* xfstests seems broken on btrfs with multi-dev TEST_DEV
@ 2021-02-24 16:12 Eric Sandeen
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From: Eric Sandeen @ 2021-02-24 16:12 UTC (permalink / raw)
To: linux-btrfs; +Cc: linux-fsdevel
Last week I was curious to just see how btrfs is faring with RAID5 in
xfstests, so I set it up for a quick run with devices configured as:
TEST_DEV=/dev/sdb1 # <--- this was a 3-disk "-d raid5" filesystem
SCRATCH_DEV_POOL="/dev/sdb2 /dev/sdb3 /dev/sdb4 /dev/sdb5 /dev/sdb6"
and fired off ./check -g auto
Every test after btrfs/124 fails, because that test btrfs/124 does this:
# un-scan the btrfs devices
_btrfs_forget_or_module_reload
and nothing re-scans devices after that, so every attempt to mount TEST_DEV
will fail:
> devid 2 uuid e42cd5b8-2de6-4c85-ae51-74b61172051e is missing"
Other btrfs tests seeme to have the same problem.
If xfstest coverage on multi-device btrfs volumes is desired, it might be
a good idea for someone who understands the btrfs framework in xfstests
to fix this.
Thanks,
-Eric
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