[Xen-users] Re: Xen, LVM and snapshots

[Aleksandar Ivanisevic <aleksandar@xxxxxxxxxxxxx>]

"Morten W. Petersen" <morten@xxxxxxxxxxxxxx> writes:

> Hi :)
>
> We're considering using snapshots of LVM logical volumes as a backup
> feature, that is, having domU instances running on each of their own
> logical volume, and then in the dom0, create snapshots and take backups.
>
> Has anyone else tried this?  Is it safe?

It is safe, but be aware that the mere fact that you have a snapshot
active can slow down write speeds to the volume by a factor of 10.

I got bitten by this, but I also have DRBD in play, so I don't know
for sure if its a xem, drbd or lvm issue, or the interaction between
the three.

-- 
To sto si frustriran, zavidan tko zna na cemu i sto ne vidis dalje od
svoje guzice je tuzno. Da onda barem imas toliko samokontrole da
sutis umjesto da pravis budalu od sebe... izgleda da si prestar da se
promjenis na bolje. - Davor Pasaric, hr.comp.mac


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