Reviewed by: George Wilson <george.wil...@delphix.com>
Reviewed by: Matt Ahrens <matthew.ahr...@delphix.com>
ztest failed with uncorrectable IO error despite having the fix for #7163.
Both sides of the mirror have CANT_OPEN_BAD_LABEL, which also distinguishes
it from that issue.
Definitely seems like a racing condition between the vdev_validate and spa_sync:
1. Thread A (spa_sync): vdev label is updated to latest txg
2. Thread B (vdev_validate): vdev label's txg is compared to
spa_last_synced_txg and is ahead.
3. Thread A (spa_sync): spa_last_synced_txg is updated to latest txg.
Solution: do not check txg in vdev_validate unless config lock is held.
Upstream bug: DLPX-46430
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-- Commit Summary --
* 9187 racing condition between vdev label and spa_last_synced_txg in
-- File Changes --
M usr/src/uts/common/fs/zfs/vdev.c (5)
-- Patch Links --
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