Commit Graph
27 Commits
Author SHA1 Message Date
Chris LuandGitHub 8714f42abf erasure_coding: share the EC shard teardown primitive (#10740)
The unmount+full-teardown of EC shards was duplicated: the plugin-worker EC
task had unmountAndDeleteEcShards and the shell had unmountAndDeleteEcShardsQuiet,
byte-identical apart from a fence parameter and a sentinel error. That
duplication is how the teardown fence semantics drifted between the two paths.

Distribute, mount and verify already live in weed/storage/erasure_coding and are
shared by both callers; move the teardown there too, as UnmountAndDeleteEcShards
plus the shared ErrFullTeardownNotAcked sentinel. Both paths now call the one
function, so the fence semantics cannot diverge again. The shell keeps a thin
type-converting wrapper and aliases the sentinel; behavior is unchanged.
2026-08-13 10:37:25 -07:00
Chris LuandGitHub 6408f32232 EC worker: clear stale/interrupted shards at task start and on failure (#10738)
* EC worker: clear stale/interrupted shards at task start and on failure

The EC encode task cleared stale shards from a prior interrupted encode only
at 55% progress (after mark-readonly, copy, and generate), and used a
generation-fenced teardown. Two gaps left orphan shards behind:

  - a retried encode's prior attempt carries the same admin-issued encodeTsNs,
    and the server's teardown fence preserves same-or-newer generations, so the
    prior attempt's shards were never cleared;
  - shards left by an interrupted distribute often have an unreadable .vif
    generation (the sidecar never landed), which the fence also preserves.

Both survive the next volume-server restart as orphans and make detection
refuse the volume (Manual intervention required).

Move the cleanup to a Step 0 preflight that runs before any destructive step,
and switch it to the server's blanket (generation-independent) teardown -- the
same wipe the shell ec.encode pre-cleanup uses. The admin dedupe key already
prevents a concurrent newer encode of the volume, and the blanket path aborts
rather than clobber a live newer mount.

Add rollbackDistribute: a failure after distribute begins but before verify
commits the EC copy now tears down the shards it wrote and restores the sources
to writable, so a terminally-failed encode (a single-attempt job, or the last
of a retry series, which has no successor preflight) leaves nothing behind.

The preflight also rejects a plan with no targets or no source before marking
the source readonly.

* EC worker: reject malformed targets and keep source readonly on incomplete teardown

Address review feedback:

- ensureCleanEcStart only rejected an empty target slice; a target with an
  empty Node (or no shard ids) passed the length check, was then silently
  skipped by cleanupStaleEcShards, and let Execute mark the source readonly
  with nothing to distribute to. Validate each target before the first
  destructive step. Add regression cases.

- rollbackDistribute marked the source writable even when the shard teardown
  returned an error, exposing a writable source beside stale (possibly mounted)
  shards -- reads/writes could diverge and orphan cleanup will not remove a
  writable source. On an incomplete teardown, leave the source readonly for the
  next preflight or an operator to reconcile.
2026-08-13 10:25:48 -07:00
Chris LuandGitHub 5a54beac80 EC decode: read shards with the encode-time block layout (#10385)
* erasure_coding: WriteDatFile takes the encode-time dat size for the shard block layout

* volume server: derive EC decode layout from the encode-time dat size, not the live extent

* erasure_coding: test decode after tail deletions shrink the live extent below a large-block row

* seaweed-volume: write_dat_file_from_shards takes the encode-time dat size for the shard block layout

* seaweed-volume: derive EC decode layout from the encode-time dat size, not the live extent

* seaweed-volume: test decode after tail deletions shrink the live extent below a large-block row

* erasure_coding: reject decoding with no data shards

* worker: record the encode-time dat size in the .vif

* erasure_coding: fall back to the shard-derived layout only when the encode-time dat size is missing

* erasure_coding: reject an ambiguous shard-derived block layout

* seaweed-volume: fall back to the shard-derived layout only when the encode-time dat size is missing

* seaweed-volume: reject an ambiguous shard-derived block layout
2026-07-21 08:59:14 -07:00
42ccfc0763 refactor: 将fmt.Errorf中的%v替换为%w以保留错误链 (#10050)
替换了多个文件中的错误格式化方式,使用%w包裹原始错误,
保留完整的错误调用链以提升调试时的错误追踪能力。

Co-authored-by: guant <guant@chinaunicom.cn>
2026-06-22 21:31:45 -07:00
55a54574af fix: use %w instead of %v in fmt.Errorf to preserve error chain (#10047)
In ec_task.go, 23 fmt.Errorf calls used %v verb to wrap errors,
breaking the error chain introduced in Go 1.13. This prevents
callers from using errors.Is() and errors.As() to inspect the
underlying error type.

Changed all fmt.Errorf calls from %v to %w to properly wrap
errors, preserving the error chain for upstream callers.

Note: glog.* logging calls and fmt.Sprintf calls intentionally
keep %v as they are not error wrapping contexts.

Co-authored-by: 吴奇臻 <wuqizhen@cmict.chinamobile.com>
2026-06-22 20:30:37 -07:00
Chris LuandGitHub 284796c7b6 fix(ec): fence stale-worker EC shard cleanup by encode generation (#9953)
* feat(ec): add encode_ts_ns to the EC task params, shard-unmount, and shard-delete RPCs

The generation fence for stale EC-worker cleanup needs the encode
generation on three messages: ErasureCodingTaskParams (admin issues it),
VolumeEcShardsUnmountRequest, and VolumeEcShardsDeleteRequest (the worker
carries it to the volume server). Additive fields only; 0 preserves the
existing unfenced behavior. Mirror the two volume-server fields in the
Rust volume server's proto copy.

* feat(ec): issue the EC encode generation from the admin and carry it on the worker

Stamp each EC proposal's encode_ts_ns from the admin's per-cycle
DetectionSequence (a single-clock value) so generations are globally
ordered even though detection runs on a rotating worker. The worker
writes that generation into the distributed .vif and passes it on its
shard unmount/delete RPCs; it falls back to a local timestamp for the
.vif only on the unfenced legacy/shell path (keeping the read guard on).

* fix(ec): fence the stale-worker EC shard unmount and teardown by generation

A reaped-but-still-running EC worker's cleanupStaleEcShards issued a
generation-blind unmount + full teardown that could unmount and then
overwrite a newer run's live shards on a shared node. Both RPCs now
carry the encode generation: the volume server unmounts/deletes a disk
only when its .vif generation is strictly older than the request, and
preserves a same-or-newer generation, a generation-0 (recovered or
pre-upgrade) volume, and an unreadable .vif. Unload is per-disk, never
node-wide. Request generation 0 keeps the blanket teardown for the shell
pre-encode cleanup and pre-upgrade callers. Mirrored in the Rust volume
server.

* test(ec): cover the generation-fenced teardown and unmount

End-to-end volume-server tests: a fenced FullTeardown wipes a strictly-
older generation, preserves a newer one, preserves a generation-0 volume,
and blanket-wipes on request generation 0; the gen-aware unmount preserves
a same-or-newer mounted generation; and the .vif generation reader handles
present/absent/no-config cases.

* test(ec): pin the fenced .vif==teardown generation and the unreadable-.vif preserve

A fenced run must stamp the admin generation verbatim into the .vif so it
matches the generation sent on the teardown RPCs; add a regression test
that sets the task generation and asserts the .vif carries it exactly.
Also cover the present-but-unparseable .vif case (reads as generation 0,
preserved) and correct the readEcGenerationTsNs docstring accordingly.

* fix(ec): surface EC full-teardown filesystem errors in the Rust volume server

remove_ec_volume_files(_full_teardown) discarded every fs::remove_file
error, so a teardown that failed on permissions or a full disk still
returned full_teardown_done=true and left stale artifacts to collide with
the next encode. Return io::Result, ignore NotFound, propagate the first
real error, and have the teardown RPC surface it -- matching the Go
contract. The best-effort reconcile/load-cleanup callers keep ignoring it.

* refactor(ec): reuse the EC volume lookup on unmount and short-circuit the gen read

Address review: the Rust unmount fence reuses the ec_vol it already
fetched instead of a second find_ec_volume; the Go .vif generation reader
breaks out of the data/idx loop early when the two dirs are the same.
2026-06-14 01:54:04 -07:00
Chris LuandGitHub 240f82d6d2 fix(ec): persist EC source readonly mark and skip writable replicas on orphan cleanup (#9950)
* fix(ec): persist the EC source replica readonly mark

markReplicasReadonly marked each regular replica readonly without
persisting it, so a source-server restart during or after encoding
silently reopened the volume to writes. Those writes are not in the EC
shards, and the later orphan-source cleanup would then delete the
replica, losing them. Send Persist:true so the mark survives a restart;
rollbackReadonly still clears it via VolumeMarkWritable on a failed
encode.

* fix(ec): don't delete a writable source replica during orphan cleanup

cleanupOrphanSourceReplicas issued VolumeDelete to every regular replica
once the EC shard set looked complete, without checking the replica's
current state. A replica that came back writable may hold writes the EC
shards do not contain, so deleting it loses data. Re-probe each replica
via VolumeStatus and skip any that is no longer readonly, logging a
warning instead of deleting.
2026-06-13 21:26:16 -07:00
Chris LuandGitHub 34f9b91d69 fix(storage): never let an empty .dat delete healthy distributed EC shards (#9930)
* fix(storage): never let an empty .dat delete healthy distributed EC shards

A leftover empty .dat stub (a phantom from the pre-fix loader; zero
needles) next to a distributed EC volume's local shards made startup
classify the volume as an interrupted local encode: validateEcVolume
requires >= dataShards local shards when a .dat is present, fails with
the 1-2 shards a distributed volume keeps per disk, and the cleanup
deletes those shards -- the only copies of that part of the volume.
Repeated across restart waves this destroys enough shards cluster-wide
to make the volume unrecoverable.

