Hello

I found the nvme disconnect always needs more than 1min to be
finished, could anyone help check this issue?

Yi,

Does this happen with rxe? didn't see this in my test VM lately.

Reproducer:
+ nvme connect -t rdma -a 172.31.0.202 -s 4420 -n testnqn

real    0m4.673s
user    0m0.000s
sys     0m0.005s
+ nvme disconnect -n testnqn
NQN:testnqn disconnected 1 controller(s)

real    1m9.028s
user    0m0.000s
sys     0m0.187s

client:
[  283.966930] nvme nvme0: creating 40 I/O queues.
[  288.527028] nvme nvme0: mapped 40/0/0 default/read/poll queues.
[  288.530501] nvme nvme0: new ctrl: NQN "testnqn", addr 172.31.0.202:4420
[  288.533203] nvme nvme0: Removing ctrl: NQN "testnqn"
[  357.534154] nvme nvme0: I/O 18 QID 0 timeout
[  357.539644] nvme nvme0: Property Set error: 881, offset 0x14target:

target:
[  229.016490] nvmet: adding nsid 1 to subsystem testnqn
[  229.044861] nvmet_rdma: enabling port 2 (172.31.0.202:4420)
[  280.697930] nvmet: creating nvm controller 1 for subsystem testnqn
for NQN nqn.2014-08.org.nvmexpress:uuid:4c4c4544-0056-4c10-8058-b7c04f383432.
[  291.155204] nvmet: ctrl 1 keep-alive timer (5 seconds) expired!
[  291.162238] nvmet: ctrl 1 fatal error occurred!--

Will have another look.