Re: [Xen-users] iSCSI Volumes and Xen

["Matthew Law" <matt@xxxxxxxxxxxxxxxxxx>]

On Thu, January 14, 2010 2:22 pm, John Madden wrote:
> Keep in mind that snapshots are not backups.  There's no way that
> snapshot would be consistent unless you were also doing something on the
> domU to stop and flush all i/o and clear the scsi caches.

Understood.  Does suspending the domU do the job?  I wanted to:

- 'xm save' the domU
- snapshot the domU's zvol on the storage server
- 'xm restore' the domU

this will give me a consistent snapshot, right?  I know this means the
domU will be unavailable for the duration of the snapshot.  In my
experience zfs snapshots are very quick indeed - much quicker than lvm.

Is the only backup option for a running domU to run a conventional backup
client within it, such as bacula?

Thanks,

Matt.


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