Go:
- loadExistingVolume: hoist the empty-stub sweep above the EC presence
  checks. Previously the .vif-next-to-.ecx guard returned before the
  sweep ever ran, so exactly the dangerous layout (stub + .ecx + local
  shards) kept its stub and then lost its shards in loadAllEcShards.
- validateEcVolume / checkDatFileExists: treat a .dat <= a superblock
  (zero needles) as absent. An empty .dat cannot be the encode source,
  so it must never gate shard deletion; this also covers stubs without
  a .vif, which the sweep cannot prove are EC leftovers.

Rust mirror (seaweed-volume): the same gate in validate_ec_volume and
check_dat_file_exists (the Rust sweep already ran before validation);
the volume-load skip keeps a plain existence check so fresh,
needle-less volumes still load.

Regression tests in Go and Rust reproduce the production layout (a
zero-byte .dat beside .ecx/.ecj and two shards of a 10+4 volume, with
and without a .vif) and fail without the fix with the shards deleted.

* fix(ec): gate source volume deletion on a recoverable shard set

After EC encode, the shell command and the (plugin) worker task refused
to delete the source volume unless every shard was present, and aborted
otherwise -- leaving the source .dat next to live shards, exactly the
mixed state the startup cleanup mishandles.

Replace the full-set requirement with a recoverability gate shared by
both callers (RequireRecoverableShardSet): deleting a non-empty source
.dat requires at least dataShards distinct shards cluster-wide. Below
that the source is kept and the encode fails as before. A degraded but
recoverable set (>= dataShards, < total) now proceeds with a warning
instead of aborting: the missing shards can be rebuilt from the
survivors, while keeping the source would preserve the dangerous mixed
state. Empty stub replicas are still swept unguarded (OnlyEmpty) -- an
empty .dat has nothing to lose.

dataShards/totalShards stay parameters so enterprise custom EC ratios
share the helper verbatim.

* test(ec): use recoverable shard verification gate
2026-06-11 20:26:20 -07:00
Chris LuandGitHub 79ac279fe1 fix(ec): don't mix EC shards from different encode runs (#9880)
* feat(ec): add encode_ts_ns to EC shard metadata and the shard read RPC

EcShardConfig and VolumeEcShardReadRequest gain an int64 encode_ts_ns
(encode time in unix nanos). It rides in .vif and the read request so a
read can be scoped to the encode run that produced the index.

* fix(ec): stamp each encode and reject cross-run shard reads

Generate stamps EncodeTsNs into the volume's .vif. Reads carry it to the
shard's owning volume (resolved together via FindEcVolumeWithShard, so a
multi-disk server validates the disk that actually serves the bytes) and
reject a shard from a different encode run, recovering from parity. A
zero on either side (pre-upgrade volume) skips the guard.

* fix(ec): stamp the encode identity on the worker-generated .vif

The worker-local encode path now writes EncodeTsNs (and the resolved EC
ratio) into the .vif, so the read guard is not silently off for volumes
encoded by the maintenance worker.

* fix(ec): wipe stale EC artifacts before re-encoding

VolumeEcShardsGenerate evicts any in-memory EcVolume for the volume and
removes its on-disk shard/index/sidecar files before writing fresh ones,
so a retried encode never builds on a partial prior run and the unlink
frees the inodes instead of leaving open fds serving old bytes.

* fix(ec): unmount EC shards across all disks

UnmountEcShards walked only the first disk holding the shard, leaving a
duplicate copy mounted on a sibling disk (split-disk reconciled volumes)
still serving and heartbeating. Traverse every disk and emit one
deletion delta per disk.

* fix(ec): delete orphan shards without a local .ecx

deleteEcShardIdsForEachLocation gated shard-file removal on a local .ecx,
so it could not clean an orphan .ecNN left by a failed copy on a disk
with no index. Delete the requested shard files unconditionally; the
index-file (.ecx/.ecj/.vif) routing stays gated as before.

* fix(ec): clear stale EC shards cluster-wide before re-encoding

ec.encode unmounts and deletes EC shards for the target volumes on every
node before regenerating: fatal for the shards the topology reports
(mounted leftovers), best-effort for the rest (a sweep that catches
unmounted failed-copy orphans). A down node is a no-op.

* fix(ec): don't nil EC fds on close so reads can't race eviction

A reader resolves an EcVolume/shard under the lock then reads after it is
released, so an eviction that nils ecxFile/ecdFile would race that read
and panic. Close the fds without nilling the fields: the field is now
write-once (no data race) and a concurrent read hits a closed fd, getting
a clean error that the caller recovers from parity.

* fix(ec): wipe stale EC artifacts on every disk and surface failures

The pre-encode wipe only deleted beside the source volume, so a stale
shard on a sibling disk survived and could be mounted against the new
index at reconcile. Sweep every disk. Removal also ignored os.Remove
errors, reporting a failed cleanup as success and letting a stale shard
join the next generation; surface the first real failure (treating
already-gone as success) from removeStaleEcArtifacts and the shard delete.

* fix(ec): log when a local shard is skipped for a different encode run

The cross-run guard returned errShardNotLocal, indistinguishable in logs
from a genuinely-absent shard. Add a V(1) line naming both EncodeTsNs so
operators can tell "wrong encode generation" from "shard not here".

* fix(ec): surface metadata removal failures in the shard delete path

deleteEcShardIdsForEachLocation still dropped os.Remove errors on the
.ecx/.ecj/.vif/sidecar cleanup. A surviving stale .ecx is the orphan-index
condition this path prevents, so route those through removeFileIfExists and
return the first real failure instead of reporting cleanup as success.

* fix(ec): fail orphan cleanup when a reachable node's delete fails

The pre-encode orphan sweep swallowed every error for unreported (node,
volume) pairs. That is only safe for an unreachable node, which cannot
receive this encode's new generation. A reachable node whose delete
genuinely failed (permission/IO) keeps an orphan shard that a later copy
re-stamps with the new run's volume-level .vif identity, so the read guard
would accept stale data. Surface those; stay best-effort only for
unreachable nodes (gRPC Unavailable / no status).

* fix(ec): guard ecjFile under its lock in the EC delete path

EcVolume.Close nils ecjFile under ecjFileAccessLock; a delete that resolved
its .ecx lookup before a concurrent eviction (the generate-time
UnloadEcVolume) could then reach the journal append with a nil fd. Bail
with a clear "volume closed" error under the lock instead.

* fix(ec): reject an unstamped shard when the caller has an encode identity

The read guard required both identities nonzero, so a current (stamped)
caller accepted a holder with identity 0 and could be served a stale
pre-upgrade shard. Reject when the caller is stamped and the holder
differs (including unstamped); stay lenient only when the caller itself
has no identity (pre-upgrade reader). A skipped shard recovers from parity.

* fix(ec): full-teardown delete so cluster cleanup wipes a whole generation

The pre-encode cluster sweep deleted only the listed canonical shards on
remote nodes, leaving index/sidecar (and, on builds with versioned
generations, those too) behind. Add a full_teardown flag to
VolumeEcShardsDelete that evicts the volume and wipes every EC artifact for
it on every disk via removeStaleEcArtifacts; the shell and worker pre-encode
cleanup paths set it. Other delete callers (balance/decode/repair) are
unchanged.

* fix(ec): take ecjFileAccessLock before the nil-check in Sync and Close

Sync and Close read ev.ecjFile before acquiring ecjFileAccessLock while
Close nils it under the lock, a data race on the field. Take the lock
first, then nil-check inside, in both.

* fix(ec): acknowledge full_teardown so a pre-upgrade server can't fake success

An old volume server silently ignores full_teardown and returns success
for an ordinary delete, so the caller wrongly believes the generation was
wiped and copies a fresh gen-0 onto an unwiped node. Echo full_teardown_done
in the response; the worker destination cleanup fails when it is absent, and
the shell cluster sweep fails for a reported (mounted) leftover while staying
best-effort for an unreported node. encode_ts_ns stays an accepted transient
(an old server just skips the new read guard, no regression).

* fix(ec): fail the pre-encode sweep for any reachable node that can't ack teardown

A reachable pre-upgrade server ignores full_teardown and returns success
without wiping an orphan, which a later copy then folds into the new
generation. Treat a missing full_teardown_done ack as fatal for every
reachable node (best-effort only for a gRPC-unreachable one), not just for
topology-reported pairs.

* fix(ec): return the served shard identity and validate it client-side

The encode identity was only enforced server-side, so a pre-upgrade server
ignored the request field and served bytes unchecked. Echo the served
shard's EncodeTsNs on every read response chunk and have the client reject a
mismatch (including 0 from an old server), so the guard holds regardless of
server version; a rejected read recovers from parity.

* fix(ec): reject a short/empty remote shard read instead of serving zeros

doReadRemoteEcShardInterval accepted an immediate EOF or a short stream and
returned success with a partly zero-filled, unvalidated buffer (the server
stamps the identity only on chunks that carry bytes). A non-deleted interval
must arrive whole: require n == len(buf), exempting the is_deleted
short-circuit (n=0), matching readLocalEcShardInterval's local check. A short
read now fails so the caller recovers from parity.

* test(ec): fake volume server echoes the full_teardown acknowledgement

The worker now fails a teardown delete that isn't acknowledged (so a
pre-upgrade server can't silently skip the wipe). The fake server's no-op
VolumeEcShardsDelete returned an empty response, which the worker read as a
skipped teardown and aborted the encode. Echo full_teardown_done.

* feat(ec): mirror the encode-run identity guard + full_teardown into the Rust volume server

The Go volume server stamps an encode-run identity (encode_ts_ns) into the .vif
and rejects a read served from a shard of a different run; full_teardown wipes a
whole generation and acknowledges it. The Rust volume server had none of it.
Mirror the shared logic: load encode_ts_ns from the .vif onto the EcVolume,
stamp it on every read response, and reject a request/response mismatch on both
the server and the distributed-read client (recovering from parity); handle
full_teardown by evicting the volume and wiping every EC artifact on each disk,
echoing full_teardown_done so the caller can detect a server that ignored it.

* fix(ec): remove a stale .vif on full teardown of a shard-only node

A shard copy installs shards + .ecx before .vif, so an interrupted copy after a
teardown could mount the new files under the previous run's identity / version /
shard ratio / dat_file_size carried by the surviving .vif. Remove .vif during
full teardown, gated on .idx absence so a source-volume holder keeps its live
.vif. In Rust this lives in a teardown-only helper so the reconcile / load-
fallback paths (which share the base removal) still preserve .vif.

