c *DualVolumeCluster) VolumePublicAddress(index int) string {
+	if index == 1 {
+		return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.volumePubPort1))
+	}
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.volumePubPort0))
+}
+
+func (c *DualVolumeCluster) VolumeGRPCAddress(index int) string {
+	if index == 1 {
+		return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.volumeGrpcPort1))
+	}
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.volumeGrpcPort0))
+}
+
+func (c *DualVolumeCluster) VolumeAdminURL(index int) string {
+	return "http://" + c.VolumeAdminAddress(index)
+}
+
+func (c *DualVolumeCluster) VolumePublicURL(index int) string {
+	return "http://" + c.VolumePublicAddress(index)
+}

test/volume_server/framework/cluster_with_filer.go

@@ -0,0 +1,91 @@
+package framework
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strconv"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+type ClusterWithFiler struct {
+	*Cluster
+
+	filerCmd      *exec.Cmd
+	filerPort     int
+	filerGrpcPort int
+}
+
+func StartSingleVolumeClusterWithFiler(t testing.TB, profile matrix.Profile) *ClusterWithFiler {
+	t.Helper()
+
+	baseCluster := StartSingleVolumeCluster(t, profile)
+
+	ports, err := allocatePorts(2)
+	if err != nil {
+		t.Fatalf("allocate filer ports: %v", err)
+	}
+
+	filerDataDir := filepath.Join(baseCluster.baseDir, "filer")
+	if mkErr := os.MkdirAll(filerDataDir, 0o755); mkErr != nil {
+		t.Fatalf("create filer data dir: %v", mkErr)
+	}
+
+	logFile, err := os.Create(filepath.Join(baseCluster.logsDir, "filer.log"))
+	if err != nil {
+		t.Fatalf("create filer log file: %v", err)
+	}
+
+	filerPort := ports[0]
+	filerGrpcPort := ports[1]
+	args := []string{
+		"-config_dir=" + baseCluster.configDir,
+		"filer",
+		"-master=127.0.0.1:" + strconv.Itoa(baseCluster.masterPort),
+		"-ip=127.0.0.1",
+		"-port=" + strconv.Itoa(filerPort),
+		"-port.grpc=" + strconv.Itoa(filerGrpcPort),
+		"-defaultStoreDir=" + filerDataDir,
+	}
+
+	filerCmd := exec.Command(baseCluster.weedBinary, args...)
+	filerCmd.Dir = baseCluster.baseDir
+	filerCmd.Stdout = logFile
+	filerCmd.Stderr = logFile
+	if err = filerCmd.Start(); err != nil {
+		t.Fatalf("start filer: %v", err)
+	}
+
+	if err = baseCluster.waitForTCP(net.JoinHostPort("127.0.0.1", strconv.Itoa(filerGrpcPort))); err != nil {
+		filerLogTail := baseCluster.tailLog("filer.log")
+		stopProcess(filerCmd)
+		t.Fatalf("wait for filer grpc readiness: %v\nfiler log tail:\n%s", err, filerLogTail)
+	}
+
+	t.Cleanup(func() {
+		stopProcess(filerCmd)
+	})
+
+	return &ClusterWithFiler{
+		Cluster:       baseCluster,
+		filerCmd:      filerCmd,
+		filerPort:     filerPort,
+		filerGrpcPort: filerGrpcPort,
+	}
+}
+
+func (c *ClusterWithFiler) FilerAddress() string {
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.filerPort))
+}
+
+func (c *ClusterWithFiler) FilerGRPCAddress() string {
+	return net.JoinHostPort("127.0.0.1", strconv.Itoa(c.filerGrpcPort))
+}
+
+func (c *ClusterWithFiler) FilerServerAddress() string {
+	return fmt.Sprintf("%s.%d", c.FilerAddress(), c.filerGrpcPort)
+}

test/volume_server/framework/fault_injection.go

@@ -0,0 +1,8 @@
+package framework
+
+// Phase 0 placeholder for future fault injection utilities.
+//
+// Planned extensions:
+// - restart/kill selected processes
+// - temporary network isolation hooks
+// - master or peer outage helpers for proxy/replication branch coverage

test/volume_server/framework/grpc_client.go

@@ -0,0 +1,28 @@
+package framework
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+func DialVolumeServer(t testing.TB, address string) (*grpc.ClientConn, volume_server_pb.VolumeServerClient) {
+	t.Helper()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	conn, err := grpc.DialContext(ctx, address,
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithBlock(),
+	)
+	if err != nil {
+		t.Fatalf("dial volume grpc %s: %v", address, err)
+	}
+
+	return conn, volume_server_pb.NewVolumeServerClient(conn)
+}

test/volume_server/framework/http_client.go

@@ -0,0 +1,34 @@
+package framework
+
+import (
+	"io"
+	"net/http"
+	"testing"
+	"time"
+)
+
+func NewHTTPClient() *http.Client {
+	return &http.Client{Timeout: 10 * time.Second}
+}
+
+func DoRequest(t testing.TB, client *http.Client, req *http.Request) *http.Response {
+	t.Helper()
+	resp, err := client.Do(req)
+	if err != nil {
+		t.Fatalf("http request %s %s: %v", req.Method, req.URL.String(), err)
+	}
+	return resp
+}
+
+func ReadAllAndClose(t testing.TB, resp *http.Response) []byte {
+	t.Helper()
+	if resp == nil {
+		return nil
+	}
+	defer resp.Body.Close()
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		t.Fatalf("read response body: %v", err)
+	}
+	return body
+}

test/volume_server/framework/volume_fixture.go

@@ -0,0 +1,56 @@
+package framework
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/seaweedfs/seaweedfs/weed/storage/needle"
+)
+
+func AllocateVolume(t testing.TB, client volume_server_pb.VolumeServerClient, volumeID uint32, collection string) {
+	t.Helper()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := client.AllocateVolume(ctx, &volume_server_pb.AllocateVolumeRequest{
+		VolumeId:    volumeID,
+		Collection:  collection,
+		Replication: "000",
+		Version:     uint32(needle.GetCurrentVersion()),
+	})
+	if err != nil {
+		t.Fatalf("allocate volume %d: %v", volumeID, err)
+	}
+}
+
+func NewFileID(volumeID uint32, key uint64, cookie uint32) string {
+	return needle.NewFileId(needle.VolumeId(volumeID), key, cookie).String()
+}
+
+func UploadBytes(t testing.TB, client *http.Client, volumeURL, fid string, data []byte) *http.Response {
+	t.Helper()
+
+	req, err := http.NewRequest(http.MethodPost, fmt.Sprintf("%s/%s", volumeURL, fid), bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("build upload request: %v", err)
+	}
+	req.Header.Set("Content-Type", "application/octet-stream")
+	req.Header.Set("Content-Length", fmt.Sprintf("%d", len(data)))
+	return DoRequest(t, client, req)
+}
+
+func ReadBytes(t testing.TB, client *http.Client, volumeURL, fid string) *http.Response {
+	t.Helper()
+
+	req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("%s/%s", volumeURL, fid), nil)
+	if err != nil {
+		t.Fatalf("build read request: %v", err)
+	}
+	return DoRequest(t, client, req)
+}

test/volume_server/grpc/admin_extra_test.go

@@ -0,0 +1,445 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/cluster"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestVolumeNeedleStatusForUploadedFile(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(21)
+	const needleID = uint64(778899)
+	const cookie = uint32(0xA1B2C3D4)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	client := framework.NewHTTPClient()
+	payload := []byte("needle-status-payload")
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload status: expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	statusResp, err := grpcClient.VolumeNeedleStatus(ctx, &volume_server_pb.VolumeNeedleStatusRequest{
+		VolumeId: volumeID,
+		NeedleId: needleID,
+	})
+	if err != nil {
+		t.Fatalf("VolumeNeedleStatus failed: %v", err)
+	}
+	if statusResp.GetNeedleId() != needleID {
+		t.Fatalf("needle id mismatch: got %d want %d", statusResp.GetNeedleId(), needleID)
+	}
+	if statusResp.GetCookie() != cookie {
+		t.Fatalf("cookie mismatch: got %d want %d", statusResp.GetCookie(), cookie)
+	}
+	if statusResp.GetSize() == 0 {
+		t.Fatalf("expected non-zero needle size")
+	}
+}
+
+func TestVolumeNeedleStatusViaEcShardsWhenNormalVolumeUnmounted(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(26)
+	const needleID = uint64(778900)
+	const cookie = uint32(0xA1B2C3D5)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	payload := []byte("needle-status-ec-path-payload")
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload status: expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsGenerate failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		ShardIds:   []uint32{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsMount data shards failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeUnmount(ctx, &volume_server_pb.VolumeUnmountRequest{
+		VolumeId: volumeID,
+	})
+	if err != nil {
+		t.Fatalf("VolumeUnmount failed: %v", err)
+	}
+
+	statusResp, err := grpcClient.VolumeNeedleStatus(ctx, &volume_server_pb.VolumeNeedleStatusRequest{
+		VolumeId: volumeID,
+		NeedleId: needleID,
+	})
+	if err != nil {
+		t.Fatalf("VolumeNeedleStatus via EC shards failed: %v", err)
+	}
+	if statusResp.GetNeedleId() != needleID {
+		t.Fatalf("needle id mismatch: got %d want %d", statusResp.GetNeedleId(), needleID)
+	}
+	if statusResp.GetCookie() != cookie {
+		t.Fatalf("cookie mismatch: got %d want %d", statusResp.GetCookie(), cookie)
+	}
+	if statusResp.GetSize() == 0 {
+		t.Fatalf("expected non-zero needle size from EC-backed needle status")
+	}
+
+	_, err = grpcClient.VolumeNeedleStatus(ctx, &volume_server_pb.VolumeNeedleStatusRequest{
+		VolumeId: volumeID,
+		NeedleId: needleID + 999999,
+	})
+	if err == nil || !strings.Contains(strings.ToLower(err.Error()), "not found") {
+		t.Fatalf("VolumeNeedleStatus via EC shards missing-needle error mismatch: %v", err)
+	}
+}
+
+func TestVolumeNeedleStatusMissingVolumeAndNeedle(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(25)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeNeedleStatus(ctx, &volume_server_pb.VolumeNeedleStatusRequest{
+		VolumeId: 99925,
+		NeedleId: 1,
+	})
+	if err == nil {
+		t.Fatalf("VolumeNeedleStatus should fail for missing volume")
+	}
+	if !strings.Contains(strings.ToLower(err.Error()), "volume not found") {
+		t.Fatalf("VolumeNeedleStatus missing-volume error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.VolumeNeedleStatus(ctx, &volume_server_pb.VolumeNeedleStatusRequest{
+		VolumeId: volumeID,
+		NeedleId: 123456789,
+	})
+	if err == nil {
+		t.Fatalf("VolumeNeedleStatus should fail for missing needle")
+	}
+	if !strings.Contains(strings.ToLower(err.Error()), "not found") {
+		t.Fatalf("VolumeNeedleStatus missing-needle error mismatch: %v", err)
+	}
+}
+
+func mustNewRequest(t testing.TB, method, url string) *http.Request {
+	t.Helper()
+	req, err := http.NewRequest(method, url, nil)
+	if err != nil {
+		t.Fatalf("create request %s %s: %v", method, url, err)
+	}
+	return req
+}
+
+func TestVolumeConfigureInvalidReplication(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(22)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := grpcClient.VolumeConfigure(ctx, &volume_server_pb.VolumeConfigureRequest{
+		VolumeId:    volumeID,
+		Replication: "bad-replication",
+	})
+	if err != nil {
+		t.Fatalf("VolumeConfigure returned grpc error: %v", err)
+	}
+	if resp.GetError() == "" {
+		t.Fatalf("VolumeConfigure expected response error for invalid replication")
+	}
+	if !strings.Contains(strings.ToLower(resp.GetError()), "replication") {
+		t.Fatalf("VolumeConfigure error should mention replication, got: %q", resp.GetError())
+	}
+}
+
+func TestVolumeConfigureSuccessAndMissingRollbackPath(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(24)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	successResp, err := grpcClient.VolumeConfigure(ctx, &volume_server_pb.VolumeConfigureRequest{
+		VolumeId:    volumeID,
+		Replication: "000",
+	})
+	if err != nil {
+		t.Fatalf("VolumeConfigure success path returned grpc error: %v", err)
+	}
+	if successResp.GetError() != "" {
+		t.Fatalf("VolumeConfigure success path expected empty response error, got: %q", successResp.GetError())
+	}
+
+	statusResp, err := grpcClient.VolumeStatus(ctx, &volume_server_pb.VolumeStatusRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("VolumeStatus after successful configure failed: %v", err)
+	}
+	if statusResp.GetIsReadOnly() {
+		t.Fatalf("VolumeStatus after configure expected writable volume")
+	}
+
+	missingResp, err := grpcClient.VolumeConfigure(ctx, &volume_server_pb.VolumeConfigureRequest{
+		VolumeId:    99024,
+		Replication: "000",
+	})
+	if err != nil {
+		t.Fatalf("VolumeConfigure missing-volume branch should return response error, got grpc error: %v", err)
+	}
+	if missingResp.GetError() == "" {
+		t.Fatalf("VolumeConfigure missing-volume expected non-empty response error")
+	}
+	lower := strings.ToLower(missingResp.GetError())
+	if !strings.Contains(lower, "not found on disk") {
+		t.Fatalf("VolumeConfigure missing-volume error should mention not found on disk, got: %q", missingResp.GetError())
+	}
+	if !strings.Contains(lower, "failed to restore mount") {
+		t.Fatalf("VolumeConfigure missing-volume error should include remount rollback failure, got: %q", missingResp.GetError())
+	}
+}
+
+func TestPingVolumeTargetAndLeaveAffectsHealthz(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	pingResp, err := grpcClient.Ping(ctx, &volume_server_pb.PingRequest{
+		TargetType: cluster.VolumeServerType,
+		Target:     clusterHarness.VolumeServerAddress(),
+	})
+	if err != nil {
+		t.Fatalf("Ping target volume server failed: %v", err)
+	}
+	if pingResp.GetRemoteTimeNs() == 0 {
+		t.Fatalf("expected remote timestamp from ping target volume server")
+	}
+
+	if _, err = grpcClient.VolumeServerLeave(ctx, &volume_server_pb.VolumeServerLeaveRequest{}); err != nil {
+		t.Fatalf("VolumeServerLeave failed: %v", err)
+	}
+
+	client := framework.NewHTTPClient()
+	healthURL := clusterHarness.VolumeAdminURL() + "/healthz"
+	deadline := time.Now().Add(5 * time.Second)
+	for {
+		resp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, healthURL))
+		_ = framework.ReadAllAndClose(t, resp)
+		if resp.StatusCode == http.StatusServiceUnavailable {
+			return
+		}
+		if time.Now().After(deadline) {
+			t.Fatalf("expected healthz to return 503 after leave, got %d", resp.StatusCode)
+		}
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+func TestVolumeServerLeaveIsIdempotent(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	if _, err := grpcClient.VolumeServerLeave(ctx, &volume_server_pb.VolumeServerLeaveRequest{}); err != nil {
+		t.Fatalf("first VolumeServerLeave failed: %v", err)
+	}
+	if _, err := grpcClient.VolumeServerLeave(ctx, &volume_server_pb.VolumeServerLeaveRequest{}); err != nil {
+		t.Fatalf("second VolumeServerLeave should be idempotent success, got: %v", err)
+	}
+
+	client := framework.NewHTTPClient()
+	healthURL := clusterHarness.VolumeAdminURL() + "/healthz"
+	deadline := time.Now().Add(5 * time.Second)
+	for {
+		resp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, healthURL))
+		_ = framework.ReadAllAndClose(t, resp)
+		if resp.StatusCode == http.StatusServiceUnavailable {
+			return
+		}
+		if time.Now().After(deadline) {
+			t.Fatalf("expected healthz to stay 503 after repeated leave, got %d", resp.StatusCode)
+		}
+		time.Sleep(100 * time.Millisecond)
+	}
+}
+
+func TestPingUnknownAndUnreachableTargetPaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	unknownResp, err := grpcClient.Ping(ctx, &volume_server_pb.PingRequest{
+		TargetType: "unknown-type",
+		Target:     "127.0.0.1:12345",
+	})
+	if err != nil {
+		t.Fatalf("Ping unknown target type should not return grpc error, got: %v", err)
+	}
+	if unknownResp.GetRemoteTimeNs() != 0 {
+		t.Fatalf("Ping unknown target type expected remote_time_ns=0, got %d", unknownResp.GetRemoteTimeNs())
+	}
+	if unknownResp.GetStopTimeNs() < unknownResp.GetStartTimeNs() {
+		t.Fatalf("Ping unknown target type expected stop_time_ns >= start_time_ns")
+	}
+
+	_, err = grpcClient.Ping(ctx, &volume_server_pb.PingRequest{
+		TargetType: cluster.MasterType,
+		Target:     "127.0.0.1:1",
+	})
+	if err == nil {
+		t.Fatalf("Ping master target should fail when target is unreachable")
+	}
+	if !strings.Contains(err.Error(), "ping master") {
+		t.Fatalf("Ping master unreachable error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.Ping(ctx, &volume_server_pb.PingRequest{
+		TargetType: cluster.FilerType,
+		Target:     "127.0.0.1:1",
+	})
+	if err == nil {
+		t.Fatalf("Ping filer target should fail when target is unreachable")
+	}
+	if !strings.Contains(err.Error(), "ping filer") {
+		t.Fatalf("Ping filer unreachable error mismatch: %v", err)
+	}
+}
+
+func TestPingMasterTargetSuccess(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := grpcClient.Ping(ctx, &volume_server_pb.PingRequest{
+		TargetType: cluster.MasterType,
+		Target:     clusterHarness.MasterAddress(),
+	})
+	if err != nil {
+		t.Fatalf("Ping master target success path failed: %v", err)
+	}
+	if resp.GetRemoteTimeNs() == 0 {
+		t.Fatalf("Ping master target expected non-zero remote time")
+	}
+	if resp.GetStopTimeNs() < resp.GetStartTimeNs() {
+		t.Fatalf("Ping master target expected stop >= start, got start=%d stop=%d", resp.GetStartTimeNs(), resp.GetStopTimeNs())
+	}
+}
+
+func TestPingFilerTargetSuccess(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeClusterWithFiler(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := grpcClient.Ping(ctx, &volume_server_pb.PingRequest{
+		TargetType: cluster.FilerType,
+		Target:     clusterHarness.FilerServerAddress(),
+	})
+	if err != nil {
+		t.Fatalf("Ping filer target success path failed: %v", err)
+	}
+	if resp.GetRemoteTimeNs() == 0 {
+		t.Fatalf("Ping filer target expected non-zero remote time")
+	}
+	if resp.GetStopTimeNs() < resp.GetStartTimeNs() {
+		t.Fatalf("Ping filer target expected stop >= start, got start=%d stop=%d", resp.GetStartTimeNs(), resp.GetStopTimeNs())
+	}
+}

test/volume_server/grpc/admin_lifecycle_test.go

@@ -0,0 +1,215 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func TestVolumeAdminLifecycleRPCs(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	const volumeID = uint32(11)
+	framework.AllocateVolume(t, client, volumeID, "")
+
+	statusResp, err := client.VolumeStatus(ctx, &volume_server_pb.VolumeStatusRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("VolumeStatus failed: %v", err)
+	}
+	if statusResp.GetFileCount() != 0 {
+		t.Fatalf("new volume should be empty, got file_count=%d", statusResp.GetFileCount())
+	}
+
+	if _, err = client.VolumeUnmount(ctx, &volume_server_pb.VolumeUnmountRequest{VolumeId: volumeID}); err != nil {
+		t.Fatalf("VolumeUnmount failed: %v", err)
+	}
+	if _, err = client.VolumeMount(ctx, &volume_server_pb.VolumeMountRequest{VolumeId: volumeID}); err != nil {
+		t.Fatalf("VolumeMount failed: %v", err)
+	}
+
+	if _, err = client.VolumeDelete(ctx, &volume_server_pb.VolumeDeleteRequest{VolumeId: volumeID, OnlyEmpty: true}); err != nil {
+		t.Fatalf("VolumeDelete failed: %v", err)
+	}
+
+	_, err = client.VolumeStatus(ctx, &volume_server_pb.VolumeStatusRequest{VolumeId: volumeID})
+	if err == nil {
+		t.Fatalf("VolumeStatus should fail after delete")
+	}
+	if st, ok := status.FromError(err); !ok || st.Code() == codes.OK {
+		t.Fatalf("VolumeStatus error should be a non-OK grpc status, got: %v", err)
+	}
+}
+
+func TestVolumeDeleteOnlyEmptyVariants(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(13)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 66001, 0x11223344)
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, []byte("volume-delete-only-empty"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeDelete(ctx, &volume_server_pb.VolumeDeleteRequest{VolumeId: volumeID, OnlyEmpty: true})
+	if err == nil || !strings.Contains(err.Error(), "volume not empty") {
+		t.Fatalf("VolumeDelete only_empty=true expected volume-not-empty error, got: %v", err)
+	}
+
+	_, err = grpcClient.VolumeDelete(ctx, &volume_server_pb.VolumeDeleteRequest{VolumeId: volumeID, OnlyEmpty: false})
+	if err != nil {
+		t.Fatalf("VolumeDelete only_empty=false failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeStatus(ctx, &volume_server_pb.VolumeStatusRequest{VolumeId: volumeID})
+	if err == nil {
+		t.Fatalf("VolumeStatus should fail after non-empty delete with only_empty=false")
+	}
+}
+
+func TestMaintenanceModeRejectsAllocateVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stateResp, err := client.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = client.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{Maintenance: true, Version: stateResp.GetState().GetVersion()},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	_, err = client.AllocateVolume(ctx, &volume_server_pb.AllocateVolumeRequest{VolumeId: 12, Replication: "000"})
+	if err == nil {
+		t.Fatalf("AllocateVolume should fail when maintenance mode is enabled")
+	}
+	if !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("expected maintenance mode error, got: %v", err)
+	}
+}
+
+func TestAllocateDuplicateAndMountUnmountMissingVariants(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	const missingVolumeID = uint32(99331)
+	const volumeID = uint32(14)
+
+	if _, err := client.VolumeUnmount(ctx, &volume_server_pb.VolumeUnmountRequest{VolumeId: missingVolumeID}); err != nil {
+		t.Fatalf("VolumeUnmount missing volume should be idempotent success, got: %v", err)
+	}
+
+	_, err := client.VolumeMount(ctx, &volume_server_pb.VolumeMountRequest{VolumeId: missingVolumeID})
+	if err == nil {
+		t.Fatalf("VolumeMount missing volume should fail")
+	}
+	if !strings.Contains(err.Error(), "not found on disk") {
+		t.Fatalf("VolumeMount missing volume error mismatch: %v", err)
+	}
+
+	framework.AllocateVolume(t, client, volumeID, "")
+
+	_, err = client.AllocateVolume(ctx, &volume_server_pb.AllocateVolumeRequest{
+		VolumeId:    volumeID,
+		Replication: "000",
+	})
+	if err == nil {
+		t.Fatalf("AllocateVolume duplicate should fail")
+	}
+	if !strings.Contains(strings.ToLower(err.Error()), "already exists") {
+		t.Fatalf("AllocateVolume duplicate error mismatch: %v", err)
+	}
+
+	if _, err = client.VolumeUnmount(ctx, &volume_server_pb.VolumeUnmountRequest{VolumeId: volumeID}); err != nil {
+		t.Fatalf("VolumeUnmount existing volume failed: %v", err)
+	}
+	if _, err = client.VolumeUnmount(ctx, &volume_server_pb.VolumeUnmountRequest{VolumeId: volumeID}); err != nil {
+		t.Fatalf("VolumeUnmount already-unmounted volume should be idempotent success, got: %v", err)
+	}
+	if _, err = client.VolumeMount(ctx, &volume_server_pb.VolumeMountRequest{VolumeId: volumeID}); err != nil {
+		t.Fatalf("VolumeMount remount failed: %v", err)
+	}
+}
+
+func TestMaintenanceModeRejectsVolumeDelete(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(15)
+	framework.AllocateVolume(t, client, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stateResp, err := client.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = client.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{Maintenance: true, Version: stateResp.GetState().GetVersion()},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	_, err = client.VolumeDelete(ctx, &volume_server_pb.VolumeDeleteRequest{VolumeId: volumeID, OnlyEmpty: true})
+	if err == nil {
+		t.Fatalf("VolumeDelete should fail when maintenance mode is enabled")
+	}
+	if !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("expected maintenance mode error, got: %v", err)
+	}
+}

test/volume_server/grpc/admin_readonly_collection_test.go

@@ -0,0 +1,177 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestVolumeMarkReadonlyAndWritableLifecycle(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(72)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeMarkReadonly(ctx, &volume_server_pb.VolumeMarkReadonlyRequest{
+		VolumeId: volumeID,
+		Persist:  false,
+	})
+	if err != nil {
+		t.Fatalf("VolumeMarkReadonly failed: %v", err)
+	}
+
+	readOnlyStatus, err := grpcClient.VolumeStatus(ctx, &volume_server_pb.VolumeStatusRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("VolumeStatus after readonly failed: %v", err)
+	}
+	if !readOnlyStatus.GetIsReadOnly() {
+		t.Fatalf("VolumeStatus expected readonly=true after VolumeMarkReadonly")
+	}
+
+	_, err = grpcClient.VolumeMarkWritable(ctx, &volume_server_pb.VolumeMarkWritableRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("VolumeMarkWritable failed: %v", err)
+	}
+
+	writableStatus, err := grpcClient.VolumeStatus(ctx, &volume_server_pb.VolumeStatusRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("VolumeStatus after writable failed: %v", err)
+	}
+	if writableStatus.GetIsReadOnly() {
+		t.Fatalf("VolumeStatus expected readonly=false after VolumeMarkWritable")
+	}
+}
+
+func TestVolumeMarkReadonlyPersistTrue(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(74)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeMarkReadonly(ctx, &volume_server_pb.VolumeMarkReadonlyRequest{
+		VolumeId: volumeID,
+		Persist:  true,
+	})
+	if err != nil {
+		t.Fatalf("VolumeMarkReadonly persist=true failed: %v", err)
+	}
+
+	statusResp, err := grpcClient.VolumeStatus(ctx, &volume_server_pb.VolumeStatusRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("VolumeStatus after persist readonly failed: %v", err)
+	}
+	if !statusResp.GetIsReadOnly() {
+		t.Fatalf("VolumeStatus expected readonly=true after persist readonly")
+	}
+}
+
+func TestVolumeMarkReadonlyWritableErrorPaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeMarkReadonly(ctx, &volume_server_pb.VolumeMarkReadonlyRequest{VolumeId: 98771, Persist: true})
+	if err == nil || !strings.Contains(err.Error(), "not found") {
+		t.Fatalf("VolumeMarkReadonly missing-volume error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.VolumeMarkWritable(ctx, &volume_server_pb.VolumeMarkWritableRequest{VolumeId: 98772})
+	if err == nil || !strings.Contains(err.Error(), "not found") {
+		t.Fatalf("VolumeMarkWritable missing-volume error mismatch: %v", err)
+	}
+
+	stateResp, err := grpcClient.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = grpcClient.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{
+			Maintenance: true,
+			Version:     stateResp.GetState().GetVersion(),
+		},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeMarkReadonly(ctx, &volume_server_pb.VolumeMarkReadonlyRequest{VolumeId: 1, Persist: true})
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("VolumeMarkReadonly maintenance error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.VolumeMarkWritable(ctx, &volume_server_pb.VolumeMarkWritableRequest{VolumeId: 1})
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("VolumeMarkWritable maintenance error mismatch: %v", err)
+	}
+}
+
+func TestDeleteCollectionRemovesVolumeAndIsIdempotent(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(73)
+	const collection = "it-delete-collection"
+
+	framework.AllocateVolume(t, grpcClient, volumeID, collection)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeStatus(ctx, &volume_server_pb.VolumeStatusRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("VolumeStatus before DeleteCollection failed: %v", err)
+	}
+
+	_, err = grpcClient.DeleteCollection(ctx, &volume_server_pb.DeleteCollectionRequest{Collection: collection})
+	if err != nil {
+		t.Fatalf("DeleteCollection existing collection failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeStatus(ctx, &volume_server_pb.VolumeStatusRequest{VolumeId: volumeID})
+	if err == nil {
+		t.Fatalf("VolumeStatus should fail after collection delete")
+	}
+	if !strings.Contains(err.Error(), "not found volume") {
+		t.Fatalf("VolumeStatus after DeleteCollection error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.DeleteCollection(ctx, &volume_server_pb.DeleteCollectionRequest{Collection: collection})
+	if err != nil {
+		t.Fatalf("DeleteCollection idempotent retry failed: %v", err)
+	}
+}

