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From: Ivan Kozik <ivan@ludios.org>
To: Ming Lei <ming.lei@redhat.com>
Cc: axboe@kernel.dk, paolo.valente@linaro.org,
	linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
	oleksandr@natalenko.name
Subject: Re: blk-mq + bfq IO hangs after writing partition table
Date: Fri, 1 Dec 2017 14:46:39 +0000	[thread overview]
Message-ID: <CAKyntiKzyPK7MVg-WqOhzLsVx5o2zw+OMp1Bw_wTCWa8-T5kdQ@mail.gmail.com> (raw)
In-Reply-To: <20171201133546.GA11483@ming.t460p>

On Fri, Dec 1, 2017 at 1:35 PM, Ming Lei <ming.lei@redhat.com> wrote:
> Basically all IO hang happen inside get_request(), and seems this issue
> isn't related with recent change in V4.15, could you run V4.14 to see if
> there is such issue?

I tried several times and I could not reproduce the problem on linus's v4.14.

Also, while testing, I noticed that udev rules can switch out the IO
scheduler after gdisk writes partitions, but this appears to be
unrelated to the problem, just something to remember when testing.

Thanks,

Ivan

  reply	other threads:[~2017-12-01 14:46 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-01  6:52 blk-mq + bfq IO hangs after writing partition table ivan
2017-12-01  8:50 ` Ming Lei
2017-12-01 12:18   ` Ivan Kozik
2017-12-01 13:35     ` Ming Lei
2017-12-01 14:46       ` Ivan Kozik [this message]
2017-12-01 15:33         ` Ming Lei

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