From: Bart Van Assche <Bart.VanAssche@wdc.com>
To: "ming.lei@redhat.com" <ming.lei@redhat.com>
Cc: "dm-devel@redhat.com" <dm-devel@redhat.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"loberman@redhat.com" <loberman@redhat.com>
Subject: Re: [v4.13-rc BUG] system lockup when running big buffered write(4M) to IB SRP via mpath
Date: Wed, 23 Aug 2017 15:12:42 +0000 [thread overview]
Message-ID: <1503501161.2484.3.camel@wdc.com> (raw)
In-Reply-To: <20170823113526.GA8130@ming.t460p>
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WARNING: multiple messages have this Message-ID (diff)
From: Bart Van Assche <Bart.VanAssche@wdc.com>
To: "ming.lei@redhat.com" <ming.lei@redhat.com>
Cc: "dm-devel@redhat.com" <dm-devel@redhat.com>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"loberman@redhat.com" <loberman@redhat.com>
Subject: Re: [v4.13-rc BUG] system lockup when running big buffered write(4M) to IB SRP via mpath
Date: Wed, 23 Aug 2017 15:12:42 +0000 [thread overview]
Message-ID: <1503501161.2484.3.camel@wdc.com> (raw)
In-Reply-To: <20170823113526.GA8130@ming.t460p>
On Wed, 2017-08-23 at 19:35 +0800, Ming Lei wrote:
> soft lockup still can be observed easily with patch d4acf3650c7c(
> block: Make blk_mq_delay_kick_requeue_list() rerun the queue at a quiet time),
> but no hard lockup.
Hello Ming,
I never claimed that commit d4acf3650c7c was a full solution to avoid these
soft lockups. I assume these results mean that patch series "[PATCH 0/7]
Device mapper and dm-mpath fixes" was not applied to the kernel used in your
tests? A colleague of you has reported that that patch series is sufficient
to avoid these soft lockups. See also
https://www.redhat.com/archives/dm-devel/2017-August/msg00122.html.
Bart.
next prev parent reply other threads:[~2017-08-23 15:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-08 14:17 [v4.13-rc BUG] system lockup when running big buffered write(4M) to IB SRP via mpath Ming Lei
2017-08-08 14:17 ` Ming Lei
2017-08-08 23:10 ` Bart Van Assche
2017-08-08 23:10 ` Bart Van Assche
2017-08-09 0:11 ` Laurence Oberman
2017-08-09 2:28 ` Laurence Oberman
2017-08-09 16:43 ` Laurence Oberman
2017-08-09 17:10 ` Bart Van Assche
2017-08-09 17:10 ` Bart Van Assche
2017-08-23 11:35 ` Ming Lei
2017-08-23 12:46 ` Ming Lei
2017-08-23 12:46 ` Ming Lei
2017-08-23 15:12 ` Bart Van Assche [this message]
2017-08-23 15:12 ` Bart Van Assche
2017-08-23 16:03 ` Ming Lei
2017-08-23 23:51 ` Mike Snitzer
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