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Re: [Xen-users] Backup domU

To: "Rainer Sokoll" <rainer@xxxxxxxxxx>
Subject: Re: [Xen-users] Backup domU
From: "Kalil Costa - Brasilsite" <kalil@xxxxxxxxxxxxxxxxx>
Date: Sun, 10 Jul 2011 16:07:20 -0300 (BRT)
Cc: Xen User-List <xen-users@xxxxxxxxxxxxxxxxxxx>
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Hi all,

Why my question ... see the problem

I Use LVM on Domain0 and create an LVM for each domU, the installation
also create partitions in LVM.

When I try to access a partition for backup domU can't, so do i create a
physical partition /boot and the root '/' in LVM and it can't mount the
partition in domainU for backup.

Could this be the best way to work with LVM in domU or is it better to
create the physical partitions in domU /dev /xvda 'etc. ..? How do you do?

> Am 09.07.2011 um 12:17 schrieb Andrew McGlashan:
>> The only issue with rsync with rsnapshot from what I can see, is for
>> very large files that change frequently.  You might end up having loads
>> of copies of these large files and that would be painful in terms of
>> storage and transfer.  Take a 2TB Oracle datafile for instance; don't
>> want to touch that right now with this method, but Oracle has other
>> backup methods anyway .....
> Yes, rsnapshot does deduplication by using hard links. This is file based
> deduplication; what we really want is deduplication on block level, like
> e.g. ZFS does.
> For Linux, I came across lessfs
> (http://sourceforge.net/projects/lessfs/files/).
> Anyone here who can provide experiences with lessfs?
> Rainer
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