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Chris LuandDevin
7154732b84
* worker/ec: retry the pinned volume copy after a mid-copy compaction The EC task pins .idx/.dat copies to the CompactionRevision read from ReadVolumeFileStatus so the pair comes from one volume generation. When vacuum compaction lands between that read and either CopyFile, the server rejects the copy with "volume N is compacted" and the whole task fails — on clusters with queued maintenance this makes most EC tasks die to a race they cannot avoid. On a compaction mismatch the copy now restarts under a freshly read revision, up to a bounded number of attempts; other errors still fail immediately. Generated with [Devin](https://devin.ai) Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com> * worker/ec: read the retried copy's expiry from its own file status A mid-copy compaction makes the source reload the volume, and the fresh ReadVolumeFileStatus can carry a different expireAtSec than the pre-compaction read. Keeping the attempt-0 expiry could let the EC volume outlive its source TTL. * worker/ec: cover the compaction retry with a stub volume server * worker/ec: also observe revised .idx bytes in the compaction retry test * worker/ec: read the fake source under its mutex in the retry test --------- Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>