[dm-devel] dm-rq queue stalls

[Bart Van Assche]

Hello Mike,

With Jens' latest for-next branch (commit 6c4f43dfecae) and with commit
6077c2d70609 ("dm rq: Avoid that request processing stalls sporadically")
reverted I see again queue stalls every now and then. An example:

# srp-test/run_tests -c -d -r 10 -t 02-mq -e kyber
Running test /home/bart/software/infiniband/srp-test/tests/02-mq ...
Test file I/O on top of multipath concurrently with logout and login (0 min; mq)
/dev/disk/by-id/dm-uuid-mpath-3600140572616d6469736b31000000000: not found
Test /home/bart/software/infiniband/srp-test/tests/02-mq failed

I have attached the output of the following command to this e-mail:
(cd /sys/kernel/debug/block && find -type f | xargs grep -aH '')

Can you have a look at this?

Thanks,

Bart.
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