There are three LVMs provided by XenServer 5.6 to the VM:

xvda1   10GB    Operating system (24% used)
xvdb1   536MB   Swap partition
xvbc1   214GB   backup storage (72% used)

I'm not sure how to tell what a "fragmented VM image" would look like.

Jim

-----Original Message-----
From: Les Mikesell [mailto:lesmikesell AT gmail DOT com] 
Sent: Wednesday, September 07, 2011 3:10 PM
To: General list for user discussion, questions and support
Subject: Re: [BackupPC-users] Backups very slow after upgrade to squeeze

On Wed, Sep 7, 2011 at 1:19 PM, James L. Evans <jle AT techatl DOT com> wrote:
> I have been running backuppc 3.1.0-4 on Debian lenny (Xen VM) for several 
> years with no problems.
>
> Suddenly, after upgrading to squeeze and backuppc 3.1.0-9, nightly backup 
> take very long (50 times) or never finish. If I start them manually from the 
> web interface they run just fine.
>
> Also, when the unfinished backups are still running, the machine responds 
> very slowly even though the backuppc processes are using less than 1% of the 
> CPU.
>
> Any suggestions?
>
> Jim
>
> I'm also seeing some messages like the following the kernal logs:
>
> Sep  7 03:14:13 backup kernel: [57960.076042] INFO: task kjournald:384 
> blocked for more than 120 seconds.

What's the underlying physical disk look like?   Could you have
fragmented the VM image in the upgrade process?

-- 
  Les Mikesell
    lesmikesell AT gmail DOT com

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Virtualization increases hardware utilization and delivers a new level of
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------------------------------------------------------------------------------
Using storage to extend the benefits of virtualization and iSCSI
Virtualization increases hardware utilization and delivers a new level of
agility. Learn what those decisions are and how to modernize your storage 
and backup environments for virtualization.
http://www.accelacomm.com/jaw/sfnl/114/51434361/
_______________________________________________
BackupPC-users mailing list
BackupPC-users AT lists.sourceforge DOT net
List:    https://lists.sourceforge.net/lists/listinfo/backuppc-users
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