From: Phillip Susi <psusi@cfl.rr.com>
To: heinzm@redhat.com, device-mapper development <dm-devel@redhat.com>
Cc: agk@redhat.com
Subject: Re: [PATCH] dm-thinp: new device mapper target to thin provision storage
Date: Tue, 28 Sep 2010 17:44:37 -0400 [thread overview]
Message-ID: <4CA261C5.7070005@cfl.rr.com> (raw)
In-Reply-To: <1285706977.22966.20.camel@o>
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?
> +Create an ext4 filesystem on the thin provisioned device:
> +mkfs -t ext4 /dev/mapper/thinp1
FYI, that tends to spend a lot of time writing hundreds of mb of zeros
to the inode tables, allocating chunks from the backing store. You
might want to add -E lazy_itable_init to stop that.
next prev parent reply other threads:[~2010-09-28 21:44 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 [this message]
2010-09-29 6:29 ` Hannes Reinecke
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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