From: Michael Breuer <mbreuer@majjas.com>
To: linux-kernel@vger.kernel.org
Subject: Re: Regression: hung task during raid rebuild 2.6.33 rc5 was: Re: 2.6.33RC3 hung task - jbd2/dm-1-8 (during raid rebuild)
Date: Sat, 30 Jan 2010 14:26:51 -0500 [thread overview]
Message-ID: <4B6487FB.2010508@majjas.com> (raw)
In-Reply-To: <4B6486A7.8030404@majjas.com>
On 1/30/2010 2:21 PM, Michael Breuer wrote:
> On 1/10/2010 4:47 PM, Michael Breuer wrote:
>> System crashed (watchdog reset).
>>
>> Was doing a raid rebuild at the time (raid6).
>>
>> I typed, 'yumdownloader --source virtlib' ... system froze, then
>> rebooted on the watchdog reset.
>>
>> I've attached the log extract from the event as well as dmesg.
>>
>>
> Hit this again - system doesn't crash now - just get the hung task
> warning (log extract attached). System seems to keep running (albeit
> the rebuild is incredibly slow on 2.6.33 rc5 - approx 6500K/sec vs.
> about 80,000K/sec on 2.6.32.4.
>
> Looks like it may be triggered by disk io during the rebuild. This
> time I had typed, "sync." "sync" hung for a long while but did
> eventually complete.
Also - when I attempted to reboot, I got the following (only on an ssh
terminal window - nothing in dmesg or log after reboot):
Message from syslogd@mail at Jan 30 14:16:42 ...
kernel:------------[ cut here ]------------
Message from syslogd@mail at Jan 30 14:16:42 ...
kernel:invalid opcode: 0000 [#1] SMP
Message from syslogd@mail at Jan 30 14:16:42 ...
kernel:last sysfs file: /sys/devices/virtual/block/md0/size
Message from syslogd@mail at Jan 30 14:16:42 ...
kernel:Stack:
Message from syslogd@mail at Jan 30 14:16:42 ...
kernel:Call Trace:
Message from syslogd@mail at Jan 30 14:16:42 ...
kernel:Code: 41 5f c9 c3 55 48 89 e5 41 55 41 54 53 48 83 ec 38 0f 1f
44 00 00 48 89 fb f6 46 20 01 0f 84 26 01 00 00 8b 47 38 83 f8 01 75 04
<0f> 0b eb fe 45 31 e4 83 f8 02 75 2a c7 47 38 00 00 00 00 f0 80
[ends here]
next prev parent reply other threads:[~2010-01-30 19:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-10 21:47 2.6.33RC3 hung task - jbd2/dm-1-8 (during raid rebuild) Michael Breuer
2010-01-30 19:21 ` Regressionhung task during raid rebuild 2.6.33 rc5 was: " Michael Breuer
2010-01-30 19:26 ` Michael Breuer [this message]
2010-01-30 19:57 ` Rafael J. Wysocki
2010-01-30 20:00 ` Michael Breuer
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