[dm-devel] [PATCH] dm-thinp: new device mapper target to thin provision storage
Hannes Reinecke
hare at suse.de
Wed Sep 29 06:29:34 UTC 2010
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.
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare at suse.de +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)
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