test/volume_server/grpc/batch_delete_test.go

@@ -0,0 +1,264 @@
+package volume_server_grpc_test
+
+import (
+	"bytes"
+	"context"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestBatchDeleteInvalidFidAndMaintenanceMode(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := client.BatchDelete(ctx, &volume_server_pb.BatchDeleteRequest{FileIds: []string{"bad-fid"}})
+	if err != nil {
+		t.Fatalf("BatchDelete invalid fid should return response, got error: %v", err)
+	}
+	if len(resp.GetResults()) != 1 {
+		t.Fatalf("expected one batch delete result, got %d", len(resp.GetResults()))
+	}
+	if got := resp.GetResults()[0].GetStatus(); got != 400 {
+		t.Fatalf("invalid fid expected status 400, got %d", got)
+	}
+
+	stateResp, err := client.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = client.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{Maintenance: true, Version: stateResp.GetState().GetVersion()},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	_, err = client.BatchDelete(ctx, &volume_server_pb.BatchDeleteRequest{FileIds: []string{"1,1234567890ab"}})
+	if err == nil {
+		t.Fatalf("BatchDelete should fail when maintenance mode is enabled")
+	}
+	if !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("expected maintenance mode error, got: %v", err)
+	}
+}
+
+func TestBatchDeleteCookieMismatchAndSkipCheck(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(31)
+	const needleID = uint64(900001)
+	const correctCookie = uint32(0x1122AABB)
+	const wrongCookie = uint32(0x1122AABC)
+	framework.AllocateVolume(t, client, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, needleID, correctCookie)
+	uploadResp := framework.UploadBytes(t, httpClient, cluster.VolumeAdminURL(), fid, []byte("batch-delete-cookie-check"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	wrongCookieFid := framework.NewFileID(volumeID, needleID, wrongCookie)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	mismatchResp, err := client.BatchDelete(ctx, &volume_server_pb.BatchDeleteRequest{
+		FileIds:         []string{wrongCookieFid},
+		SkipCookieCheck: false,
+	})
+	if err != nil {
+		t.Fatalf("BatchDelete with cookie check failed: %v", err)
+	}
+	if len(mismatchResp.GetResults()) != 1 {
+		t.Fatalf("BatchDelete cookie mismatch expected 1 result, got %d", len(mismatchResp.GetResults()))
+	}
+	if mismatchResp.GetResults()[0].GetStatus() != http.StatusBadRequest {
+		t.Fatalf("BatchDelete cookie mismatch expected status 400, got %d", mismatchResp.GetResults()[0].GetStatus())
+	}
+
+	skipCheckResp, err := client.BatchDelete(ctx, &volume_server_pb.BatchDeleteRequest{
+		FileIds:         []string{wrongCookieFid},
+		SkipCookieCheck: true,
+	})
+	if err != nil {
+		t.Fatalf("BatchDelete skip cookie check failed: %v", err)
+	}
+	if len(skipCheckResp.GetResults()) != 1 {
+		t.Fatalf("BatchDelete skip check expected 1 result, got %d", len(skipCheckResp.GetResults()))
+	}
+	if skipCheckResp.GetResults()[0].GetStatus() != http.StatusAccepted {
+		t.Fatalf("BatchDelete skip check expected status 202, got %d", skipCheckResp.GetResults()[0].GetStatus())
+	}
+
+	readAfterDelete := framework.ReadBytes(t, httpClient, cluster.VolumeAdminURL(), fid)
+	_ = framework.ReadAllAndClose(t, readAfterDelete)
+	if readAfterDelete.StatusCode != http.StatusNotFound {
+		t.Fatalf("read after skip-check batch delete expected 404, got %d", readAfterDelete.StatusCode)
+	}
+}
+
+func TestBatchDeleteMixedStatusesAndMismatchStopsProcessing(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(32)
+	framework.AllocateVolume(t, client, volumeID, "")
+
+	const needleA = uint64(910001)
+	const needleB = uint64(910002)
+	const needleC = uint64(910003)
+	const cookieA = uint32(0x11111111)
+	const cookieB = uint32(0x22222222)
+	const cookieC = uint32(0x33333333)
+
+	httpClient := framework.NewHTTPClient()
+	fidA := framework.NewFileID(volumeID, needleA, cookieA)
+	fidB := framework.NewFileID(volumeID, needleB, cookieB)
+	fidC := framework.NewFileID(volumeID, needleC, cookieC)
+
+	for _, tc := range []struct {
+		fid  string
+		body string
+	}{
+		{fid: fidA, body: "batch-delete-mixed-a"},
+		{fid: fidB, body: "batch-delete-mixed-b"},
+		{fid: fidC, body: "batch-delete-mixed-c"},
+	} {
+		uploadResp := framework.UploadBytes(t, httpClient, cluster.VolumeAdminURL(), tc.fid, []byte(tc.body))
+		_ = framework.ReadAllAndClose(t, uploadResp)
+		if uploadResp.StatusCode != http.StatusCreated {
+			t.Fatalf("upload %s expected 201, got %d", tc.fid, uploadResp.StatusCode)
+		}
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	missingFid := framework.NewFileID(volumeID, 919999, 0x44444444)
+	mixedResp, err := client.BatchDelete(ctx, &volume_server_pb.BatchDeleteRequest{
+		FileIds: []string{"bad-fid", fidA, missingFid},
+	})
+	if err != nil {
+		t.Fatalf("BatchDelete mixed status request failed: %v", err)
+	}
+	if len(mixedResp.GetResults()) != 3 {
+		t.Fatalf("BatchDelete mixed status expected 3 results, got %d", len(mixedResp.GetResults()))
+	}
+	if mixedResp.GetResults()[0].GetStatus() != http.StatusBadRequest {
+		t.Fatalf("BatchDelete mixed result[0] expected 400, got %d", mixedResp.GetResults()[0].GetStatus())
+	}
+	if mixedResp.GetResults()[1].GetStatus() != http.StatusAccepted {
+		t.Fatalf("BatchDelete mixed result[1] expected 202, got %d", mixedResp.GetResults()[1].GetStatus())
+	}
+	if mixedResp.GetResults()[2].GetStatus() != http.StatusNotFound {
+		t.Fatalf("BatchDelete mixed result[2] expected 404, got %d", mixedResp.GetResults()[2].GetStatus())
+	}
+
+	readDeletedA := framework.ReadBytes(t, httpClient, cluster.VolumeAdminURL(), fidA)
+	_ = framework.ReadAllAndClose(t, readDeletedA)
+	if readDeletedA.StatusCode != http.StatusNotFound {
+		t.Fatalf("fidA should be deleted after batch delete, got status %d", readDeletedA.StatusCode)
+	}
+
+	wrongCookieB := framework.NewFileID(volumeID, needleB, cookieB+1)
+	stopResp, err := client.BatchDelete(ctx, &volume_server_pb.BatchDeleteRequest{
+		FileIds: []string{wrongCookieB, fidC},
+	})
+	if err != nil {
+		t.Fatalf("BatchDelete mismatch-stop request failed: %v", err)
+	}
+	if len(stopResp.GetResults()) != 1 {
+		t.Fatalf("BatchDelete mismatch-stop expected 1 result due early break, got %d", len(stopResp.GetResults()))
+	}
+	if stopResp.GetResults()[0].GetStatus() != http.StatusBadRequest {
+		t.Fatalf("BatchDelete mismatch-stop expected 400, got %d", stopResp.GetResults()[0].GetStatus())
+	}
+
+	readB := framework.ReadBytes(t, httpClient, cluster.VolumeAdminURL(), fidB)
+	_ = framework.ReadAllAndClose(t, readB)
+	if readB.StatusCode != http.StatusOK {
+		t.Fatalf("fidB should remain after cookie mismatch path, got %d", readB.StatusCode)
+	}
+
+	readC := framework.ReadBytes(t, httpClient, cluster.VolumeAdminURL(), fidC)
+	_ = framework.ReadAllAndClose(t, readC)
+	if readC.StatusCode != http.StatusOK {
+		t.Fatalf("fidC should remain when batch processing stops on mismatch, got %d", readC.StatusCode)
+	}
+}
+
+func TestBatchDeleteRejectsChunkManifestNeedles(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(33)
+	framework.AllocateVolume(t, client, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 920001, 0x5555AAAA)
+	req, err := http.NewRequest(http.MethodPost, cluster.VolumeAdminURL()+"/"+fid+"?cm=true", bytes.NewReader([]byte("manifest-placeholder-payload")))
+	if err != nil {
+		t.Fatalf("create chunk manifest upload request: %v", err)
+	}
+	req.Header.Set("Content-Type", "application/octet-stream")
+	uploadResp := framework.DoRequest(t, httpClient, req)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("chunk manifest upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := client.BatchDelete(ctx, &volume_server_pb.BatchDeleteRequest{FileIds: []string{fid}})
+	if err != nil {
+		t.Fatalf("BatchDelete chunk manifest should return response, got grpc error: %v", err)
+	}
+	if len(resp.GetResults()) != 1 {
+		t.Fatalf("BatchDelete chunk manifest expected one result, got %d", len(resp.GetResults()))
+	}
+	if resp.GetResults()[0].GetStatus() != http.StatusNotAcceptable {
+		t.Fatalf("BatchDelete chunk manifest expected status 406, got %d", resp.GetResults()[0].GetStatus())
+	}
+	if !strings.Contains(resp.GetResults()[0].GetError(), "ChunkManifest") {
+		t.Fatalf("BatchDelete chunk manifest expected error mentioning ChunkManifest, got %q", resp.GetResults()[0].GetError())
+	}
+
+	readResp := framework.ReadBytes(t, httpClient, cluster.VolumeAdminURL(), fid)
+	_ = framework.ReadAllAndClose(t, readResp)
+	if readResp.StatusCode != http.StatusOK {
+		t.Fatalf("chunk manifest should not be deleted by BatchDelete reject path, got %d", readResp.StatusCode)
+	}
+}

test/volume_server/grpc/copy_receive_variants_test.go

@@ -0,0 +1,431 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"io"
+	"math"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestVolumeIncrementalCopyDataAndNoDataPaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(91)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 770001, 0x1122AABB)
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, []byte("incremental-copy-content"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != 201 {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	dataStream, err := grpcClient.VolumeIncrementalCopy(ctx, &volume_server_pb.VolumeIncrementalCopyRequest{
+		VolumeId: volumeID,
+		SinceNs:  0,
+	})
+	if err != nil {
+		t.Fatalf("VolumeIncrementalCopy start failed: %v", err)
+	}
+
+	totalBytes := 0
+	for {
+		msg, recvErr := dataStream.Recv()
+		if recvErr == io.EOF {
+			break
+		}
+		if recvErr != nil {
+			t.Fatalf("VolumeIncrementalCopy recv failed: %v", recvErr)
+		}
+		totalBytes += len(msg.GetFileContent())
+	}
+	if totalBytes == 0 {
+		t.Fatalf("VolumeIncrementalCopy expected streamed bytes for since_ns=0")
+	}
+
+	noDataStream, err := grpcClient.VolumeIncrementalCopy(ctx, &volume_server_pb.VolumeIncrementalCopyRequest{
+		VolumeId: volumeID,
+		SinceNs:  math.MaxUint64,
+	})
+	if err != nil {
+		t.Fatalf("VolumeIncrementalCopy no-data start failed: %v", err)
+	}
+	_, err = noDataStream.Recv()
+	if err != io.EOF {
+		t.Fatalf("VolumeIncrementalCopy no-data expected EOF, got: %v", err)
+	}
+}
+
+func TestCopyFileIgnoreNotFoundAndStopOffsetZeroPaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(92)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	missingNoIgnore, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:                 volumeID,
+		Ext:                      ".definitely-missing",
+		CompactionRevision:       math.MaxUint32,
+		StopOffset:               1,
+		IgnoreSourceFileNotFound: false,
+	})
+	if err == nil {
+		_, err = missingNoIgnore.Recv()
+	}
+	if err == nil {
+		t.Fatalf("CopyFile should fail for missing source file when ignore_source_file_not_found=false")
+	}
+
+	missingIgnored, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:                 volumeID,
+		Ext:                      ".definitely-missing",
+		CompactionRevision:       math.MaxUint32,
+		StopOffset:               1,
+		IgnoreSourceFileNotFound: true,
+	})
+	if err != nil {
+		t.Fatalf("CopyFile ignore-not-found start failed: %v", err)
+	}
+	_, err = missingIgnored.Recv()
+	if err != io.EOF {
+		t.Fatalf("CopyFile ignore-not-found expected EOF, got: %v", err)
+	}
+
+	stopZeroStream, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:                 volumeID,
+		Ext:                      ".definitely-missing",
+		CompactionRevision:       math.MaxUint32,
+		StopOffset:               0,
+		IgnoreSourceFileNotFound: false,
+	})
+	if err != nil {
+		t.Fatalf("CopyFile stop_offset=0 start failed: %v", err)
+	}
+	_, err = stopZeroStream.Recv()
+	if err != io.EOF {
+		t.Fatalf("CopyFile stop_offset=0 expected EOF, got: %v", err)
+	}
+}
+
+func TestCopyFileCompactionRevisionMismatch(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(94)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stream, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:           volumeID,
+		Ext:                ".idx",
+		CompactionRevision: 1, // fresh volume starts at revision 0
+		StopOffset:         1,
+	})
+	if err == nil {
+		_, err = stream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "is compacted") {
+		t.Fatalf("CopyFile compaction mismatch error mismatch: %v", err)
+	}
+}
+
+func TestReceiveFileProtocolViolationResponses(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	contentFirstStream, err := grpcClient.ReceiveFile(ctx)
+	if err != nil {
+		t.Fatalf("ReceiveFile stream create failed: %v", err)
+	}
+	if err = contentFirstStream.Send(&volume_server_pb.ReceiveFileRequest{
+		Data: &volume_server_pb.ReceiveFileRequest_FileContent{
+			FileContent: []byte("content-before-info"),
+		},
+	}); err != nil {
+		t.Fatalf("ReceiveFile send content-first failed: %v", err)
+	}
+	contentFirstResp, err := contentFirstStream.CloseAndRecv()
+	if err != nil {
+		t.Fatalf("ReceiveFile content-first close failed: %v", err)
+	}
+	if !strings.Contains(contentFirstResp.GetError(), "file info must be sent first") {
+		t.Fatalf("ReceiveFile content-first response mismatch: %+v", contentFirstResp)
+	}
+
+	unknownTypeStream, err := grpcClient.ReceiveFile(ctx)
+	if err != nil {
+		t.Fatalf("ReceiveFile stream create for unknown-type failed: %v", err)
+	}
+	if err = unknownTypeStream.Send(&volume_server_pb.ReceiveFileRequest{}); err != nil {
+		t.Fatalf("ReceiveFile send unknown-type request failed: %v", err)
+	}
+	unknownTypeResp, err := unknownTypeStream.CloseAndRecv()
+	if err != nil {
+		t.Fatalf("ReceiveFile unknown-type close failed: %v", err)
+	}
+	if !strings.Contains(unknownTypeResp.GetError(), "unknown message type") {
+		t.Fatalf("ReceiveFile unknown-type response mismatch: %+v", unknownTypeResp)
+	}
+}
+
+func TestReceiveFileSuccessForRegularVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(95)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	payloadA := []byte("receive-file-chunk-a:")
+	payloadB := []byte("receive-file-chunk-b")
+	expected := append(append([]byte{}, payloadA...), payloadB...)
+
+	receiveStream, err := grpcClient.ReceiveFile(ctx)
+	if err != nil {
+		t.Fatalf("ReceiveFile stream create failed: %v", err)
+	}
+
+	if err = receiveStream.Send(&volume_server_pb.ReceiveFileRequest{
+		Data: &volume_server_pb.ReceiveFileRequest_Info{
+			Info: &volume_server_pb.ReceiveFileInfo{
+				VolumeId:   volumeID,
+				Ext:        ".tmprecv",
+				Collection: "",
+				IsEcVolume: false,
+				FileSize:   uint64(len(expected)),
+			},
+		},
+	}); err != nil {
+		t.Fatalf("ReceiveFile send info failed: %v", err)
+	}
+	if err = receiveStream.Send(&volume_server_pb.ReceiveFileRequest{
+		Data: &volume_server_pb.ReceiveFileRequest_FileContent{FileContent: payloadA},
+	}); err != nil {
+		t.Fatalf("ReceiveFile send payloadA failed: %v", err)
+	}
+	if err = receiveStream.Send(&volume_server_pb.ReceiveFileRequest{
+		Data: &volume_server_pb.ReceiveFileRequest_FileContent{FileContent: payloadB},
+	}); err != nil {
+		t.Fatalf("ReceiveFile send payloadB failed: %v", err)
+	}
+
+	resp, err := receiveStream.CloseAndRecv()
+	if err != nil {
+		t.Fatalf("ReceiveFile close failed: %v", err)
+	}
+	if resp.GetError() != "" {
+		t.Fatalf("ReceiveFile unexpected error response: %+v", resp)
+	}
+	if resp.GetBytesWritten() != uint64(len(expected)) {
+		t.Fatalf("ReceiveFile bytes_written mismatch: got %d want %d", resp.GetBytesWritten(), len(expected))
+	}
+
+	copyStream, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:           volumeID,
+		Ext:                ".tmprecv",
+		CompactionRevision: math.MaxUint32,
+		StopOffset:         uint64(len(expected)),
+	})
+	if err != nil {
+		t.Fatalf("CopyFile for received data start failed: %v", err)
+	}
+
+	var copied []byte
+	for {
+		msg, recvErr := copyStream.Recv()
+		if recvErr == io.EOF {
+			break
+		}
+		if recvErr != nil {
+			t.Fatalf("CopyFile for received data recv failed: %v", recvErr)
+		}
+		copied = append(copied, msg.GetFileContent()...)
+	}
+
+	if string(copied) != string(expected) {
+		t.Fatalf("received file data mismatch: got %q want %q", string(copied), string(expected))
+	}
+}
+
+func TestReceiveFileSuccessForEcVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	const volumeID = uint32(96)
+	const collection = "ec-receive-success"
+	const ext = ".ec00"
+
+	payloadA := []byte("receive-ec-file-chunk-a:")
+	payloadB := []byte("receive-ec-file-chunk-b")
+	expected := append(append([]byte{}, payloadA...), payloadB...)
+
+	receiveStream, err := grpcClient.ReceiveFile(ctx)
+	if err != nil {
+		t.Fatalf("ReceiveFile stream create failed: %v", err)
+	}
+
+	if err = receiveStream.Send(&volume_server_pb.ReceiveFileRequest{
+		Data: &volume_server_pb.ReceiveFileRequest_Info{
+			Info: &volume_server_pb.ReceiveFileInfo{
+				VolumeId:   volumeID,
+				Ext:        ext,
+				Collection: collection,
+				IsEcVolume: true,
+				ShardId:    0,
+				FileSize:   uint64(len(expected)),
+			},
+		},
+	}); err != nil {
+		t.Fatalf("ReceiveFile send EC info failed: %v", err)
+	}
+	if err = receiveStream.Send(&volume_server_pb.ReceiveFileRequest{
+		Data: &volume_server_pb.ReceiveFileRequest_FileContent{FileContent: payloadA},
+	}); err != nil {
+		t.Fatalf("ReceiveFile send EC payloadA failed: %v", err)
+	}
+	if err = receiveStream.Send(&volume_server_pb.ReceiveFileRequest{
+		Data: &volume_server_pb.ReceiveFileRequest_FileContent{FileContent: payloadB},
+	}); err != nil {
+		t.Fatalf("ReceiveFile send EC payloadB failed: %v", err)
+	}
+
+	resp, err := receiveStream.CloseAndRecv()
+	if err != nil {
+		t.Fatalf("ReceiveFile EC close failed: %v", err)
+	}
+	if resp.GetError() != "" {
+		t.Fatalf("ReceiveFile EC unexpected error response: %+v", resp)
+	}
+	if resp.GetBytesWritten() != uint64(len(expected)) {
+		t.Fatalf("ReceiveFile EC bytes_written mismatch: got %d want %d", resp.GetBytesWritten(), len(expected))
+	}
+
+	copyStream, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:           volumeID,
+		Collection:         collection,
+		IsEcVolume:         true,
+		Ext:                ext,
+		CompactionRevision: math.MaxUint32,
+		StopOffset:         uint64(len(expected)),
+	})
+	if err != nil {
+		t.Fatalf("CopyFile for received EC data start failed: %v", err)
+	}
+
+	var copied []byte
+	for {
+		msg, recvErr := copyStream.Recv()
+		if recvErr == io.EOF {
+			break
+		}
+		if recvErr != nil {
+			t.Fatalf("CopyFile for received EC data recv failed: %v", recvErr)
+		}
+		copied = append(copied, msg.GetFileContent()...)
+	}
+
+	if string(copied) != string(expected) {
+		t.Fatalf("received EC file data mismatch: got %q want %q", string(copied), string(expected))
+	}
+}
+
+func TestCopyFileEcVolumeIgnoreMissingSourcePaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	streamNoIgnore, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:                 99601,
+		Collection:               "ec-copy-missing",
+		IsEcVolume:               true,
+		Ext:                      ".ec00",
+		CompactionRevision:       math.MaxUint32,
+		StopOffset:               1,
+		IgnoreSourceFileNotFound: false,
+	})
+	if err == nil {
+		_, err = streamNoIgnore.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "not found ec volume id") {
+		t.Fatalf("CopyFile EC missing source error mismatch: %v", err)
+	}
+
+	streamIgnore, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:                 99602,
+		Collection:               "ec-copy-missing",
+		IsEcVolume:               true,
+		Ext:                      ".ec00",
+		CompactionRevision:       math.MaxUint32,
+		StopOffset:               1,
+		IgnoreSourceFileNotFound: true,
+	})
+	if err != nil {
+		t.Fatalf("CopyFile EC ignore-missing start failed: %v", err)
+	}
+	_, err = streamIgnore.Recv()
+	if err != io.EOF {
+		t.Fatalf("CopyFile EC ignore-missing expected EOF, got: %v", err)
+	}
+}

test/volume_server/grpc/copy_sync_test.go

@@ -0,0 +1,284 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestVolumeSyncStatusAndReadVolumeFileStatus(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(41)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	syncResp, err := grpcClient.VolumeSyncStatus(ctx, &volume_server_pb.VolumeSyncStatusRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("VolumeSyncStatus failed: %v", err)
+	}
+	if syncResp.GetVolumeId() != volumeID {
+		t.Fatalf("VolumeSyncStatus volume id mismatch: got %d want %d", syncResp.GetVolumeId(), volumeID)
+	}
+
+	statusResp, err := grpcClient.ReadVolumeFileStatus(ctx, &volume_server_pb.ReadVolumeFileStatusRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("ReadVolumeFileStatus failed: %v", err)
+	}
+	if statusResp.GetVolumeId() != volumeID {
+		t.Fatalf("ReadVolumeFileStatus volume id mismatch: got %d want %d", statusResp.GetVolumeId(), volumeID)
+	}
+	if statusResp.GetVersion() == 0 {
+		t.Fatalf("ReadVolumeFileStatus expected non-zero version")
+	}
+}
+
+func TestCopyAndStreamMethodsMissingVolumePaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeSyncStatus(ctx, &volume_server_pb.VolumeSyncStatusRequest{VolumeId: 98761})
+	if err == nil {
+		t.Fatalf("VolumeSyncStatus should fail for missing volume")
+	}
+
+	incrementalStream, err := grpcClient.VolumeIncrementalCopy(ctx, &volume_server_pb.VolumeIncrementalCopyRequest{VolumeId: 98762, SinceNs: 0})
+	if err == nil {
+		_, err = incrementalStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "not found volume") {
+		t.Fatalf("VolumeIncrementalCopy missing-volume error mismatch: %v", err)
+	}
+
+	readAllStream, err := grpcClient.ReadAllNeedles(ctx, &volume_server_pb.ReadAllNeedlesRequest{VolumeIds: []uint32{98763}})
+	if err == nil {
+		_, err = readAllStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "not found volume") {
+		t.Fatalf("ReadAllNeedles missing-volume error mismatch: %v", err)
+	}
+
+	copyFileStream, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{VolumeId: 98764, Ext: ".dat", StopOffset: 1})
+	if err == nil {
+		_, err = copyFileStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "not found volume") {
+		t.Fatalf("CopyFile missing-volume error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.ReadVolumeFileStatus(ctx, &volume_server_pb.ReadVolumeFileStatusRequest{VolumeId: 98765})
+	if err == nil || !strings.Contains(err.Error(), "not found volume") {
+		t.Fatalf("ReadVolumeFileStatus missing-volume error mismatch: %v", err)
+	}
+}
+
+func TestVolumeCopyAndReceiveFileMaintenanceRejection(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stateResp, err := grpcClient.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = grpcClient.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{Maintenance: true, Version: stateResp.GetState().GetVersion()},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	copyStream, err := grpcClient.VolumeCopy(ctx, &volume_server_pb.VolumeCopyRequest{VolumeId: 1, SourceDataNode: "127.0.0.1:1234"})
+	if err == nil {
+		_, err = copyStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("VolumeCopy maintenance error mismatch: %v", err)
+	}
+
+	receiveClient, err := grpcClient.ReceiveFile(ctx)
+	if err != nil {
+		t.Fatalf("ReceiveFile client creation failed: %v", err)
+	}
+	_ = receiveClient.Send(&volume_server_pb.ReceiveFileRequest{
+		Data: &volume_server_pb.ReceiveFileRequest_Info{
+			Info: &volume_server_pb.ReceiveFileInfo{VolumeId: 1, Ext: ".dat"},
+		},
+	})
+	_, err = receiveClient.CloseAndRecv()
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("ReceiveFile maintenance error mismatch: %v", err)
+	}
+}
+
+func TestVolumeCopySuccessFromPeerAndMountsDestination(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartDualVolumeCluster(t, matrix.P1())
+	sourceConn, sourceClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer sourceConn.Close()
+	destConn, destClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(1))
+	defer destConn.Close()
+
+	const volumeID = uint32(42)
+	framework.AllocateVolume(t, sourceClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 880001, 0x12345678)
+	payload := []byte("volume-copy-success-payload")
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(0), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload to source expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	copyStream, err := destClient.VolumeCopy(ctx, &volume_server_pb.VolumeCopyRequest{
+		VolumeId:       volumeID,
+		Collection:     "",
+		SourceDataNode: clusterHarness.VolumeAdminAddress(0) + "." + strings.Split(clusterHarness.VolumeGRPCAddress(0), ":")[1],
+	})
+	if err != nil {
+		t.Fatalf("VolumeCopy start failed: %v", err)
+	}
+
+	sawFinalAppendTimestamp := false
+	for {
+		msg, recvErr := copyStream.Recv()
+		if recvErr == io.EOF {
+			break
+		}
+		if recvErr != nil {
+			t.Fatalf("VolumeCopy recv failed: %v", recvErr)
+		}
+		if msg.GetLastAppendAtNs() > 0 {
+			sawFinalAppendTimestamp = true
+		}
+	}
+	if !sawFinalAppendTimestamp {
+		t.Fatalf("VolumeCopy expected final response with last_append_at_ns")
+	}
+
+	destReadResp := framework.ReadBytes(t, httpClient, clusterHarness.VolumeAdminURL(1), fid)
+	destReadBody := framework.ReadAllAndClose(t, destReadResp)
+	if destReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("read from copied destination expected 200, got %d", destReadResp.StatusCode)
+	}
+	if string(destReadBody) != string(payload) {
+		t.Fatalf("destination copied payload mismatch: got %q want %q", string(destReadBody), string(payload))
+	}
+}
+
+func TestVolumeCopyOverwritesExistingDestinationVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartDualVolumeCluster(t, matrix.P1())
+	sourceConn, sourceClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer sourceConn.Close()
+	destConn, destClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(1))
+	defer destConn.Close()
+
+	const volumeID = uint32(43)
+	framework.AllocateVolume(t, sourceClient, volumeID, "")
+	framework.AllocateVolume(t, destClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 880002, 0x23456789)
+	sourcePayload := []byte("volume-copy-overwrite-source")
+	destPayload := []byte("volume-copy-overwrite-destination-old")
+
+	sourceUploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(0), fid, sourcePayload)
+	_ = framework.ReadAllAndClose(t, sourceUploadResp)
+	if sourceUploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload to source expected 201, got %d", sourceUploadResp.StatusCode)
+	}
+
+	destUploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(1), fid, destPayload)
+	_ = framework.ReadAllAndClose(t, destUploadResp)
+	if destUploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload to destination expected 201, got %d", destUploadResp.StatusCode)
+	}
+
+	destReadBeforeResp := framework.ReadBytes(t, httpClient, clusterHarness.VolumeAdminURL(1), fid)
+	destReadBeforeBody := framework.ReadAllAndClose(t, destReadBeforeResp)
+	if destReadBeforeResp.StatusCode != http.StatusOK {
+		t.Fatalf("destination pre-copy read expected 200, got %d", destReadBeforeResp.StatusCode)
+	}
+	if string(destReadBeforeBody) != string(destPayload) {
+		t.Fatalf("destination pre-copy payload mismatch: got %q want %q", string(destReadBeforeBody), string(destPayload))
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	copyStream, err := destClient.VolumeCopy(ctx, &volume_server_pb.VolumeCopyRequest{
+		VolumeId:       volumeID,
+		Collection:     "",
+		SourceDataNode: clusterHarness.VolumeAdminAddress(0) + "." + strings.Split(clusterHarness.VolumeGRPCAddress(0), ":")[1],
+	})
+	if err != nil {
+		t.Fatalf("VolumeCopy overwrite start failed: %v", err)
+	}
+
+	sawFinalAppendTimestamp := false
+	for {
+		msg, recvErr := copyStream.Recv()
+		if recvErr == io.EOF {
+			break
+		}
+		if recvErr != nil {
+			t.Fatalf("VolumeCopy overwrite recv failed: %v", recvErr)
+		}
+		if msg.GetLastAppendAtNs() > 0 {
+			sawFinalAppendTimestamp = true
+		}
+	}
+	if !sawFinalAppendTimestamp {
+		t.Fatalf("VolumeCopy overwrite expected final response with last_append_at_ns")
+	}
+
+	destReadAfterResp := framework.ReadBytes(t, httpClient, clusterHarness.VolumeAdminURL(1), fid)
+	destReadAfterBody := framework.ReadAllAndClose(t, destReadAfterResp)
+	if destReadAfterResp.StatusCode != http.StatusOK {
+		t.Fatalf("destination post-copy read expected 200, got %d", destReadAfterResp.StatusCode)
+	}
+	if string(destReadAfterBody) != string(sourcePayload) {
+		t.Fatalf("destination post-copy payload mismatch: got %q want %q", string(destReadAfterBody), string(sourcePayload))
+	}
+}

