From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: INFO: task journal:337 blocked for more than 120 seconds
Date: Fri, 02 Oct 2009 12:13:26 -0700
Message-ID: <4AC650D6.5040800@goop.org>
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Cc: virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
	linux-kernel@vger.kernel.org, Jens Axboe <jens.axboe@oracle.com>,
	Kevin Bowling <kevinb@analograils.com>,
	Andrew Jones <drjones@redhat.com>
To: Shirley Ma <mashirle@us.ibm.com>
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On 10/02/09 12:06, Shirley Ma wrote:
> On Fri, 2009-10-02 at 11:30 -0700, Jeremy Fitzhardinge wrote:
>   
>> I'm assuming from the lists you've posted to that this is under KVM? 
>> What disk drivers are you using (virtio or emulated)?
>>
>> Can you get a full stack backtrace of kjournald?
>>     
> Yes, it's under KVM, disk driver is virtio. Since the io has issue, the
> stack can't be saved on the disk. I have the image file attached here.
>   

Ah, thank you.  The backtrace does indeed look very similar.

(BTW, you could get a serial console with "qemu-kvm -nographic -append
console=ttyS0 ...")

    J