Hi Chandan,
This bug is easily recreated when executing the test on Btrfs with
subpage-blocksize patchset applied. I haven't been able to test the recently
rebased subpage-blocksize patchset yet.
Coming back to the issue ... The problem exists because the test code uses
dm-flakey. Josef had suggested that using dm-log-writes instead of dm-flakey
should fix the problem. I will work on this and post a patch soon.
generic/311 is using the drop writes, it appears eio shouldn't be
reported
_load_flakey_table $FLAKEY_DROP_WRITES $lockfs
Looks like there is a regression in the dm-flakey which was fixed by
---
dm flakey: fix reads to be issued if drop_writes configured
v4.8-rc3 commit 99f3c90d0d ("dm flakey: error READ bios during the
down_interval") overlooked the 'drop_writes' feature, which is meant to
allow reads to be issued rather than errored, during the down_interval.
Fixes: 99f3c90d0d ("dm flakey: error READ bios during the
down_interval")
---
That also explains why I couldn't reproduce this at mainline.
Thanks, Anand
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