Re: [Xen-users] Xen backups using LVM Snapshots

[Lists <lists@xxxxxxxxxxxxx>]

----- "Javier Guerra Giraldez" <javier@xxxxxxxxxxx> wrote:

> On Thursday 16 October 2008, Mike Lovell wrote:
> > This isn't sounding quite right to me. According to LVM Howto on
> > tldp.org a snapshot is "exact copy of a logical volume, frozen at
> some
> > point in time."
> (http://tldp.org/HOWTO/LVM-HOWTO/snapshotintro.html).
> 
> right; but if that "point in time" was while it was mounted, the
> snapshot is 
> exactly that: a non-unmounted volume.  just the same you would've got
> if you 
> had pulled the plug on a running machine.  when you mount the
> snapshot, pay 
> attention to warning messages, they'll tell the volume was dirty and
> run 
> fsck.
> 
> -- 
> Javier
> 

It should not be too hard to test and get a definite answer.  I don't have 
access to my box right now but all we need to do I suspect, is create a 
snapshot.  Stop the DomU.  Point the cfg file to the snapshot and start the 
DomU.  If we get FS warnings, Javier is right...

--
eco

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