From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Mason Subject: Re: Btrfs and raw zvol-like partition Date: Mon, 13 Apr 2009 09:56:26 -0400 Message-ID: <1239630986.24841.18.camel@think.oraclecorp.com> References: <49E197BC.40703@enix.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: linux-btrfs@vger.kernel.org To: sw@enix.org Return-path: In-Reply-To: <49E197BC.40703@enix.org> List-ID: On Sun, 2009-04-12 at 09:26 +0200, S=C3=A9bastien Wacquiez wrote: > Hi, >=20 > A nice feature is ZFS is the "ZVOL" layer, that permit you to export=20 > (directly) a raw device from your zfs pool of disc, with the benefit = of=20 > powerful (growing!) snapshot and easy raid management from zfs. It's=20 > particulary usefull when you use it with virtual server, allowing you= to=20 > centralize all your backup problematic, etc >=20 > Does btrfs plan to support this kind of feature ? (please, don't tell= me=20 > that lvm do, lvm just sucks when you make a snapshot of your disk, an= d=20 > lack of the "growing", commit, rollback, diffsend feature). >=20 I've always been interested in a btrfs export via loop or dm. The problem with loop is that it needs to be switched over to O_DIRECT or something similar. At any rate, it would be a fun project for someone looking to know dm better. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html