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Re: [Xen-users] Can I mount the xen image file while vm is running

To: mukul <mkl1983@xxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Can I mount the xen image file while vm is running
From: "Fajar A. Nugraha" <fajar@xxxxxxxxx>
Date: Thu, 19 Aug 2010 19:40:22 +0700
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On Thu, Aug 19, 2010 at 6:26 PM, mukul <mkl1983@xxxxxxxxxxxxxx> wrote:
> If i mount one of the images manually while the machine is running will it 
> make any differnce to the
> Running VM  ? ?

That will most likely cause data corruption.
You need something like LVM snapshot (if using phy:/ with LVM-backed
storage) or use some storage-specific snapshot method (like vhd
snapshot, which is not available on Centos 5.5:
http://lxr.xensource.com/lxr/source/tools/blktap2/README). If you have
snapshot (using whatever method), then you should be able to safely
mount the snapshot on dom0, while domU continues to access the
original storage.


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