* fix(ec): treat a missing teardown ack as fatal, not as an unreachable node

isNodeUnreachable returned true for any non-gRPC-status error, so a reachable
pre-upgrade server's missing full_teardown_done ack (a plain error) was
classified unreachable and the unreported pair was silently skipped. Classify
only a real codes.Unavailable as unreachable, and wrap the missing ack in a
sentinel the sweep treats as fatal regardless. A genuinely down node still
surfaces as Unavailable from the RPC and stays best-effort.

* fix(ec): reject a short shard read in the local EC needle reader

read_ec_shard_needle ignored the byte count from shard.read_at and appended the
whole pre-sized buffer, so a truncated shard's zero-filled tail passed the later
length check and parsed as garbage. Require n == buf.len() per interval, erroring
on a short read like the local interval reader already does.

* fix(ec): probe reachability before skipping a node that returns Unavailable

The pre-encode sweep skipped any node whose teardown delete returned
codes.Unavailable, but a reachable volume server in maintenance mode also
returns that code for the maintenance-gated delete, so its stale EC files were
left behind on a node that can still receive the new generation. Confirm with a
non-maintenance-gated empty-target Ping: skip only when the node fails the probe
too (genuinely unreachable).

* fix(ec): use try_exists for the teardown .vif .idx guard

The teardown-only .vif removal gated on Path::exists(), which returns false on a
permission/IO stat error, so a stat failure on a present .idx would read as a
shard-only node and delete the live source volume's .vif. Gate on
try_exists() == Ok(false) instead, preserving the sidecar on any stat error.

* fix(ec): only skip a sweep node when a Ping confirms it is transport-down

The pre-encode sweep skipped a node whenever its teardown delete and a liveness
Ping both failed, but it treated ANY Ping error as down — an application-level
Internal/ResourceExhausted, or Unimplemented from a pre-Ping server, left a
reachable node's stale generation in place. Classify the Ping tri-state and skip
only when it transport-fails with codes.Unavailable; a reachable or inconclusive
node stays fatal.

* fix(ec): exclude sweep-skipped nodes from the encode's rebalance

The pre-encode sweep skips a genuinely-down node best-effort, but the rebalance
then recollected the current topology — a node that recovered between the two
could become a copy target and receive the new generation while still holding
its stale, never-cleared shards. Have the sweep return the skipped set and
exclude those nodes from the rebalance for this encode, so a node we could not
clean cannot receive the new generation. Standalone ec.balance is unaffected.

* fix(ec): re-sweep recovered nodes before generation so they aren't stranded

A node skipped as down by the pre-encode sweep is excluded from the rebalance,
but it can recover and become the generation host — mounting all shards locally,
then being excluded from distribution. Union-only verification accepts all
shards on one node and deletes the originals: a single point of failure. Re-sweep
the skipped nodes just before generation; one whose teardown now succeeds leaves
the skipped set and rebalances normally, while a node still down stays skipped.

* fix(ec): abort the encode if a selected source is still skipped after re-sweep

The re-sweep un-skips a recovered node, but the source was selected before it and
a node can stay down through the re-sweep then recover just in time to be the
generation host — mounting all shards locally while still excluded from the
rebalance, which union-only verification accepts before deleting the originals.
Abort the encode when a selected source remains skipped after the re-sweep.

* fix(ec): batch delete returns retriable 503 when a volume became EC mid-batch

If a volume is not EC at the batch-delete classification but is encoded to EC and
its .dat deleted before the regular-volume mutation, the mutation returns an exact
"not found" that the filer chunk-GC treats as completed, dropping the delete.
Recheck EC presence under the mutation lock and return a retriable 503 with the
"try again" token so the filer requeues it onto the EC path.

* fix(ec): recheck EC state before the regular batch-delete mutation

ec.encode mounts EC shards (copied from the .dat) before deleting the originals,
so a volume can be EC while its .dat still exists. The batch delete only rechecked
EC after a NotFound, so a successful regular-volume delete in that window wrote a
tombstone to the soon-removed .dat — the delete was lost and the needle resurrected
from the pre-tombstone shards. Recheck has_ec_volume under the write lock before
delete_volume_needle and return a retriable 503 so the filer requeues onto the EC path.

* fix(volume): make the metrics push test independent of test order

test_push_metrics_once asserted the pushed body contains the request-counter
family without ever touching the counter — a CounterVec with no children emits
nothing, so the assertion only held when another test had already created a
labelset in the shared registry. Create one in the test itself.
2026-06-10 22:31:18 -07:00
Chris LuandGitHub 9658f309d2 EC bitrot detection: per-shard checksum sidecars (#9761)
* ec: add EC bitrot checksum protobuf

EcBitrotProtection/EcShardChecksums/ChecksumAlgorithm sidecar messages,
copy_ecsum_file and unsafe_ignore_sidecar fields, and a CHECKSUM scrub mode.

* ec: bitrot checksum sidecar format, validation, and per-volume load

Per-shard CRC32C block checksums in an optional <base>.ecsum sidecar with a
self-integrity header; validation, rolling builder, backfill primitive, and
EcVolume load on mount + removal on destroy.

* ec: capture per-shard checksums at encode; verify-and-exclude on rebuild

WriteEcFilesWithContext returns the protection computed inline during encoding.
generateMissingEcFiles verifies present inputs against the sidecar, excludes
corrupt ones, regenerates in place, and re-verifies; fail-closed unless
unsafe_ignore_sidecar, removing all generated outputs on failure.

* ec: read-only checksum scrub with Reed-Solomon arbiter

ChecksumScrub verifies each local shard against the sidecar and reconstructs
flagged shards from the clean shards so stale-sidecar false positives are not
reported. Wired to the gRPC CHECKSUM mode and ec.scrub -mode checksum.

* ec: server-side bitrot sidecar write, copy, cleanup, and opportunistic backfill

Write .ecsum at fresh encode; propagate it with copy_ecsum_file (tolerant);
remove it on full delete and decode; rebuild honors unsafe_ignore_sidecar and
opportunistically backfills a sidecar when all shards are reachable.

* ec: volume server bitrot config flags

-ec.bitrotChecksum (default on) and -ec.bitrotBlockSizeMB (default 16).

* fix(ec_bitrot): bound -ec.bitrotBlockSizeMB before the int64 multiply

Validate the MiB value is in [1, 1024] before multiplying by 1 MiB, so a huge
flag value cannot overflow int64 and slip past the power-of-two check, and a
block size cannot collapse a sidecar to a few oversized blocks.

* fix(ec_bitrot): distribute the .ecsum sidecar from the worker encode path

The worker EC encode wrote the generation-0 sidecar locally but never added it
to shardFiles, so DistributeEcShards never shipped it and the distributed
holders came up unprotected. Append it to shardFiles and map the ecsum shard
type to its extension in the sender so it travels with the shards.

* fix(ec_bitrot): remove orphaned sidecars when the generation is gone

Gate sidecar removal on existingShardCount==0 alone rather than also requiring a
stray .ecx. A sidecar whose shards have all been deleted is orphaned and must be
removed even when no .ecx remains, or it leaks. .ecx/.ecj/.vif removal stays
gated on hasEcxFile as before.

* fix(ec_bitrot): do not fold checksum blocks scanned into TotalFiles

ChecksumScrub's first return is blocks scanned, not files. Discard it so the
scrub response's TotalFiles (a needle/file count) is not inflated by the block
count for CHECKSUM mode.

* test(ec_bitrot): clean up generated .ecsum sidecars in removeGeneratedFiles

* fix(ec_bitrot): reject an oversized sidecar payload before the uint32 cast

The header stores payload_len as a uint32; bound the payload before the
conversion so a pathological manifest cannot truncate the length field and
corrupt the sidecar. A real manifest is a few KB, so this never trips.

* fix(ec_bitrot): cap -ec.bitrotBlockSizeMB at 64 MiB

The block size becomes the per-shard scratch buffer the scrub/backfill path
allocates, so an over-large value (e.g. 1 GiB) is a memory hazard per concurrent
scrub worker. Lower the upper bound from 1024 to 64 MiB.

* fix(ec_bitrot): add -ecUnsafeIgnoreSidecar to weed tool fix -ecx

The -ecx recovery path reconstructs missing shards via RebuildEcFilesWithContext,
which fails closed on a malformed/stale .ecsum. Without an override flag an
operator could not complete the rebuild without manually deleting the sidecar.
Expose -ecUnsafeIgnoreSidecar (default false) and thread it through.

* fix(ec_bitrot): bound sidecar payload with a direct int constant; drop readFull

Guard len(payload) against a plain int constant (1 GiB) before the allocation
instead of a uint64 MaxUint32 compare, so the allocation-size value is provably
bounded (clears the CodeQL overflow alert) and the math import is no longer
needed. Inline os.File.ReadAt with io.EOF handling in verifyShardFileBlocks and
remove the now-redundant readFull helper (os.File.ReadAt fills the slice or
errors).

* test(ec_bitrot): use slices.Contains instead of a hand-rolled containsU32

* refactor(ec): fold the EcFiles WithContext variants into the base functions

RebuildEcFiles now takes the *ECContext directly (nil => derive from .vif as
before) and WriteEcFiles takes it too (nil => default), removing the parallel
RebuildEcFilesWithContext / WriteEcFilesWithContext names. Callers that had an
explicit context drop the WithContext suffix; the default-context callers pass
nil. No behavior change.

* refactor(ec): pass BackgroundECContext instead of nil to Write/RebuildEcFiles

Add a non-nil BackgroundECContext placeholder (analogous to context.Background())
and have callers with no specific layout pass it instead of a nil *ECContext.
WriteEcFiles resolves a zero/background context to the default ratio and
RebuildEcFiles resolves it from the .vif, so behavior is unchanged.

