On Jul 23, 2024 / 13:58, Shin'ichiro Kawasaki wrote: > The test case dm/002 rarely fails with the message below: > > dm/002 => nvme0n1 (dm-dust general functionality test) [failed] > runtime 0.204s ... 0.174s > --- tests/dm/002.out 2024-06-14 14:37:40.480794693 +0900 > +++ /home/shin/Blktests/blktests/results/nvme0n1/dm/002.out.bad 2024-06-14 21:38:18.588976499 +0900 > @@ -7,4 +7,6 @@ > countbadblocks: 0 badblock(s) found > countbadblocks: 3 badblock(s) found > countbadblocks: 0 badblock(s) found > +device-mapper: remove ioctl on dust1 failed: Device or resource busy > +Command failed. > Test complete > modprobe: FATAL: Module dm_dust is in use. > > When udev opens the dm device, "dmsetup remove" command also tries to > open the device and fails with EBUSY. To avoid the failure, add the > --retry option to the dmsetup command. > > Suggested-by: Milan Broz <gmazyland@xxxxxxxxx> > Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@xxxxxxx> Thanks for the review and the test. I have applied the patch.