From: Omar Sandoval <osandov@osandov.com>
To: Bart Van Assche <Bart.VanAssche@wdc.com>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>
Subject: Re: v4.16-rc2: I/O hang with dm-rq + Kyber
Date: Thu, 22 Feb 2018 14:42:08 -0800 [thread overview]
Message-ID: <20180222224208.GA20710@vader.DHCP.thefacebook.com> (raw)
In-Reply-To: <1519333819.2861.17.camel@wdc.com>
On Thu, Feb 22, 2018 at 09:10:23PM +0000, Bart Van Assche wrote:
> Hello Omar,
>
> I/O hangs if I run the following command on top of kernel v4.16-rc2 + the
> ib_srpt patch that adds RDMA/CM support:
>
> srp-test/run_tests -c -d -r 10 -t 02-mq -e kyber
>
> This does not happen with the deadline scheduler nor without a scheduler.
> This test passed a few months ago. I have attached the output of the following
> command to this e-mail:
>
> (cd /sys/kernel/debug/block && grep -r .) | grep -v /poll_stat
>
> Can you have a look?
>
> Thanks,
>
> Bart.
Hey, Bart, thanks for the report. Can you clarify what the device
topology is w.r.t. the dm devices?
next prev parent reply other threads:[~2018-02-22 22:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-22 21:10 v4.16-rc2: I/O hang with dm-rq + Kyber Bart Van Assche
2018-02-22 22:42 ` Omar Sandoval [this message]
2018-02-22 23:22 ` Bart Van Assche
2018-02-23 16:26 ` Ming Lei
2018-02-23 17:13 ` Bart Van Assche
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