* fix(ec_bitrot): make BackgroundECContext a func; RebuildEcFiles fails closed on bad .vif

- BackgroundECContext is now a function returning a fresh *ECContext, so callers
  cannot mutate a shared singleton or race on it (and it mirrors context.Background,
  which is also a function).
- RebuildEcFiles now propagates the MaybeLoadVolumeInfo error: a present-but-
  unreadable .vif fails closed instead of silently rebuilding with the default
  ratio (which would corrupt a custom-ratio volume). Pass an explicit ctx to override.
2026-05-31 18:52:44 -07:00
Chris LuandGitHub b1dcb6c52e fix(ec): delete empty stub replicas before distributing EC shards (#9722)
* fix(ec): delete empty stub replicas before distributing EC shards

An interrupted encode can leave a 0-byte .dat replica behind. Until now
the only thing that removed it was deleteOriginalVolume, which runs after
distribute+mount and calls VolumeDelete -> removeVolumeFiles. A regular
volume and an EC volume share the same <collection>_<vid>.vif path, so
deleting the stub at that point strips the .vif out from under the
freshly distributed shards.

Sweep the original replicas with VolumeDelete(OnlyEmpty=true) before
distribute: doIsEmpty uses the same superblock threshold, so only the
0-byte stubs go and any data-bearing replica is refused and kept for the
post-verify delete. Servers cleared in the sweep are skipped by
deleteOriginalVolume so it never touches a server that now holds only EC
shards.

* fix(ec): fail the encode when an empty-replica sweep can't confirm a node

The sweep swallowed every VolumeDelete(OnlyEmpty) error, so a transient
failure on a stub node fell through to the post-verify force-delete on
that node — the shared-.vif clobber the sweep exists to avoid.

Treat only the expected cases (volume not empty, or already gone) as
leave-in-place; any other error propagates and fails the encode, which
rolls back the readonly marks and retries next cycle.
2026-05-28 13:21:24 -07:00
Chris LuandGitHub 0566fbd552 EC encode: place shards via ecbalancer.Place + configurable replica placement (#9623)
* Add shared super_block.ResolveReplicaPlacement; use it in ec_balance

* Add ecbalancer.FromActiveTopology snapshot constructor for EC encode/repair

* Add ecbalancer.Place greenfield/repair placement core (strict + durability-first)

* topology: add GetEffectiveAvailableEcShardSlots; FromActiveTopology uses shard-granular free slots

GetDisksWithEffectiveCapacity flattens reserved shard slots into volume slots via
integer truncation, so an in-flight EC task reserving a non-multiple-of-
DataShardsCount number of shards was lost from the snapshot and freeSlots was
over-reported. GetEffectiveAvailableEcShardSlots subtracts the full reservation
impact at shard granularity.

* ecbalancer.Place: reject nodes without a free disk of the requested type

FromActiveTopology keeps all disk types in the snapshot, so an SSD-only request
could be routed to a node with only HDD capacity (pickBestDiskOnNode then returns
disk 0 on the wrong tier). Filter rack/node selection to those with a free disk
of the requested type.

* ecbalancer.Place: enforce ReplicaPlacement DiffDataCenterCount (per-DC shard cap)

* ecbalancer: enforce DiffDataCenterCount in balance (cross-DC phase + cross-rack DC cap)

Adds a cross-DC corrective phase that drains data centers holding more than
DiffDataCenterCount shards of a volume, and a per-DC cap on cross-rack move
targets. Both are no-ops when DiffDataCenterCount is unset, so balance output is
unchanged for non-DC placements.

* topology: ratio-aware EC shard slots and provisional empty-disk slot

GetEffectiveAvailableEcShardSlots now takes the target collection's data-shard
count, so a 4+2 volume's larger shards are not over-counted at 10 per volume slot;
and it keeps the one provisional slot for freshly started empty servers that
report max=0, matching getEffectiveAvailableCapacityUnsafe. FromActiveTopology
threads the ratio through.

* ecbalancer.Place: explicit disk-type filter signal (fix HDD vs any ambiguity)

HardDriveType normalizes to "", which collided with "" meaning any disk. Add
Constraints.FilterDiskType and normalize both sides so a hdd request matches disks
reported as "" and never leaks to SSD, while filter=false still means any.

* ecbalancer: add clearShardAccounting for repair snapshot reconciliation

Clears one disk's copy of a shard from per-domain accounting and recomputes the
node-level union (preserving a kept copy on another disk of the same node), without
crediting capacity. Repair uses it to drop to-be-deleted copies before placing
missing shards.

* ecbalancer: don't cap cross-DC target racks when DiffRackCount is unset

len(racks)+1 wrongly limited each target rack (3 in a 2-rack cluster), so draining
a DC could stop short of the DiffDataCenterCount cap. Use MaxShardCount+1 as the
effectively-unlimited default.

* topology/ecbalancer: ratio-correct EC capacity accounting

Reservation shard slots (default ShardsPerVolumeSlot units) are now converted to
the target ratio before subtracting, and existing EC shards are charged by size
(targetDataShards/shardDataShards) so a 2+1 shard isn't counted as one 10+4 slot.
Per-shard ratio lookup is behind shardDataShards (OSS uses the standard ratio).

* ecbalancer.Place: candidate tiering and eligible-rack caps

Adds a per-disk eligibility/preference abstraction so Place supports:
- preferred-tag whole-plan retry (try disks carrying the earliest tags first,
  widen to all only if a tier cannot place every shard; reports
  SpilledOutsidePreferredTags),
- soft disk-type spill via DiskTypePolicy (Any/Prefer/Require): Prefer fills the
  preferred type then spills, reporting SpilledToOtherDiskType; Require filters,
- even per-rack caps that divide by racks holding an eligible disk, so a tiered
  cluster (e.g. SSDs in 2 of 4 racks) isn't capped impossibly low.
Disk tags carried via Node.AddDiskTags + FromActiveTopology.

* ecbalancer: export ClearShardAccounting for repair snapshot reconciliation

* ecbalancer: address review feedback (ratio rounding, bitmap walk, same-DC moves)

- topology/ecbalancer: round shard-reservation and existing-shard footprint up
  when converting to target-ratio shard slots, so a sub-slot reservation is not
  truncated to zero and free capacity is not overstated for low-data-shard
  layouts (targetDataShards < ds).
- erasure_coding: add ShardBits.All iterator and use it across the balancer,
  cross-DC phase, and placement scoring instead of scanning 0..MaxShardCount and
  probing Has on every id.
- ecbalancer: allow same-DC cross-rack moves when a DC already sits at its
  DiffDataCenterCount cap; a same-DC move leaves the DC total unchanged. Add a
  regression test that fails without the guard.
- ecbalancer cross-DC phase: pick targets via the eligible-aware
  pickNodeInRackEligible/pickBestDiskEligible helpers so the disk-type filter is
  honored and a 0 disk id is not mistaken for a valid selection.

* ecbalancer: test ecShardSlotsOnDisk fractional round-up

Cover the mixed-ratio path (targetDataShards < existing data shards) so a
shard's fractional footprint is never floored to zero and free capacity is not
overstated. Exercises the round-up via the targetDataShards parameter; OSS uses
the standard ratio at runtime while the enterprise build hits it with real
per-volume ratios.

* ecbalancer: assert node B rack in TestFromActiveTopology

* ecbalancer: split Destination into separate DataCenter and bare Rack

Replace the composite "dc:rack" Rack field on Destination with separate
DataCenter and bare Rack values, matching topology.DiskInfo and the worker-task
convention. Callers (and tests) read the data center directly instead of parsing
the composite with strings.SplitN.

* shell ec.balance: use utilization-based global balancing (parity with worker)

The shell's global rebalance phase balanced by raw shard count; switch it to
fractional fullness (shards/capacity), as the worker already does. On uniform
capacity the two agree; on heterogeneous capacity it fills nodes proportionally
instead of driving small-capacity nodes toward full.

Updates the heterogeneous-capacity regression test to assert even fullness
(~equal shards/capacity per node) rather than even shard count.

* ecbalancer: bounded-proportional per-DC shard spread

DiffDataCenterCount was enforced only as a ceiling (drain-to-cap), which could
leave a within-cap-but-lopsided DC distribution under a loose cap (e.g. 10/4 of 14
with cap=10). Now the cross-DC phase, the cross-rack DC guard, and Place all target
boundedMaxPerDC = min(DiffDataCenterCount, max(ceil(total/numDCs), parityShards)):
shards spread proportionally across DCs, but no tighter than the durability floor
(once each DC holds <= parityShards a DC loss is recoverable, so further spreading
only adds cross-DC/WAN traffic). No-op when DiffDataCenterCount is 0; identical to
before when the cap is the binding constraint.

* ecbalancer: drop DiffDataCenterCount enforcement for EC placement

The 1-byte volume ReplicaPlacement packs xyz into x*100+y*10+z<=255, so the DC
digit can only be 0-2 -- far too small to be a meaningful per-DC EC shard cap (a
cap of 1-2 would demand 7-14 DCs for a 10+4 volume). It's volume replica-placement,
not an EC spec. Removes the cross-DC balance phase, the DC guard in the cross-rack
phase, and the per-DC cap in Place (and the just-added bounded-proportional logic);
EC relies on the RP-independent rack/node even spread instead. Rack/node caps
(DiffRackCount/SameRackCount) are unchanged. Per-domain EC caps are left for a real
EC placement spec.

* ecbalancer: enforce per-disk durability cap; symmetric reserve/release

Place now refuses to put more than parityShards shards of a volume on a single
disk (pickBestDiskEligible skips a disk once it holds parityShards of the volume,
a hard cap not relaxed even in durability-first). Previously Place assigned by
free capacity, so a skewed near-full cluster could pile >parityShards onto one
disk -> losing it loses the volume; only distinct-disk count was checked. This
covers encode and repair (both route through Place); the caller skips/leaves the
volume rather than minting an unrecoverable layout.

Also makes reserveShard decrement freeSlots unconditionally, symmetric with
releaseShard's unconditional increment (the old guarded decrement could credit a
phantom slot on release if a shard were ever reserved onto a full disk).

