From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: Re: [PATCH] dm-thinp: new device mapper target to thin provision storage Date: Wed, 29 Sep 2010 08:29:34 +0200 Message-ID: <4CA2DCCE.3070905@suse.de> References: <1285706977.22966.20.camel@o> <4CA261C5.7070005@cfl.rr.com> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <4CA261C5.7070005@cfl.rr.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: device-mapper development Cc: heinzm@redhat.com, agk@redhat.com List-Id: dm-devel.ids 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@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N=FCrnberg GF: Markus Rex, HRB 16746 (AG N=FCrnberg)