[dm-devel] [v4.13-rc BUG] system lockup when running big buffered write(4M) to IB SRP via mpath
Bart Van Assche
Bart.VanAssche at wdc.com
Wed Aug 23 15:12:42 UTC 2017
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.
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