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Prevent unnecessary resilver restarts

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If a device is participating in an active resilver, then it will have a
non-empty DTL. Operations like vdev_{open,reopen,probe}() can cause the
resilver to be restarted (or deferred to be restarted later), which is
unnecessary if the DTL is still covered by the current scan range. This
is similar to the logic in vdev_dtl_should_excise() where the DTL can
only be excised if it's max txg is in the resilvered range.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Gallagher <john.gallagher@delphix.com>
Reviewed-by: Kjeld Schouten <kjeld@schouten-lebbing.nl>
Signed-off-by: John Poduska <jpoduska@datto.com>
Issue #840
Closes #9155
Closes #9378
Closes #9551
Closes #9588
This commit is contained in:
jwpoduska
2019-11-27 13:15:01 -05:00
committed by Tony Hutter
parent 0fd9a28de8
commit 1be3cba381
14 changed files with 410 additions and 88 deletions
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tests/runfiles/linux.run
+4
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@@ -796,6 +796,10 @@ tests = ['reservation_001_pos', 'reservation_002_pos', 'reservation_003_pos',
'reservation_022_pos']
tags = ['functional', 'reservation']
[tests/functional/resilver]
tests = ['resilver_restart_001']
tags = ['functional', 'resilver']
[tests/functional/rootpool]
tests = ['rootpool_002_neg', 'rootpool_003_neg', 'rootpool_007_pos']
tags = ['functional', 'rootpool']