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From: Yan Li <elliot.li.tech@gmail.com>
To: wangyugui@e16-tech.com
Cc: linux-btrfs@vger.kernel.org
Subject: Re: autodefrag causing freezes under heavy writes?
Date: Fri, 9 Jul 2021 12:01:39 -0700	[thread overview]
Message-ID: <CALc-jWwAW9yaoHgXvWykUiovYKCPzv3SuZVjBpsmp8i3CdgUEw@mail.gmail.com> (raw)
In-Reply-To: <20210706161908.BE32.409509F4@e16-tech.com>

On Tue, Jul 6, 2021 at 1:19 AM Wang Yugui <wangyugui@e16-tech.com> wrote:
> The message 'blocked for more than 120 seconds.' show which job is
> blocked.
>
> Is there some message like 'watchdog: BUG: soft lockup - CPU#XX stuck for XXs!'?
> that show which job blocked others.

Nope. There was no such a message.

> so a full dmesg is useful.

Here you go
https://pastebin.com/TwChmFmC

> If there is no good info in the full dmesg, the call trace of 'freeze'
> status is useful too.
>
> echo "t" >/proc/sysrq-trigger  will output all jobs call stace.

I'll try next time. I can't reboot this system very often, since it's
a production system.

Thanks!

--
Yan

      parent reply	other threads:[~2021-07-09 19:01 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-06  3:56 autodefrag causing freezes under heavy writes? Yan Li
2021-07-07 19:00 ` David Sterba
2021-07-09 19:10   ` Yan Li
     [not found] ` <20210706161908.BE32.409509F4@e16-tech.com>
2021-07-09 19:01   ` Yan Li [this message]

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