* ecbalancer: add Topology.ReleaseVolumeShards (clear + credit) for greenfield encode

Releases all of a volume's shards from the snapshot and credits the freed disk
capacity, so a greenfield encode can plan as if stale EC shards from a prior failed
attempt are gone. Safe to credit because the encode task deletes stale shards
(cleanupStaleEcShards) before distributing the new ones. Distinct from
ClearShardAccounting (repair), which does not credit.

* ecbalancer: ReleaseVolumeShards credits node freeSlots, not just disks

releaseShard only increments per-disk freeSlots, but rack capacity is summed from
node freeSlots (buildRacks) and node freeSlots gates node eligibility. Crediting
only disks left a node/rack looking full after releasing stale shards, so a
greenfield encode still couldn't use the freed capacity. Now credits the node by
the total disk-slots freed.

* ecbalancer: correct PlacementMode docs (encode uses durability-first)

PlaceStrict was labeled '(encode)' but encode uses PlaceDurabilityFirst. Clarify
that durability-first is used by both encode and repair, reports relaxations in
PlaceResult.Relaxed, and never relaxes the per-disk durability cap.

* ecbalancer: treat SameRackCount as a direct per-node shard cap

The 3rd ReplicaPlacement digit now caps shards per node at exactly the digit
value, matching how DiffRackCount (2nd digit) caps per rack, instead of allowing
digit+1 per node. This makes the per-rack and per-node caps consistent and
matches the documented "digits cap EC shards per rack and per node" semantics;
e.g. 011 now means at most one shard per rack and one per node.

* EC encode: place shards via ecbalancer.Place + configurable replica placement

Encode now plans destinations through the shared ecbalancer.Place policy
(durability-first: prefers the source disk type and honors replica placement /
caps / anti-affinity, relaxing rather than failing when capacity is tight) instead
of the EC-only placement planner. Targets and capacity reservations use Place's
actual per-disk shard assignment, not a round-robin guess; cross-volume in-cycle
capacity is tracked by ActiveTopology's pending task, so the cached planner is no
longer consulted. Adds a configurable replica_placement (proto field 6 + worker
form + reader) that overrides the master default replication.

The placement-package planner code is left in place (now unused) and removed in a
follow-up that drops the package.

* EC encode: drop unused dataShards param from createECTargets

Addresses review feedback: after switching to Place's per-disk shardsPerPlan
assignment, createECTargets no longer needs the data-shard count.

* EC encode: fix packed-target validation, greenfield stale-shard accounting, RP docs

- Validate counts distinct shard ids across targets, not target rows, so packed
  plans (fewer (node,disk) targets than shards) aren't rejected.
- planECDestinations releases the volume's stale EC shards from the snapshot before
  Place (ReleaseVolumeShards), crediting their capacity. The encode task deletes
  stale shards before distributing, so a retry on tight capacity no longer fails
  planning by counting shards that are about to be removed.
- replica_placement config/form help no longer claims a data-center limit (the DC
  digit is ignored for EC); detection logs a warning when a DC digit is set.

* EC encode: surface relaxed placement; mark replica_placement best-effort

Encode places with PlaceDurabilityFirst (the chosen lenient behavior), which can
relax caps/anti-affinity/replica-placement to avoid deferring. That was silent
(only disk-type/tag spills were logged). Now logs PlaceResult.Relaxed so a tight
replica placement isn't weakened unnoticed, and the config/form help states the
rack/node caps are best-effort during encode (enforced by rebalancing).

* EC encode: key per-disk shard grouping by struct, not formatted string

planECDestinations grouped destinations using a fmt.Sprintf("%s:%d") map key
per shard; use a {node,diskID} struct key and pre-size the map/slice to the
shard count to drop the per-shard string allocation.
2026-05-22 20:22:30 -07:00
Chris LuandGitHub cd15ae1395 fix(ec): bring ec.encode worker and EC/volume helpers to parity with shell (#9599)
* refactor(volume): extract replica sync/select into shared volume_replica package

Move the volume replica reconciliation helpers (status, union builder,
SyncAndSelectBestReplica, ReadNeedleMeta) out of the shell into a new
weed/storage/volume_replica package so both the shell (ec.encode, volume.tier.move,
volume.check.disk) and the EC encode worker can reuse them. No behavior change.

* fix(ec): bring ec.encode worker to parity with the shell

- Sync replicas and encode the most-complete one (via the shared
  volume_replica.SyncAndSelectBestReplica) instead of a possibly-stale replica,
  marking all replicas readonly first. Prevents silent data loss when a stale
  replica is encoded and the originals deleted.
- Skip remote/tiered volumes in detection (shell ec.encode excludes them).
- Min-node safety gate: refuse to encode when cluster nodes < parity shards.
- Align default thresholds with the shell (fullness 0.95, quiet 1h).

* fix(vacuum): plugin path honors min_volume_age_seconds override

deriveVacuumConfig hard-coded MinVolumeAgeSeconds=0, dropping any configured
value. Read it from worker config (default 0, matching the shell/master vacuum
which has no age gate) so an explicit override is honored.

* address review feedback

- config.go: align GetConfigSpec schema defaults (quiet_for_seconds=3600,
  fullness_ratio=0.95) with the runtime defaults so UI/bootstrap flows match the
  shell (coderabbitai).
- ec_task.go: roll back readonly when markReplicasReadonly fails partway, so
  already-marked replicas don't stay readonly (coderabbitai).
- volume_replica: pass the caller's replica statuses into buildUnionReplica instead
  of re-fetching them, and skip the per-needle ReadNeedleMeta RPC when the source
  replica is read-only (gemini-code-assist).

* test(plugin_workers/ec): make fixtures eligible under the new defaults

The default EC encode thresholds were raised to match the shell (fullness 0.95,
quiet 1h), but the plugin-worker integration fixtures still used 90%-full /
10-minute-old volumes, so detection found no eligible volumes and the tests failed
in CI. Bump the eligible fixtures to 96% full and 2h old.
2026-05-21 02:16:28 -07:00
Chris LuandGitHub 2a41e76101 fix(ec): blanket-clean every destination over the full shard range (#9512)
* fix(ec): blanket-clean every destination over the full shard range

The previous cleanup pass walked t.sources only, with the shard ids the
topology had reported at detection time. In the wild, a destination can
end up with EC shards mounted that the topology snapshot didn't list —
shards on a sibling disk that hadn't heartbeated, or shards left over
from a concurrent attempt's mount step. FindEcVolume still returns
true, so the next ReceiveFile trips the mounted-volume guard.

Cleanup now unions t.sources (with ShardIds) and t.targets and issues
unmount + delete over [0..totalShards-1] on each. Both RPCs are
idempotent on missing shards, so the wider sweep is free.

Two new tests cover the gap: shards mounted beyond what t.sources
lists, and a target-only destination with no source row.

* log(ec): include disk_id in EC unmount/delete/refusal log lines

The current logs identify the volume and shard but leave disk_id off,
which makes the cross-server cleanup story hard to follow when
multiple disks of one server hold pieces of the same volume:

  UnmountEcShards 4121.1                              -> add disk_id
  ec volume video-recordings_4121 shard delete [1 5]  -> add per-loc disk_id
  volume server X:Y deletes ec shards from 4121 [...] -> add disk_id
  ReceiveFile: ec volume 4121 is mounted; refusing... -> add disk_ids

ReceiveFile's refusal now names the disk_ids actually holding the
mount so operators can see whether the next cleanup pass needs to
target a sibling disk. Added Store.FindEcVolumeDiskIds /
Store::find_ec_volume_disk_ids as the supporting primitive.

Mirrored in seaweed-volume/src/ (unmount log in Store::unmount_ec_shard,
heartbeat delete log in diff_ec_shard_delta_messages, refusal in the
ReceiveFile handler).

* test(ec): stub VolumeEcShardsUnmount/Delete on the fake volume server

The plugin-worker EC tests boot a fake volume server that embeds
UnimplementedVolumeServerServer. After the worker started calling
VolumeEcShardsUnmount + VolumeEcShardsDelete pre-distribute, the
default Unimplemented response surfaced as fourteen "method not
implemented" errors and TestErasureCodingExecutionEncodesShards
failed. Both RPCs are no-ops here — nothing on the fake server has
mounted state or persisted shard files to remove.
2026-05-17 11:31:37 -07:00
Chris LuandGitHub 2c1482f7a6 fix(ec): clear cross-server stale EC shards before re-distribute (#9478) (#9499)
* fix(ec): clear cross-server stale EC shards before re-distribute (#9478)

A previous failed encode leaves partial .ec?? shards mounted on
destination volume servers that are not the .dat owner. PR #9480 only
prunes when the .dat sits on a sibling disk of the SAME store, so the
cross-server case stays stuck: every retry trips
volume_grpc_copy.go:570's "ec volume %d is mounted; refusing overwrite"
guard and the scheduler loops.

Detection already lists existing EC shards as CleanupECShards sources;
plumb the shard ids through (ActiveTopology.GetECShardLocations,
TaskSourceSpec, TaskSource.shard_ids) and have the EC worker call
VolumeEcShardsUnmount + VolumeEcShardsDelete on each destination after
the local shard set is generated and before distributeEcShards. Skip
EC-shard sources in getReplicas so the post-encode VolumeDelete step
does not target destination-only nodes.

Integration test mounts a partial shard subset, asserts the
mounted-volume refusal, runs cleanupStaleEcShards, and asserts the
next ReceiveFile lands.

* chore(ec): tighten code comments in stale-shard cleanup

Drop issue-number refs from code comments and shorten the docstrings
on cleanupStaleEcShards / unmountAndDeleteEcShards / getReplicas plus
the new test file. Behavior unchanged.

* fix(ec): skip empty-ShardIds locations; dedupe getReplicas by node

GetECShardLocations dropped entries where ecShardMatchesCollection saw a
phantom info record with EcIndexBits=0 — without ShardIds, getReplicas
misread the resulting source as a regular replica and would have called
VolumeDelete on a destination-only node.

getReplicas now dedupes by Node since VolumeDelete is server-wide;
per-disk source rows on the same server collapse to one call.

