From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx12.extmail.prod.ext.phx2.redhat.com [10.5.110.17]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q4MFRwC1024415 for ; Tue, 22 May 2012 11:27:58 -0400 Received: from mail-pb0-f46.google.com (mail-pb0-f46.google.com [209.85.160.46]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q4MFRsq6000579 for ; Tue, 22 May 2012 11:27:58 -0400 Received: by mail-pb0-f46.google.com with SMTP id rp8so11592558pbb.33 for ; Tue, 22 May 2012 08:27:57 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <53772.172.16.0.29.1337698212.squirrel@beer.org.uk> References: <53772.172.16.0.29.1337698212.squirrel@beer.org.uk> Date: Tue, 22 May 2012 10:27:57 -0500 Message-ID: From: Les Mikesell Subject: Re: [linux-lvm] Fun and games with mirroring Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lvm@beer.org.uk, LVM general discussion and development On Tue, May 22, 2012 at 9:50 AM, Vic wrote: > > > p.s. The reason I want to do this with LVM mirrors rather than MD RAID is > that this is potentially a very useful way of grabbing a backup snapshot > of a machine prior to some risky operation - it allows me to "fork" a > machine onto two sets of media. But if it leaves the result unbootable, > that's something of a problem... > How is it different/better than 'mdadm --fail' ing a member out of an MD raid1 set as a temporary snapshot? -- Les Mikesell lesmikesell@gmail.com