filer: etcd store fix listing

fix https://github.com/chrislusf/seaweedfs/issues/1767

docker/Makefile

@@ -30,5 +30,8 @@ cluster: build
 2clusters: build
 	docker-compose -f local-clusters-compose.yml -p seaweedfs up
 
+filer_etcd: build
+	docker stack deploy -c swarm-etcd.yml fs
+
 clean:
 	rm ./weed

docker/swarm-etcd.yml

@@ -0,0 +1,84 @@
+# 2021-01-30 16:25:30
+version: '3.8'
+
+services:
+
+  etcd:
+    image: gasparekatapy/etcd
+    networks:
+      - net
+    deploy:
+      mode: replicated
+      replicas: 3
+
+  master:
+    image: chrislusf/seaweedfs:local
+    environment:
+      WEED_MASTER_FILER_DEFAULT: "filer:8888"
+      WEED_MASTER_SEQUENCER_TYPE: "raft"
+    ports:
+      - "9333:9333"
+      - "19333:19333"
+    networks:
+      - net
+    command:
+      - 'master'
+      - '-resumeState=true'
+      - '-ip=master'
+      - '-port=9333'
+    deploy:
+      mode: replicated
+      replicas: 1
+
+  filer:
+    image: chrislusf/seaweedfs:local
+    environment:
+      WEED_LEVELDB2_ENABLED: "false"
+      WEED_ETCD_ENABLED: "true"
+      WEED_ETCD_SERVERS: "etcd:2379"
+    ports:
+      - target: 8888
+        published: 8888
+        protocol: tcp
+        mode: host
+      - target: 18888
+        published: 18888
+        protocol: tcp
+        mode: host
+    networks:
+      - net
+    command:
+      - 'filer'
+      - '-ip=filer'
+      - '-port=8888'
+      - '-port.readonly=28888'
+      - '-master=master:9333'
+      - '-disableDirListing=true'
+    deploy:
+      mode: replicated
+      replicas: 1
+
+  volume:
+    image: chrislusf/seaweedfs:local
+    ports:
+      - target: 8080
+        published: 8080
+        protocol: tcp
+        mode: host
+      - target: 18080
+        published: 18080
+        protocol: tcp
+        mode: host
+    networks:
+      - net
+    command:
+      - 'volume'
+      - '-mserver=master:9333'
+      - '-port=8080'
+    deploy:
+      mode: global
+
+  ###########################################################################
+
+networks:
+  net:

weed/filer/etcd/etcd_store.go

@@ -1,6 +1,7 @@
 package etcd
 
 import (
+	"bytes"
 	"context"
 	"fmt"
 	"strings"
@@ -145,14 +146,21 @@ func (store *EtcdStore) ListDirectoryPrefixedEntries(ctx context.Context, dirPat
 
 func (store *EtcdStore) ListDirectoryEntries(ctx context.Context, dirPath weed_util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) {
 	directoryPrefix := genDirectoryKeyPrefix(dirPath, "")
+	lastFileStart := directoryPrefix
+	if startFileName != "" {
+		lastFileStart = genDirectoryKeyPrefix(dirPath, startFileName)
+	}
 
-	resp, err := store.client.Get(ctx, string(directoryPrefix),
+	resp, err := store.client.Get(ctx, string(lastFileStart),
 		clientv3.WithPrefix(), clientv3.WithSort(clientv3.SortByKey, clientv3.SortDescend))
 	if err != nil {
 		return lastFileName, fmt.Errorf("list %s : %v", dirPath, err)
 	}
 
 	for _, kv := range resp.Kvs {
+		if !bytes.HasPrefix(kv.Key, directoryPrefix) {
+			break
+		}
 		fileName := getNameFromKey(kv.Key)
 		if fileName == "" {
 			continue
@@ -160,7 +168,6 @@ func (store *EtcdStore) ListDirectoryEntries(ctx context.Context, dirPath weed_u
 		if fileName == startFileName && !includeStartFile {
 			continue
 		}
-		lastFileName = fileName
 		limit--
 		if limit < 0 {
 			break
@@ -176,6 +183,7 @@ func (store *EtcdStore) ListDirectoryEntries(ctx context.Context, dirPath weed_u
 		if !eachEntryFunc(entry) {
 			break
 		}
+		lastFileName = fileName
 	}
 
 	return lastFileName, err