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Message-ID: <20220120162949.5y6t5u6dbtxw2w5y@carbon.lan>
Date: Thu, 20 Jan 2022 17:29:49 +0100
From: Daniel Wagner <dwagner@...e.de>
To: Ming Lei <ming.lei@...hat.com>
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
Jens Axboe <axboe@...nel.dk>, Hannes Reinecke <hare@...e.de>
Subject: Re: [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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