test/volume_server/grpc/data_rw_test.go

@@ -0,0 +1,146 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestReadNeedleBlobAndMetaMissingVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.ReadNeedleBlob(ctx, &volume_server_pb.ReadNeedleBlobRequest{
+		VolumeId: 99111,
+		Offset:   0,
+		Size:     16,
+	})
+	if err == nil {
+		t.Fatalf("ReadNeedleBlob should fail for missing volume")
+	}
+	if !strings.Contains(err.Error(), "not found volume") {
+		t.Fatalf("ReadNeedleBlob missing volume error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.ReadNeedleMeta(ctx, &volume_server_pb.ReadNeedleMetaRequest{
+		VolumeId: 99112,
+		NeedleId: 1,
+		Offset:   0,
+		Size:     16,
+	})
+	if err == nil {
+		t.Fatalf("ReadNeedleMeta should fail for missing volume")
+	}
+	if !strings.Contains(err.Error(), "not found volume") {
+		t.Fatalf("ReadNeedleMeta missing volume error mismatch: %v", err)
+	}
+}
+
+func TestWriteNeedleBlobMaintenanceAndMissingVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.WriteNeedleBlob(ctx, &volume_server_pb.WriteNeedleBlobRequest{
+		VolumeId:   99113,
+		NeedleId:   1,
+		NeedleBlob: []byte("abc"),
+		Size:       3,
+	})
+	if err == nil {
+		t.Fatalf("WriteNeedleBlob should fail for missing volume")
+	}
+	if !strings.Contains(err.Error(), "not found volume") {
+		t.Fatalf("WriteNeedleBlob missing volume error mismatch: %v", err)
+	}
+
+	stateResp, err := grpcClient.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = grpcClient.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{Maintenance: true, Version: stateResp.GetState().GetVersion()},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	_, err = grpcClient.WriteNeedleBlob(ctx, &volume_server_pb.WriteNeedleBlobRequest{
+		VolumeId:   1,
+		NeedleId:   2,
+		NeedleBlob: []byte("def"),
+		Size:       3,
+	})
+	if err == nil {
+		t.Fatalf("WriteNeedleBlob should fail in maintenance mode")
+	}
+	if !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("WriteNeedleBlob maintenance mode error mismatch: %v", err)
+	}
+}
+
+func TestReadNeedleBlobAndMetaInvalidOffsets(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(92)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 880001, 0xCCDD1122)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, []byte("invalid-offset-check"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != 201 {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.ReadNeedleBlob(ctx, &volume_server_pb.ReadNeedleBlobRequest{
+		VolumeId: volumeID,
+		Offset:   1 << 40,
+		Size:     64,
+	})
+	if err == nil {
+		t.Fatalf("ReadNeedleBlob should fail for invalid offset")
+	}
+	if !strings.Contains(strings.ToLower(err.Error()), "read needle blob") {
+		t.Fatalf("ReadNeedleBlob invalid offset error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.ReadNeedleMeta(ctx, &volume_server_pb.ReadNeedleMetaRequest{
+		VolumeId: volumeID,
+		NeedleId: 880001,
+		Offset:   1 << 40,
+		Size:     64,
+	})
+	if err == nil {
+		t.Fatalf("ReadNeedleMeta should fail for invalid offset")
+	}
+}

test/volume_server/grpc/data_stream_success_test.go

@@ -0,0 +1,273 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"io"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/seaweedfs/seaweedfs/weed/storage/idx"
+	"github.com/seaweedfs/seaweedfs/weed/storage/types"
+)
+
+func TestReadWriteNeedleBlobAndMetaRoundTrip(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(83)
+	const sourceNeedleID = uint64(333333)
+	const sourceCookie = uint32(0xABCD0102)
+	const clonedNeedleID = uint64(333334)
+
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	payload := []byte("blob-roundtrip-content")
+	fid := framework.NewFileID(volumeID, sourceNeedleID, sourceCookie)
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != 201 {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	fileStatus, err := grpcClient.ReadVolumeFileStatus(ctx, &volume_server_pb.ReadVolumeFileStatusRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("ReadVolumeFileStatus failed: %v", err)
+	}
+	if fileStatus.GetIdxFileSize() == 0 {
+		t.Fatalf("expected non-zero idx file size after upload")
+	}
+
+	idxBytes := copyFileBytes(t, grpcClient, &volume_server_pb.CopyFileRequest{
+		VolumeId:           volumeID,
+		Ext:                ".idx",
+		CompactionRevision: fileStatus.GetCompactionRevision(),
+		StopOffset:         fileStatus.GetIdxFileSize(),
+	})
+	offset, size := findNeedleOffsetAndSize(t, idxBytes, sourceNeedleID)
+
+	blobResp, err := grpcClient.ReadNeedleBlob(ctx, &volume_server_pb.ReadNeedleBlobRequest{
+		VolumeId: volumeID,
+		Offset:   offset,
+		Size:     size,
+	})
+	if err != nil {
+		t.Fatalf("ReadNeedleBlob failed: %v", err)
+	}
+	if len(blobResp.GetNeedleBlob()) == 0 {
+		t.Fatalf("ReadNeedleBlob returned empty blob")
+	}
+
+	metaResp, err := grpcClient.ReadNeedleMeta(ctx, &volume_server_pb.ReadNeedleMetaRequest{
+		VolumeId: volumeID,
+		NeedleId: sourceNeedleID,
+		Offset:   offset,
+		Size:     size,
+	})
+	if err != nil {
+		t.Fatalf("ReadNeedleMeta failed: %v", err)
+	}
+	if metaResp.GetCookie() != sourceCookie {
+		t.Fatalf("ReadNeedleMeta cookie mismatch: got %d want %d", metaResp.GetCookie(), sourceCookie)
+	}
+
+	_, err = grpcClient.WriteNeedleBlob(ctx, &volume_server_pb.WriteNeedleBlobRequest{
+		VolumeId:   volumeID,
+		NeedleId:   clonedNeedleID,
+		Size:       size,
+		NeedleBlob: blobResp.GetNeedleBlob(),
+	})
+	if err != nil {
+		t.Fatalf("WriteNeedleBlob failed: %v", err)
+	}
+
+	clonedStatus, err := grpcClient.VolumeNeedleStatus(ctx, &volume_server_pb.VolumeNeedleStatusRequest{
+		VolumeId: volumeID,
+		NeedleId: clonedNeedleID,
+	})
+	if err != nil {
+		t.Fatalf("VolumeNeedleStatus for cloned needle failed: %v", err)
+	}
+	if clonedStatus.GetNeedleId() != sourceNeedleID {
+		t.Fatalf("cloned needle status id mismatch: got %d want %d", clonedStatus.GetNeedleId(), sourceNeedleID)
+	}
+	if clonedStatus.GetCookie() != sourceCookie {
+		t.Fatalf("cloned needle cookie mismatch: got %d want %d", clonedStatus.GetCookie(), sourceCookie)
+	}
+
+	clonedReadResp := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), framework.NewFileID(volumeID, clonedNeedleID, sourceCookie))
+	clonedReadBody := framework.ReadAllAndClose(t, clonedReadResp)
+	if clonedReadResp.StatusCode != 200 {
+		t.Fatalf("cloned needle GET expected 200, got %d", clonedReadResp.StatusCode)
+	}
+	if string(clonedReadBody) != string(payload) {
+		t.Fatalf("cloned needle body mismatch: got %q want %q", string(clonedReadBody), string(payload))
+	}
+}
+
+func TestReadAllNeedlesStreamsUploadedRecords(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(84)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	expected := map[uint64]string{
+		444441: "read-all-needle-one",
+		444442: "read-all-needle-two",
+	}
+	for key, body := range expected {
+		resp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), framework.NewFileID(volumeID, key, 0xA0B0C0D0), []byte(body))
+		_ = framework.ReadAllAndClose(t, resp)
+		if resp.StatusCode != 201 {
+			t.Fatalf("upload for key %d expected 201, got %d", key, resp.StatusCode)
+		}
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stream, err := grpcClient.ReadAllNeedles(ctx, &volume_server_pb.ReadAllNeedlesRequest{VolumeIds: []uint32{volumeID}})
+	if err != nil {
+		t.Fatalf("ReadAllNeedles start failed: %v", err)
+	}
+
+	seen := map[uint64]string{}
+	for {
+		msg, recvErr := stream.Recv()
+		if recvErr == io.EOF {
+			break
+		}
+		if recvErr != nil {
+			t.Fatalf("ReadAllNeedles recv failed: %v", recvErr)
+		}
+		if _, wanted := expected[msg.GetNeedleId()]; wanted {
+			seen[msg.GetNeedleId()] = string(msg.GetNeedleBlob())
+		}
+	}
+
+	for key, body := range expected {
+		got, found := seen[key]
+		if !found {
+			t.Fatalf("ReadAllNeedles missing key %d in stream", key)
+		}
+		if got != body {
+			t.Fatalf("ReadAllNeedles body mismatch for key %d: got %q want %q", key, got, body)
+		}
+	}
+}
+
+func TestReadAllNeedlesExistingThenMissingVolumeAbortsStream(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const existingVolumeID = uint32(85)
+	const missingVolumeID = uint32(98585)
+	const needleID = uint64(445551)
+	framework.AllocateVolume(t, grpcClient, existingVolumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(existingVolumeID, needleID, 0xAA11BB22)
+	payload := "read-all-existing-then-missing"
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, []byte(payload))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != 201 {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stream, err := grpcClient.ReadAllNeedles(ctx, &volume_server_pb.ReadAllNeedlesRequest{
+		VolumeIds: []uint32{existingVolumeID, missingVolumeID},
+	})
+	if err != nil {
+		t.Fatalf("ReadAllNeedles start failed: %v", err)
+	}
+
+	seenUploadedNeedle := false
+	for {
+		msg, recvErr := stream.Recv()
+		if recvErr == io.EOF {
+			t.Fatalf("ReadAllNeedles expected stream error for missing volume, got EOF")
+		}
+		if recvErr != nil {
+			if !strings.Contains(recvErr.Error(), "not found volume id") {
+				t.Fatalf("ReadAllNeedles missing-volume error mismatch: %v", recvErr)
+			}
+			break
+		}
+		if msg.GetNeedleId() == needleID && string(msg.GetNeedleBlob()) == payload {
+			seenUploadedNeedle = true
+		}
+	}
+
+	if !seenUploadedNeedle {
+		t.Fatalf("ReadAllNeedles should stream entries from existing volume before missing-volume abort")
+	}
+}
+
+func copyFileBytes(t testing.TB, grpcClient volume_server_pb.VolumeServerClient, req *volume_server_pb.CopyFileRequest) []byte {
+	t.Helper()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stream, err := grpcClient.CopyFile(ctx, req)
+	if err != nil {
+		t.Fatalf("CopyFile start failed: %v", err)
+	}
+
+	var out []byte
+	for {
+		msg, recvErr := stream.Recv()
+		if recvErr == io.EOF {
+			return out
+		}
+		if recvErr != nil {
+			t.Fatalf("CopyFile recv failed: %v", recvErr)
+		}
+		out = append(out, msg.GetFileContent()...)
+	}
+}
+
+func findNeedleOffsetAndSize(t testing.TB, idxBytes []byte, needleID uint64) (offset int64, size int32) {
+	t.Helper()
+
+	for i := 0; i+types.NeedleMapEntrySize <= len(idxBytes); i += types.NeedleMapEntrySize {
+		key, entryOffset, entrySize := idx.IdxFileEntry(idxBytes[i : i+types.NeedleMapEntrySize])
+		if uint64(key) != needleID {
+			continue
+		}
+		if entryOffset.IsZero() || entrySize <= 0 {
+			continue
+		}
+		return entryOffset.ToActualOffset(), int32(entrySize)
+	}
+
+	t.Fatalf("needle id %d not found in idx entries", needleID)
+	return 0, 0
+}

test/volume_server/grpc/erasure_coding_test.go

@@ -0,0 +1,777 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"io"
+	"math"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/seaweedfs/seaweedfs/weed/storage/erasure_coding"
+	"github.com/seaweedfs/seaweedfs/weed/storage/needle"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func TestEcMaintenanceModeRejections(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stateResp, err := grpcClient.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = grpcClient.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{
+			Maintenance: true,
+			Version:     stateResp.GetState().GetVersion(),
+		},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{VolumeId: 1, Collection: ""})
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("VolumeEcShardsGenerate maintenance error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsCopy(ctx, &volume_server_pb.VolumeEcShardsCopyRequest{
+		VolumeId:       1,
+		Collection:     "",
+		SourceDataNode: "127.0.0.1:1",
+		ShardIds:       []uint32{0},
+	})
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("VolumeEcShardsCopy maintenance error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsDelete(ctx, &volume_server_pb.VolumeEcShardsDeleteRequest{
+		VolumeId:   1,
+		Collection: "",
+		ShardIds:   []uint32{0},
+	})
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("VolumeEcShardsDelete maintenance error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcBlobDelete(ctx, &volume_server_pb.VolumeEcBlobDeleteRequest{
+		VolumeId:   1,
+		Collection: "",
+		FileKey:    1,
+		Version:    3,
+	})
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("VolumeEcBlobDelete maintenance error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsToVolume(ctx, &volume_server_pb.VolumeEcShardsToVolumeRequest{
+		VolumeId:   1,
+		Collection: "",
+	})
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("VolumeEcShardsToVolume maintenance error mismatch: %v", err)
+	}
+}
+
+func TestEcMissingInvalidAndNoopPaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+		VolumeId:   98791,
+		Collection: "",
+	})
+	if err == nil || !strings.Contains(err.Error(), "not found") {
+		t.Fatalf("VolumeEcShardsGenerate missing-volume error mismatch: %v", err)
+	}
+
+	rebuildResp, err := grpcClient.VolumeEcShardsRebuild(ctx, &volume_server_pb.VolumeEcShardsRebuildRequest{
+		VolumeId:   98792,
+		Collection: "ec-rebuild",
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsRebuild missing-volume should return empty success, got: %v", err)
+	}
+	if len(rebuildResp.GetRebuiltShardIds()) != 0 {
+		t.Fatalf("VolumeEcShardsRebuild expected no rebuilt shards for missing volume, got %v", rebuildResp.GetRebuiltShardIds())
+	}
+
+	_, err = grpcClient.VolumeEcShardsCopy(ctx, &volume_server_pb.VolumeEcShardsCopyRequest{
+		VolumeId:       98793,
+		Collection:     "ec-copy",
+		SourceDataNode: "127.0.0.1:1",
+		ShardIds:       []uint32{0},
+		DiskId:         99,
+	})
+	if err == nil || !strings.Contains(err.Error(), "invalid disk_id") {
+		t.Fatalf("VolumeEcShardsCopy invalid-disk error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsDelete(ctx, &volume_server_pb.VolumeEcShardsDeleteRequest{
+		VolumeId:   98794,
+		Collection: "ec-delete",
+		ShardIds:   []uint32{0, 1},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsDelete missing-volume should be no-op success, got: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
+		VolumeId:   98795,
+		Collection: "ec-mount",
+		ShardIds:   []uint32{0},
+	})
+	if err == nil {
+		t.Fatalf("VolumeEcShardsMount should fail for missing EC shards")
+	}
+
+	_, err = grpcClient.VolumeEcShardsUnmount(ctx, &volume_server_pb.VolumeEcShardsUnmountRequest{
+		VolumeId: 98796,
+		ShardIds: []uint32{0},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsUnmount missing shards should be no-op success, got: %v", err)
+	}
+
+	readStream, err := grpcClient.VolumeEcShardRead(ctx, &volume_server_pb.VolumeEcShardReadRequest{
+		VolumeId: 98797,
+		ShardId:  0,
+		Offset:   0,
+		Size:     1,
+	})
+	if err == nil {
+		_, err = readStream.Recv()
+	}
+	if err == nil || err == io.EOF {
+		t.Fatalf("VolumeEcShardRead should fail for missing EC volume")
+	}
+
+	_, err = grpcClient.VolumeEcBlobDelete(ctx, &volume_server_pb.VolumeEcBlobDeleteRequest{
+		VolumeId:   98798,
+		Collection: "ec-blob",
+		FileKey:    1,
+		Version:    3,
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcBlobDelete missing local EC volume should be no-op success, got: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsToVolume(ctx, &volume_server_pb.VolumeEcShardsToVolumeRequest{
+		VolumeId:   98799,
+		Collection: "ec-to-volume",
+	})
+	if err == nil || !strings.Contains(err.Error(), "not found") {
+		t.Fatalf("VolumeEcShardsToVolume missing-volume error mismatch: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsInfo(ctx, &volume_server_pb.VolumeEcShardsInfoRequest{
+		VolumeId: 98800,
+	})
+	if err == nil || !strings.Contains(err.Error(), "not found") {
+		t.Fatalf("VolumeEcShardsInfo missing-volume error mismatch: %v", err)
+	}
+}
+
+func TestEcGenerateMountInfoUnmountLifecycle(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(115)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 990001, 0x1234ABCD)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, []byte("ec-generate-lifecycle-content"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsGenerate success path failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		ShardIds:   []uint32{0},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsMount success path failed: %v", err)
+	}
+
+	infoResp, err := grpcClient.VolumeEcShardsInfo(ctx, &volume_server_pb.VolumeEcShardsInfoRequest{
+		VolumeId: volumeID,
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsInfo after mount failed: %v", err)
+	}
+	if len(infoResp.GetEcShardInfos()) == 0 {
+		t.Fatalf("VolumeEcShardsInfo expected non-empty shard infos after mount")
+	}
+	if infoResp.GetVolumeSize() == 0 {
+		t.Fatalf("VolumeEcShardsInfo expected non-zero volume size after mount")
+	}
+
+	_, err = grpcClient.VolumeEcShardsUnmount(ctx, &volume_server_pb.VolumeEcShardsUnmountRequest{
+		VolumeId: volumeID,
+		ShardIds: []uint32{0},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsUnmount success path failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsInfo(ctx, &volume_server_pb.VolumeEcShardsInfoRequest{
+		VolumeId: volumeID,
+	})
+	if err == nil || !strings.Contains(err.Error(), "not found") {
+		t.Fatalf("VolumeEcShardsInfo after unmount expected not-found error, got: %v", err)
+	}
+}
+
+func TestEcShardReadAndBlobDeleteLifecycle(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(116)
+	const fileKey = uint64(990002)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, fileKey, 0x2233CCDD)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, []byte("ec-shard-read-delete-content"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsGenerate failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		ShardIds:   []uint32{0},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsMount failed: %v", err)
+	}
+
+	readStream, err := grpcClient.VolumeEcShardRead(ctx, &volume_server_pb.VolumeEcShardReadRequest{
+		VolumeId: volumeID,
+		ShardId:  0,
+		Offset:   0,
+		Size:     1,
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardRead start failed: %v", err)
+	}
+	firstChunk, err := readStream.Recv()
+	if err != nil {
+		t.Fatalf("VolumeEcShardRead recv failed: %v", err)
+	}
+	if len(firstChunk.GetData()) == 0 {
+		t.Fatalf("VolumeEcShardRead expected non-empty data chunk before deletion")
+	}
+
+	_, err = grpcClient.VolumeEcBlobDelete(ctx, &volume_server_pb.VolumeEcBlobDeleteRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		FileKey:    fileKey,
+		Version:    uint32(needle.GetCurrentVersion()),
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcBlobDelete first delete failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcBlobDelete(ctx, &volume_server_pb.VolumeEcBlobDeleteRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		FileKey:    fileKey,
+		Version:    uint32(needle.GetCurrentVersion()),
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcBlobDelete second delete should be idempotent success, got: %v", err)
+	}
+
+	deletedStream, err := grpcClient.VolumeEcShardRead(ctx, &volume_server_pb.VolumeEcShardReadRequest{
+		VolumeId: volumeID,
+		ShardId:  0,
+		FileKey:  fileKey,
+		Offset:   0,
+		Size:     1,
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardRead deleted-check start failed: %v", err)
+	}
+	deletedMsg, err := deletedStream.Recv()
+	if err != nil {
+		t.Fatalf("VolumeEcShardRead deleted-check recv failed: %v", err)
+	}
+	if !deletedMsg.GetIsDeleted() {
+		t.Fatalf("VolumeEcShardRead expected IsDeleted=true after blob delete")
+	}
+	_, err = deletedStream.Recv()
+	if err != io.EOF {
+		t.Fatalf("VolumeEcShardRead deleted-check expected EOF after deleted marker, got: %v", err)
+	}
+}
+
+func TestEcRebuildMissingShardLifecycle(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(117)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 990003, 0x3344DDEE)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, []byte("ec-rebuild-shard-content"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsGenerate failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsDelete(ctx, &volume_server_pb.VolumeEcShardsDeleteRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		ShardIds:   []uint32{0},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsDelete shard 0 failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		ShardIds:   []uint32{0},
+	})
+	if err == nil {
+		t.Fatalf("VolumeEcShardsMount should fail when shard 0 has been deleted")
+	}
+
+	rebuildResp, err := grpcClient.VolumeEcShardsRebuild(ctx, &volume_server_pb.VolumeEcShardsRebuildRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsRebuild failed: %v", err)
+	}
+	if len(rebuildResp.GetRebuiltShardIds()) == 0 {
+		t.Fatalf("VolumeEcShardsRebuild expected rebuilt shard ids")
+	}
+	foundShard0 := false
+	for _, shardID := range rebuildResp.GetRebuiltShardIds() {
+		if shardID == 0 {
+			foundShard0 = true
+			break
+		}
+	}
+	if !foundShard0 {
+		t.Fatalf("VolumeEcShardsRebuild expected shard 0 to be rebuilt, got %v", rebuildResp.GetRebuiltShardIds())
+	}
+
+	_, err = grpcClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		ShardIds:   []uint32{0},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsMount shard 0 after rebuild failed: %v", err)
+	}
+}
+
+func TestEcShardsToVolumeMissingShardAndNoLiveEntries(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	httpClient := framework.NewHTTPClient()
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	t.Run("missing shard returns error", func(t *testing.T) {
+		const volumeID = uint32(118)
+		framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+		fid := framework.NewFileID(volumeID, 990004, 0x4455EEFF)
+		uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, []byte("ec-to-volume-missing-shard-content"))
+		_ = framework.ReadAllAndClose(t, uploadResp)
+		if uploadResp.StatusCode != http.StatusCreated {
+			t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+		}
+
+		_, err := grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+			VolumeId:   volumeID,
+			Collection: "",
+		})
+		if err != nil {
+			t.Fatalf("VolumeEcShardsGenerate failed: %v", err)
+		}
+
+		_, err = grpcClient.VolumeEcShardsDelete(ctx, &volume_server_pb.VolumeEcShardsDeleteRequest{
+			VolumeId:   volumeID,
+			Collection: "",
+			ShardIds:   []uint32{0},
+		})
+		if err != nil {
+			t.Fatalf("VolumeEcShardsDelete shard 0 failed: %v", err)
+		}
+
+		_, err = grpcClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
+			VolumeId:   volumeID,
+			Collection: "",
+			ShardIds:   []uint32{1},
+		})
+		if err != nil {
+			t.Fatalf("VolumeEcShardsMount shard 1 failed: %v", err)
+		}
+
+		_, err = grpcClient.VolumeEcShardsToVolume(ctx, &volume_server_pb.VolumeEcShardsToVolumeRequest{
+			VolumeId:   volumeID,
+			Collection: "",
+		})
+		if err == nil || !strings.Contains(err.Error(), "missing shard 0") {
+			t.Fatalf("VolumeEcShardsToVolume missing-shard error mismatch: %v", err)
+		}
+	})
+
+	t.Run("no live entries returns failed precondition", func(t *testing.T) {
+		const volumeID = uint32(119)
+		const needleID = uint64(990005)
+		const cookie = uint32(0x5566FF11)
+		framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+		fid := framework.NewFileID(volumeID, needleID, cookie)
+		uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, []byte("ec-no-live-entries-content"))
+		_ = framework.ReadAllAndClose(t, uploadResp)
+		if uploadResp.StatusCode != http.StatusCreated {
+			t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+		}
+
+		deleteResp := framework.DoRequest(t, httpClient, mustNewRequest(t, http.MethodDelete, clusterHarness.VolumeAdminURL()+"/"+fid))
+		_ = framework.ReadAllAndClose(t, deleteResp)
+		if deleteResp.StatusCode != http.StatusAccepted {
+			t.Fatalf("delete expected 202, got %d", deleteResp.StatusCode)
+		}
+
+		_, err := grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+			VolumeId:   volumeID,
+			Collection: "",
+		})
+		if err != nil {
+			t.Fatalf("VolumeEcShardsGenerate failed: %v", err)
+		}
+
+		_, err = grpcClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
+			VolumeId:   volumeID,
+			Collection: "",
+			ShardIds:   []uint32{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+		})
+		if err != nil {
+			t.Fatalf("VolumeEcShardsMount data shards failed: %v", err)
+		}
+
+		_, err = grpcClient.VolumeEcShardsToVolume(ctx, &volume_server_pb.VolumeEcShardsToVolumeRequest{
+			VolumeId:   volumeID,
+			Collection: "",
+		})
+		if err == nil {
+			t.Fatalf("VolumeEcShardsToVolume expected failed-precondition error when no live entries")
+		}
+		if status.Code(err) != codes.FailedPrecondition {
+			t.Fatalf("VolumeEcShardsToVolume no-live-entries expected FailedPrecondition, got %v (%v)", status.Code(err), err)
+		}
+		if !strings.Contains(err.Error(), erasure_coding.EcNoLiveEntriesSubstring) {
+			t.Fatalf("VolumeEcShardsToVolume no-live-entries error should mention %q, got %v", erasure_coding.EcNoLiveEntriesSubstring, err)
+		}
+	})
+}
+
+func TestEcShardsToVolumeSuccessRoundTrip(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(120)
+	const needleID = uint64(990006)
+	const cookie = uint32(0x66771122)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	payload := []byte("ec-shards-to-volume-success-roundtrip-content")
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsGenerate failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsMount(ctx, &volume_server_pb.VolumeEcShardsMountRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		ShardIds:   []uint32{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsMount data shards failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsToVolume(ctx, &volume_server_pb.VolumeEcShardsToVolumeRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsToVolume success path failed: %v", err)
+	}
+
+	readResp := framework.ReadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid)
+	readBody := framework.ReadAllAndClose(t, readResp)
+	if readResp.StatusCode != http.StatusOK {
+		t.Fatalf("post-conversion read expected 200, got %d", readResp.StatusCode)
+	}
+	if string(readBody) != string(payload) {
+		t.Fatalf("post-conversion payload mismatch: got %q want %q", string(readBody), string(payload))
+	}
+}
+
+func TestEcShardsDeleteLastShardRemovesEcx(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(121)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 990007, 0x77882233)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, []byte("ec-delete-all-shards-content"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsGenerate failed: %v", err)
+	}
+
+	// Verify .ecx is present before deleting all shards.
+	ecxBeforeDelete, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:           volumeID,
+		Collection:         "",
+		IsEcVolume:         true,
+		Ext:                ".ecx",
+		CompactionRevision: math.MaxUint32,
+		StopOffset:         1,
+	})
+	if err != nil {
+		t.Fatalf("CopyFile .ecx before shard deletion start failed: %v", err)
+	}
+	if _, err = ecxBeforeDelete.Recv(); err != nil {
+		t.Fatalf("CopyFile .ecx before shard deletion recv failed: %v", err)
+	}
+
+	_, err = grpcClient.VolumeEcShardsDelete(ctx, &volume_server_pb.VolumeEcShardsDeleteRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+		ShardIds:   []uint32{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13},
+	})
+	if err != nil {
+		t.Fatalf("VolumeEcShardsDelete all shards failed: %v", err)
+	}
+
+	ecxAfterDelete, err := grpcClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+		VolumeId:           volumeID,
+		Collection:         "",
+		IsEcVolume:         true,
+		Ext:                ".ecx",
+		CompactionRevision: math.MaxUint32,
+		StopOffset:         1,
+	})
+	if err == nil {
+		_, err = ecxAfterDelete.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "not found ec volume id") {
+		t.Fatalf("CopyFile .ecx after deleting all shards should fail not-found, got: %v", err)
+	}
+}
+
+func TestEcShardsCopyFromPeerSuccess(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartDualVolumeCluster(t, matrix.P1())
+	sourceConn, sourceClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer sourceConn.Close()
+	destConn, destClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(1))
+	defer destConn.Close()
+
+	const volumeID = uint32(122)
+	framework.AllocateVolume(t, sourceClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 990008, 0x88993344)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(0), fid, []byte("ec-copy-from-peer-content"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("source upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	_, err := sourceClient.VolumeEcShardsGenerate(ctx, &volume_server_pb.VolumeEcShardsGenerateRequest{
+		VolumeId:   volumeID,
+		Collection: "",
+	})
+	if err != nil {
+		t.Fatalf("source VolumeEcShardsGenerate failed: %v", err)
+	}
+
+	sourceDataNode := clusterHarness.VolumeAdminAddress(0) + "." + strings.Split(clusterHarness.VolumeGRPCAddress(0), ":")[1]
+	_, err = destClient.VolumeEcShardsCopy(ctx, &volume_server_pb.VolumeEcShardsCopyRequest{
+		VolumeId:       volumeID,
+		Collection:     "",
+		SourceDataNode: sourceDataNode,
+		ShardIds:       []uint32{0},
+		CopyEcxFile:    true,
+		CopyVifFile:    true,
+	})
+	if err != nil {
+		t.Fatalf("destination VolumeEcShardsCopy success path failed: %v", err)
+	}
+
+	for _, ext := range []string{".ec00", ".ecx", ".vif"} {
+		copyStream, copyErr := destClient.CopyFile(ctx, &volume_server_pb.CopyFileRequest{
+			VolumeId:           volumeID,
+			Collection:         "",
+			IsEcVolume:         true,
+			Ext:                ext,
+			CompactionRevision: math.MaxUint32,
+			StopOffset:         1,
+		})
+		if copyErr != nil {
+			t.Fatalf("destination CopyFile %s start failed: %v", ext, copyErr)
+		}
+		if _, copyErr = copyStream.Recv(); copyErr != nil {
+			t.Fatalf("destination CopyFile %s recv failed: %v", ext, copyErr)
+		}
+	}
+}
+
+func TestEcShardsCopyFailsWhenSourceUnavailable(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeEcShardsCopy(ctx, &volume_server_pb.VolumeEcShardsCopyRequest{
+		VolumeId:       12345,
+		Collection:     "",
+		SourceDataNode: "127.0.0.1:1.1",
+		ShardIds:       []uint32{0},
+		CopyEcxFile:    true,
+	})
+	if err == nil || !strings.Contains(err.Error(), "VolumeEcShardsCopy volume") {
+		t.Fatalf("VolumeEcShardsCopy source-unavailable error mismatch: %v", err)
+	}
+}