* refactor(ec): use MaxShardCount and ShardBits in collectShardIdsForDisk

Drop the literal 32 bit-iteration bound for erasure_coding.MaxShardCount
and treat the EcIndexBits union as a ShardBits so Count() drives the
slice preallocation. Keeps the helper aligned with the rest of the EC
code and survives any future expansion of the shard-count ceiling.
2026-05-14 11:57:45 -07:00
Chris LuandGitHub 3a8389cd68 fix(ec): verify full shard set before deleting source volume (#9490) (#9493)
* fix(ec): verify full shard set before deleting source volume (#9490)

Before this change, both the worker EC task and the shell ec.encode
command would delete the source .dat as soon as MountEcShards returned —
even if distribute/mount failed partway, leaving fewer than 14 shards
in the cluster. The deletion was logged at V(2), so by the time someone
noticed missing data the only trace was a 0-byte .dat synthesized by
disk_location at next restart.

- Worker path adds Step 6: poll VolumeEcShardsInfo on every destination,
  union the bitmaps, and refuse to call deleteOriginalVolume unless all
  TotalShardsCount distinct shard ids are observed. A failed gate leaves
  the source readonly so the next detection scan can retry.
- Shell ec.encode adds the same gate after EcBalance, walking the master
  topology with collectEcNodeShardsInfo.
- VolumeDelete RPC success and .dat/.idx unlinks now log at V(0) so any
  source destruction is traceable in default-verbosity production logs.

The EC-balance-vs-in-flight-encode race is intentionally left for a
follow-up; balance should refuse to move shards for a volume whose
encode job is not in Completed state.

* fix(ec): trim doc comments on the new shard-verification path

Drop WHAT-describing godoc on freshly added helpers; keep only the WHY
notes (query-error policy in VerifyShardsAcrossServers, the #9490
reference at the call sites).

* fix(ec): drop issue-number anchors from new comments

Issue references age poorly — the why behind each comment already
stands on its own.

* fix(ec): parametrize RequireFullShardSet on totalShards

Take totalShards as an argument instead of reading the package-level
TotalShardsCount constant. The OSS callers continue to pass 14, but the
helper is now usable with any DataShards+ParityShards ratio.

* test(plugin_workers): make fake volume server respond to VolumeEcShardsInfo

The new pre-delete verification gate calls VolumeEcShardsInfo on every
destination after mount, and the fake server's UnimplementedVolumeServer
returns Unimplemented — the verifier read that as zero shards on every
node and aborted source deletion. Build the response from recorded
mount requests so the integration test exercises the gate end-to-end.

* fix(rust/volume): log .dat/.idx unlink with size in remove_volume_files

Mirror the Go-side change in weed/storage/volume_write.go: stat each
file before removing and emit an info-level log for .dat/.idx so a
destructive call is always traceable. The OSS Rust crate previously
unlinked them silently.

* fix(ec/decode): verify regenerated .dat before deleting EC shards

After mountDecodedVolume succeeds, the previous code immediately
unmounts and deletes every EC shard. A silent failure in generate or
mount could leave the cluster with neither shards nor a valid normal
volume. Probe ReadVolumeFileStatus on the target and refuse to proceed
if dat or idx is 0 bytes.

Also make the fake volume server's VolumeEcShardsInfo reflect whichever
shard files exist on disk (seeded for tests as well as mounted via
RPC), so the new gate can be exercised end-to-end.

* fix(ec): address PR review nits in verification + fake server

- Drop unused ServerShardInventory.Sizes field.
- Skip shard ids >= MaxShardCount before bitmap Set so the ShardBits
  bound is explicit (Set already no-ops on overflow, this is for
  clarity).
- Nil-guard the fake server's VolumeEcShardsInfo so a malformed call
  doesn't panic the test process.
2026-05-13 19:29:24 -07:00
Chris LuandGitHub 532b088262 fix(ec): preserve source disk type across EC encoding (#9423) (#9449)
* fix(ec): carry source disk type on VolumeEcShardsMount (#9423)

When EC shards land on a target whose disk type differs from the
source volume's, master heartbeats wrongly reported under the target
disk's type. Add source_disk_type to VolumeEcShardsMountRequest; the
target server applies it to the in-memory EcVolume via SetDiskType so
the mount notification and steady-state heartbeat both carry the
source's disk type. Empty value falls back to the location's disk
type (used by disk-scan reload paths).

The override is not persisted with the volume — disk type stays an
environmental property and .vif remains portable.

* fix(ec): plumb source disk type through plugin worker (#9423)

Add source_disk_type to ErasureCodingTaskParams (field 8; 7 reserved),
populate it from the metric the detector already collects, thread it
through ec_task into the MountEcShards helper, and forward it on the
VolumeEcShardsMount RPC.

* fix(ec): mirror source disk type plumbing in rust volume server (#9423)

The volume_ec_shards_mount handler now forwards source_disk_type into
mount_ec_shard → DiskLocation::mount_ec_shards. When non-empty it
overrides ec_vol.disk_type (and each mounted shard's disk_type) via
the new set_disk_type method; empty value keeps the location's disk
type, so disk-scan reload and reconcile paths are unchanged.

Also picks up two pre-existing proto drifts that 'make gen' synced
from weed/pb (LockRingUpdate in master.proto, listing_cache_ttl_seconds
in remote.proto).

* feat(ec): bias placement toward preferred disk type (#9423)

Add DiskCandidate.DiskType and PlacementRequest.PreferredDiskType.
When PreferredDiskType is non-empty, SelectDestinations partitions
suitable disks into matching/fallback tiers and runs the rack/server/
disk-diversity passes on the matching tier first; the fallback tier
is only consulted if the matching pool can't satisfy ShardsNeeded.
PlacementResult.SpilledToOtherDiskType lets callers warn on spillover.

Empty PreferredDiskType keeps the existing single-pool behavior.

* fix(ec): plumb source disk type into placement planner (#9423)

diskInfosToCandidates now copies DiskInfo.DiskType into the placement
candidate, and ecPlacementPlanner.selectDestinations forwards
metric.DiskType as PreferredDiskType so EC shards land on disks
matching the source volume's disk type when possible. A glog warning
fires when placement had to spill to other disk types.

* test(ec): integration coverage for source-disk-type plumbing (#9423)

store_ec_disk_type_test exercises Store.MountEcShards end-to-end: a
shard physically lives on an HDD location, MountEcShards is called
with sourceDiskType="ssd", and the test asserts that the in-memory
EcVolume, the mounted shard, the NewEcShardsChan notification, and
the steady-state heartbeat all report under the source's disk type.
A companion test pins the empty-source path so disk-scan reload
keeps the location's disk type.

detection_disk_type_test exercises the worker plumbing: with a
cluster of nodes carrying both HDD and SSD disks, planECDestinations
must place every shard on SSD when metric.DiskType="ssd"; with only
one SSD node and 13 HDD nodes it must still satisfy a 10+4 layout
via spillover (and log a warning).

* revert(ec): drop unrelated proto drift in seaweed-volume/proto (#9423)

make gen pulled two pre-existing OSS changes into the rust proto
tree (LockRingUpdate / by_plugin in master.proto,
listing_cache_ttl_seconds in remote.proto). Reviewers flagged it as
scope creep — none of the rust EC fix references those fields.
Restore both files to origin/master so this branch only touches
EC-related symbols.

* fix(ec placement): treat empty disk type as hdd and skip used racks on spill (#9423)

partitionByDiskType used raw string comparison, so a PreferredDiskType
of "hdd" never matched candidates whose DiskType is "" (the
HardDriveType sentinel that weed/storage/types uses). EC encoding of
an HDD source would spill onto any HDD reporting "" even when the
cluster has plenty of matching capacity. Normalize both sides
through normalizeDiskType, which lowercases and folds "" → "hdd",
mirroring types.ToDiskType without taking a dependency on it.

selectFromTier's rack-diversity pass also kept revisiting racks the
preferred tier had already used when running on the fallback tier,
which negated PreferDifferentRacks on spillover. Skip racks already
in usedRacks so fallback placements still spread onto new racks.

* fix(ec): empty-source remount must not clobber existing disk type (#9423)

mount_ec_shards_with_idx_dir runs more than once per vid (RPC mount,
disk-scan reload, orphan-shard reconcile). After an RPC sets the
source-derived disk type, any later call passing source_disk_type=""
was resetting ec_vol.disk_type back to the location's value, which
reintroduces the heartbeat drift this PR is meant to fix. Only
default to the location's disk type when the EC volume is fresh
(no shards mounted yet); otherwise leave the recorded type alone so
empty-source reloads preserve whatever the original mount RPC set.
2026-05-11 20:21:50 -07:00
Chris LuandGitHub 628363c4a6 fix(erasure_coding): surface replica delete failures from EC task (#9184) (#9187)
* test(erasure_coding): reproduce #9184 deleteOriginalVolume swallowing errors

ErasureCodingTask.deleteOriginalVolume logs a warning when any replica
VolumeDelete fails and then returns nil, so the EC task reports
success to the admin even when a source replica survives. That stale
replica lets a later detection scan re-propose the same volume and,
once retried, drives the mounted-shard-truncation corruption that
issue 9184 also describes.

Reproducer: wire one reachable replica (succeeds) and one unreachable
replica (fails) and assert the function currently returns nil. After
the fix the function must surface the replica failure so the task is
retried rather than marked done, and this test needs to be inverted.

* fix(erasure_coding): surface replica delete failures from EC task

ErasureCodingTask.deleteOriginalVolume previously logged a warning
and returned nil when any VolumeDelete against a source replica
failed. The EC task therefore reported overall success to the admin
even when a source replica stayed on disk, which let a later
detection scan propose a duplicate EC encoding of the same volume.
The retry then walked the ReceiveFile path against servers that
already had mounted EC shards for the volume, truncating the live
shard files in place (the other half of #9184).

This change returns an error describing the per-replica failures
after the best-effort delete pass, so the task is marked failed
instead of silently moving on. Successful deletes are still applied
(per-replica progress is preserved); only the final return changes.

When combined with the ReceiveFile mount-safety check, a stuck
original replica now produces loud, actionable failures instead of
silent corruption.

