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SubjectRe: [PATCH 2/2] block: hold queue lock while iterating in diskstats_show
On Thu, Jan 20, 2022 at 11:37:00PM +0800, Ming Lei wrote:
> Seems more likely nvme recovery issue, tags is changed even though
> ->q_usage_counter is grabbed in blk_mq_queue_tag_busy_iter(), which is
> added in v4.19.
>
> You may check dmesg log and see if there is any nvme error recovery info.

Thanks for the tip. It's likely that a recovery is running although
there is no entry in the logs. At least I have an idea what could be the
problem here.

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