test/volume_server/grpc/health_state_test.go

@@ -0,0 +1,139 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestStateAndStatusRPCs(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	initialState, err := client.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	if initialState.GetState() == nil {
+		t.Fatalf("GetState returned nil state")
+	}
+
+	setResp, err := client.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{
+			Maintenance: true,
+			Version:     initialState.GetState().GetVersion(),
+		},
+	})
+	if err != nil {
+		t.Fatalf("SetState(maintenance=true) failed: %v", err)
+	}
+	if !setResp.GetState().GetMaintenance() {
+		t.Fatalf("expected maintenance=true after SetState")
+	}
+
+	setResp, err = client.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{
+			Maintenance: false,
+			Version:     setResp.GetState().GetVersion(),
+		},
+	})
+	if err != nil {
+		t.Fatalf("SetState(maintenance=false) failed: %v", err)
+	}
+	if setResp.GetState().GetMaintenance() {
+		t.Fatalf("expected maintenance=false after SetState")
+	}
+
+	statusResp, err := client.VolumeServerStatus(ctx, &volume_server_pb.VolumeServerStatusRequest{})
+	if err != nil {
+		t.Fatalf("VolumeServerStatus failed: %v", err)
+	}
+	if statusResp.GetVersion() == "" {
+		t.Fatalf("VolumeServerStatus returned empty version")
+	}
+	if len(statusResp.GetDiskStatuses()) == 0 {
+		t.Fatalf("VolumeServerStatus returned no disk statuses")
+	}
+	if statusResp.GetState() == nil {
+		t.Fatalf("VolumeServerStatus returned nil state")
+	}
+	if statusResp.GetMemoryStatus() == nil {
+		t.Fatalf("VolumeServerStatus returned nil memory status")
+	}
+	if statusResp.GetMemoryStatus().GetGoroutines() <= 0 {
+		t.Fatalf("VolumeServerStatus memory status should report goroutines, got %d", statusResp.GetMemoryStatus().GetGoroutines())
+	}
+
+	pingResp, err := client.Ping(ctx, &volume_server_pb.PingRequest{})
+	if err != nil {
+		t.Fatalf("Ping failed: %v", err)
+	}
+	if pingResp.GetStartTimeNs() == 0 || pingResp.GetStopTimeNs() == 0 {
+		t.Fatalf("Ping timestamps should be non-zero: %+v", pingResp)
+	}
+	if pingResp.GetStopTimeNs() < pingResp.GetStartTimeNs() {
+		t.Fatalf("Ping stop time should be >= start time: %+v", pingResp)
+	}
+}
+
+func TestSetStateVersionMismatchAndNilStateNoop(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, client := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	initialState, err := client.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	initialVersion := initialState.GetState().GetVersion()
+
+	staleResp, err := client.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{
+			Maintenance: true,
+			Version:     initialVersion + 1,
+		},
+	})
+	if err == nil {
+		t.Fatalf("SetState with stale version should fail")
+	}
+	if !strings.Contains(err.Error(), "version mismatch") {
+		t.Fatalf("SetState stale version error mismatch: %v", err)
+	}
+	if staleResp.GetState().GetVersion() != initialVersion {
+		t.Fatalf("SetState stale version should not mutate server version: got %d want %d", staleResp.GetState().GetVersion(), initialVersion)
+	}
+	if staleResp.GetState().GetMaintenance() != initialState.GetState().GetMaintenance() {
+		t.Fatalf("SetState stale version should not mutate maintenance flag")
+	}
+
+	nilResp, err := client.SetState(ctx, &volume_server_pb.SetStateRequest{})
+	if err != nil {
+		t.Fatalf("SetState nil-state request should be no-op success: %v", err)
+	}
+	if nilResp.GetState().GetVersion() != initialVersion {
+		t.Fatalf("SetState nil-state should keep version unchanged: got %d want %d", nilResp.GetState().GetVersion(), initialVersion)
+	}
+	if nilResp.GetState().GetMaintenance() != initialState.GetState().GetMaintenance() {
+		t.Fatalf("SetState nil-state should keep maintenance unchanged")
+	}
+}

test/volume_server/grpc/scrub_query_test.go

@@ -0,0 +1,385 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"io"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestScrubVolumeIndexAndUnsupportedMode(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(61)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	indexResp, err := grpcClient.ScrubVolume(ctx, &volume_server_pb.ScrubVolumeRequest{
+		VolumeIds: []uint32{volumeID},
+		Mode:      volume_server_pb.VolumeScrubMode_INDEX,
+	})
+	if err != nil {
+		t.Fatalf("ScrubVolume index mode failed: %v", err)
+	}
+	if indexResp.GetTotalVolumes() != 1 {
+		t.Fatalf("ScrubVolume expected total_volumes=1, got %d", indexResp.GetTotalVolumes())
+	}
+
+	_, err = grpcClient.ScrubVolume(ctx, &volume_server_pb.ScrubVolumeRequest{
+		VolumeIds: []uint32{volumeID},
+		Mode:      volume_server_pb.VolumeScrubMode(99),
+	})
+	if err == nil {
+		t.Fatalf("ScrubVolume should fail for unsupported mode")
+	}
+	if !strings.Contains(err.Error(), "unsupported volume scrub mode") {
+		t.Fatalf("ScrubVolume unsupported mode error mismatch: %v", err)
+	}
+}
+
+func TestScrubEcVolumeMissingVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.ScrubEcVolume(ctx, &volume_server_pb.ScrubEcVolumeRequest{
+		VolumeIds: []uint32{98765},
+		Mode:      volume_server_pb.VolumeScrubMode_INDEX,
+	})
+	if err == nil {
+		t.Fatalf("ScrubEcVolume should fail for missing EC volume")
+	}
+	if !strings.Contains(err.Error(), "EC volume id") {
+		t.Fatalf("ScrubEcVolume missing-volume error mismatch: %v", err)
+	}
+}
+
+func TestScrubEcVolumeAutoSelectNoEcVolumes(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := grpcClient.ScrubEcVolume(ctx, &volume_server_pb.ScrubEcVolumeRequest{
+		Mode: volume_server_pb.VolumeScrubMode_INDEX,
+	})
+	if err != nil {
+		t.Fatalf("ScrubEcVolume auto-select failed: %v", err)
+	}
+	if resp.GetTotalVolumes() != 0 {
+		t.Fatalf("ScrubEcVolume auto-select expected total_volumes=0 without EC data, got %d", resp.GetTotalVolumes())
+	}
+	if len(resp.GetBrokenVolumeIds()) != 0 {
+		t.Fatalf("ScrubEcVolume auto-select expected no broken volumes, got %v", resp.GetBrokenVolumeIds())
+	}
+}
+
+func TestQueryInvalidAndMissingFileIDPaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	invalidStream, err := grpcClient.Query(ctx, &volume_server_pb.QueryRequest{
+		FromFileIds: []string{"bad-fid"},
+		Selections:  []string{"name"},
+		Filter:      &volume_server_pb.QueryRequest_Filter{},
+		InputSerialization: &volume_server_pb.QueryRequest_InputSerialization{
+			JsonInput: &volume_server_pb.QueryRequest_InputSerialization_JSONInput{},
+		},
+	})
+	if err == nil {
+		_, err = invalidStream.Recv()
+	}
+	if err == nil {
+		t.Fatalf("Query should fail for invalid file id")
+	}
+
+	missingFid := framework.NewFileID(98766, 1, 1)
+	missingStream, err := grpcClient.Query(ctx, &volume_server_pb.QueryRequest{
+		FromFileIds: []string{missingFid},
+		Selections:  []string{"name"},
+		Filter:      &volume_server_pb.QueryRequest_Filter{},
+		InputSerialization: &volume_server_pb.QueryRequest_InputSerialization{
+			JsonInput: &volume_server_pb.QueryRequest_InputSerialization_JSONInput{},
+		},
+	})
+	if err == nil {
+		_, err = missingStream.Recv()
+	}
+	if err == nil {
+		t.Fatalf("Query should fail for missing file id volume")
+	}
+}
+
+func TestScrubVolumeAutoSelectAndNotImplementedModes(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeIDA = uint32(62)
+	const volumeIDB = uint32(63)
+	framework.AllocateVolume(t, grpcClient, volumeIDA, "")
+	framework.AllocateVolume(t, grpcClient, volumeIDB, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	autoResp, err := grpcClient.ScrubVolume(ctx, &volume_server_pb.ScrubVolumeRequest{
+		Mode: volume_server_pb.VolumeScrubMode_INDEX,
+	})
+	if err != nil {
+		t.Fatalf("ScrubVolume auto-select failed: %v", err)
+	}
+	if autoResp.GetTotalVolumes() < 2 {
+		t.Fatalf("ScrubVolume auto-select expected at least 2 volumes, got %d", autoResp.GetTotalVolumes())
+	}
+
+	localResp, err := grpcClient.ScrubVolume(ctx, &volume_server_pb.ScrubVolumeRequest{
+		VolumeIds: []uint32{volumeIDA},
+		Mode:      volume_server_pb.VolumeScrubMode_LOCAL,
+	})
+	if err != nil {
+		t.Fatalf("ScrubVolume local mode failed: %v", err)
+	}
+	if localResp.GetTotalVolumes() != 1 {
+		t.Fatalf("ScrubVolume local mode expected total_volumes=1, got %d", localResp.GetTotalVolumes())
+	}
+	if len(localResp.GetBrokenVolumeIds()) != 1 || localResp.GetBrokenVolumeIds()[0] != volumeIDA {
+		t.Fatalf("ScrubVolume local mode expected broken volume %d, got %v", volumeIDA, localResp.GetBrokenVolumeIds())
+	}
+	if len(localResp.GetDetails()) == 0 || !strings.Contains(strings.Join(localResp.GetDetails(), " "), "not implemented") {
+		t.Fatalf("ScrubVolume local mode expected not-implemented details, got %v", localResp.GetDetails())
+	}
+
+	fullResp, err := grpcClient.ScrubVolume(ctx, &volume_server_pb.ScrubVolumeRequest{
+		VolumeIds: []uint32{volumeIDA},
+		Mode:      volume_server_pb.VolumeScrubMode_FULL,
+	})
+	if err != nil {
+		t.Fatalf("ScrubVolume full mode failed: %v", err)
+	}
+	if fullResp.GetTotalVolumes() != 1 {
+		t.Fatalf("ScrubVolume full mode expected total_volumes=1, got %d", fullResp.GetTotalVolumes())
+	}
+	if len(fullResp.GetDetails()) == 0 || !strings.Contains(strings.Join(fullResp.GetDetails(), " "), "not implemented") {
+		t.Fatalf("ScrubVolume full mode expected not-implemented details, got %v", fullResp.GetDetails())
+	}
+}
+
+func TestQueryJsonSuccessAndCsvNoOutput(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(64)
+	const needleID = uint64(777001)
+	const cookie = uint32(0xAABBCCDD)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	jsonLines := []byte("{\"score\":3}\n{\"score\":12}\n{\"score\":18}\n")
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, jsonLines)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != 201 {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	queryStream, err := grpcClient.Query(ctx, &volume_server_pb.QueryRequest{
+		FromFileIds: []string{fid},
+		Selections:  []string{"score"},
+		Filter: &volume_server_pb.QueryRequest_Filter{
+			Field:   "score",
+			Operand: ">",
+			Value:   "10",
+		},
+		InputSerialization: &volume_server_pb.QueryRequest_InputSerialization{
+			JsonInput: &volume_server_pb.QueryRequest_InputSerialization_JSONInput{Type: "LINES"},
+		},
+	})
+	if err != nil {
+		t.Fatalf("Query json start failed: %v", err)
+	}
+
+	firstStripe, err := queryStream.Recv()
+	if err != nil {
+		t.Fatalf("Query json recv failed: %v", err)
+	}
+	records := string(firstStripe.GetRecords())
+	if !strings.Contains(records, "score:12") || !strings.Contains(records, "score:18") {
+		t.Fatalf("Query json records missing expected filtered scores: %q", records)
+	}
+	if strings.Contains(records, "score:3") {
+		t.Fatalf("Query json records should not include filtered-out score: %q", records)
+	}
+	_, err = queryStream.Recv()
+	if err != io.EOF {
+		t.Fatalf("Query json expected EOF after first stripe, got: %v", err)
+	}
+
+	csvStream, err := grpcClient.Query(ctx, &volume_server_pb.QueryRequest{
+		FromFileIds: []string{fid},
+		Selections:  []string{"score"},
+		Filter:      &volume_server_pb.QueryRequest_Filter{},
+		InputSerialization: &volume_server_pb.QueryRequest_InputSerialization{
+			CsvInput: &volume_server_pb.QueryRequest_InputSerialization_CSVInput{},
+		},
+	})
+	if err != nil {
+		t.Fatalf("Query csv start failed: %v", err)
+	}
+	_, err = csvStream.Recv()
+	if err != io.EOF {
+		t.Fatalf("Query csv expected EOF with no rows, got: %v", err)
+	}
+}
+
+func TestQueryJsonNoMatchReturnsEmptyStripe(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(65)
+	const needleID = uint64(777002)
+	const cookie = uint32(0xABABCDCD)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	jsonLines := []byte("{\"score\":1}\n{\"score\":2}\n")
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, jsonLines)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != 201 {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	queryStream, err := grpcClient.Query(ctx, &volume_server_pb.QueryRequest{
+		FromFileIds: []string{fid},
+		Selections:  []string{"score"},
+		Filter: &volume_server_pb.QueryRequest_Filter{
+			Field:   "score",
+			Operand: ">",
+			Value:   "100",
+		},
+		InputSerialization: &volume_server_pb.QueryRequest_InputSerialization{
+			JsonInput: &volume_server_pb.QueryRequest_InputSerialization_JSONInput{Type: "LINES"},
+		},
+	})
+	if err != nil {
+		t.Fatalf("Query json no-match start failed: %v", err)
+	}
+
+	firstStripe, err := queryStream.Recv()
+	if err != nil {
+		t.Fatalf("Query json no-match recv failed: %v", err)
+	}
+	if len(firstStripe.GetRecords()) != 0 {
+		t.Fatalf("Query json no-match expected empty records stripe, got: %q", string(firstStripe.GetRecords()))
+	}
+
+	_, err = queryStream.Recv()
+	if err != io.EOF {
+		t.Fatalf("Query json no-match expected EOF after first empty stripe, got: %v", err)
+	}
+}
+
+func TestQueryCookieMismatchReturnsEOFNoResults(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(66)
+	const needleID = uint64(777003)
+	const cookie = uint32(0xCDCDABAB)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	jsonLines := []byte("{\"score\":7}\n{\"score\":8}\n")
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, jsonLines)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != 201 {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	wrongCookieFid := framework.NewFileID(volumeID, needleID, cookie+1)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stream, err := grpcClient.Query(ctx, &volume_server_pb.QueryRequest{
+		FromFileIds: []string{wrongCookieFid},
+		Selections:  []string{"score"},
+		Filter: &volume_server_pb.QueryRequest_Filter{
+			Field:   "score",
+			Operand: ">",
+			Value:   "0",
+		},
+		InputSerialization: &volume_server_pb.QueryRequest_InputSerialization{
+			JsonInput: &volume_server_pb.QueryRequest_InputSerialization_JSONInput{Type: "LINES"},
+		},
+	})
+	if err != nil {
+		t.Fatalf("Query start for cookie mismatch should not fail immediately, got: %v", err)
+	}
+
+	_, err = stream.Recv()
+	if err != io.EOF {
+		t.Fatalf("Query cookie mismatch expected EOF with no streamed records, got: %v", err)
+	}
+}

test/volume_server/grpc/tail_test.go

@@ -0,0 +1,206 @@
+package volume_server_grpc_test
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestVolumeTailSenderMissingVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stream, err := grpcClient.VolumeTailSender(ctx, &volume_server_pb.VolumeTailSenderRequest{VolumeId: 77777, SinceNs: 0, IdleTimeoutSeconds: 1})
+	if err == nil {
+		_, err = stream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "not found volume") {
+		t.Fatalf("VolumeTailSender missing-volume error mismatch: %v", err)
+	}
+}
+
+func TestVolumeTailSenderHeartbeatThenEOF(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(71)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stream, err := grpcClient.VolumeTailSender(ctx, &volume_server_pb.VolumeTailSenderRequest{
+		VolumeId:           volumeID,
+		SinceNs:            0,
+		IdleTimeoutSeconds: 1,
+	})
+	if err != nil {
+		t.Fatalf("VolumeTailSender start failed: %v", err)
+	}
+
+	msg, err := stream.Recv()
+	if err != nil {
+		t.Fatalf("VolumeTailSender first recv failed: %v", err)
+	}
+	if !msg.GetIsLastChunk() {
+		t.Fatalf("expected first tail message to be heartbeat IsLastChunk=true")
+	}
+
+	_, err = stream.Recv()
+	if err != io.EOF {
+		t.Fatalf("expected EOF after idle timeout drain, got: %v", err)
+	}
+}
+
+func TestVolumeTailReceiverMissingVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.VolumeTailReceiver(ctx, &volume_server_pb.VolumeTailReceiverRequest{VolumeId: 88888, SourceVolumeServer: clusterHarness.VolumeServerAddress(), SinceNs: 0, IdleTimeoutSeconds: 1})
+	if err == nil || !strings.Contains(err.Error(), "receiver not found volume") {
+		t.Fatalf("VolumeTailReceiver missing-volume error mismatch: %v", err)
+	}
+}
+
+func TestVolumeTailReceiverReplicatesSourceUpdates(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartDualVolumeCluster(t, matrix.P1())
+	sourceConn, sourceClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer sourceConn.Close()
+	destConn, destClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(1))
+	defer destConn.Close()
+
+	const volumeID = uint32(72)
+	framework.AllocateVolume(t, sourceClient, volumeID, "")
+	framework.AllocateVolume(t, destClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 880003, 0x3456789A)
+	payload := []byte("tail-receiver-replicates-source-updates")
+
+	sourceUploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(0), fid, payload)
+	_ = framework.ReadAllAndClose(t, sourceUploadResp)
+	if sourceUploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("source upload expected 201, got %d", sourceUploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	_, err := destClient.VolumeTailReceiver(ctx, &volume_server_pb.VolumeTailReceiverRequest{
+		VolumeId:           volumeID,
+		SourceVolumeServer: clusterHarness.VolumeAdminAddress(0) + "." + strings.Split(clusterHarness.VolumeGRPCAddress(0), ":")[1],
+		SinceNs:            0,
+		IdleTimeoutSeconds: 1,
+	})
+	if err != nil {
+		t.Fatalf("VolumeTailReceiver success path failed: %v", err)
+	}
+
+	destReadResp := framework.ReadBytes(t, httpClient, clusterHarness.VolumeAdminURL(1), fid)
+	destReadBody := framework.ReadAllAndClose(t, destReadResp)
+	if destReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("destination read after tail receive expected 200, got %d", destReadResp.StatusCode)
+	}
+	if string(destReadBody) != string(payload) {
+		t.Fatalf("destination tail-received payload mismatch: got %q want %q", string(destReadBody), string(payload))
+	}
+}
+
+func TestVolumeTailSenderLargeNeedleChunking(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(73)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	httpClient := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 880004, 0x456789AB)
+	largePayload := bytes.Repeat([]byte("L"), 2*1024*1024+128*1024)
+	uploadResp := framework.UploadBytes(t, httpClient, clusterHarness.VolumeAdminURL(), fid, largePayload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("large upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	stream, err := grpcClient.VolumeTailSender(ctx, &volume_server_pb.VolumeTailSenderRequest{
+		VolumeId:           volumeID,
+		SinceNs:            0,
+		IdleTimeoutSeconds: 1,
+	})
+	if err != nil {
+		t.Fatalf("VolumeTailSender start failed: %v", err)
+	}
+
+	dataChunkCount := 0
+	sawNonLastDataChunk := false
+	sawLastDataChunk := false
+	for {
+		msg, recvErr := stream.Recv()
+		if recvErr == io.EOF {
+			break
+		}
+		if recvErr != nil {
+			t.Fatalf("VolumeTailSender recv failed: %v", recvErr)
+		}
+		if len(msg.GetNeedleBody()) == 0 {
+			continue
+		}
+		dataChunkCount++
+		if msg.GetIsLastChunk() {
+			sawLastDataChunk = true
+		} else {
+			sawNonLastDataChunk = true
+		}
+	}
+
+	if dataChunkCount < 2 {
+		t.Fatalf("VolumeTailSender expected multiple chunks for large needle, got %d", dataChunkCount)
+	}
+	if !sawNonLastDataChunk {
+		t.Fatalf("VolumeTailSender expected at least one non-last data chunk")
+	}
+	if !sawLastDataChunk {
+		t.Fatalf("VolumeTailSender expected a final data chunk marked IsLastChunk=true")
+	}
+}

test/volume_server/grpc/tiering_remote_test.go

@@ -0,0 +1,236 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/remote_pb"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestFetchAndWriteNeedleMaintenanceAndMissingVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.FetchAndWriteNeedle(ctx, &volume_server_pb.FetchAndWriteNeedleRequest{
+		VolumeId: 98781,
+		NeedleId: 1,
+	})
+	if err == nil || !strings.Contains(err.Error(), "not found volume id") {
+		t.Fatalf("FetchAndWriteNeedle missing-volume error mismatch: %v", err)
+	}
+
+	stateResp, err := grpcClient.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = grpcClient.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{
+			Maintenance: true,
+			Version:     stateResp.GetState().GetVersion(),
+		},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	_, err = grpcClient.FetchAndWriteNeedle(ctx, &volume_server_pb.FetchAndWriteNeedleRequest{
+		VolumeId: 1,
+		NeedleId: 1,
+	})
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("FetchAndWriteNeedle maintenance error mismatch: %v", err)
+	}
+}
+
+func TestFetchAndWriteNeedleInvalidRemoteConfig(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(88)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	_, err := grpcClient.FetchAndWriteNeedle(ctx, &volume_server_pb.FetchAndWriteNeedleRequest{
+		VolumeId: volumeID,
+		NeedleId: 1,
+		Cookie:   1,
+		Size:     1,
+		RemoteConf: &remote_pb.RemoteConf{
+			Name: "it-invalid-remote",
+			Type: "does-not-exist",
+		},
+		RemoteLocation: &remote_pb.RemoteStorageLocation{
+			Name: "it-invalid-remote",
+			Path: "/test",
+		},
+	})
+	if err == nil || !strings.Contains(err.Error(), "get remote client") {
+		t.Fatalf("FetchAndWriteNeedle invalid-remote error mismatch: %v", err)
+	}
+}
+
+func TestVolumeTierMoveDatToRemoteErrorPaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(85)
+	const collection = "tier-collection"
+	framework.AllocateVolume(t, grpcClient, volumeID, collection)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	missingStream, err := grpcClient.VolumeTierMoveDatToRemote(ctx, &volume_server_pb.VolumeTierMoveDatToRemoteRequest{
+		VolumeId:               98782,
+		Collection:             collection,
+		DestinationBackendName: "dummy",
+	})
+	if err == nil {
+		_, err = missingStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "not found") {
+		t.Fatalf("VolumeTierMoveDatToRemote missing-volume error mismatch: %v", err)
+	}
+
+	mismatchStream, err := grpcClient.VolumeTierMoveDatToRemote(ctx, &volume_server_pb.VolumeTierMoveDatToRemoteRequest{
+		VolumeId:               volumeID,
+		Collection:             "wrong-collection",
+		DestinationBackendName: "dummy",
+	})
+	if err == nil {
+		_, err = mismatchStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "unexpected input") {
+		t.Fatalf("VolumeTierMoveDatToRemote collection mismatch error mismatch: %v", err)
+	}
+
+	stateResp, err := grpcClient.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = grpcClient.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{
+			Maintenance: true,
+			Version:     stateResp.GetState().GetVersion(),
+		},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	maintenanceStream, err := grpcClient.VolumeTierMoveDatToRemote(ctx, &volume_server_pb.VolumeTierMoveDatToRemoteRequest{
+		VolumeId:               volumeID,
+		Collection:             collection,
+		DestinationBackendName: "dummy",
+	})
+	if err == nil {
+		_, err = maintenanceStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "maintenance mode") {
+		t.Fatalf("VolumeTierMoveDatToRemote maintenance error mismatch: %v", err)
+	}
+}
+
+func TestVolumeTierMoveDatToRemoteMissingBackend(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(89)
+	const collection = "tier-missing-backend"
+	framework.AllocateVolume(t, grpcClient, volumeID, collection)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stream, err := grpcClient.VolumeTierMoveDatToRemote(ctx, &volume_server_pb.VolumeTierMoveDatToRemoteRequest{
+		VolumeId:               volumeID,
+		Collection:             collection,
+		DestinationBackendName: "definitely-missing-backend",
+	})
+	if err == nil {
+		_, err = stream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "destination definitely-missing-backend not found") {
+		t.Fatalf("VolumeTierMoveDatToRemote missing-backend error mismatch: %v", err)
+	}
+}
+
+func TestVolumeTierMoveDatFromRemoteErrorPaths(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(86)
+	const collection = "tier-download-collection"
+	framework.AllocateVolume(t, grpcClient, volumeID, collection)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	missingStream, err := grpcClient.VolumeTierMoveDatFromRemote(ctx, &volume_server_pb.VolumeTierMoveDatFromRemoteRequest{
+		VolumeId:   98783,
+		Collection: collection,
+	})
+	if err == nil {
+		_, err = missingStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "not found") {
+		t.Fatalf("VolumeTierMoveDatFromRemote missing-volume error mismatch: %v", err)
+	}
+
+	mismatchStream, err := grpcClient.VolumeTierMoveDatFromRemote(ctx, &volume_server_pb.VolumeTierMoveDatFromRemoteRequest{
+		VolumeId:   volumeID,
+		Collection: "wrong-collection",
+	})
+	if err == nil {
+		_, err = mismatchStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "unexpected input") {
+		t.Fatalf("VolumeTierMoveDatFromRemote collection mismatch error mismatch: %v", err)
+	}
+
+	localDiskStream, err := grpcClient.VolumeTierMoveDatFromRemote(ctx, &volume_server_pb.VolumeTierMoveDatFromRemoteRequest{
+		VolumeId:   volumeID,
+		Collection: collection,
+	})
+	if err == nil {
+		_, err = localDiskStream.Recv()
+	}
+	if err == nil || !strings.Contains(err.Error(), "already on local disk") {
+		t.Fatalf("VolumeTierMoveDatFromRemote local-disk error mismatch: %v", err)
+	}
+}

