Tree: ba74185700

add-ec-vacuum

add_fasthttp_client

add_remote_storage

adding-message-queue-integration-tests

adjust-fsck-cutoff-default

also-delete-parent-directory-if-empty

avoid_releasing_temp_file_on_write

changing-to-zap

collect-public-metrics

copilot/fix-helm-chart-installation

copilot/fix-s3-object-tagging-issue

copilot/make-renew-interval-configurable

copilot/make-renew-interval-configurable-again

copilot/sub-pr-7677

create-table-snapshot-api-design

data_query_pushdown

dependabot/maven/other/java/client/com.google.protobuf-protobuf-java-3.25.5

dependabot/maven/other/java/examples/org.apache.hadoop-hadoop-common-3.4.0

detect-and-plan-ec-tasks

do-not-retry-if-error-is-NotFound

ec-disk-type-support

enhance-erasure-coding

fasthttp

feature/mini-port-detection

feature/modernize-s3-tests

filer1_maintenance_branch

fix-GetObjectLockConfigurationHandler

fix-bucket-name-case-7910

fix-helm-fromtoml-compatibility

fix-mount-http-parallelism

fix-mount-read-throughput-7504

fix-pr-7909

fix-s3-configure-consistency

fix-s3-object-tagging-issue-7589

fix-sts-session-token-7941

fix-versioning-listing-only

ftp

gh-pages

improve-fuse-mount

improve-fuse-mount2

logrus

master

master-split-brain-protection

message_send

mount2

mq-subscribe

mq2

nfs-cookie-prefix-list-fixes

optimize-delete-lookups

original_weed_mount

pr-7412

pr/7984

raft-dual-write

random_access_file

refactor-needle-read-operations

refactor-volume-write

remote_overlay

remove-implicit-directory-handling

revert-5134-patch-1

revert-5819-patch-1

revert-6434-bugfix-missing-s3-audit

s3-remote-cache-singleflight

s3-select

sub

tcp_read

test-reverting-lock-table

test_udp

testing

testing-sdx-generation

tikv

track-mount-e2e

upgrade-versions-to-4.00

volume_buffered_writes

worker-execute-ec-tasks

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dev

helm-3.65.1

v0.69

v0.70beta

v3.33

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Commit Graph

1 Commits (ba7418570039c911bfb06e952fca5bea8e94275d)

Author	SHA1	Message	Date
Chris Lu	4aa50bfa6a	fix: EC rebalance fails with replica placement 000 (#7812) * fix: EC rebalance fails with replica placement 000 This PR fixes several issues with EC shard distribution: 1. Pre-flight check before EC encoding - Verify target disk type has capacity before encoding starts - Prevents encoding shards only to fail during rebalance - Shows helpful error when wrong diskType is specified (e.g., ssd when volumes are on hdd) 2. Fix EC rebalance with replica placement 000 - When DiffRackCount=0, shards should be distributed freely across racks - The '000' placement means 'no volume replication needed' because EC provides redundancy - Previously all racks were skipped with error 'shards X > replica placement limit (0)' 3. Add unit tests for EC rebalance slot calculation - TestECRebalanceWithLimitedSlots: documents the limited slots scenario - TestECRebalanceZeroFreeSlots: reproduces the 0 free slots error 4. Add Makefile for manual EC testing - make setup: start cluster and populate data - make shell: open weed shell for EC commands - make clean: stop cluster and cleanup * fix: default -rebalance to true for ec.encode The -rebalance flag was defaulting to false, which meant ec.encode would only print shard moves but not actually execute them. This is a poor default since the whole point of EC encoding is to distribute shards across servers for fault tolerance. Now -rebalance defaults to true, so shards are actually distributed after encoding. Users can use -rebalance=false if they only want to see what would happen without making changes. * test/erasure_coding: improve Makefile safety and docs - Narrow pkill pattern for volume servers to use TEST_DIR instead of port pattern, avoiding accidental kills of unrelated SeaweedFS processes - Document external dependencies (curl, jq) in header comments * shell: refactor buildRackWithEcShards to reuse buildEcShards Extract common shard bit construction logic to avoid duplication between buildEcShards and buildRackWithEcShards helper functions. * shell: update test for EC replication 000 behavior When DiffRackCount=0 (replication "000"), EC shards should be distributed freely across racks since erasure coding provides its own redundancy. Update test expectation to reflect this behavior. * erasure_coding: add distribution package for proportional EC shard placement Add a new reusable package for EC shard distribution that: - Supports configurable EC ratios (not hard-coded 10+4) - Distributes shards proportionally based on replication policy - Provides fault tolerance analysis - Prefers moving parity shards to keep data shards spread out Key components: - ECConfig: Configurable data/parity shard counts - ReplicationConfig: Parsed XYZ replication policy - ECDistribution: Target shard counts per DC/rack/node - Rebalancer: Plans shard moves with parity-first strategy This enables seaweed-enterprise custom EC ratios and weed worker integration while maintaining a clean, testable architecture. * shell: integrate distribution package for EC rebalancing Add shell wrappers around the distribution package: - ProportionalECRebalancer: Plans moves using distribution.Rebalancer - NewProportionalECRebalancerWithConfig: Supports custom EC configs - GetDistributionSummary/GetFaultToleranceAnalysis: Helper functions The shell layer converts between EcNode types and the generic TopologyNode types used by the distribution package. * test setup * ec: improve data and parity shard distribution across racks - Add shardsByTypePerRack helper to track data vs parity shards - Rewrite doBalanceEcShardsAcrossRacks for two-pass balancing: 1. Balance data shards (0-9) evenly, max ceil(10/6)=2 per rack 2. Balance parity shards (10-13) evenly, max ceil(4/6)=1 per rack - Add balanceShardTypeAcrossRacks for generic shard type balancing - Add pickRackForShardType to select destination with room for type - Add unit tests for even data/parity distribution verification This ensures even read load during normal operation by spreading both data and parity shards across all available racks. * ec: make data/parity shard counts configurable in ecBalancer - Add dataShardCount and parityShardCount fields to ecBalancer struct - Add getDataShardCount() and getParityShardCount() methods with defaults - Replace direct constant usage with configurable methods - Fix unused variable warning for parityPerRack This allows seaweed-enterprise to use custom EC ratios while defaulting to standard 10+4 scheme. * Address PR 7812 review comments Makefile improvements: - Save PIDs for each volume server for precise termination - Use PID-based killing in stop target with pkill fallback - Use more specific pkill patterns with TEST_DIR paths Documentation: - Document jq dependency in README.md Rebalancer fix: - Fix duplicate shard count updates in applyMovesToAnalysis - All planners (DC/rack/node) update counts inline during planning - Remove duplicate updates from applyMovesToAnalysis to avoid double-counting * test/erasure_coding: use mktemp for test file template Use mktemp instead of hardcoded /tmp/testfile_template.bin path to provide better isolation for concurrent test runs.	4 weeks ago