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Chris Lu
c0e1cbe9ed
Addressing PR #9382 review: - Data race on lastIoError: guard lastIoError + lastIoErrorCount with a RWMutex and expose them through note/clear/get helpers so the heartbeat reader sees a consistent snapshot. Verified with -race. - Collection-size accounting: when a volume is quarantined for sustained EIO, skip the entire per-volume bookkeeping (`continue`) instead of flipping shouldDeleteVolume — the old branch subtracted a size that was never added, dragging the collection gauge to zero / negative. - Recoverability: MarkVolumeWritable now also calls clearIoError so an operator can rejoin a quarantined replica. The next failed op re-arms the streak if the disk is still bad. - Non-EIO streak break: a non-EIO error (e.g. ENOSPC) now resets the consecutive-EIO counter, so a sequence EIO,EIO,ENOSPC,EIO is treated as a streak of one — the counter only tracks consecutive EIOs. Reads already call checkReadWriteError (volume_read.go), so successful reads also clear the streak — no change needed there.