test/volume_server/grpc/vacuum_test.go

@@ -0,0 +1,87 @@
+package volume_server_grpc_test
+
+import (
+	"context"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+)
+
+func TestVacuumVolumeCheckSuccessAndMissingVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(31)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	resp, err := grpcClient.VacuumVolumeCheck(ctx, &volume_server_pb.VacuumVolumeCheckRequest{VolumeId: volumeID})
+	if err != nil {
+		t.Fatalf("VacuumVolumeCheck existing volume failed: %v", err)
+	}
+	if resp.GetGarbageRatio() < 0 || resp.GetGarbageRatio() > 1 {
+		t.Fatalf("unexpected garbage ratio: %f", resp.GetGarbageRatio())
+	}
+
+	_, err = grpcClient.VacuumVolumeCheck(ctx, &volume_server_pb.VacuumVolumeCheckRequest{VolumeId: 99999})
+	if err == nil {
+		t.Fatalf("VacuumVolumeCheck should fail for missing volume")
+	}
+}
+
+func TestVacuumMaintenanceModeRejections(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	stateResp, err := grpcClient.GetState(ctx, &volume_server_pb.GetStateRequest{})
+	if err != nil {
+		t.Fatalf("GetState failed: %v", err)
+	}
+	_, err = grpcClient.SetState(ctx, &volume_server_pb.SetStateRequest{
+		State: &volume_server_pb.VolumeServerState{Maintenance: true, Version: stateResp.GetState().GetVersion()},
+	})
+	if err != nil {
+		t.Fatalf("SetState maintenance=true failed: %v", err)
+	}
+
+	assertMaintenanceErr := func(name string, err error) {
+		t.Helper()
+		if err == nil {
+			t.Fatalf("%s should fail in maintenance mode", name)
+		}
+		if !strings.Contains(err.Error(), "maintenance mode") {
+			t.Fatalf("%s expected maintenance mode error, got: %v", name, err)
+		}
+	}
+
+	compactStream, err := grpcClient.VacuumVolumeCompact(ctx, &volume_server_pb.VacuumVolumeCompactRequest{VolumeId: 31})
+	if err == nil {
+		_, err = compactStream.Recv()
+	}
+	assertMaintenanceErr("VacuumVolumeCompact", err)
+
+	_, err = grpcClient.VacuumVolumeCommit(ctx, &volume_server_pb.VacuumVolumeCommitRequest{VolumeId: 31})
+	assertMaintenanceErr("VacuumVolumeCommit", err)
+
+	_, err = grpcClient.VacuumVolumeCleanup(ctx, &volume_server_pb.VacuumVolumeCleanupRequest{VolumeId: 31})
+	assertMaintenanceErr("VacuumVolumeCleanup", err)
+}

test/volume_server/http/admin_test.go

@@ -0,0 +1,174 @@
+package volume_server_http_test
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/util/request_id"
+)
+
+func TestAdminStatusAndHealthz(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	client := framework.NewHTTPClient()
+
+	statusReq, err := http.NewRequest(http.MethodGet, cluster.VolumeAdminURL()+"/status", nil)
+	if err != nil {
+		t.Fatalf("create status request: %v", err)
+	}
+	statusReq.Header.Set(request_id.AmzRequestIDHeader, "test-request-id-1")
+
+	statusResp := framework.DoRequest(t, client, statusReq)
+	statusBody := framework.ReadAllAndClose(t, statusResp)
+
+	if statusResp.StatusCode != http.StatusOK {
+		t.Fatalf("expected /status code 200, got %d, body: %s", statusResp.StatusCode, string(statusBody))
+	}
+	if got := statusResp.Header.Get("Server"); !strings.Contains(got, "SeaweedFS Volume") {
+		t.Fatalf("expected /status Server header to contain SeaweedFS Volume, got %q", got)
+	}
+	if got := statusResp.Header.Get(request_id.AmzRequestIDHeader); got != "test-request-id-1" {
+		t.Fatalf("expected echoed request id, got %q", got)
+	}
+
+	var payload map[string]interface{}
+	if err := json.Unmarshal(statusBody, &payload); err != nil {
+		t.Fatalf("decode status response: %v", err)
+	}
+	for _, field := range []string{"Version", "DiskStatuses", "Volumes"} {
+		if _, found := payload[field]; !found {
+			t.Fatalf("status payload missing field %q", field)
+		}
+	}
+
+	healthReq := mustNewRequest(t, http.MethodGet, cluster.VolumeAdminURL()+"/healthz")
+	healthReq.Header.Set(request_id.AmzRequestIDHeader, "test-request-id-2")
+	healthResp := framework.DoRequest(t, client, healthReq)
+	_ = framework.ReadAllAndClose(t, healthResp)
+	if healthResp.StatusCode != http.StatusOK {
+		t.Fatalf("expected /healthz code 200, got %d", healthResp.StatusCode)
+	}
+	if got := healthResp.Header.Get("Server"); !strings.Contains(got, "SeaweedFS Volume") {
+		t.Fatalf("expected /healthz Server header to contain SeaweedFS Volume, got %q", got)
+	}
+	if got := healthResp.Header.Get(request_id.AmzRequestIDHeader); got != "test-request-id-2" {
+		t.Fatalf("expected /healthz echoed request id, got %q", got)
+	}
+
+	uiResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, cluster.VolumeAdminURL()+"/ui/index.html"))
+	uiBody := framework.ReadAllAndClose(t, uiResp)
+	if uiResp.StatusCode != http.StatusOK {
+		t.Fatalf("expected /ui/index.html code 200, got %d, body: %s", uiResp.StatusCode, string(uiBody))
+	}
+	if !strings.Contains(strings.ToLower(string(uiBody)), "volume") {
+		t.Fatalf("ui page does not look like volume status page")
+	}
+}
+
+func TestOptionsMethodsByPort(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P2())
+	client := framework.NewHTTPClient()
+
+	adminResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodOptions, cluster.VolumeAdminURL()+"/"))
+	_ = framework.ReadAllAndClose(t, adminResp)
+	if adminResp.StatusCode != http.StatusOK {
+		t.Fatalf("admin OPTIONS expected 200, got %d", adminResp.StatusCode)
+	}
+	adminAllowed := adminResp.Header.Get("Access-Control-Allow-Methods")
+	for _, expected := range []string{"PUT", "POST", "GET", "DELETE", "OPTIONS"} {
+		if !strings.Contains(adminAllowed, expected) {
+			t.Fatalf("admin allow methods missing %q, got %q", expected, adminAllowed)
+		}
+	}
+	if adminResp.Header.Get("Access-Control-Allow-Headers") != "*" {
+		t.Fatalf("admin allow headers expected '*', got %q", adminResp.Header.Get("Access-Control-Allow-Headers"))
+	}
+
+	publicResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodOptions, cluster.VolumePublicURL()+"/"))
+	_ = framework.ReadAllAndClose(t, publicResp)
+	if publicResp.StatusCode != http.StatusOK {
+		t.Fatalf("public OPTIONS expected 200, got %d", publicResp.StatusCode)
+	}
+	publicAllowed := publicResp.Header.Get("Access-Control-Allow-Methods")
+	if !strings.Contains(publicAllowed, "GET") || !strings.Contains(publicAllowed, "OPTIONS") {
+		t.Fatalf("public allow methods expected GET and OPTIONS, got %q", publicAllowed)
+	}
+	if strings.Contains(publicAllowed, "POST") {
+		t.Fatalf("public allow methods should not include POST, got %q", publicAllowed)
+	}
+	if publicResp.Header.Get("Access-Control-Allow-Headers") != "*" {
+		t.Fatalf("public allow headers expected '*', got %q", publicResp.Header.Get("Access-Control-Allow-Headers"))
+	}
+}
+
+func TestOptionsWithOriginIncludesCorsHeaders(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P2())
+	client := framework.NewHTTPClient()
+
+	adminReq := mustNewRequest(t, http.MethodOptions, cluster.VolumeAdminURL()+"/")
+	adminReq.Header.Set("Origin", "https://example.com")
+	adminResp := framework.DoRequest(t, client, adminReq)
+	_ = framework.ReadAllAndClose(t, adminResp)
+	if adminResp.StatusCode != http.StatusOK {
+		t.Fatalf("admin OPTIONS expected 200, got %d", adminResp.StatusCode)
+	}
+	if adminResp.Header.Get("Access-Control-Allow-Origin") != "*" {
+		t.Fatalf("admin OPTIONS expected Access-Control-Allow-Origin=*, got %q", adminResp.Header.Get("Access-Control-Allow-Origin"))
+	}
+	if adminResp.Header.Get("Access-Control-Allow-Credentials") != "true" {
+		t.Fatalf("admin OPTIONS expected Access-Control-Allow-Credentials=true, got %q", adminResp.Header.Get("Access-Control-Allow-Credentials"))
+	}
+
+	publicReq := mustNewRequest(t, http.MethodOptions, cluster.VolumePublicURL()+"/")
+	publicReq.Header.Set("Origin", "https://example.com")
+	publicResp := framework.DoRequest(t, client, publicReq)
+	_ = framework.ReadAllAndClose(t, publicResp)
+	if publicResp.StatusCode != http.StatusOK {
+		t.Fatalf("public OPTIONS expected 200, got %d", publicResp.StatusCode)
+	}
+	if publicResp.Header.Get("Access-Control-Allow-Origin") != "*" {
+		t.Fatalf("public OPTIONS expected Access-Control-Allow-Origin=*, got %q", publicResp.Header.Get("Access-Control-Allow-Origin"))
+	}
+	if publicResp.Header.Get("Access-Control-Allow-Credentials") != "true" {
+		t.Fatalf("public OPTIONS expected Access-Control-Allow-Credentials=true, got %q", publicResp.Header.Get("Access-Control-Allow-Credentials"))
+	}
+}
+
+func TestUiIndexNotExposedWhenJwtSigningEnabled(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P3())
+	client := framework.NewHTTPClient()
+
+	resp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, cluster.VolumeAdminURL()+"/ui/index.html"))
+	body := framework.ReadAllAndClose(t, resp)
+	if resp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("expected /ui/index.html to be gated by auth under JWT profile (401), got %d body=%s", resp.StatusCode, string(body))
+	}
+}
+
+func mustNewRequest(t testing.TB, method, url string) *http.Request {
+	t.Helper()
+	req, err := http.NewRequest(method, url, nil)
+	if err != nil {
+		t.Fatalf("create request %s %s: %v", method, url, err)
+	}
+	return req
+}

test/volume_server/http/auth_test.go

@@ -0,0 +1,419 @@
+package volume_server_http_test
+
+import (
+	"bytes"
+	"net/http"
+	"testing"
+	"time"
+
+	jwt "github.com/golang-jwt/jwt/v5"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/security"
+)
+
+func TestJWTAuthForWriteAndRead(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P3()
+	clusterHarness := framework.StartSingleVolumeCluster(t, profile)
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(51)
+	const needleID = uint64(123456)
+	const cookie = uint32(0xABCDEF12)
+
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	payload := []byte("jwt-protected-content")
+	client := framework.NewHTTPClient()
+
+	unauthWrite := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	unauthWriteResp := framework.DoRequest(t, client, unauthWrite)
+	_ = framework.ReadAllAndClose(t, unauthWriteResp)
+	if unauthWriteResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("unauthorized write expected 401, got %d", unauthWriteResp.StatusCode)
+	}
+
+	invalidWrite := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	invalidWrite.Header.Set("Authorization", "Bearer invalid")
+	invalidWriteResp := framework.DoRequest(t, client, invalidWrite)
+	_ = framework.ReadAllAndClose(t, invalidWriteResp)
+	if invalidWriteResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("invalid write token expected 401, got %d", invalidWriteResp.StatusCode)
+	}
+
+	writeToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, fid)
+	authWrite := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	authWrite.Header.Set("Authorization", "Bearer "+string(writeToken))
+	authWriteResp := framework.DoRequest(t, client, authWrite)
+	_ = framework.ReadAllAndClose(t, authWriteResp)
+	if authWriteResp.StatusCode != http.StatusCreated {
+		t.Fatalf("authorized write expected 201, got %d", authWriteResp.StatusCode)
+	}
+
+	unauthReadReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	unauthReadResp := framework.DoRequest(t, client, unauthReadReq)
+	_ = framework.ReadAllAndClose(t, unauthReadResp)
+	if unauthReadResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("unauthorized read expected 401, got %d", unauthReadResp.StatusCode)
+	}
+
+	readToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, fid)
+	authReadReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	authReadReq.Header.Set("Authorization", "Bearer "+string(readToken))
+	authReadResp := framework.DoRequest(t, client, authReadReq)
+	authReadBody := framework.ReadAllAndClose(t, authReadResp)
+	if authReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("authorized read expected 200, got %d", authReadResp.StatusCode)
+	}
+	if string(authReadBody) != string(payload) {
+		t.Fatalf("authorized read content mismatch: got %q want %q", string(authReadBody), string(payload))
+	}
+}
+
+func TestJWTAuthRejectsFidMismatch(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P3()
+	clusterHarness := framework.StartSingleVolumeCluster(t, profile)
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(52)
+	const needleID = uint64(223344)
+	const cookie = uint32(0x10203040)
+	const otherNeedleID = uint64(223345)
+	const otherCookie = uint32(0x50607080)
+	const wrongCookie = uint32(0x10203041)
+
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	otherFid := framework.NewFileID(volumeID, otherNeedleID, otherCookie)
+	payload := []byte("jwt-fid-mismatch-content")
+	client := framework.NewHTTPClient()
+
+	writeTokenForOtherFid := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, otherFid)
+	mismatchedWrite := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	mismatchedWrite.Header.Set("Authorization", "Bearer "+string(writeTokenForOtherFid))
+	mismatchedWriteResp := framework.DoRequest(t, client, mismatchedWrite)
+	_ = framework.ReadAllAndClose(t, mismatchedWriteResp)
+	if mismatchedWriteResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("write with mismatched fid token expected 401, got %d", mismatchedWriteResp.StatusCode)
+	}
+
+	wrongCookieFid := framework.NewFileID(volumeID, needleID, wrongCookie)
+	writeTokenWrongCookie := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, wrongCookieFid)
+	wrongCookieWrite := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	wrongCookieWrite.Header.Set("Authorization", "Bearer "+string(writeTokenWrongCookie))
+	wrongCookieWriteResp := framework.DoRequest(t, client, wrongCookieWrite)
+	_ = framework.ReadAllAndClose(t, wrongCookieWriteResp)
+	if wrongCookieWriteResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("write with wrong-cookie fid token expected 401, got %d", wrongCookieWriteResp.StatusCode)
+	}
+
+	writeTokenForFid := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, fid)
+	validWrite := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	validWrite.Header.Set("Authorization", "Bearer "+string(writeTokenForFid))
+	validWriteResp := framework.DoRequest(t, client, validWrite)
+	_ = framework.ReadAllAndClose(t, validWriteResp)
+	if validWriteResp.StatusCode != http.StatusCreated {
+		t.Fatalf("authorized write expected 201, got %d", validWriteResp.StatusCode)
+	}
+
+	readTokenForOtherFid := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, otherFid)
+	mismatchedReadReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	mismatchedReadReq.Header.Set("Authorization", "Bearer "+string(readTokenForOtherFid))
+	mismatchedReadResp := framework.DoRequest(t, client, mismatchedReadReq)
+	_ = framework.ReadAllAndClose(t, mismatchedReadResp)
+	if mismatchedReadResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("read with mismatched fid token expected 401, got %d", mismatchedReadResp.StatusCode)
+	}
+
+	readTokenWrongCookie := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, wrongCookieFid)
+	wrongCookieReadReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	wrongCookieReadReq.Header.Set("Authorization", "Bearer "+string(readTokenWrongCookie))
+	wrongCookieReadResp := framework.DoRequest(t, client, wrongCookieReadReq)
+	_ = framework.ReadAllAndClose(t, wrongCookieReadResp)
+	if wrongCookieReadResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("read with wrong-cookie fid token expected 401, got %d", wrongCookieReadResp.StatusCode)
+	}
+}
+
+func newUploadRequest(t testing.TB, url string, payload []byte) *http.Request {
+	t.Helper()
+	req, err := http.NewRequest(http.MethodPost, url, bytes.NewReader(payload))
+	if err != nil {
+		t.Fatalf("create upload request %s: %v", url, err)
+	}
+	req.Header.Set("Content-Type", "application/octet-stream")
+	return req
+}
+
+func TestJWTAuthRejectsExpiredTokens(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P3()
+	clusterHarness := framework.StartSingleVolumeCluster(t, profile)
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(53)
+	const needleID = uint64(334455)
+	const cookie = uint32(0x22334455)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	payload := []byte("expired-token-content")
+	client := framework.NewHTTPClient()
+
+	expiredWriteToken := mustGenExpiredToken(t, []byte(profile.JWTSigningKey), fid)
+	writeReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	writeReq.Header.Set("Authorization", "Bearer "+expiredWriteToken)
+	writeResp := framework.DoRequest(t, client, writeReq)
+	_ = framework.ReadAllAndClose(t, writeResp)
+	if writeResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("expired write token expected 401, got %d", writeResp.StatusCode)
+	}
+
+	// Seed data with a valid token so read auth path can be exercised against existing content.
+	validWriteToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, fid)
+	validWriteReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	validWriteReq.Header.Set("Authorization", "Bearer "+string(validWriteToken))
+	validWriteResp := framework.DoRequest(t, client, validWriteReq)
+	_ = framework.ReadAllAndClose(t, validWriteResp)
+	if validWriteResp.StatusCode != http.StatusCreated {
+		t.Fatalf("valid write expected 201, got %d", validWriteResp.StatusCode)
+	}
+
+	expiredReadToken := mustGenExpiredToken(t, []byte(profile.JWTReadKey), fid)
+	readReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	readReq.Header.Set("Authorization", "Bearer "+expiredReadToken)
+	readResp := framework.DoRequest(t, client, readReq)
+	_ = framework.ReadAllAndClose(t, readResp)
+	if readResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("expired read token expected 401, got %d", readResp.StatusCode)
+	}
+}
+
+func TestJWTAuthViaQueryParamAndCookie(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P3()
+	clusterHarness := framework.StartSingleVolumeCluster(t, profile)
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(54)
+	const needleID = uint64(445566)
+	const cookie = uint32(0x31415926)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	payload := []byte("jwt-query-cookie-content")
+	client := framework.NewHTTPClient()
+
+	writeToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, fid)
+	writeReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid+"?jwt="+string(writeToken), payload)
+	writeResp := framework.DoRequest(t, client, writeReq)
+	_ = framework.ReadAllAndClose(t, writeResp)
+	if writeResp.StatusCode != http.StatusCreated {
+		t.Fatalf("query-jwt write expected 201, got %d", writeResp.StatusCode)
+	}
+
+	readToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, fid)
+	readReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	readReq.AddCookie(&http.Cookie{Name: "AT", Value: string(readToken)})
+	readResp := framework.DoRequest(t, client, readReq)
+	readBody := framework.ReadAllAndClose(t, readResp)
+	if readResp.StatusCode != http.StatusOK {
+		t.Fatalf("cookie-jwt read expected 200, got %d", readResp.StatusCode)
+	}
+	if string(readBody) != string(payload) {
+		t.Fatalf("cookie-jwt read body mismatch: got %q want %q", string(readBody), string(payload))
+	}
+}
+
+func TestJWTTokenSourcePrecedenceQueryOverHeader(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P3()
+	clusterHarness := framework.StartSingleVolumeCluster(t, profile)
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(55)
+	const needleID = uint64(556677)
+	const cookie = uint32(0x99887766)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	otherFID := framework.NewFileID(volumeID, needleID+1, cookie+1)
+	payload := []byte("jwt-precedence-content")
+	client := framework.NewHTTPClient()
+
+	validWriteToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, fid)
+	invalidWriteQueryToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, otherFID)
+	writeReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid+"?jwt="+string(invalidWriteQueryToken), payload)
+	writeReq.Header.Set("Authorization", "Bearer "+string(validWriteToken))
+	writeResp := framework.DoRequest(t, client, writeReq)
+	_ = framework.ReadAllAndClose(t, writeResp)
+	if writeResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("query token should take precedence over header token for write, expected 401 got %d", writeResp.StatusCode)
+	}
+
+	// Seed data with valid write token, then exercise read precedence.
+	seedWriteReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	seedWriteReq.Header.Set("Authorization", "Bearer "+string(validWriteToken))
+	seedWriteResp := framework.DoRequest(t, client, seedWriteReq)
+	_ = framework.ReadAllAndClose(t, seedWriteResp)
+	if seedWriteResp.StatusCode != http.StatusCreated {
+		t.Fatalf("seed write expected 201, got %d", seedWriteResp.StatusCode)
+	}
+
+	validReadToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, fid)
+	invalidReadQueryToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, otherFID)
+	readReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid+"?jwt="+string(invalidReadQueryToken))
+	readReq.Header.Set("Authorization", "Bearer "+string(validReadToken))
+	readResp := framework.DoRequest(t, client, readReq)
+	_ = framework.ReadAllAndClose(t, readResp)
+	if readResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("query token should take precedence over header token for read, expected 401 got %d", readResp.StatusCode)
+	}
+}
+
+func TestJWTTokenSourcePrecedenceHeaderOverCookie(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P3()
+	clusterHarness := framework.StartSingleVolumeCluster(t, profile)
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(56)
+	const needleID = uint64(667788)
+	const cookie = uint32(0x11229988)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	otherFID := framework.NewFileID(volumeID, needleID+1, cookie+1)
+	payload := []byte("jwt-precedence-header-cookie")
+	client := framework.NewHTTPClient()
+
+	validWriteToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, fid)
+	invalidCookieWriteToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, otherFID)
+	writeReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	writeReq.Header.Set("Authorization", "Bearer "+string(validWriteToken))
+	writeReq.AddCookie(&http.Cookie{Name: "AT", Value: string(invalidCookieWriteToken)})
+	writeResp := framework.DoRequest(t, client, writeReq)
+	_ = framework.ReadAllAndClose(t, writeResp)
+	if writeResp.StatusCode != http.StatusCreated {
+		t.Fatalf("header token should take precedence over cookie token for write, expected 201 got %d", writeResp.StatusCode)
+	}
+
+	validReadToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, fid)
+	invalidCookieReadToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, otherFID)
+	readReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	readReq.Header.Set("Authorization", "Bearer "+string(validReadToken))
+	readReq.AddCookie(&http.Cookie{Name: "AT", Value: string(invalidCookieReadToken)})
+	readResp := framework.DoRequest(t, client, readReq)
+	readBody := framework.ReadAllAndClose(t, readResp)
+	if readResp.StatusCode != http.StatusOK {
+		t.Fatalf("header token should take precedence over cookie token for read, expected 200 got %d", readResp.StatusCode)
+	}
+	if string(readBody) != string(payload) {
+		t.Fatalf("header-over-cookie read body mismatch: got %q want %q", string(readBody), string(payload))
+	}
+}
+
+func TestJWTTokenSourcePrecedenceQueryOverCookie(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P3()
+	clusterHarness := framework.StartSingleVolumeCluster(t, profile)
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(57)
+	const needleID = uint64(778899)
+	const cookie = uint32(0x88776655)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	otherFID := framework.NewFileID(volumeID, needleID+1, cookie+1)
+	payload := []byte("jwt-precedence-query-cookie")
+	client := framework.NewHTTPClient()
+
+	validWriteToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, fid)
+	invalidQueryWriteToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTSigningKey)), 60, otherFID)
+	writeReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid+"?jwt="+string(invalidQueryWriteToken), payload)
+	writeReq.AddCookie(&http.Cookie{Name: "AT", Value: string(validWriteToken)})
+	writeResp := framework.DoRequest(t, client, writeReq)
+	_ = framework.ReadAllAndClose(t, writeResp)
+	if writeResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("query token should take precedence over cookie token for write, expected 401 got %d", writeResp.StatusCode)
+	}
+
+	// Seed data with valid write token so read precedence can be exercised.
+	seedWriteReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	seedWriteReq.Header.Set("Authorization", "Bearer "+string(validWriteToken))
+	seedWriteResp := framework.DoRequest(t, client, seedWriteReq)
+	_ = framework.ReadAllAndClose(t, seedWriteResp)
+	if seedWriteResp.StatusCode != http.StatusCreated {
+		t.Fatalf("seed write expected 201, got %d", seedWriteResp.StatusCode)
+	}
+
+	validReadToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, fid)
+	invalidQueryReadToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, otherFID)
+	readReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid+"?jwt="+string(invalidQueryReadToken))
+	readReq.AddCookie(&http.Cookie{Name: "AT", Value: string(validReadToken)})
+	readResp := framework.DoRequest(t, client, readReq)
+	_ = framework.ReadAllAndClose(t, readResp)
+	if readResp.StatusCode != http.StatusUnauthorized {
+		t.Fatalf("query token should take precedence over cookie token for read, expected 401 got %d", readResp.StatusCode)
+	}
+
+	// Validate positive path: valid query token should succeed even if cookie token is invalid.
+	validQueryReadReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid+"?jwt="+string(validReadToken))
+	invalidCookieReadToken := security.GenJwtForVolumeServer(security.SigningKey([]byte(profile.JWTReadKey)), 60, otherFID)
+	validQueryReadReq.AddCookie(&http.Cookie{Name: "AT", Value: string(invalidCookieReadToken)})
+	validQueryReadResp := framework.DoRequest(t, client, validQueryReadReq)
+	validQueryReadBody := framework.ReadAllAndClose(t, validQueryReadResp)
+	if validQueryReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("valid query token should succeed over invalid cookie token, expected 200 got %d", validQueryReadResp.StatusCode)
+	}
+	if string(validQueryReadBody) != string(payload) {
+		t.Fatalf("query-over-cookie read body mismatch: got %q want %q", string(validQueryReadBody), string(payload))
+	}
+}
+
+func mustGenExpiredToken(t testing.TB, key []byte, fid string) string {
+	t.Helper()
+	claims := security.SeaweedFileIdClaims{
+		Fid: fid,
+		RegisteredClaims: jwt.RegisteredClaims{
+			ExpiresAt: jwt.NewNumericDate(time.Now().Add(-1 * time.Minute)),
+		},
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	signed, err := token.SignedString(key)
+	if err != nil {
+		t.Fatalf("sign expired token: %v", err)
+	}
+	return signed
+}