Tests:
- TestDeleteOriginalVolumeSurfacesReplicaFailures: asserts an error
  is returned and names the unreachable replica, while the reachable
  replica still gets deleted.
- TestDeleteOriginalVolumeSucceedsWhenAllReplicasReachable: pins the
  happy path.
2026-04-22 16:02:51 -07:00
Chris LuandGitHub 940eed0bd3 fix(ec): generate .ecx before EC shards to prevent data inconsistency (#8972)
* fix(ec): generate .ecx before EC shards to prevent data inconsistency

In VolumeEcShardsGenerate, the .ecx index was generated from .idx AFTER
the EC shards were generated from .dat. If any write occurred between
these two steps (e.g. WriteNeedleBlob during replica sync, which bypasses
the read-only check), the .ecx would contain entries pointing to data
that doesn't exist in the EC shards, causing "shard too short" and
"size mismatch" errors on subsequent reads and scrubs.

Fix by generating .ecx FIRST, then snapshotting datFileSize, then
encoding EC shards. If a write sneaks in after .ecx generation, the
EC shards contain more data than .ecx references — which is harmless
(the extra data is simply not indexed).

Also snapshot datFileSize before EC encoding to ensure the .vif
reflects the same .dat state that .ecx was generated from.

Add TestEcConsistency_WritesBetweenEncodeAndEcx that reproduces the
race condition by appending data between EC encoding and .ecx generation.

* fix: pass actual offset to ReadBytes, improve test quality

- Pass offset.ToActualOffset() to ReadBytes instead of 0 to preserve
  correct error metrics and error messages within ReadBytes
- Handle Stat() error in assembleFromIntervalsAllowError
- Rename TestEcConsistency_DatFileGrowsDuringEncoding to
  TestEcConsistency_ExactLargeRowEncoding (test verifies fixed-size
  encoding, not concurrent growth)
- Update test comment to clarify it reproduces the old buggy sequence
- Fix verification loop to advance by readSize for full data coverage

* fix(ec): add dat/idx consistency check in worker EC encoding

The erasure_coding worker copies .dat and .idx as separate network
transfers. If a write lands on the source between these copies, the
.idx may have entries pointing past the end of .dat, leading to EC
volumes with .ecx entries that reference non-existent shard data.

Add verifyDatIdxConsistency() that walks the .idx and verifies no
entry's offset+size exceeds the .dat file size. This fails the EC
task early with a clear error instead of silently producing corrupt
EC volumes.

* test(ec): add integration test verifying .ecx/.ecd consistency

TestEcIndexConsistencyAfterEncode uploads multiple needles of varying
sizes (14B to 256KB), EC-encodes the volume, mounts data shards, then
reads every needle back via the EC read path and verifies payload
correctness. This catches any inconsistency between .ecx index entries
and EC shard data.

* fix(test): account for needle overhead in test volume fixture

WriteTestVolumeFiles created a .dat of exactly datSize bytes but the
.idx entry claimed a needle of that same size. GetActualSize adds
header + checksum + timestamp overhead, so the consistency check
correctly rejects this as the needle extends past the .dat file.

Fix by sizing the .dat to GetActualSize(datSize) so the .idx entry
is consistent with the .dat contents.

* fix(test): remove flaky shard ID assertion in EC scrub test

When shard 0 is truncated on disk after mount, the volume server may
detect corruption via parity mismatches (shards 10-13) rather than a
direct read failure on shard 0, depending on OS caching/mmap behavior.
Replace the brittle shard-0-specific check with a volume ID validation.

* fix(test): close upload response bodies and tighten file count assertion

Wrap UploadBytes calls with ReadAllAndClose to prevent connection/fd
leaks during test execution. Also tighten TotalFiles check from >= 1
to == 1 since ecSetup uploads exactly one file.
2026-04-07 19:05:36 -07:00
Chris LuandGitHub d074830016 fix(worker): pass compaction revision and file sizes in EC volume copy (#8835)
* fix(worker): pass compaction revision and file sizes in EC volume copy

The worker EC task was sending CopyFile requests without the current
compaction revision (defaulting to 0) and with StopOffset set to
math.MaxInt64.  After a vacuum compaction this caused the volume server
to reject the copy or return stale data.

Read the volume file status first and forward the compaction revision
and actual file sizes so the copy is consistent with the compacted
volume.

* propagate erasure coding task context

* fix(worker): validate volume file status and detect short copies

Reject zero dat file size from ReadVolumeFileStatus — a zero-sized
snapshot would produce 0-byte copies and broken EC shards.

After streaming, verify totalBytes matches the expected stopOffset
and return an error on short copies instead of logging success.

* fix(worker): reject zero idx file size in volume status validation

A non-empty dat with zero idx indicates an empty or corrupt volume.
Without this guard, copyFileFromSource gets stopOffset=0, produces a
0-byte .idx, passes the short-copy check, and generateEcShardsLocally
runs against a volume with no index.

* fix fake plugin volume file status

* fix plugin volume balance test fixtures
2026-03-29 18:47:15 -07:00
Chris LuandGitHub 7354fa87f1 refactor ec shard distribution (#8465)
* refactor ec shard distribution

* fix shard assignment merge and mount errors

* fix mount error aggregation scope

* make WithFields compatible and wrap errors
2026-02-27 17:21:13 -08:00
Chris LuandGitHub 4f647e1036 Worker set its working directory (#8461)
* set working directory

* consolidate to worker directory

* working directory

* correct directory name

* refactoring to use wildcard matcher

* simplify

* cleaning ec working directory

* fix reference

* clean

* adjust test
2026-02-27 12:22:21 -08:00
6a3a97333f Add support for TLS in gRPC communication between worker and volume server (#8370)
* Add support for TLS in gRPC communication between worker and volume server

* address comments

* worker: capture shared grpc.DialOption in BalanceTask registration closure

* worker: capture shared grpc.DialOption in ErasureCodingTask registration closure

* worker: capture shared grpc.DialOption in VacuumTask registration closure

* worker: use grpc.worker security configuration section for tasks

* plugin/worker: fix compilation errors by passing grpc.DialOption to task constructors

* plugin/worker: prevent double-counting in EC skip counters

---------

Co-authored-by: Chris Lu <chris.lu@gmail.com>
2026-02-18 15:39:53 -08:00
Chris LuandGitHub 208d7f24f4 Erasure Coding: Ec refactoring (#7396)
* refactor: add ECContext structure to encapsulate EC parameters

- Create ec_context.go with ECContext struct
- NewDefaultECContext() creates context with default 10+4 configuration
- Helper methods: CreateEncoder(), ToExt(), String()
- Foundation for cleaner function signatures
- No behavior change, still uses hardcoded 10+4

* refactor: update ec_encoder.go to use ECContext

- Add WriteEcFilesWithContext() and RebuildEcFilesWithContext() functions
- Keep old functions for backward compatibility (call new versions)
- Update all internal functions to accept ECContext parameter
- Use ctx.DataShards, ctx.ParityShards, ctx.TotalShards consistently
- Use ctx.CreateEncoder() instead of hardcoded reedsolomon.New()
- Use ctx.ToExt() for shard file extensions
- No behavior change, still uses default 10+4 configuration

* refactor: update ec_volume.go to use ECContext

- Add ECContext field to EcVolume struct
- Initialize ECContext with default configuration in NewEcVolume()
- Update LocateEcShardNeedleInterval() to use ECContext.DataShards
- Phase 1: Always uses default 10+4 configuration
- No behavior change

* refactor: add EC shard count fields to VolumeInfo protobuf

- Add data_shards_count field (field 8) to VolumeInfo message
- Add parity_shards_count field (field 9) to VolumeInfo message
- Fields are optional, 0 means use default (10+4)
- Backward compatible: fields added at end
- Phase 1: Foundation for future customization

* refactor: regenerate protobuf Go files with EC shard count fields

- Regenerated volume_server_pb/*.go with new EC fields
- DataShardsCount and ParityShardsCount accessors added to VolumeInfo
- No behavior change, fields not yet used

* refactor: update VolumeEcShardsGenerate to use ECContext

- Create ECContext with default configuration in VolumeEcShardsGenerate
- Use ecCtx.TotalShards and ecCtx.ToExt() in cleanup
- Call WriteEcFilesWithContext() instead of WriteEcFiles()
- Save EC configuration (DataShardsCount, ParityShardsCount) to VolumeInfo
- Log EC context being used
- Phase 1: Always uses default 10+4 configuration
- No behavior change

* fmt

* refactor: update ec_test.go to use ECContext

- Update TestEncodingDecoding to create and use ECContext
- Update validateFiles() to accept ECContext parameter
- Update removeGeneratedFiles() to use ctx.TotalShards and ctx.ToExt()
- Test passes with default 10+4 configuration

* refactor: use EcShardConfig message instead of separate fields

* optimize: pre-calculate row sizes in EC encoding loop

* refactor: replace TotalShards field with Total() method

- Remove TotalShards field from ECContext to avoid field drift
- Add Total() method that computes DataShards + ParityShards
- Update all references to use ctx.Total() instead of ctx.TotalShards
- Read EC config from VolumeInfo when loading EC volumes
- Read data shard count from .vif in VolumeEcShardsToVolume
- Use >= instead of > for exact boundary handling in encoding loops

* optimize: simplify VolumeEcShardsToVolume to use existing EC context

- Remove redundant CollectEcShards call
- Remove redundant .vif file loading
- Use v.ECContext.DataShards directly (already loaded by NewEcVolume)
- Slice tempShards instead of collecting again

* refactor: rename MaxShardId to MaxShardCount for clarity

- Change from MaxShardId=31 to MaxShardCount=32
- Eliminates confusing +1 arithmetic (MaxShardId+1)
- More intuitive: MaxShardCount directly represents the limit

fix: support custom EC ratios beyond 14 shards in VolumeEcShardsToVolume

- Add MaxShardId constant (31, since ShardBits is uint32)
- Use MaxShardId+1 (32) instead of TotalShardsCount (14) for tempShards buffer
- Prevents panic when slicing for volumes with >14 total shards
- Critical fix for custom EC configurations like 20+10

