From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>
Subject: Re: Hang with blk-mq map series (block/008)
Date: Wed, 11 Apr 2018 10:02:53 +0800 [thread overview]
Message-ID: <20180411020252.GA4494@ming.t460p> (raw)
In-Reply-To: <d4cafa94-919c-e83d-eb91-d10dc06fc515@kernel.dk>
On Tue, Apr 10, 2018 at 09:51:41AM -0600, Jens Axboe wrote:
> Hi Ming,
>
> Ran the above blktests on the current tree, and we end up getting
> a hang that we never recover from. There's on request perpetually
> stuck:
>
> root@dell:/sys/kernel/debug/block/nvme0n1/hctx2# cat busy
> 000000005e2b09fe {.op=READ, .cmd_flags=, .rq_flags=DONTPREP|IO_STAT|STATS, .state=in_flight, .tag=313, .internal_tag=-1}
>
> and no amount of manual running or kicking the queue will bring it
> back to life. If I run it on 'master', it works fine.
>
> Did you run blktests on your series?
Not yet.
Will take a look at it, but this seems related with driver, since
the request has been submitted to hardware already.
Thanks,
Ming
next prev parent reply other threads:[~2018-04-11 2:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-10 15:51 Hang with blk-mq map series (block/008) Jens Axboe
2018-04-11 2:02 ` Ming Lei [this message]
2018-04-11 2:08 ` Jens Axboe
2018-04-11 2:30 ` Ming Lei
2018-04-11 2:33 ` Jens Axboe
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