test/volume_server/http/chunk_manifest_test.go

@@ -0,0 +1,232 @@
+package volume_server_http_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/operation"
+)
+
+func TestChunkManifestExpansionAndBypass(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(102)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+
+	chunkFID := framework.NewFileID(volumeID, 772005, 0x5E6F7081)
+	chunkPayload := []byte("chunk-manifest-expanded-content")
+	chunkUploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), chunkFID, chunkPayload)
+	_ = framework.ReadAllAndClose(t, chunkUploadResp)
+	if chunkUploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("chunk upload expected 201, got %d", chunkUploadResp.StatusCode)
+	}
+
+	manifest := &operation.ChunkManifest{
+		Name: "manifest.bin",
+		Mime: "application/octet-stream",
+		Size: int64(len(chunkPayload)),
+		Chunks: []*operation.ChunkInfo{
+			{
+				Fid:    chunkFID,
+				Offset: 0,
+				Size:   int64(len(chunkPayload)),
+			},
+		},
+	}
+	manifestBytes, err := json.Marshal(manifest)
+	if err != nil {
+		t.Fatalf("marshal chunk manifest: %v", err)
+	}
+
+	manifestFID := framework.NewFileID(volumeID, 772006, 0x6F708192)
+	manifestUploadReq, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+manifestFID+"?cm=true", bytes.NewReader(manifestBytes))
+	if err != nil {
+		t.Fatalf("create manifest upload request: %v", err)
+	}
+	manifestUploadReq.Header.Set("Content-Type", "application/json")
+	manifestUploadResp := framework.DoRequest(t, client, manifestUploadReq)
+	_ = framework.ReadAllAndClose(t, manifestUploadResp)
+	if manifestUploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("manifest upload expected 201, got %d", manifestUploadResp.StatusCode)
+	}
+
+	expandedReadResp := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), manifestFID)
+	expandedReadBody := framework.ReadAllAndClose(t, expandedReadResp)
+	if expandedReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("manifest expanded read expected 200, got %d", expandedReadResp.StatusCode)
+	}
+	if string(expandedReadBody) != string(chunkPayload) {
+		t.Fatalf("manifest expanded read mismatch: got %q want %q", string(expandedReadBody), string(chunkPayload))
+	}
+	if expandedReadResp.Header.Get("X-File-Store") != "chunked" {
+		t.Fatalf("manifest expanded read expected X-File-Store=chunked, got %q", expandedReadResp.Header.Get("X-File-Store"))
+	}
+
+	bypassReadResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+manifestFID+"?cm=false"))
+	bypassReadBody := framework.ReadAllAndClose(t, bypassReadResp)
+	if bypassReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("manifest bypass read expected 200, got %d", bypassReadResp.StatusCode)
+	}
+	if bypassReadResp.Header.Get("X-File-Store") != "" {
+		t.Fatalf("manifest bypass read expected empty X-File-Store header, got %q", bypassReadResp.Header.Get("X-File-Store"))
+	}
+
+	var gotManifest operation.ChunkManifest
+	if err = json.Unmarshal(bypassReadBody, &gotManifest); err != nil {
+		t.Fatalf("manifest bypass read expected JSON payload, got decode error: %v body=%q", err, string(bypassReadBody))
+	}
+	if len(gotManifest.Chunks) != 1 || gotManifest.Chunks[0].Fid != chunkFID {
+		t.Fatalf("manifest bypass read payload mismatch: %+v", gotManifest)
+	}
+}
+
+func TestChunkManifestDeleteRemovesChildChunks(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(104)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+
+	chunkFID := framework.NewFileID(volumeID, 772008, 0x8192A3B4)
+	chunkPayload := []byte("chunk-manifest-delete-content")
+	chunkUploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), chunkFID, chunkPayload)
+	_ = framework.ReadAllAndClose(t, chunkUploadResp)
+	if chunkUploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("chunk upload expected 201, got %d", chunkUploadResp.StatusCode)
+	}
+
+	manifest := &operation.ChunkManifest{
+		Name: "manifest-delete.bin",
+		Mime: "application/octet-stream",
+		Size: int64(len(chunkPayload)),
+		Chunks: []*operation.ChunkInfo{
+			{
+				Fid:    chunkFID,
+				Offset: 0,
+				Size:   int64(len(chunkPayload)),
+			},
+		},
+	}
+	manifestBytes, err := json.Marshal(manifest)
+	if err != nil {
+		t.Fatalf("marshal chunk manifest: %v", err)
+	}
+
+	manifestFID := framework.NewFileID(volumeID, 772009, 0x92A3B4C5)
+	manifestUploadReq, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+manifestFID+"?cm=true", bytes.NewReader(manifestBytes))
+	if err != nil {
+		t.Fatalf("create manifest upload request: %v", err)
+	}
+	manifestUploadReq.Header.Set("Content-Type", "application/json")
+	manifestUploadResp := framework.DoRequest(t, client, manifestUploadReq)
+	_ = framework.ReadAllAndClose(t, manifestUploadResp)
+	if manifestUploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("manifest upload expected 201, got %d", manifestUploadResp.StatusCode)
+	}
+
+	deleteResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodDelete, clusterHarness.VolumeAdminURL()+"/"+manifestFID))
+	deleteBody := framework.ReadAllAndClose(t, deleteResp)
+	if deleteResp.StatusCode != http.StatusAccepted {
+		t.Fatalf("manifest delete expected 202, got %d", deleteResp.StatusCode)
+	}
+	var deleteResult map[string]int64
+	if err = json.Unmarshal(deleteBody, &deleteResult); err != nil {
+		t.Fatalf("decode manifest delete response: %v body=%q", err, string(deleteBody))
+	}
+	if deleteResult["size"] != int64(len(chunkPayload)) {
+		t.Fatalf("manifest delete expected size=%d, got %d", len(chunkPayload), deleteResult["size"])
+	}
+
+	manifestReadAfterDelete := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), manifestFID)
+	_ = framework.ReadAllAndClose(t, manifestReadAfterDelete)
+	if manifestReadAfterDelete.StatusCode != http.StatusNotFound {
+		t.Fatalf("manifest read after delete expected 404, got %d", manifestReadAfterDelete.StatusCode)
+	}
+
+	chunkReadAfterDelete := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), chunkFID)
+	_ = framework.ReadAllAndClose(t, chunkReadAfterDelete)
+	if chunkReadAfterDelete.StatusCode != http.StatusNotFound {
+		t.Fatalf("chunk read after manifest delete expected 404, got %d", chunkReadAfterDelete.StatusCode)
+	}
+}
+
+func TestChunkManifestDeleteFailsWhenChildDeletionFails(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(105)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	manifest := &operation.ChunkManifest{
+		Name: "manifest-delete-failure.bin",
+		Mime: "application/octet-stream",
+		Size: 1,
+		Chunks: []*operation.ChunkInfo{
+			{
+				Fid:    "not-a-valid-fid",
+				Offset: 0,
+				Size:   1,
+			},
+		},
+	}
+	manifestBytes, err := json.Marshal(manifest)
+	if err != nil {
+		t.Fatalf("marshal chunk manifest: %v", err)
+	}
+
+	manifestFID := framework.NewFileID(volumeID, 772010, 0xA3B4C5D6)
+	manifestUploadReq, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+manifestFID+"?cm=true", bytes.NewReader(manifestBytes))
+	if err != nil {
+		t.Fatalf("create manifest upload request: %v", err)
+	}
+	manifestUploadReq.Header.Set("Content-Type", "application/json")
+	manifestUploadResp := framework.DoRequest(t, client, manifestUploadReq)
+	_ = framework.ReadAllAndClose(t, manifestUploadResp)
+	if manifestUploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("manifest upload expected 201, got %d", manifestUploadResp.StatusCode)
+	}
+
+	deleteResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodDelete, clusterHarness.VolumeAdminURL()+"/"+manifestFID))
+	deleteBody := framework.ReadAllAndClose(t, deleteResp)
+	if deleteResp.StatusCode != http.StatusInternalServerError {
+		t.Fatalf("manifest delete with invalid child fid expected 500, got %d body=%q", deleteResp.StatusCode, string(deleteBody))
+	}
+
+	manifestBypassRead := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+manifestFID+"?cm=false"))
+	manifestBypassBody := framework.ReadAllAndClose(t, manifestBypassRead)
+	if manifestBypassRead.StatusCode != http.StatusOK {
+		t.Fatalf("manifest bypass read after failed delete expected 200, got %d", manifestBypassRead.StatusCode)
+	}
+	var gotManifest operation.ChunkManifest
+	if err = json.Unmarshal(manifestBypassBody, &gotManifest); err != nil {
+		t.Fatalf("manifest bypass read expected JSON payload, got decode error: %v body=%q", err, string(manifestBypassBody))
+	}
+	if len(gotManifest.Chunks) != 1 || gotManifest.Chunks[0].Fid != "not-a-valid-fid" {
+		t.Fatalf("manifest payload mismatch after failed delete: %+v", gotManifest)
+	}
+}

test/volume_server/http/compressed_read_test.go

@@ -0,0 +1,97 @@
+package volume_server_http_test
+
+import (
+	"bytes"
+	"compress/gzip"
+	"io"
+	"net/http"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func gzipData(t testing.TB, data []byte) []byte {
+	t.Helper()
+	var buf bytes.Buffer
+	zw := gzip.NewWriter(&buf)
+	if _, err := zw.Write(data); err != nil {
+		t.Fatalf("gzip write: %v", err)
+	}
+	if err := zw.Close(); err != nil {
+		t.Fatalf("gzip close: %v", err)
+	}
+	return buf.Bytes()
+}
+
+func gunzipData(t testing.TB, data []byte) []byte {
+	t.Helper()
+	zr, err := gzip.NewReader(bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("gunzip new reader: %v", err)
+	}
+	defer zr.Close()
+	out, err := io.ReadAll(zr)
+	if err != nil {
+		t.Fatalf("gunzip read: %v", err)
+	}
+	return out
+}
+
+func TestCompressedReadAcceptEncodingMatrix(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(103)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 772007, 0x708192A3)
+	plainPayload := []byte("compressed-read-accept-encoding-matrix-content-compressed-read-accept-encoding-matrix-content")
+	compressedPayload := gzipData(t, plainPayload)
+
+	uploadReq, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+fid, bytes.NewReader(compressedPayload))
+	if err != nil {
+		t.Fatalf("create compressed upload request: %v", err)
+	}
+	uploadReq.Header.Set("Content-Type", "text/plain")
+	uploadReq.Header.Set("Content-Encoding", "gzip")
+	uploadResp := framework.DoRequest(t, client, uploadReq)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("compressed upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	gzipReadReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	gzipReadReq.Header.Set("Accept-Encoding", "gzip")
+	gzipReadResp := framework.DoRequest(t, client, gzipReadReq)
+	gzipReadBody := framework.ReadAllAndClose(t, gzipReadResp)
+	if gzipReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("gzip-accepted read expected 200, got %d", gzipReadResp.StatusCode)
+	}
+	if gzipReadResp.Header.Get("Content-Encoding") != "gzip" {
+		t.Fatalf("gzip-accepted read expected Content-Encoding=gzip, got %q", gzipReadResp.Header.Get("Content-Encoding"))
+	}
+	if string(gunzipData(t, gzipReadBody)) != string(plainPayload) {
+		t.Fatalf("gzip-accepted read body mismatch after gunzip")
+	}
+
+	identityReadReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	identityReadReq.Header.Set("Accept-Encoding", "identity")
+	identityReadResp := framework.DoRequest(t, client, identityReadReq)
+	identityReadBody := framework.ReadAllAndClose(t, identityReadResp)
+	if identityReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("identity read expected 200, got %d", identityReadResp.StatusCode)
+	}
+	if identityReadResp.Header.Get("Content-Encoding") != "" {
+		t.Fatalf("identity read expected no Content-Encoding header, got %q", identityReadResp.Header.Get("Content-Encoding"))
+	}
+	if string(identityReadBody) != string(plainPayload) {
+		t.Fatalf("identity read body mismatch: got %q want %q", string(identityReadBody), string(plainPayload))
+	}
+}

test/volume_server/http/headers_static_test.go

@@ -0,0 +1,102 @@
+package volume_server_http_test
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func TestReadPassthroughHeadersAndDownloadDisposition(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(96)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fullFileID := framework.NewFileID(volumeID, 661122, 0x55667788)
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fullFileID, []byte("passthrough-header-content"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	parts := strings.SplitN(fullFileID, ",", 2)
+	if len(parts) != 2 {
+		t.Fatalf("unexpected file id format: %q", fullFileID)
+	}
+	fidOnly := parts[1]
+
+	url := fmt.Sprintf("%s/%d/%s/%s?response-content-type=text/plain&response-cache-control=no-store&dl=true",
+		clusterHarness.VolumeAdminURL(),
+		volumeID,
+		fidOnly,
+		"report.txt",
+	)
+	resp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, url))
+	_ = framework.ReadAllAndClose(t, resp)
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("passthrough read expected 200, got %d", resp.StatusCode)
+	}
+	if resp.Header.Get("Content-Type") != "text/plain" {
+		t.Fatalf("response-content-type override mismatch: %q", resp.Header.Get("Content-Type"))
+	}
+	if resp.Header.Get("Cache-Control") != "no-store" {
+		t.Fatalf("response-cache-control override mismatch: %q", resp.Header.Get("Cache-Control"))
+	}
+	contentDisposition := resp.Header.Get("Content-Disposition")
+	if !strings.Contains(contentDisposition, "attachment") || !strings.Contains(contentDisposition, "report.txt") {
+		t.Fatalf("download disposition header mismatch: %q", contentDisposition)
+	}
+}
+
+func TestStaticAssetEndpoints(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	client := framework.NewHTTPClient()
+
+	faviconResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/favicon.ico"))
+	_ = framework.ReadAllAndClose(t, faviconResp)
+	if faviconResp.StatusCode != http.StatusOK {
+		t.Fatalf("/favicon.ico expected 200, got %d", faviconResp.StatusCode)
+	}
+
+	staticResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/seaweedfsstatic/seaweed50x50.png"))
+	_ = framework.ReadAllAndClose(t, staticResp)
+	if staticResp.StatusCode != http.StatusOK {
+		t.Fatalf("/seaweedfsstatic/seaweed50x50.png expected 200, got %d", staticResp.StatusCode)
+	}
+}
+
+func TestStaticAssetEndpointsOnPublicPort(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P2())
+	client := framework.NewHTTPClient()
+
+	faviconResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, clusterHarness.VolumePublicURL()+"/favicon.ico"))
+	_ = framework.ReadAllAndClose(t, faviconResp)
+	if faviconResp.StatusCode != http.StatusOK {
+		t.Fatalf("public /favicon.ico expected 200, got %d", faviconResp.StatusCode)
+	}
+
+	staticResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, clusterHarness.VolumePublicURL()+"/seaweedfsstatic/seaweed50x50.png"))
+	_ = framework.ReadAllAndClose(t, staticResp)
+	if staticResp.StatusCode != http.StatusOK {
+		t.Fatalf("public /seaweedfsstatic/seaweed50x50.png expected 200, got %d", staticResp.StatusCode)
+	}
+}

test/volume_server/http/image_transform_test.go

@@ -0,0 +1,92 @@
+package volume_server_http_test
+
+import (
+	"bytes"
+	"fmt"
+	"image"
+	"image/color"
+	"image/png"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func makePNGFixture(t testing.TB, width, height int) []byte {
+	t.Helper()
+
+	img := image.NewRGBA(image.Rect(0, 0, width, height))
+	for y := 0; y < height; y++ {
+		for x := 0; x < width; x++ {
+			img.Set(x, y, color.RGBA{R: uint8(x * 20), G: uint8(y * 20), B: 200, A: 255})
+		}
+	}
+
+	var buf bytes.Buffer
+	if err := png.Encode(&buf, img); err != nil {
+		t.Fatalf("encode png fixture: %v", err)
+	}
+	return buf.Bytes()
+}
+
+func decodeImageConfig(t testing.TB, data []byte) image.Config {
+	t.Helper()
+	cfg, _, err := image.DecodeConfig(bytes.NewReader(data))
+	if err != nil {
+		t.Fatalf("decode image config: %v", err)
+	}
+	return cfg
+}
+
+func TestImageResizeAndCropReadVariants(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(101)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fullFileID := framework.NewFileID(volumeID, 772004, 0x4D5E6F70)
+	uploadReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fullFileID, makePNGFixture(t, 6, 4))
+	uploadReq.Header.Set("Content-Type", "image/png")
+	uploadResp := framework.DoRequest(t, client, uploadReq)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("image upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	parts := strings.SplitN(fullFileID, ",", 2)
+	if len(parts) != 2 {
+		t.Fatalf("unexpected file id format: %q", fullFileID)
+	}
+	fidOnly := parts[1]
+
+	resizeURL := fmt.Sprintf("%s/%d/%s/%s?width=2&height=1", clusterHarness.VolumeAdminURL(), volumeID, fidOnly, "fixture.png")
+	resizeResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, resizeURL))
+	resizeBody := framework.ReadAllAndClose(t, resizeResp)
+	if resizeResp.StatusCode != http.StatusOK {
+		t.Fatalf("image resize read expected 200, got %d", resizeResp.StatusCode)
+	}
+	resizeCfg := decodeImageConfig(t, resizeBody)
+	if resizeCfg.Width > 2 || resizeCfg.Height > 1 {
+		t.Fatalf("image resize expected dimensions <= 2x1, got %dx%d", resizeCfg.Width, resizeCfg.Height)
+	}
+
+	cropURL := fmt.Sprintf("%s/%d/%s/%s?crop_x1=1&crop_y1=1&crop_x2=4&crop_y2=3", clusterHarness.VolumeAdminURL(), volumeID, fidOnly, "fixture.png")
+	cropResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, cropURL))
+	cropBody := framework.ReadAllAndClose(t, cropResp)
+	if cropResp.StatusCode != http.StatusOK {
+		t.Fatalf("image crop read expected 200, got %d", cropResp.StatusCode)
+	}
+	cropCfg := decodeImageConfig(t, cropBody)
+	if cropCfg.Width != 3 || cropCfg.Height != 2 {
+		t.Fatalf("image crop expected 3x2, got %dx%d", cropCfg.Width, cropCfg.Height)
+	}
+}

test/volume_server/http/public_cors_methods_test.go

@@ -0,0 +1,287 @@
+package volume_server_http_test
+
+import (
+	"bytes"
+	"net/http"
+	"strconv"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func TestPublicPortReadOnlyMethodBehavior(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P2())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(81)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, 123321, 0x01020304)
+	originalData := []byte("public-port-original")
+	replacementData := []byte("public-port-replacement")
+	client := framework.NewHTTPClient()
+
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, originalData)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("admin upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	publicReadResp := framework.ReadBytes(t, client, clusterHarness.VolumePublicURL(), fid)
+	publicReadBody := framework.ReadAllAndClose(t, publicReadResp)
+	if publicReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("public GET expected 200, got %d", publicReadResp.StatusCode)
+	}
+	if string(publicReadBody) != string(originalData) {
+		t.Fatalf("public GET body mismatch: got %q want %q", string(publicReadBody), string(originalData))
+	}
+
+	publicPostReq := newUploadRequest(t, clusterHarness.VolumePublicURL()+"/"+fid, replacementData)
+	publicPostResp := framework.DoRequest(t, client, publicPostReq)
+	_ = framework.ReadAllAndClose(t, publicPostResp)
+	if publicPostResp.StatusCode != http.StatusOK {
+		t.Fatalf("public POST expected passthrough 200, got %d", publicPostResp.StatusCode)
+	}
+
+	publicDeleteResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodDelete, clusterHarness.VolumePublicURL()+"/"+fid))
+	_ = framework.ReadAllAndClose(t, publicDeleteResp)
+	if publicDeleteResp.StatusCode != http.StatusOK {
+		t.Fatalf("public DELETE expected passthrough 200, got %d", publicDeleteResp.StatusCode)
+	}
+
+	adminReadResp := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), fid)
+	adminReadBody := framework.ReadAllAndClose(t, adminReadResp)
+	if adminReadResp.StatusCode != http.StatusOK {
+		t.Fatalf("admin GET after public POST/DELETE expected 200, got %d", adminReadResp.StatusCode)
+	}
+	if string(adminReadBody) != string(originalData) {
+		t.Fatalf("public port should not mutate data: got %q want %q", string(adminReadBody), string(originalData))
+	}
+}
+
+func TestCorsAndUnsupportedMethodBehavior(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P2())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(82)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, 789789, 0x0A0B0C0D)
+	client := framework.NewHTTPClient()
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, []byte("cors-check"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("admin upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	adminOriginReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	adminOriginReq.Header.Set("Origin", "https://example.com")
+	adminOriginResp := framework.DoRequest(t, client, adminOriginReq)
+	_ = framework.ReadAllAndClose(t, adminOriginResp)
+	if adminOriginResp.Header.Get("Access-Control-Allow-Origin") != "*" {
+		t.Fatalf("admin GET origin header mismatch: %q", adminOriginResp.Header.Get("Access-Control-Allow-Origin"))
+	}
+	if adminOriginResp.Header.Get("Access-Control-Allow-Credentials") != "true" {
+		t.Fatalf("admin GET credentials header mismatch: %q", adminOriginResp.Header.Get("Access-Control-Allow-Credentials"))
+	}
+
+	publicOriginReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumePublicURL()+"/"+fid)
+	publicOriginReq.Header.Set("Origin", "https://example.com")
+	publicOriginResp := framework.DoRequest(t, client, publicOriginReq)
+	_ = framework.ReadAllAndClose(t, publicOriginResp)
+	if publicOriginResp.Header.Get("Access-Control-Allow-Origin") != "*" {
+		t.Fatalf("public GET origin header mismatch: %q", publicOriginResp.Header.Get("Access-Control-Allow-Origin"))
+	}
+	if publicOriginResp.Header.Get("Access-Control-Allow-Credentials") != "true" {
+		t.Fatalf("public GET credentials header mismatch: %q", publicOriginResp.Header.Get("Access-Control-Allow-Credentials"))
+	}
+
+	adminPatchReq, err := http.NewRequest(http.MethodPatch, clusterHarness.VolumeAdminURL()+"/"+fid, bytes.NewReader([]byte("patch")))
+	if err != nil {
+		t.Fatalf("create admin PATCH request: %v", err)
+	}
+	adminPatchResp := framework.DoRequest(t, client, adminPatchReq)
+	_ = framework.ReadAllAndClose(t, adminPatchResp)
+	if adminPatchResp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("admin PATCH expected 400, got %d", adminPatchResp.StatusCode)
+	}
+
+	publicPatchReq, err := http.NewRequest(http.MethodPatch, clusterHarness.VolumePublicURL()+"/"+fid, bytes.NewReader([]byte("patch")))
+	if err != nil {
+		t.Fatalf("create public PATCH request: %v", err)
+	}
+	publicPatchResp := framework.DoRequest(t, client, publicPatchReq)
+	_ = framework.ReadAllAndClose(t, publicPatchResp)
+	if publicPatchResp.StatusCode != http.StatusOK {
+		t.Fatalf("public PATCH expected passthrough 200, got %d", publicPatchResp.StatusCode)
+	}
+}
+
+func TestUnsupportedMethodTraceParity(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P2())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(83)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, 123999, 0x01010101)
+	client := framework.NewHTTPClient()
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, []byte("trace-method-check"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	adminTraceReq := mustNewRequest(t, http.MethodTrace, clusterHarness.VolumeAdminURL()+"/"+fid)
+	adminTraceResp := framework.DoRequest(t, client, adminTraceReq)
+	_ = framework.ReadAllAndClose(t, adminTraceResp)
+	if adminTraceResp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("admin TRACE expected 400, got %d", adminTraceResp.StatusCode)
+	}
+
+	publicTraceReq := mustNewRequest(t, http.MethodTrace, clusterHarness.VolumePublicURL()+"/"+fid)
+	publicTraceResp := framework.DoRequest(t, client, publicTraceReq)
+	_ = framework.ReadAllAndClose(t, publicTraceResp)
+	if publicTraceResp.StatusCode != http.StatusOK {
+		t.Fatalf("public TRACE expected passthrough 200, got %d", publicTraceResp.StatusCode)
+	}
+}
+
+func TestUnsupportedMethodPropfindParity(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P2())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(84)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, 124000, 0x02020202)
+	client := framework.NewHTTPClient()
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, []byte("propfind-method-check"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	adminReq := mustNewRequest(t, "PROPFIND", clusterHarness.VolumeAdminURL()+"/"+fid)
+	adminResp := framework.DoRequest(t, client, adminReq)
+	_ = framework.ReadAllAndClose(t, adminResp)
+	if adminResp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("admin PROPFIND expected 400, got %d", adminResp.StatusCode)
+	}
+
+	publicReq := mustNewRequest(t, "PROPFIND", clusterHarness.VolumePublicURL()+"/"+fid)
+	publicResp := framework.DoRequest(t, client, publicReq)
+	_ = framework.ReadAllAndClose(t, publicResp)
+	if publicResp.StatusCode != http.StatusOK {
+		t.Fatalf("public PROPFIND expected passthrough 200, got %d", publicResp.StatusCode)
+	}
+
+	verifyResp := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), fid)
+	verifyBody := framework.ReadAllAndClose(t, verifyResp)
+	if verifyResp.StatusCode != http.StatusOK {
+		t.Fatalf("verify GET expected 200, got %d", verifyResp.StatusCode)
+	}
+	if string(verifyBody) != "propfind-method-check" {
+		t.Fatalf("PROPFIND should not mutate data, got %q", string(verifyBody))
+	}
+}
+
+func TestUnsupportedMethodConnectParity(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P2())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(85)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, 124001, 0x03030303)
+	client := framework.NewHTTPClient()
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, []byte("connect-method-check"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	adminReq := mustNewRequest(t, "CONNECT", clusterHarness.VolumeAdminURL()+"/"+fid)
+	adminResp := framework.DoRequest(t, client, adminReq)
+	_ = framework.ReadAllAndClose(t, adminResp)
+	if adminResp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("admin CONNECT expected 400, got %d", adminResp.StatusCode)
+	}
+
+	publicReq := mustNewRequest(t, "CONNECT", clusterHarness.VolumePublicURL()+"/"+fid)
+	publicResp := framework.DoRequest(t, client, publicReq)
+	_ = framework.ReadAllAndClose(t, publicResp)
+	if publicResp.StatusCode != http.StatusOK {
+		t.Fatalf("public CONNECT expected passthrough 200, got %d", publicResp.StatusCode)
+	}
+
+	verifyResp := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), fid)
+	verifyBody := framework.ReadAllAndClose(t, verifyResp)
+	if verifyResp.StatusCode != http.StatusOK {
+		t.Fatalf("verify GET expected 200, got %d", verifyResp.StatusCode)
+	}
+	if string(verifyBody) != "connect-method-check" {
+		t.Fatalf("CONNECT should not mutate data, got %q", string(verifyBody))
+	}
+}
+
+func TestPublicPortHeadReadParity(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P2())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(86)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, 124002, 0x04040404)
+	payload := []byte("public-head-parity-content")
+	client := framework.NewHTTPClient()
+
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	headResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodHead, clusterHarness.VolumePublicURL()+"/"+fid))
+	headBody := framework.ReadAllAndClose(t, headResp)
+	if headResp.StatusCode != http.StatusOK {
+		t.Fatalf("public HEAD expected 200, got %d", headResp.StatusCode)
+	}
+	if got := headResp.Header.Get("Content-Length"); got != strconv.Itoa(len(payload)) {
+		t.Fatalf("public HEAD content-length mismatch: got %q want %d", got, len(payload))
+	}
+	if len(headBody) != 0 {
+		t.Fatalf("public HEAD body should be empty, got %d bytes", len(headBody))
+	}
+}

test/volume_server/http/range_variants_test.go

@@ -0,0 +1,82 @@
+package volume_server_http_test
+
+import (
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func TestMultiRangeReadReturnsMultipartPayload(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(97)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 771999, 0x0A1B2C3D)
+	payload := []byte("0123456789abcdef")
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	multiRangeReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	multiRangeReq.Header.Set("Range", "bytes=0-1,4-5")
+	multiRangeResp := framework.DoRequest(t, client, multiRangeReq)
+	multiRangeBody := framework.ReadAllAndClose(t, multiRangeResp)
+	if multiRangeResp.StatusCode != http.StatusPartialContent {
+		t.Fatalf("multi-range expected 206, got %d", multiRangeResp.StatusCode)
+	}
+	if !strings.Contains(multiRangeResp.Header.Get("Content-Type"), "multipart/byteranges") {
+		t.Fatalf("multi-range content-type mismatch: %q", multiRangeResp.Header.Get("Content-Type"))
+	}
+
+	bodyText := string(multiRangeBody)
+	if !strings.Contains(bodyText, "01") || !strings.Contains(bodyText, "45") {
+		t.Fatalf("multi-range body missing expected segments: %q", bodyText)
+	}
+}
+
+func TestOversizedCombinedRangesAreIgnored(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(100)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 772003, 0x3C4D5E6F)
+	payload := []byte("0123456789abcdef")
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	// Range bytes sum is 22 (> payload size 16), which exercises the oversized-range guard path.
+	oversizedRangeReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	oversizedRangeReq.Header.Set("Range", "bytes=0-10,5-15")
+	oversizedRangeResp := framework.DoRequest(t, client, oversizedRangeReq)
+	oversizedRangeBody := framework.ReadAllAndClose(t, oversizedRangeResp)
+	if oversizedRangeResp.StatusCode != http.StatusOK {
+		t.Fatalf("oversized combined range expected 200, got %d", oversizedRangeResp.StatusCode)
+	}
+	if len(oversizedRangeBody) != 0 {
+		t.Fatalf("oversized combined range expected empty body, got %d bytes", len(oversizedRangeBody))
+	}
+}