* fix: add validation for EC shard counts from VolumeInfo

- Validate DataShards/ParityShards are positive and within MaxShardCount
- Prevent zero or invalid values that could cause divide-by-zero
- Fallback to defaults if validation fails, with warning log
- VolumeEcShardsGenerate now preserves existing EC config when regenerating
- Critical safety fix for corrupted or legacy .vif files

* fix: RebuildEcFiles now loads EC config from .vif file

- Critical: RebuildEcFiles was always using default 10+4 config
- Now loads actual EC config from .vif file when rebuilding shards
- Validates config before use (positive shards, within MaxShardCount)
- Falls back to default if .vif missing or invalid
- Prevents data corruption when rebuilding custom EC volumes

* add: defensive validation for dataShards in VolumeEcShardsToVolume

- Validate dataShards > 0 and <= MaxShardCount before use
- Prevents panic from corrupted or uninitialized ECContext
- Returns clear error message instead of panic
- Defense-in-depth: validates even though upstream should catch issues

* fix: replace TotalShardsCount with MaxShardCount for custom EC ratio support

Critical fixes to support custom EC ratios > 14 shards:

disk_location_ec.go:
- validateEcVolume: Check shards 0-31 instead of 0-13 during validation
- removeEcVolumeFiles: Remove shards 0-31 instead of 0-13 during cleanup

ec_volume_info.go ShardBits methods:
- ShardIds(): Iterate up to MaxShardCount (32) instead of TotalShardsCount (14)
- ToUint32Slice(): Iterate up to MaxShardCount (32)
- IndexToShardId(): Iterate up to MaxShardCount (32)
- MinusParityShards(): Remove shards 10-31 instead of 10-13 (added note about Phase 2)
- Minus() shard size copy: Iterate up to MaxShardCount (32)
- resizeShardSizes(): Iterate up to MaxShardCount (32)

Without these changes:
- Custom EC ratios > 14 total shards would fail validation on startup
- Shards 14-31 would never be discovered or cleaned up
- ShardBits operations would miss shards >= 14

These changes are backward compatible - MaxShardCount (32) includes
the default TotalShardsCount (14), so existing 10+4 volumes work as before.

* fix: replace TotalShardsCount with MaxShardCount in critical data structures

Critical fixes for buffer allocations and loops that must support
custom EC ratios up to 32 shards:

Data Structures:
- store_ec.go:354: Buffer allocation for shard recovery (bufs array)
- topology_ec.go:14: EcShardLocations.Locations fixed array size
- command_ec_rebuild.go:268: EC shard map allocation
- command_ec_common.go:626: Shard-to-locations map allocation

Shard Discovery Loops:
- ec_task.go:378: Loop to find generated shard files
- ec_shard_management.go: All 8 loops that check/count EC shards

These changes are critical because:
1. Buffer allocations sized to 14 would cause index-out-of-bounds panics
   when accessing shards 14-31
2. Fixed arrays sized to 14 would truncate shard location data
3. Loops limited to 0-13 would never discover/manage shards 14-31

Note: command_ec_encode.go:208 intentionally NOT changed - it creates
shard IDs to mount after encoding. In Phase 1 we always generate 14
shards, so this remains TotalShardsCount and will be made dynamic in
Phase 2 based on actual EC context.

Without these fixes, custom EC ratios > 14 total shards would cause:
- Runtime panics (array index out of bounds)
- Data loss (shards 14-31 never discovered/tracked)
- Incomplete shard management (missing shards not detected)

* refactor: move MaxShardCount constant to ec_encoder.go

Moved MaxShardCount from ec_volume_info.go to ec_encoder.go to group it
with other shard count constants (DataShardsCount, ParityShardsCount,
TotalShardsCount). This improves code organization and makes it easier
to understand the relationship between these constants.

Location: ec_encoder.go line 22, between TotalShardsCount and MinTotalDisks

* improve: add defensive programming and better error messages for EC

Code review improvements from CodeRabbit:

1. ShardBits Guardrails (ec_volume_info.go):
   - AddShardId, RemoveShardId: Reject shard IDs >= MaxShardCount
   - HasShardId: Return false for out-of-range shard IDs
   - Prevents silent no-ops from bit shifts with invalid IDs

2. Future-Proof Regex (disk_location_ec.go):
   - Updated regex from \.ec[0-9][0-9] to \.ec\d{2,3}
   - Now matches .ec00 through .ec999 (currently .ec00-.ec31 used)
   - Supports future increases to MaxShardCount beyond 99

3. Better Error Messages (volume_grpc_erasure_coding.go):
   - Include valid range (1..32) in dataShards validation error
   - Helps operators quickly identify the problem

4. Validation Before Save (volume_grpc_erasure_coding.go):
   - Validate ECContext (DataShards > 0, ParityShards > 0, Total <= MaxShardCount)
   - Log EC config being saved to .vif for debugging
   - Prevents writing invalid configs to disk

These changes improve robustness and debuggability without changing
core functionality.

* fmt

* fix: critical bugs from code review + clean up comments

Critical bug fixes:
1. command_ec_rebuild.go: Fixed indentation causing compilation error
   - Properly nested if/for blocks in registerEcNode

2. ec_shard_management.go: Fixed isComplete logic incorrectly using MaxShardCount
   - Changed from MaxShardCount (32) back to TotalShardsCount (14)
   - Default 10+4 volumes were being incorrectly reported as incomplete
   - Missing shards 14-31 were being incorrectly reported as missing
   - Fixed in 4 locations: volume completeness checks and getMissingShards

3. ec_volume_info.go: Fixed MinusParityShards removing too many shards
   - Changed from MaxShardCount (32) back to TotalShardsCount (14)
   - Was incorrectly removing shard IDs 10-31 instead of just 10-13

Comment cleanup:
- Removed Phase 1/Phase 2 references (development plan context)
- Replaced with clear statements about default 10+4 configuration
- SeaweedFS repo uses fixed 10+4 EC ratio, no phases needed

Root cause: Over-aggressive replacement of TotalShardsCount with MaxShardCount.
MaxShardCount (32) is the limit for buffer allocations and shard ID loops,
but TotalShardsCount (14) must be used for default EC configuration logic.

* fix: add defensive bounds checks and compute actual shard counts

Critical fixes from code review:

1. topology_ec.go: Add defensive bounds checks to AddShard/DeleteShard
   - Prevent panic when shardId >= MaxShardCount (32)
   - Return false instead of crashing on out-of-range shard IDs

2. command_ec_common.go: Fix doBalanceEcShardsAcrossRacks
   - Was using hardcoded TotalShardsCount (14) for all volumes
   - Now computes actual totalShardsForVolume from rackToShardCount
   - Fixes incorrect rebalancing for volumes with custom EC ratios
   - Example: 5+2=7 shards would incorrectly use 14 as average

These fixes improve robustness and prepare for future custom EC ratios
without changing current behavior for default 10+4 volumes.

Note: MinusParityShards and ec_task.go intentionally NOT changed for
seaweedfs repo - these will be enhanced in seaweed-enterprise repo
where custom EC ratio configuration is added.

* fmt

* style: make MaxShardCount type casting explicit in loops

Improved code clarity by explicitly casting MaxShardCount to the
appropriate type when used in loop comparisons:

- ShardId comparisons: Cast to ShardId(MaxShardCount)
- uint32 comparisons: Cast to uint32(MaxShardCount)

Changed in 5 locations:
- Minus() loop (line 90)
- ShardIds() loop (line 143)
- ToUint32Slice() loop (line 152)
- IndexToShardId() loop (line 219)
- resizeShardSizes() loop (line 248)

This makes the intent explicit and improves type safety readability.
No functional changes - purely a style improvement.
2025-10-27 22:13:31 -07:00
Chris LuGitHubCopilotgemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
25bbf4c3d4 Admin UI: Fetch task logs (#7114)
* show task details

* loading tasks

* task UI works

* generic rendering

* rendering the export link

* removing placementConflicts from task parameters

* remove TaskSourceLocation

* remove "Server ID" column

* rendering balance task source

* sources and targets

* fix ec task generation

* move info

* render timeline

* simplified worker id

* simplify

* read task logs from worker

* isValidTaskID

* address comments

* Update weed/worker/tasks/balance/execution.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/worker/tasks/erasure_coding/ec_task.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/worker/tasks/task_log_handler.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* fix shard ids

* plan distributing shard id

* rendering planned shards in task details

* remove Conflicts

* worker logs correctly

* pass in dc and rack

* task logging

* Update weed/admin/maintenance/maintenance_queue.go

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

* display log details

* logs have fields now

* sort field keys

* fix link

* fix collection filtering

* avoid hard coded ec shard counts

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
2025-08-09 21:47:29 -07:00
Chris LuGitHubCopilotgemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
9d013ea9b8 Admin UI: include ec shard sizes into volume server info (#7071)
* show ec shards on dashboard, show max in its own column

* master collect shard size info

* master send shard size via VolumeList

* change to more efficient shard sizes slice

* include ec shard sizes into volume server info

* Eliminated Redundant gRPC Calls

* much more efficient

* Efficient Counting: bits.OnesCount32() uses CPU-optimized instructions to count set bits in O(1)

* avoid extra volume list call

* simplify

* preserve existing shard sizes

* avoid hard coded value

* Update weed/storage/erasure_coding/ec_volume_info.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/admin/dash/volume_management.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update ec_volume_info.go

* address comments

* avoid duplicated functions

* Update weed/admin/dash/volume_management.go

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

* simplify

* refactoring

* fix compilation

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
2025-08-02 02:16:49 -07:00
Chris LuandGitHub 0975968e71 admin: Refactor task destination planning (#7063)
* refactor planning into task detection

* refactoring worker tasks

* refactor

* compiles, but only balance task is registered

* compiles, but has nil exception

* avoid nil logger

* add back ec task

* setting ec log directory

* implement balance and vacuum tasks

* EC tasks will no longer fail with "file not found" errors

* Use ReceiveFile API to send locally generated shards

* distributing shard files and ecx,ecj,vif files

* generate .ecx files correctly

* do not mount all possible EC shards (0-13) on every destination

* use constants

* delete all replicas

* rename files

* pass in volume size to tasks
2025-08-01 11:18:32 -07:00