[bug report] NVMe/IB: reset_controller need more than 1min

[Yi Zhang]

Hi
I found this issue on 5.13-rc2 with NVMe/IB environment, could anyone
help check it?
Thanks.

$ time echo 1 >/sys/block/nvme0n1/device/reset_controller
real 0m10.678s
user 0m0.000s
sys 0m0.000s
$ time echo 1 >/sys/block/nvme0n1/device/reset_controller
real 1m11.530s
user 0m0.000s
sys 0m0.000s

target:
$ dmesg | grep nvme
[  276.891454] nvmet: creating controller 1 for subsystem testnqn for
NQN nqn.2014-08.org.nvmexpress:uuid:4c4c4544-0056-4c10-8058-b7c04f383432.
[  287.374412] nvmet: ctrl 1 keep-alive timer (5 seconds) expired!
[  287.399317] nvmet: ctrl 1 fatal error occurred!
[  348.412672] nvmet: creating controller 1 for subsystem testnqn for
NQN nqn.2014-08.org.nvmexpress:uuid:4c4c4544-0056-4c10-8058-b7c04f383432.

client:
$ dmesg | grep nvme
[  281.704475] nvme nvme0: creating 40 I/O queues.
[  285.557759] nvme nvme0: mapped 40/0/0 default/read/poll queues.
[  353.187809] nvme nvme0: I/O 8 QID 0 timeout
[  353.193100] nvme nvme0: Property Set error: 881, offset 0x14
[  353.226082] nvme nvme0: creating 40 I/O queues.
[  357.088266] nvme nvme0: mapped 40/0/0 default/read/poll queues.


-- 
Best Regards,
  Yi Zhang