test/volume_server/http/read_deleted_test.go

@@ -0,0 +1,54 @@
+package volume_server_http_test
+
+import (
+	"net/http"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func TestReadDeletedQueryReturnsDeletedNeedleData(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(94)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 551234, 0xCAFE1234)
+	payload := []byte("read-deleted-needle-payload")
+
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	deleteResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodDelete, clusterHarness.VolumeAdminURL()+"/"+fid))
+	_ = framework.ReadAllAndClose(t, deleteResp)
+	if deleteResp.StatusCode != http.StatusAccepted {
+		t.Fatalf("delete expected 202, got %d", deleteResp.StatusCode)
+	}
+
+	normalRead := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), fid)
+	_ = framework.ReadAllAndClose(t, normalRead)
+	if normalRead.StatusCode != http.StatusNotFound {
+		t.Fatalf("normal read after delete expected 404, got %d", normalRead.StatusCode)
+	}
+
+	readDeletedReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid+"?readDeleted=true")
+	readDeletedResp := framework.DoRequest(t, client, readDeletedReq)
+	readDeletedBody := framework.ReadAllAndClose(t, readDeletedResp)
+	if readDeletedResp.StatusCode != http.StatusOK {
+		t.Fatalf("read with readDeleted=true expected 200, got %d", readDeletedResp.StatusCode)
+	}
+	if string(readDeletedBody) != string(payload) {
+		t.Fatalf("readDeleted body mismatch: got %q want %q", string(readDeletedBody), string(payload))
+	}
+}

test/volume_server/http/read_mode_proxy_redirect_test.go

@@ -0,0 +1,319 @@
+package volume_server_http_test
+
+import (
+	"net/http"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func TestReadModeProxyMissingLocalVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P1()
+	profile.ReadMode = "proxy"
+	clusterHarness := framework.StartDualVolumeCluster(t, profile)
+
+	conn0, grpc0 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer conn0.Close()
+
+	const volumeID = uint32(101)
+	framework.AllocateVolume(t, grpc0, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 120001, 0x0102ABCD)
+	payload := []byte("proxy-read-mode-forwarded-content")
+
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(0), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	readURL := clusterHarness.VolumeAdminURL(1) + "/" + fid
+	var finalBody []byte
+	if !waitForHTTPStatus(t, client, readURL, http.StatusOK, 10*time.Second, func(resp *http.Response) {
+		finalBody = framework.ReadAllAndClose(t, resp)
+	}) {
+		t.Fatalf("proxy read mode did not return 200 from non-owning volume server within deadline")
+	}
+	if string(finalBody) != string(payload) {
+		t.Fatalf("proxy read mode body mismatch: got %q want %q", string(finalBody), string(payload))
+	}
+}
+
+func TestReadModeRedirectMissingLocalVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P1()
+	profile.ReadMode = "redirect"
+	clusterHarness := framework.StartDualVolumeCluster(t, profile)
+
+	conn0, grpc0 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer conn0.Close()
+
+	const volumeID = uint32(102)
+	framework.AllocateVolume(t, grpc0, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 120002, 0x0102DCBA)
+	payload := []byte("redirect-read-mode-content")
+
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(0), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	noRedirectClient := &http.Client{
+		Timeout: 10 * time.Second,
+		CheckRedirect: func(req *http.Request, via []*http.Request) error {
+			return http.ErrUseLastResponse
+		},
+	}
+
+	readURL := clusterHarness.VolumeAdminURL(1) + "/" + fid
+	var redirectLocation string
+	if !waitForHTTPStatus(t, noRedirectClient, readURL, http.StatusMovedPermanently, 10*time.Second, func(resp *http.Response) {
+		redirectLocation = resp.Header.Get("Location")
+		_ = framework.ReadAllAndClose(t, resp)
+	}) {
+		t.Fatalf("redirect read mode did not return 301 from non-owning volume server within deadline")
+	}
+	if redirectLocation == "" {
+		t.Fatalf("redirect response missing Location header")
+	}
+	if !strings.Contains(redirectLocation, "proxied=true") {
+		t.Fatalf("redirect Location should include proxied=true, got %q", redirectLocation)
+	}
+
+	followResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, redirectLocation))
+	followBody := framework.ReadAllAndClose(t, followResp)
+	if followResp.StatusCode != http.StatusOK {
+		t.Fatalf("following redirect expected 200, got %d", followResp.StatusCode)
+	}
+	if string(followBody) != string(payload) {
+		t.Fatalf("redirect-follow body mismatch: got %q want %q", string(followBody), string(payload))
+	}
+}
+
+func TestReadModeLocalMissingLocalVolumeReturnsNotFound(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P1()
+	profile.ReadMode = "local"
+	clusterHarness := framework.StartDualVolumeCluster(t, profile)
+
+	conn0, grpc0 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer conn0.Close()
+
+	const volumeID = uint32(103)
+	framework.AllocateVolume(t, grpc0, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 120003, 0x0102BEEF)
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(0), fid, []byte("local-read-mode-content"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	readResp := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(1), fid)
+	_ = framework.ReadAllAndClose(t, readResp)
+	if readResp.StatusCode != http.StatusNotFound {
+		t.Fatalf("local read mode expected 404 on non-owning server, got %d", readResp.StatusCode)
+	}
+}
+
+func TestReadDeletedProxyModeOnMissingLocalVolume(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P1()
+	profile.ReadMode = "proxy"
+	clusterHarness := framework.StartDualVolumeCluster(t, profile)
+
+	conn0, grpc0 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer conn0.Close()
+
+	const volumeID = uint32(104)
+	framework.AllocateVolume(t, grpc0, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 120004, 0x0102CAFE)
+	payload := []byte("proxy-readDeleted-missing-local-content")
+
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(0), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	deleteResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodDelete, clusterHarness.VolumeAdminURL(0)+"/"+fid))
+	_ = framework.ReadAllAndClose(t, deleteResp)
+	if deleteResp.StatusCode != http.StatusAccepted {
+		t.Fatalf("delete expected 202, got %d", deleteResp.StatusCode)
+	}
+
+	readURL := clusterHarness.VolumeAdminURL(1) + "/" + fid + "?readDeleted=true"
+	var proxiedBody []byte
+	if !waitForHTTPStatus(t, client, readURL, http.StatusOK, 10*time.Second, func(resp *http.Response) {
+		proxiedBody = framework.ReadAllAndClose(t, resp)
+	}) {
+		t.Fatalf("proxy readDeleted path did not return 200 from non-owning volume server within deadline")
+	}
+	if string(proxiedBody) != string(payload) {
+		t.Fatalf("proxy readDeleted body mismatch: got %q want %q", string(proxiedBody), string(payload))
+	}
+}
+
+func TestReadDeletedRedirectModeDropsQueryParameterParity(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P1()
+	profile.ReadMode = "redirect"
+	clusterHarness := framework.StartDualVolumeCluster(t, profile)
+
+	conn0, grpc0 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer conn0.Close()
+
+	const volumeID = uint32(105)
+	framework.AllocateVolume(t, grpc0, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 120005, 0x0102FACE)
+	payload := []byte("redirect-readDeleted-query-drop-parity")
+
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(0), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	deleteResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodDelete, clusterHarness.VolumeAdminURL(0)+"/"+fid))
+	_ = framework.ReadAllAndClose(t, deleteResp)
+	if deleteResp.StatusCode != http.StatusAccepted {
+		t.Fatalf("delete expected 202, got %d", deleteResp.StatusCode)
+	}
+
+	noRedirectClient := &http.Client{
+		Timeout: 10 * time.Second,
+		CheckRedirect: func(req *http.Request, via []*http.Request) error {
+			return http.ErrUseLastResponse
+		},
+	}
+
+	redirectURL := clusterHarness.VolumeAdminURL(1) + "/" + fid + "?readDeleted=true"
+	var location string
+	if !waitForHTTPStatus(t, noRedirectClient, redirectURL, http.StatusMovedPermanently, 10*time.Second, func(resp *http.Response) {
+		location = resp.Header.Get("Location")
+		_ = framework.ReadAllAndClose(t, resp)
+	}) {
+		t.Fatalf("redirect readDeleted path did not return 301 from non-owning volume server within deadline")
+	}
+	if location == "" {
+		t.Fatalf("redirect readDeleted response missing Location header")
+	}
+	if !strings.Contains(location, "proxied=true") {
+		t.Fatalf("redirect readDeleted Location should include proxied=true, got %q", location)
+	}
+	if strings.Contains(location, "readDeleted=true") {
+		t.Fatalf("redirect readDeleted Location should reflect current query-drop behavior, got %q", location)
+	}
+
+	followResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, location))
+	_ = framework.ReadAllAndClose(t, followResp)
+	if followResp.StatusCode != http.StatusNotFound {
+		t.Fatalf("redirect-follow without readDeleted query expected 404 for deleted needle, got %d", followResp.StatusCode)
+	}
+}
+
+func TestReadModeRedirectPreservesCollectionQuery(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P1()
+	profile.ReadMode = "redirect"
+	clusterHarness := framework.StartDualVolumeCluster(t, profile)
+
+	conn0, grpc0 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer conn0.Close()
+
+	const volumeID = uint32(109)
+	const collection = "redirect-collection"
+	framework.AllocateVolume(t, grpc0, volumeID, collection)
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 120006, 0x0102F00D)
+	payload := []byte("redirect-collection-preserve-content")
+
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(0), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	noRedirectClient := &http.Client{
+		Timeout: 10 * time.Second,
+		CheckRedirect: func(req *http.Request, via []*http.Request) error {
+			return http.ErrUseLastResponse
+		},
+	}
+
+	redirectURL := clusterHarness.VolumeAdminURL(1) + "/" + fid + "?collection=" + collection
+	var location string
+	if !waitForHTTPStatus(t, noRedirectClient, redirectURL, http.StatusMovedPermanently, 10*time.Second, func(resp *http.Response) {
+		location = resp.Header.Get("Location")
+		_ = framework.ReadAllAndClose(t, resp)
+	}) {
+		t.Fatalf("redirect collection path did not return 301 from non-owning volume server within deadline")
+	}
+	if location == "" {
+		t.Fatalf("redirect collection response missing Location header")
+	}
+	if !strings.Contains(location, "proxied=true") {
+		t.Fatalf("redirect collection Location should include proxied=true, got %q", location)
+	}
+	if !strings.Contains(location, "collection="+collection) {
+		t.Fatalf("redirect collection Location should preserve collection query, got %q", location)
+	}
+
+	followResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, location))
+	followBody := framework.ReadAllAndClose(t, followResp)
+	if followResp.StatusCode != http.StatusOK {
+		t.Fatalf("redirect-follow expected 200, got %d", followResp.StatusCode)
+	}
+	if string(followBody) != string(payload) {
+		t.Fatalf("redirect-follow body mismatch: got %q want %q", string(followBody), string(payload))
+	}
+}
+
+func waitForHTTPStatus(t testing.TB, client *http.Client, url string, expectedStatus int, timeout time.Duration, onMatch func(resp *http.Response)) bool {
+	t.Helper()
+
+	deadline := time.Now().Add(timeout)
+	for time.Now().Before(deadline) {
+		resp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, url))
+		if resp.StatusCode == expectedStatus {
+			onMatch(resp)
+			return true
+		}
+		_ = framework.ReadAllAndClose(t, resp)
+		time.Sleep(200 * time.Millisecond)
+	}
+
+	return false
+}

test/volume_server/http/read_path_variants_test.go

@@ -0,0 +1,191 @@
+package volume_server_http_test
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func TestReadPathShapesAndIfModifiedSince(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(93)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fullFileID := framework.NewFileID(volumeID, 771234, 0xBEEFCACE)
+	uploadPayload := []byte("read-path-shape-content")
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fullFileID, uploadPayload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	parts := strings.SplitN(fullFileID, ",", 2)
+	if len(parts) != 2 {
+		t.Fatalf("unexpected file id format: %q", fullFileID)
+	}
+	fidOnly := parts[1]
+
+	readByVidFid := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, fmt.Sprintf("%s/%d/%s", clusterHarness.VolumeAdminURL(), volumeID, fidOnly)))
+	readByVidFidBody := framework.ReadAllAndClose(t, readByVidFid)
+	if readByVidFid.StatusCode != http.StatusOK {
+		t.Fatalf("GET /{vid}/{fid} expected 200, got %d", readByVidFid.StatusCode)
+	}
+	if string(readByVidFidBody) != string(uploadPayload) {
+		t.Fatalf("GET /{vid}/{fid} body mismatch: got %q want %q", string(readByVidFidBody), string(uploadPayload))
+	}
+
+	readWithFilename := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, fmt.Sprintf("%s/%d/%s/%s", clusterHarness.VolumeAdminURL(), volumeID, fidOnly, "named.bin")))
+	readWithFilenameBody := framework.ReadAllAndClose(t, readWithFilename)
+	if readWithFilename.StatusCode != http.StatusOK {
+		t.Fatalf("GET /{vid}/{fid}/{filename} expected 200, got %d", readWithFilename.StatusCode)
+	}
+	if string(readWithFilenameBody) != string(uploadPayload) {
+		t.Fatalf("GET /{vid}/{fid}/{filename} body mismatch: got %q want %q", string(readWithFilenameBody), string(uploadPayload))
+	}
+
+	lastModified := readWithFilename.Header.Get("Last-Modified")
+	if lastModified == "" {
+		t.Fatalf("expected Last-Modified header on read response")
+	}
+
+	ifModifiedSinceReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fullFileID)
+	ifModifiedSinceReq.Header.Set("If-Modified-Since", lastModified)
+	ifModifiedSinceResp := framework.DoRequest(t, client, ifModifiedSinceReq)
+	_ = framework.ReadAllAndClose(t, ifModifiedSinceResp)
+	if ifModifiedSinceResp.StatusCode != http.StatusNotModified {
+		t.Fatalf("If-Modified-Since expected 304, got %d", ifModifiedSinceResp.StatusCode)
+	}
+
+	headIfModifiedSinceReq := mustNewRequest(t, http.MethodHead, clusterHarness.VolumeAdminURL()+"/"+fullFileID)
+	headIfModifiedSinceReq.Header.Set("If-Modified-Since", lastModified)
+	headIfModifiedSinceResp := framework.DoRequest(t, client, headIfModifiedSinceReq)
+	headIfModifiedSinceBody := framework.ReadAllAndClose(t, headIfModifiedSinceResp)
+	if headIfModifiedSinceResp.StatusCode != http.StatusNotModified {
+		t.Fatalf("HEAD If-Modified-Since expected 304, got %d", headIfModifiedSinceResp.StatusCode)
+	}
+	if len(headIfModifiedSinceBody) != 0 {
+		t.Fatalf("HEAD If-Modified-Since expected empty body, got %d bytes", len(headIfModifiedSinceBody))
+	}
+}
+
+func TestMalformedVidFidPathReturnsBadRequest(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	client := framework.NewHTTPClient()
+
+	resp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/not-a-vid/not-a-fid"))
+	_ = framework.ReadAllAndClose(t, resp)
+	if resp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("malformed /{vid}/{fid} expected 400, got %d", resp.StatusCode)
+	}
+}
+
+func TestReadWrongCookieReturnsNotFound(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(95)
+	const needleID = uint64(771235)
+	const cookie = uint32(0xBEEFCACF)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, needleID, cookie)
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, []byte("read-cookie-mismatch-content"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	wrongCookieFid := framework.NewFileID(volumeID, needleID, cookie+1)
+	getResp := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), wrongCookieFid)
+	_ = framework.ReadAllAndClose(t, getResp)
+	if getResp.StatusCode != http.StatusNotFound {
+		t.Fatalf("GET with wrong cookie expected 404, got %d", getResp.StatusCode)
+	}
+
+	headResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodHead, clusterHarness.VolumeAdminURL()+"/"+wrongCookieFid))
+	headBody := framework.ReadAllAndClose(t, headResp)
+	if headResp.StatusCode != http.StatusNotFound {
+		t.Fatalf("HEAD with wrong cookie expected 404, got %d", headResp.StatusCode)
+	}
+	if len(headBody) != 0 {
+		t.Fatalf("HEAD wrong-cookie response body should be empty, got %d bytes", len(headBody))
+	}
+}
+
+func TestConditionalHeaderPrecedenceAndInvalidIfModifiedSince(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(99)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 772002, 0x2B3C4D5E)
+	payload := []byte("conditional-precedence-content")
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, payload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	baselineResp := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), fid)
+	_ = framework.ReadAllAndClose(t, baselineResp)
+	if baselineResp.StatusCode != http.StatusOK {
+		t.Fatalf("baseline read expected 200, got %d", baselineResp.StatusCode)
+	}
+	lastModified := baselineResp.Header.Get("Last-Modified")
+	if lastModified == "" {
+		t.Fatalf("baseline read expected Last-Modified header")
+	}
+
+	precedenceReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	precedenceReq.Header.Set("If-Modified-Since", lastModified)
+	precedenceReq.Header.Set("If-None-Match", "\"definitely-different-etag\"")
+	precedenceResp := framework.DoRequest(t, client, precedenceReq)
+	precedenceBody := framework.ReadAllAndClose(t, precedenceResp)
+	if precedenceResp.StatusCode != http.StatusNotModified {
+		t.Fatalf("conditional precedence expected 304, got %d", precedenceResp.StatusCode)
+	}
+	if len(precedenceBody) != 0 {
+		t.Fatalf("conditional precedence expected empty body, got %d bytes", len(precedenceBody))
+	}
+
+	invalidIMSReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid)
+	invalidIMSReq.Header.Set("If-Modified-Since", "not-a-valid-http-date")
+	invalidIMSReq.Header.Set("If-None-Match", "\"definitely-different-etag\"")
+	invalidIMSResp := framework.DoRequest(t, client, invalidIMSReq)
+	invalidIMSBody := framework.ReadAllAndClose(t, invalidIMSResp)
+	if invalidIMSResp.StatusCode != http.StatusOK {
+		t.Fatalf("invalid If-Modified-Since with mismatched etag expected 200, got %d", invalidIMSResp.StatusCode)
+	}
+	if string(invalidIMSBody) != string(payload) {
+		t.Fatalf("invalid If-Modified-Since fallback body mismatch: got %q want %q", string(invalidIMSBody), string(payload))
+	}
+}

test/volume_server/http/read_write_delete_test.go

@@ -0,0 +1,123 @@
+package volume_server_http_test
+
+import (
+	"net/http"
+	"strconv"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func TestUploadReadRangeHeadDeleteRoundTrip(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, cluster.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(7)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	fid := framework.NewFileID(volumeID, 123456, 0xA1B2C3D4)
+	data := []byte("hello-volume-server-integration")
+	client := framework.NewHTTPClient()
+
+	uploadResp := framework.UploadBytes(t, client, cluster.VolumeAdminURL(), fid, data)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload status: expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	getResp := framework.ReadBytes(t, client, cluster.VolumeAdminURL(), fid)
+	getBody := framework.ReadAllAndClose(t, getResp)
+	if getResp.StatusCode != http.StatusOK {
+		t.Fatalf("get status: expected 200, got %d", getResp.StatusCode)
+	}
+	if string(getBody) != string(data) {
+		t.Fatalf("get body mismatch: got %q want %q", string(getBody), string(data))
+	}
+	etag := getResp.Header.Get("ETag")
+	if etag == "" {
+		t.Fatalf("expected ETag header from GET response")
+	}
+
+	notModifiedReq := mustNewRequest(t, http.MethodGet, cluster.VolumeAdminURL()+"/"+fid)
+	notModifiedReq.Header.Set("If-None-Match", etag)
+	notModifiedResp := framework.DoRequest(t, client, notModifiedReq)
+	_ = framework.ReadAllAndClose(t, notModifiedResp)
+	if notModifiedResp.StatusCode != http.StatusNotModified {
+		t.Fatalf("if-none-match expected 304, got %d", notModifiedResp.StatusCode)
+	}
+
+	rangeReq := mustNewRequest(t, http.MethodGet, cluster.VolumeAdminURL()+"/"+fid)
+	rangeReq.Header.Set("Range", "bytes=0-4")
+	rangeResp := framework.DoRequest(t, client, rangeReq)
+	rangeBody := framework.ReadAllAndClose(t, rangeResp)
+	if rangeResp.StatusCode != http.StatusPartialContent {
+		t.Fatalf("range status: expected 206, got %d", rangeResp.StatusCode)
+	}
+	if got, want := string(rangeBody), "hello"; got != want {
+		t.Fatalf("range body mismatch: got %q want %q", got, want)
+	}
+
+	invalidRangeReq := mustNewRequest(t, http.MethodGet, cluster.VolumeAdminURL()+"/"+fid)
+	invalidRangeReq.Header.Set("Range", "bytes=9999-10000")
+	invalidRangeResp := framework.DoRequest(t, client, invalidRangeReq)
+	_ = framework.ReadAllAndClose(t, invalidRangeResp)
+	if invalidRangeResp.StatusCode != http.StatusRequestedRangeNotSatisfiable {
+		t.Fatalf("invalid range expected 416, got %d", invalidRangeResp.StatusCode)
+	}
+
+	headResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodHead, cluster.VolumeAdminURL()+"/"+fid))
+	headBody := framework.ReadAllAndClose(t, headResp)
+	if headResp.StatusCode != http.StatusOK {
+		t.Fatalf("head status: expected 200, got %d", headResp.StatusCode)
+	}
+	if got := headResp.Header.Get("Content-Length"); got != strconv.Itoa(len(data)) {
+		t.Fatalf("head content-length mismatch: got %q want %d", got, len(data))
+	}
+	if len(headBody) != 0 {
+		t.Fatalf("head body should be empty, got %d bytes", len(headBody))
+	}
+
+	headNotModifiedReq := mustNewRequest(t, http.MethodHead, cluster.VolumeAdminURL()+"/"+fid)
+	headNotModifiedReq.Header.Set("If-None-Match", etag)
+	headNotModifiedResp := framework.DoRequest(t, client, headNotModifiedReq)
+	headNotModifiedBody := framework.ReadAllAndClose(t, headNotModifiedResp)
+	if headNotModifiedResp.StatusCode != http.StatusNotModified {
+		t.Fatalf("head if-none-match expected 304, got %d", headNotModifiedResp.StatusCode)
+	}
+	if len(headNotModifiedBody) != 0 {
+		t.Fatalf("head if-none-match body should be empty, got %d bytes", len(headNotModifiedBody))
+	}
+
+	deleteResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodDelete, cluster.VolumeAdminURL()+"/"+fid))
+	_ = framework.ReadAllAndClose(t, deleteResp)
+	if deleteResp.StatusCode != http.StatusAccepted {
+		t.Fatalf("delete status: expected 202, got %d", deleteResp.StatusCode)
+	}
+
+	notFoundResp := framework.ReadBytes(t, client, cluster.VolumeAdminURL(), fid)
+	_ = framework.ReadAllAndClose(t, notFoundResp)
+	if notFoundResp.StatusCode != http.StatusNotFound {
+		t.Fatalf("read after delete: expected 404, got %d", notFoundResp.StatusCode)
+	}
+}
+
+func TestInvalidReadPathReturnsBadRequest(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	cluster := framework.StartSingleVolumeCluster(t, matrix.P1())
+	client := framework.NewHTTPClient()
+
+	resp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, cluster.VolumeAdminURL()+"/invalid,needle"))
+	_ = framework.ReadAllAndClose(t, resp)
+	if resp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("invalid read expected 400, got %d", resp.StatusCode)
+	}
+}

