From: Hannes Reinecke <hare@suse.de>
To: device-mapper development <dm-devel@redhat.com>
Cc: heinzm@redhat.com, agk@redhat.com
Subject: Re: [PATCH] dm-thinp: new device mapper target to thin provision storage
Date: Wed, 29 Sep 2010 08:29:34 +0200 [thread overview]
Message-ID: <4CA2DCCE.3070905@suse.de> (raw)
In-Reply-To: <4CA261C5.7070005@cfl.rr.com>
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 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)
next prev parent reply other threads:[~2010-09-29 6:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-28 20:49 [PATCH] dm-thinp: new device mapper target to thin provision storage Heinz Mauelshagen
2010-09-28 21:44 ` Phillip Susi
2010-09-29 6:29 ` Hannes Reinecke [this message]
2010-09-29 11:25 ` Heinz Mauelshagen
2010-09-29 11:25 ` Heinz Mauelshagen
2010-09-29 13:41 ` Phillip Susi
2010-09-29 15:20 ` Heinz Mauelshagen
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