On Mon, Feb 27, 2017 at 07:27:51PM +0200, Sagi Grimberg wrote: > OK, I think we can get it for fabrics too, need to figure out how to > handle it there too. > > Do you have a reproducer?
To repro, I have to run a buffered writer workload then put the system into S3. This fio job seems to reproduce for me: fio --name=global --filename=/dev/nvme0n1 --bsrange=4k-128k --rw=randwrite --ioengine=libaio --iodepth=8 --numjobs=8 --name=foobar I use rtcwake to test suspend/resume: rtcwake -m mem -s 10 Without the patch we'll get stuck after "Disabling non-boot CPUs ..." when blk-mq waits to freeze some entered queues after nvme was disabled.
