From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx13.extmail.prod.ext.phx2.redhat.com [10.5.110.18]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id p3MHMhAR005075 for ; Fri, 22 Apr 2011 13:22:43 -0400 Received: from abpni.co.uk (host-92-27-106-173.static.as13285.net [92.27.106.173] (may be forged)) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p3MHMfkS012092 for ; Fri, 22 Apr 2011 13:22:42 -0400 Message-ID: <4DB1B960.8040807@abpni.co.uk> Date: Fri, 22 Apr 2011 18:22:40 +0100 From: Jonathan Tripathy MIME-Version: 1.0 References: <4DB1ACBB.4040508@abpni.co.uk> <4DB1AFF1.7000800@abpni.co.uk> In-Reply-To: <4DB1AFF1.7000800@abpni.co.uk> Content-Transfer-Encoding: 7bit Subject: Re: [linux-lvm] SAN 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"; format="flowed" To: linux-lvm@redhat.com On 22/04/2011 17:42, Jonathan Tripathy wrote: > > On 22/04/2011 17:38, Stuart D. Gathman wrote: >> On Fri, 22 Apr 2011, Jonathan Tripathy wrote: >> >>> What is the best way to deploy LVM in such a way that multiple >>> servers could access the LVs? Really what I'm looking for is a >>> "common VG" for all of our servers. Note though that only one server >>> will actually access each LV, however it would be cool if another >>> server could make a snapshot to perform an rsync backup. >> >> This is what cluster LVM is for. It provides a locking mechanism to >> avoid conflicting changes to LVM metadata. >> > I'm a little confused on where CLVM fits into the "big picture". Let's > say I have one SAN server, and 10 Xen Servers. Where do I install CLVM? > > Am I correct in saying that I only need to install CLVM on my Xen nodes? Assuming that my SAN server is just a standard iSCSI server exporting a few targets. I would probably only have 1 LUN per vg (hense 1 PV per vg). Is that correct?