Files
seaweedfs/weed/storage/erasure_coding
e23a952878 ec: don't index ev.Shards[0] when the last shard was unmounted (#12538)
* ec: don't index ev.Shards[0] when the last shard was unmounted

* ec: skip a runtime emptied before the scrub merge reads its shards

FindAllEcVolumes releases each location lock before MergeEcRuntimes runs,
so an unmount can leave a merged runtime with no shards and the width
scan indexed Shards[-1].

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* ec: treat a scrub merge with no shard left as a vanished volume

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* ec: read Shards once in ShardSize so a concurrent unmount cannot empty it

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* ec: read each runtime's Shards once in the scrub merge

The vanished check and the slot construction read Shards separately, so
an unmount between them produced a non-nil view with no shards.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* ec: anchor the scrub merge on a generation that still holds shards

An unmount can empty the newest runtime while an older one keeps its
shards, which left a merged view anchored on the emptied generation with
no slots and the holder reported as skipped.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Mansur Akhmadi <10739460+mansur-akhmadi@users.noreply.github.com>
Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-11-11 09:57:39 -08:00
..
2019-05-15 01:02:00 -07:00
2019-05-15 01:02:00 -07:00