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

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Message-ID: <4AC650D6.5040800@goop.org>
Date:	Fri, 02 Oct 2009 12:13:26 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Shirley Ma <mashirle@...ibm.com>
CC:	virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Jens Axboe <jens.axboe@...cle.com>,
	Kevin Bowling <kevinb@...lograils.com>,
	Andrew Jones <drjones@...hat.com>
Subject: Re: INFO: task journal:337 blocked for more than 120 seconds

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
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