Bug#517449: Found in 2.6.30

[dann frazier <dannf@debian.org>]

On Fri, Aug 07, 2009 at 08:25:56PM +0100, Berni Elbourn wrote:
> Grim news there is the same behaviour using 2.6.30...
>
> ski:~# cat /proc/version
> Linux version 2.6.30-bpo.1-amd64 (Debian 2.6.30-5~bpo50+1)  
> (nobse@debian.org) (gcc version 4.3.2 (Debian 4.3.2-1.1) ) #1 SMP Wed  
> Aug 5 11:07:47 UTC 2009
>
> And logs:
>
> Aug  6 22:54:39 ski kernel: [ 2160.704087] INFO: task md2_resync:4371  
> blocked for more than 120 seconds.
> Aug  6 22:54:39 ski kernel: [ 2160.704270] INFO: task partimage:6788  
> blocked for more than 120 seconds.
> Aug  6 22:54:39 ski kernel: [ 2160.704418] INFO: task lvs:6911 blocked  
> for more than 120 seconds.
> Aug  6 22:56:39 ski kernel: [ 2280.704152] INFO: task partimage:6788  
> blocked for more than 120 seconds.
> Aug  6 22:56:39 ski kernel: [ 2280.704329] INFO: task lvs:6911 blocked  
> for more than 120 seconds.
>
> Looking back over things (for my systems) this bug is exposed when a  
> raid 1 resync is in progress and partimage is taking a backup of one of  
> the logical volume snap shots on the same physical disk.
>
> Using dd instead of partimage in the backup script does not expose the  
> bug - even when using the 2.6.26-17 kernel. I have lots more testing to  
> do...more soon.

Interesting. I would suggest testing a snapshot of the 2.6.31
rc's. They should install fine on lenny, see
http://wiki.debian.org/DebianKernel.

If you are still able to reprodcue, your best bet is probably to file
a bug against the upstream kernel at:
 http://bugzilla.kernel.org

> Berni
>
> PS:
>
> lvm2: 2.02.39-7
> Part image: 0.6.7-1
>
>
>
>

-- 
dann frazier