linux-kernel - Re: INFO: task journal:337 blocked for more than 120 seconds

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Message-ID: <20091001132012.GA16975@amt.cnet>
Date:	Thu, 1 Oct 2009 10:20:12 -0300
From:	Marcelo Tosatti <mtosatti@...hat.com>
To:	Shirley Ma <mashirle@...ibm.com>
Cc:	virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: INFO: task journal:337 blocked for more than 120 seconds

On Wed, Sep 30, 2009 at 02:11:52PM -0700, Shirley Ma wrote:
> Hello all,
> 
> Anybody found this problem before? I kept hitting this issue for 2.6.31
> guest kernel even with a simple network test.
> 
> INFO: task kjournal:337 blocked for more than 120 seconds.
> "echo 0 > /proc/sys/kernel/hung_task_timeout_sec" disables this message.
> 
> kjournald	D 00000041	0	337	2 0x00000000
> 
> My test is totally being blocked.

I've hit this in the past with ext3, mounting with data=writeback made it
disappear.

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