[dm-devel] [PATCH] dm-thinp: new device mapper target to thin provision storage
Heinz Mauelshagen
heinzm at redhat.com
Wed Sep 29 11:25:36 UTC 2010
On Wed, 2010-09-29 at 08:29 +0200, Hannes Reinecke wrote:
> Phillip Susi wrote:
> > On 9/28/2010 4:49 PM, Heinz Mauelshagen wrote:
> >> These are 2 new device mapper targets "thinp" and "thinp-dev"
> >> implemented in one module, which allow for thin provisioning of storage
> >> on a single host from a storage pool to an arbitrary amount of devices.
> >
> > How is this different than snapshotting a zero target?
> >
> Main difference is that you actually can free up space.
> You can't with snapshotting as then a rollback
> becomes impossible.
>
Yes, that's right.
Heinz
> Cheers,
>
> Hannes
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