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From: Song Liu <song@kernel.org>
To: Georgi Nikolov <gnikolov@icdsoft.com>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Pausing md check hangs
Date: Tue, 28 Jan 2020 10:04:00 -0800	[thread overview]
Message-ID: <CAPhsuW4JJiDroE33m0=XE9PxtUOncK3--waY_zxxbAT9j+1m6g@mail.gmail.com> (raw)
In-Reply-To: <ac3ae81d-8dad-8b4e-bc61-fc37514e3929@icdsoft.com>

On Tue, Jan 28, 2020 at 12:11 AM Georgi Nikolov <gnikolov@icdsoft.com> wrote:
>
> Yes the kernel is 4.19.67-2+deb10u2. I have tried with 5.4.8-1~bpo10+1
> and same thing happened.
> Before this i have used same thing for a long time with kernel 4.9.189-3.
> It happens most often when there is some heavy IO.

Thanks for the information. I suspect the hang is waiting for md_lock().

Could you please dump the mdX_raid6 stack when the hang happens?
You can do it by:

    cat /proc/$(pidof mdX_raid6)/stack

Thanks,
Song

  reply	other threads:[~2020-01-28 18:04 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-27 13:42 Pausing md check hangs Georgi Nikolov
2020-01-27 17:11 ` Song Liu
2020-01-28  8:11   ` Georgi Nikolov
2020-01-28 18:04     ` Song Liu [this message]
2020-02-01 14:26       ` Georgi Nikolov
2020-02-03 23:31         ` Song Liu
2020-02-17 12:14           ` Georgi Nikolov
2020-02-17 13:15           ` Georgi Nikolov
2020-02-25  2:10 ` Guoqing Jiang
2020-03-10 15:30   ` Georgi Nikolov
2020-03-10 20:27     ` Guoqing Jiang
  -- strict thread matches above, loose matches on Subject: below --
2020-01-27  9:52 Georgi Nikolov

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