Messages in this thread | | | Date | Tue, 6 Jul 2021 16:45:30 +0800 | From | Ming Lei <> | Subject | Re: [PATCH 2/2] nvme-fc: Wait with a timeout for queue to freeze |
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On Tue, Jul 06, 2021 at 10:10:10AM +0200, Daniel Wagner wrote: > On Tue, Jul 06, 2021 at 03:29:11PM +0800, Ming Lei wrote: > > > and this seems to confirm, no I/O in flight. > > > > What is the output of the following command after the hang is triggered? > > > > (cd /sys/kernel/debug/block/nvme0n1 && find . -type f -exec grep -aH . {} \;) > > > > Suppose the hang disk is nvme0n1. > > see attachement > > > No, percpu_ref_is_zero() is fine to be called in atomic mode. > > Okay, that is what I hoped for :)
> /sys/kernel/debug/block/nvme0c0n1# find . -type f -exec grep -aH . {} \;
It is the mpath device's debugfs, what is output for the nvmef's debugfs?
Thanks, Ming
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