test/volume_server/http/throttling_test.go

@@ -0,0 +1,730 @@
+package volume_server_http_test
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"net/http"
+	"testing"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+	"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
+	"github.com/seaweedfs/seaweedfs/weed/storage/needle"
+)
+
+type pausableReader struct {
+	remaining  int64
+	pauseAfter int64
+	paused     bool
+	unblock    <-chan struct{}
+}
+
+func (r *pausableReader) Read(p []byte) (int, error) {
+	if r.remaining <= 0 {
+		return 0, io.EOF
+	}
+	if !r.paused && r.pauseAfter > 0 {
+		n := int64(len(p))
+		if n > r.pauseAfter {
+			n = r.pauseAfter
+		}
+		for i := int64(0); i < n; i++ {
+			p[i] = 'a'
+		}
+		r.remaining -= n
+		r.pauseAfter -= n
+		if r.pauseAfter == 0 {
+			r.paused = true
+		}
+		return int(n), nil
+	}
+	if r.paused {
+		<-r.unblock
+		r.paused = false
+	}
+	n := int64(len(p))
+	if n > r.remaining {
+		n = r.remaining
+	}
+	for i := int64(0); i < n; i++ {
+		p[i] = 'b'
+	}
+	r.remaining -= n
+	return int(n), nil
+}
+
+func TestUploadLimitTimeoutAndReplicateBypass(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P8())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(98)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	const blockedUploadSize = 2 * 1024 * 1024 // over 1MB P8 upload limit
+
+	unblockFirstUpload := make(chan struct{})
+	firstUploadDone := make(chan error, 1)
+	firstFID := framework.NewFileID(volumeID, 880001, 0x1A2B3C4D)
+	go func() {
+		req, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+firstFID, &pausableReader{
+			remaining:  blockedUploadSize,
+			pauseAfter: 1,
+			unblock:    unblockFirstUpload,
+		})
+		if err != nil {
+			firstUploadDone <- err
+			return
+		}
+		req.Header.Set("Content-Type", "application/octet-stream")
+		req.ContentLength = blockedUploadSize
+
+		resp, err := (&http.Client{}).Do(req)
+		if resp != nil {
+			_, _ = io.Copy(io.Discard, resp.Body)
+			_ = resp.Body.Close()
+		}
+		firstUploadDone <- err
+	}()
+
+	// Give the first upload time to pass limit checks and block in body processing.
+	time.Sleep(300 * time.Millisecond)
+
+	replicateFID := framework.NewFileID(volumeID, 880002, 0x5E6F7A8B)
+	replicateReq, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+replicateFID+"?type=replicate", bytes.NewReader([]byte("replicate")))
+	if err != nil {
+		t.Fatalf("create replicate request: %v", err)
+	}
+	replicateReq.Header.Set("Content-Type", "application/octet-stream")
+	replicateReq.ContentLength = int64(len("replicate"))
+	replicateResp, err := framework.NewHTTPClient().Do(replicateReq)
+	if err != nil {
+		t.Fatalf("replicate request failed: %v", err)
+	}
+	_ = framework.ReadAllAndClose(t, replicateResp)
+	if replicateResp.StatusCode != http.StatusCreated {
+		t.Fatalf("replicate request expected 201 bypassing limit, got %d", replicateResp.StatusCode)
+	}
+
+	normalFID := framework.NewFileID(volumeID, 880003, 0x9C0D1E2F)
+	normalReq, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+normalFID, bytes.NewReader([]byte("normal")))
+	if err != nil {
+		t.Fatalf("create normal request: %v", err)
+	}
+	normalReq.Header.Set("Content-Type", "application/octet-stream")
+	normalReq.ContentLength = int64(len("normal"))
+
+	timeoutClient := &http.Client{Timeout: 10 * time.Second}
+	normalResp, err := timeoutClient.Do(normalReq)
+	if err != nil {
+		t.Fatalf("normal upload request failed: %v", err)
+	}
+	_ = framework.ReadAllAndClose(t, normalResp)
+	if normalResp.StatusCode != http.StatusTooManyRequests {
+		t.Fatalf("normal upload expected 429 while limit blocked, got %d", normalResp.StatusCode)
+	}
+
+	close(unblockFirstUpload)
+	select {
+	case <-firstUploadDone:
+	case <-time.After(5 * time.Second):
+		t.Fatalf("timed out waiting for blocked upload to finish")
+	}
+}
+
+func TestUploadLimitWaitThenProceed(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P8())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(111)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	const blockedUploadSize = 2 * 1024 * 1024
+
+	unblockFirstUpload := make(chan struct{})
+	firstUploadDone := make(chan error, 1)
+	firstFID := framework.NewFileID(volumeID, 880601, 0x6A2B3C4D)
+	go func() {
+		req, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+firstFID, &pausableReader{
+			remaining:  blockedUploadSize,
+			pauseAfter: 1,
+			unblock:    unblockFirstUpload,
+		})
+		if err != nil {
+			firstUploadDone <- err
+			return
+		}
+		req.Header.Set("Content-Type", "application/octet-stream")
+		req.ContentLength = blockedUploadSize
+
+		resp, err := (&http.Client{}).Do(req)
+		if resp != nil {
+			_ = framework.ReadAllAndClose(t, resp)
+		}
+		firstUploadDone <- err
+	}()
+
+	time.Sleep(300 * time.Millisecond)
+
+	type uploadResult struct {
+		resp *http.Response
+		err  error
+	}
+	secondUploadDone := make(chan uploadResult, 1)
+	secondFID := framework.NewFileID(volumeID, 880602, 0x6A2B3C4E)
+	go func() {
+		req, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+secondFID, bytes.NewReader([]byte("wait-then-proceed")))
+		if err != nil {
+			secondUploadDone <- uploadResult{err: err}
+			return
+		}
+		req.Header.Set("Content-Type", "application/octet-stream")
+		req.ContentLength = int64(len("wait-then-proceed"))
+		resp, err := (&http.Client{Timeout: 10 * time.Second}).Do(req)
+		secondUploadDone <- uploadResult{resp: resp, err: err}
+	}()
+
+	time.Sleep(500 * time.Millisecond)
+	close(unblockFirstUpload)
+
+	select {
+	case firstErr := <-firstUploadDone:
+		if firstErr != nil {
+			t.Fatalf("first blocked upload failed: %v", firstErr)
+		}
+	case <-time.After(5 * time.Second):
+		t.Fatalf("timed out waiting for first upload completion")
+	}
+
+	select {
+	case result := <-secondUploadDone:
+		if result.err != nil {
+			t.Fatalf("second upload failed: %v", result.err)
+		}
+		_ = framework.ReadAllAndClose(t, result.resp)
+		if result.resp.StatusCode != http.StatusCreated {
+			t.Fatalf("second upload expected 201 after waiting for slot, got %d", result.resp.StatusCode)
+		}
+	case <-time.After(5 * time.Second):
+		t.Fatalf("timed out waiting for second upload completion")
+	}
+}
+
+func TestUploadLimitTimeoutThenRecovery(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P8())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(113)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	const blockedUploadSize = 2 * 1024 * 1024
+
+	unblockFirstUpload := make(chan struct{})
+	firstUploadDone := make(chan error, 1)
+	firstFID := framework.NewFileID(volumeID, 880801, 0x7A2B3C4D)
+	go func() {
+		req, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+firstFID, &pausableReader{
+			remaining:  blockedUploadSize,
+			pauseAfter: 1,
+			unblock:    unblockFirstUpload,
+		})
+		if err != nil {
+			firstUploadDone <- err
+			return
+		}
+		req.Header.Set("Content-Type", "application/octet-stream")
+		req.ContentLength = blockedUploadSize
+		resp, err := (&http.Client{}).Do(req)
+		if resp != nil {
+			_ = framework.ReadAllAndClose(t, resp)
+		}
+		firstUploadDone <- err
+	}()
+
+	time.Sleep(300 * time.Millisecond)
+
+	timeoutFID := framework.NewFileID(volumeID, 880802, 0x7A2B3C4E)
+	timeoutResp := framework.UploadBytes(t, &http.Client{Timeout: 10 * time.Second}, clusterHarness.VolumeAdminURL(), timeoutFID, []byte("should-timeout"))
+	_ = framework.ReadAllAndClose(t, timeoutResp)
+	if timeoutResp.StatusCode != http.StatusTooManyRequests {
+		t.Fatalf("second upload under blocked pressure expected 429, got %d", timeoutResp.StatusCode)
+	}
+
+	close(unblockFirstUpload)
+	select {
+	case firstErr := <-firstUploadDone:
+		if firstErr != nil {
+			t.Fatalf("first blocked upload failed: %v", firstErr)
+		}
+	case <-time.After(5 * time.Second):
+		t.Fatalf("timed out waiting for first upload completion")
+	}
+
+	recoveryFID := framework.NewFileID(volumeID, 880803, 0x7A2B3C4F)
+	recoveryResp := framework.UploadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(), recoveryFID, []byte("recovered-upload"))
+	_ = framework.ReadAllAndClose(t, recoveryResp)
+	if recoveryResp.StatusCode != http.StatusCreated {
+		t.Fatalf("recovery upload expected 201, got %d", recoveryResp.StatusCode)
+	}
+}
+
+func TestDownloadLimitTimeoutReturnsTooManyRequests(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P8())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(99)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	largePayload := make([]byte, 12*1024*1024) // over 1MB P8 download limit
+	for i := range largePayload {
+		largePayload[i] = byte(i % 251)
+	}
+	downloadFID := framework.NewFileID(volumeID, 880101, 0x10203040)
+	uploadResp := framework.UploadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(), downloadFID, largePayload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("large upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	firstResp, err := (&http.Client{}).Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+downloadFID))
+	if err != nil {
+		t.Fatalf("first GET failed: %v", err)
+	}
+	if firstResp.StatusCode != http.StatusOK {
+		_ = framework.ReadAllAndClose(t, firstResp)
+		t.Fatalf("first GET expected 200, got %d", firstResp.StatusCode)
+	}
+	defer firstResp.Body.Close()
+
+	// Keep first response body unread so server write path stays in-flight.
+	time.Sleep(300 * time.Millisecond)
+
+	secondClient := &http.Client{Timeout: 10 * time.Second}
+	secondResp, err := secondClient.Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+downloadFID))
+	if err != nil {
+		t.Fatalf("second GET failed: %v", err)
+	}
+	_ = framework.ReadAllAndClose(t, secondResp)
+	if secondResp.StatusCode != http.StatusTooManyRequests {
+		t.Fatalf("second GET expected 429 while first download holds limit, got %d", secondResp.StatusCode)
+	}
+}
+
+func TestDownloadLimitWaitThenProceedWithoutReplica(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P8())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(112)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	largePayload := make([]byte, 12*1024*1024)
+	for i := range largePayload {
+		largePayload[i] = byte(i % 251)
+	}
+	fid := framework.NewFileID(volumeID, 880701, 0x60708090)
+	uploadResp := framework.UploadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(), fid, largePayload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("large upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	firstResp, err := (&http.Client{}).Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid))
+	if err != nil {
+		t.Fatalf("first GET failed: %v", err)
+	}
+	if firstResp.StatusCode != http.StatusOK {
+		_ = framework.ReadAllAndClose(t, firstResp)
+		t.Fatalf("first GET expected 200, got %d", firstResp.StatusCode)
+	}
+
+	type readResult struct {
+		resp *http.Response
+		err  error
+	}
+	secondReadDone := make(chan readResult, 1)
+	go func() {
+		resp, readErr := (&http.Client{Timeout: 10 * time.Second}).Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid))
+		secondReadDone <- readResult{resp: resp, err: readErr}
+	}()
+
+	time.Sleep(500 * time.Millisecond)
+	_ = firstResp.Body.Close()
+
+	select {
+	case result := <-secondReadDone:
+		if result.err != nil {
+			t.Fatalf("second GET failed: %v", result.err)
+		}
+		secondBody := framework.ReadAllAndClose(t, result.resp)
+		if result.resp.StatusCode != http.StatusOK {
+			t.Fatalf("second GET expected 200 after waiting for slot, got %d", result.resp.StatusCode)
+		}
+		if len(secondBody) != len(largePayload) {
+			t.Fatalf("second GET body size mismatch: got %d want %d", len(secondBody), len(largePayload))
+		}
+	case <-time.After(5 * time.Second):
+		t.Fatalf("timed out waiting for second GET completion")
+	}
+}
+
+func TestDownloadLimitTimeoutThenRecovery(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P8())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(114)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	largePayload := make([]byte, 12*1024*1024)
+	for i := range largePayload {
+		largePayload[i] = byte(i % 251)
+	}
+	fid := framework.NewFileID(volumeID, 880901, 0x708090A0)
+	uploadResp := framework.UploadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(), fid, largePayload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("large upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	firstResp, err := (&http.Client{}).Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid))
+	if err != nil {
+		t.Fatalf("first GET failed: %v", err)
+	}
+	if firstResp.StatusCode != http.StatusOK {
+		_ = framework.ReadAllAndClose(t, firstResp)
+		t.Fatalf("first GET expected 200, got %d", firstResp.StatusCode)
+	}
+
+	time.Sleep(300 * time.Millisecond)
+
+	timeoutResp := framework.ReadBytes(t, &http.Client{Timeout: 10 * time.Second}, clusterHarness.VolumeAdminURL(), fid)
+	_ = framework.ReadAllAndClose(t, timeoutResp)
+	if timeoutResp.StatusCode != http.StatusTooManyRequests {
+		t.Fatalf("second GET under blocked pressure expected 429, got %d", timeoutResp.StatusCode)
+	}
+
+	_ = firstResp.Body.Close()
+
+	recoveryResp := framework.ReadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(), fid)
+	recoveryBody := framework.ReadAllAndClose(t, recoveryResp)
+	if recoveryResp.StatusCode != http.StatusOK {
+		t.Fatalf("recovery GET expected 200, got %d", recoveryResp.StatusCode)
+	}
+	if len(recoveryBody) != len(largePayload) {
+		t.Fatalf("recovery GET body size mismatch: got %d want %d", len(recoveryBody), len(largePayload))
+	}
+}
+
+func TestDownloadLimitOverageProxiesToReplica(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P8()
+	profile.ReadMode = "proxy"
+	clusterHarness := framework.StartDualVolumeCluster(t, profile)
+
+	conn0, grpc0 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer conn0.Close()
+	conn1, grpc1 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(1))
+	defer conn1.Close()
+
+	const volumeID = uint32(100)
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	req := &volume_server_pb.AllocateVolumeRequest{
+		VolumeId:    volumeID,
+		Replication: "001",
+		Version:     uint32(needle.GetCurrentVersion()),
+	}
+	if _, err := grpc0.AllocateVolume(ctx, req); err != nil {
+		t.Fatalf("allocate replicated volume on node0: %v", err)
+	}
+	if _, err := grpc1.AllocateVolume(ctx, req); err != nil {
+		t.Fatalf("allocate replicated volume on node1: %v", err)
+	}
+
+	largePayload := make([]byte, 12*1024*1024)
+	for i := range largePayload {
+		largePayload[i] = byte(i % 251)
+	}
+	fid := framework.NewFileID(volumeID, 880201, 0x0A0B0C0D)
+	uploadResp := framework.UploadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(0), fid, largePayload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("replicated large upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	replicaReadURL := clusterHarness.VolumeAdminURL(1) + "/" + fid
+	if !waitForHTTPStatus(t, framework.NewHTTPClient(), replicaReadURL, http.StatusOK, 10*time.Second, func(resp *http.Response) {
+		_ = framework.ReadAllAndClose(t, resp)
+	}) {
+		t.Fatalf("replica did not become readable within deadline")
+	}
+
+	firstResp, err := (&http.Client{}).Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL(0)+"/"+fid))
+	if err != nil {
+		t.Fatalf("first GET failed: %v", err)
+	}
+	if firstResp.StatusCode != http.StatusOK {
+		_ = framework.ReadAllAndClose(t, firstResp)
+		t.Fatalf("first GET expected 200, got %d", firstResp.StatusCode)
+	}
+	defer firstResp.Body.Close()
+
+	time.Sleep(300 * time.Millisecond)
+
+	secondResp, err := framework.NewHTTPClient().Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL(0)+"/"+fid))
+	if err != nil {
+		t.Fatalf("second GET failed: %v", err)
+	}
+	secondBody := framework.ReadAllAndClose(t, secondResp)
+	if secondResp.StatusCode != http.StatusOK {
+		t.Fatalf("second GET expected 200 via replica proxy fallback, got %d", secondResp.StatusCode)
+	}
+	if len(secondBody) != len(largePayload) {
+		t.Fatalf("second GET proxied body size mismatch: got %d want %d", len(secondBody), len(largePayload))
+	}
+}
+
+func TestDownloadLimitProxiedRequestSkipsReplicaFallbackAndTimesOut(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	profile := matrix.P8()
+	profile.ReadMode = "proxy"
+	clusterHarness := framework.StartDualVolumeCluster(t, profile)
+
+	conn0, grpc0 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(0))
+	defer conn0.Close()
+	conn1, grpc1 := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress(1))
+	defer conn1.Close()
+
+	const volumeID = uint32(106)
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	req := &volume_server_pb.AllocateVolumeRequest{
+		VolumeId:    volumeID,
+		Replication: "001",
+		Version:     uint32(needle.GetCurrentVersion()),
+	}
+	if _, err := grpc0.AllocateVolume(ctx, req); err != nil {
+		t.Fatalf("allocate replicated volume on node0: %v", err)
+	}
+	if _, err := grpc1.AllocateVolume(ctx, req); err != nil {
+		t.Fatalf("allocate replicated volume on node1: %v", err)
+	}
+
+	largePayload := make([]byte, 12*1024*1024)
+	for i := range largePayload {
+		largePayload[i] = byte(i % 251)
+	}
+	fid := framework.NewFileID(volumeID, 880202, 0x0A0B0D0E)
+	uploadResp := framework.UploadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(0), fid, largePayload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("replicated large upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	// Ensure replica path is actually available, so a non-proxied request would proxy.
+	replicaReadURL := clusterHarness.VolumeAdminURL(1) + "/" + fid
+	if !waitForHTTPStatus(t, framework.NewHTTPClient(), replicaReadURL, http.StatusOK, 10*time.Second, func(resp *http.Response) {
+		_ = framework.ReadAllAndClose(t, resp)
+	}) {
+		t.Fatalf("replica did not become readable within deadline")
+	}
+
+	firstResp, err := (&http.Client{}).Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL(0)+"/"+fid))
+	if err != nil {
+		t.Fatalf("first GET failed: %v", err)
+	}
+	if firstResp.StatusCode != http.StatusOK {
+		_ = framework.ReadAllAndClose(t, firstResp)
+		t.Fatalf("first GET expected 200, got %d", firstResp.StatusCode)
+	}
+	defer firstResp.Body.Close()
+
+	time.Sleep(300 * time.Millisecond)
+
+	// proxied=true should bypass replica fallback and hit wait/timeout branch.
+	secondResp, err := framework.NewHTTPClient().Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL(0)+"/"+fid+"?proxied=true"))
+	if err != nil {
+		t.Fatalf("second GET failed: %v", err)
+	}
+	_ = framework.ReadAllAndClose(t, secondResp)
+	if secondResp.StatusCode != http.StatusTooManyRequests {
+		t.Fatalf("second GET with proxied=true expected 429 timeout path, got %d", secondResp.StatusCode)
+	}
+}
+
+func TestUploadLimitDisabledAllowsConcurrentUploads(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(107)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	const blockedUploadSize = 2 * 1024 * 1024
+	unblockFirstUpload := make(chan struct{})
+	firstUploadDone := make(chan error, 1)
+	firstFID := framework.NewFileID(volumeID, 880301, 0x1A2B3C5D)
+	go func() {
+		req, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+firstFID, &pausableReader{
+			remaining:  blockedUploadSize,
+			pauseAfter: 1,
+			unblock:    unblockFirstUpload,
+		})
+		if err != nil {
+			firstUploadDone <- err
+			return
+		}
+		req.Header.Set("Content-Type", "application/octet-stream")
+		req.ContentLength = blockedUploadSize
+
+		resp, err := (&http.Client{}).Do(req)
+		if resp != nil {
+			_ = framework.ReadAllAndClose(t, resp)
+		}
+		firstUploadDone <- err
+	}()
+
+	time.Sleep(300 * time.Millisecond)
+
+	secondFID := framework.NewFileID(volumeID, 880302, 0x1A2B3C5E)
+	secondResp := framework.UploadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(), secondFID, []byte("no-limit-second-upload"))
+	_ = framework.ReadAllAndClose(t, secondResp)
+	if secondResp.StatusCode != http.StatusCreated {
+		t.Fatalf("second upload with disabled limit expected 201, got %d", secondResp.StatusCode)
+	}
+
+	close(unblockFirstUpload)
+	select {
+	case <-firstUploadDone:
+	case <-time.After(5 * time.Second):
+		t.Fatalf("timed out waiting for first upload completion")
+	}
+}
+
+func TestDownloadLimitDisabledAllowsConcurrentDownloads(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(108)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	largePayload := make([]byte, 12*1024*1024)
+	for i := range largePayload {
+		largePayload[i] = byte(i % 251)
+	}
+	fid := framework.NewFileID(volumeID, 880401, 0x20304050)
+	uploadResp := framework.UploadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(), fid, largePayload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("large upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	firstResp, err := (&http.Client{}).Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid))
+	if err != nil {
+		t.Fatalf("first GET failed: %v", err)
+	}
+	if firstResp.StatusCode != http.StatusOK {
+		_ = framework.ReadAllAndClose(t, firstResp)
+		t.Fatalf("first GET expected 200, got %d", firstResp.StatusCode)
+	}
+	defer firstResp.Body.Close()
+
+	time.Sleep(300 * time.Millisecond)
+
+	secondResp := framework.ReadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(), fid)
+	secondBody := framework.ReadAllAndClose(t, secondResp)
+	if secondResp.StatusCode != http.StatusOK {
+		t.Fatalf("second GET with disabled limit expected 200, got %d", secondResp.StatusCode)
+	}
+	if len(secondBody) != len(largePayload) {
+		t.Fatalf("second GET body size mismatch: got %d want %d", len(secondBody), len(largePayload))
+	}
+}
+
+func TestDownloadLimitInvalidVidWhileOverLimitReturnsBadRequest(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P8())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(110)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	largePayload := make([]byte, 12*1024*1024)
+	for i := range largePayload {
+		largePayload[i] = byte(i % 251)
+	}
+	fid := framework.NewFileID(volumeID, 880501, 0x50607080)
+	uploadResp := framework.UploadBytes(t, framework.NewHTTPClient(), clusterHarness.VolumeAdminURL(), fid, largePayload)
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("large upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	firstResp, err := (&http.Client{}).Do(mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid))
+	if err != nil {
+		t.Fatalf("first GET failed: %v", err)
+	}
+	if firstResp.StatusCode != http.StatusOK {
+		_ = framework.ReadAllAndClose(t, firstResp)
+		t.Fatalf("first GET expected 200, got %d", firstResp.StatusCode)
+	}
+	defer firstResp.Body.Close()
+
+	time.Sleep(300 * time.Millisecond)
+
+	invalidReq := mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/not-a-vid,1234567890ab")
+	invalidResp := framework.DoRequest(t, framework.NewHTTPClient(), invalidReq)
+	_ = framework.ReadAllAndClose(t, invalidResp)
+	if invalidResp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("invalid vid while over limit expected 400, got %d", invalidResp.StatusCode)
+	}
+}

test/volume_server/http/write_delete_variants_test.go

@@ -0,0 +1,118 @@
+package volume_server_http_test
+
+import (
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func TestWriteUnchangedAndDeleteEdgeVariants(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(87)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	const key = uint64(999001)
+	const cookie = uint32(0xDEADBEEF)
+	fid := framework.NewFileID(volumeID, key, cookie)
+	client := framework.NewHTTPClient()
+	payload := []byte("unchanged-write-content")
+
+	firstUpload := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	firstUploadResp := framework.DoRequest(t, client, firstUpload)
+	_ = framework.ReadAllAndClose(t, firstUploadResp)
+	if firstUploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("first upload expected 201, got %d", firstUploadResp.StatusCode)
+	}
+
+	secondUpload := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, payload)
+	secondUploadResp := framework.DoRequest(t, client, secondUpload)
+	_ = framework.ReadAllAndClose(t, secondUploadResp)
+	if secondUploadResp.StatusCode != http.StatusNoContent {
+		t.Fatalf("second unchanged upload expected 204, got %d", secondUploadResp.StatusCode)
+	}
+	if secondUploadResp.Header.Get("ETag") == "" {
+		t.Fatalf("second unchanged upload expected ETag header")
+	}
+
+	wrongCookieFid := framework.NewFileID(volumeID, key, cookie+1)
+	wrongCookieDelete := framework.DoRequest(t, client, mustNewRequest(t, http.MethodDelete, clusterHarness.VolumeAdminURL()+"/"+wrongCookieFid))
+	_ = framework.ReadAllAndClose(t, wrongCookieDelete)
+	if wrongCookieDelete.StatusCode != http.StatusBadRequest {
+		t.Fatalf("delete with mismatched cookie expected 400, got %d", wrongCookieDelete.StatusCode)
+	}
+
+	missingDelete := framework.DoRequest(t, client, mustNewRequest(t, http.MethodDelete, clusterHarness.VolumeAdminURL()+"/"+framework.NewFileID(volumeID, key+1, cookie)))
+	missingDeleteBody := framework.ReadAllAndClose(t, missingDelete)
+	if missingDelete.StatusCode != http.StatusNotFound {
+		t.Fatalf("delete missing needle expected 404, got %d", missingDelete.StatusCode)
+	}
+
+	var payloadMap map[string]int64
+	if err := json.Unmarshal(missingDeleteBody, &payloadMap); err != nil {
+		t.Fatalf("decode delete missing response: %v", err)
+	}
+	if payloadMap["size"] != 0 {
+		t.Fatalf("delete missing needle expected size=0, got %d", payloadMap["size"])
+	}
+}
+
+func TestDeleteTimestampOverrideKeepsReadDeletedLastModifiedParity(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(88)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 999002, 0xABCD1234)
+	uploadResp := framework.UploadBytes(t, client, clusterHarness.VolumeAdminURL(), fid, []byte("delete-ts-override"))
+	_ = framework.ReadAllAndClose(t, uploadResp)
+	if uploadResp.StatusCode != http.StatusCreated {
+		t.Fatalf("upload expected 201, got %d", uploadResp.StatusCode)
+	}
+
+	beforeDeleteResp := framework.ReadBytes(t, client, clusterHarness.VolumeAdminURL(), fid)
+	_ = framework.ReadAllAndClose(t, beforeDeleteResp)
+	if beforeDeleteResp.StatusCode != http.StatusOK {
+		t.Fatalf("pre-delete read expected 200, got %d", beforeDeleteResp.StatusCode)
+	}
+	lastModifiedBeforeDelete := beforeDeleteResp.Header.Get("Last-Modified")
+	if lastModifiedBeforeDelete == "" {
+		t.Fatalf("expected Last-Modified before delete")
+	}
+
+	deleteReq := mustNewRequest(t, http.MethodDelete, clusterHarness.VolumeAdminURL()+"/"+fid+"?ts=1700000000")
+	deleteResp := framework.DoRequest(t, client, deleteReq)
+	_ = framework.ReadAllAndClose(t, deleteResp)
+	if deleteResp.StatusCode != http.StatusAccepted {
+		t.Fatalf("delete with ts override expected 202, got %d", deleteResp.StatusCode)
+	}
+
+	readDeletedResp := framework.DoRequest(t, client, mustNewRequest(t, http.MethodGet, clusterHarness.VolumeAdminURL()+"/"+fid+"?readDeleted=true"))
+	_ = framework.ReadAllAndClose(t, readDeletedResp)
+	if readDeletedResp.StatusCode != http.StatusOK {
+		t.Fatalf("readDeleted after ts override expected 200, got %d", readDeletedResp.StatusCode)
+	}
+	lastModified := readDeletedResp.Header.Get("Last-Modified")
+	if lastModified == "" {
+		t.Fatalf("expected Last-Modified header on readDeleted response")
+	}
+	if lastModified != lastModifiedBeforeDelete {
+		t.Fatalf("expected readDeleted Last-Modified parity with pre-delete header, got %q want %q", lastModified, lastModifiedBeforeDelete)
+	}
+}

test/volume_server/http/write_error_variants_test.go

@@ -0,0 +1,74 @@
+package volume_server_http_test
+
+import (
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/seaweedfs/seaweedfs/test/volume_server/framework"
+	"github.com/seaweedfs/seaweedfs/test/volume_server/matrix"
+)
+
+func TestWriteInvalidVidAndFidReturnBadRequest(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	client := framework.NewHTTPClient()
+
+	invalidVidReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/invalid,12345678", []byte("x"))
+	invalidVidResp := framework.DoRequest(t, client, invalidVidReq)
+	_ = framework.ReadAllAndClose(t, invalidVidResp)
+	if invalidVidResp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("write with invalid vid expected 400, got %d", invalidVidResp.StatusCode)
+	}
+
+	invalidFidReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/1,bad", []byte("x"))
+	invalidFidResp := framework.DoRequest(t, client, invalidFidReq)
+	_ = framework.ReadAllAndClose(t, invalidFidResp)
+	if invalidFidResp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("write with invalid fid expected 400, got %d", invalidFidResp.StatusCode)
+	}
+}
+
+func TestWriteMalformedMultipartAndMD5Mismatch(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test in short mode")
+	}
+
+	clusterHarness := framework.StartSingleVolumeCluster(t, matrix.P1())
+	conn, grpcClient := framework.DialVolumeServer(t, clusterHarness.VolumeGRPCAddress())
+	defer conn.Close()
+
+	const volumeID = uint32(98)
+	framework.AllocateVolume(t, grpcClient, volumeID, "")
+
+	client := framework.NewHTTPClient()
+	fid := framework.NewFileID(volumeID, 772001, 0x1A2B3C4D)
+
+	malformedMultipartReq, err := http.NewRequest(http.MethodPost, clusterHarness.VolumeAdminURL()+"/"+fid, strings.NewReader("not-a-valid-multipart-body"))
+	if err != nil {
+		t.Fatalf("create malformed multipart request: %v", err)
+	}
+	malformedMultipartReq.Header.Set("Content-Type", "multipart/form-data")
+	malformedMultipartResp := framework.DoRequest(t, client, malformedMultipartReq)
+	malformedMultipartBody := framework.ReadAllAndClose(t, malformedMultipartResp)
+	if malformedMultipartResp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("malformed multipart write expected 400, got %d", malformedMultipartResp.StatusCode)
+	}
+	if !strings.Contains(strings.ToLower(string(malformedMultipartBody)), "boundary") {
+		t.Fatalf("malformed multipart response should mention boundary parse failure, got %q", string(malformedMultipartBody))
+	}
+
+	md5MismatchReq := newUploadRequest(t, clusterHarness.VolumeAdminURL()+"/"+fid, []byte("content-md5-mismatch-body"))
+	md5MismatchReq.Header.Set("Content-MD5", "AAAAAAAAAAAAAAAAAAAAAA==")
+	md5MismatchResp := framework.DoRequest(t, client, md5MismatchReq)
+	md5MismatchBody := framework.ReadAllAndClose(t, md5MismatchResp)
+	if md5MismatchResp.StatusCode != http.StatusBadRequest {
+		t.Fatalf("content-md5 mismatch write expected 400, got %d", md5MismatchResp.StatusCode)
+	}
+	if !strings.Contains(string(md5MismatchBody), "Content-MD5") {
+		t.Fatalf("content-md5 mismatch response should mention Content-MD5, got %q", string(md5MismatchBody))
+	}
+}

test/volume_server/matrix/config_profiles.go

@@ -0,0 +1,63 @@
+package matrix
+
+import "time"
+
+// Profile describes one runtime test matrix configuration.
+type Profile struct {
+	Name string
+
+	ReadMode        string
+	SplitPublicPort bool
+
+	EnableJWT      bool
+	JWTSigningKey  string
+	JWTReadKey     string
+	EnableMaintain bool
+
+	ConcurrentUploadLimitMB   int
+	ConcurrentDownloadLimitMB int
+	InflightUploadTimeout     time.Duration
+	InflightDownloadTimeout   time.Duration
+
+	ReplicatedLayout bool
+	HasErasureCoding bool
+	HasRemoteTier    bool
+}
+
+// P1 is the baseline profile: one volume server, no JWT, proxy read mode.
+func P1() Profile {
+	return Profile{
+		Name:            "P1",
+		ReadMode:        "proxy",
+		SplitPublicPort: false,
+	}
+}
+
+// P2 uses split public/admin ports to verify public read-only behavior.
+func P2() Profile {
+	p := P1()
+	p.Name = "P2"
+	p.SplitPublicPort = true
+	return p
+}
+
+// P3 enables JWT verification for read/write flows.
+func P3() Profile {
+	p := P1()
+	p.Name = "P3"
+	p.EnableJWT = true
+	p.JWTSigningKey = "volume-server-write-key"
+	p.JWTReadKey = "volume-server-read-key"
+	return p
+}
+
+// P8 enables upload/download throttling branches.
+func P8() Profile {
+	p := P1()
+	p.Name = "P8"
+	p.ConcurrentUploadLimitMB = 1
+	p.ConcurrentDownloadLimitMB = 1
+	p.InflightUploadTimeout = 2 * time.Second
+	p.InflightDownloadTimeout = 2 * time.Second
+	return p
+}