From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=46440 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Oup4I-0002fj-G5 for qemu-devel@nongnu.org; Sun, 12 Sep 2010 12:06:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Oup4F-0005j5-5h for qemu-devel@nongnu.org; Sun, 12 Sep 2010 12:06:14 -0400 Received: from mx1.redhat.com ([209.132.183.28]:13147) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Oup4E-0005is-Tt for qemu-devel@nongnu.org; Sun, 12 Sep 2010 12:06:11 -0400 Message-ID: <4C8CFA6C.6080202@redhat.com> Date: Sun, 12 Sep 2010 18:06:04 +0200 From: Avi Kivity MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH 1/3] block: allow migration to work with image files References: <1284213896-12705-1-git-send-email-aliguori@us.ibm.com> <1284213896-12705-2-git-send-email-aliguori@us.ibm.com> <4C8CAD7C.5020102@redhat.com> <4C8CD06A.7060507@codemonkey.ws> <4C8CD57D.60508@redhat.com> <4C8CF122.6080000@codemonkey.ws> In-Reply-To: <4C8CF122.6080000@codemonkey.ws> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: Kevin Wolf , qemu-devel@nongnu.org, Stefan Hajnoczi , Juan Quintela On 09/12/2010 05:26 PM, Anthony Liguori wrote: > On 09/12/2010 08:28 AM, Avi Kivity wrote: >> On 09/12/2010 03:06 PM, Anthony Liguori wrote: >>> >>> Backing files and logical size shouldn't change during live migration. >> >> Why not? > > To make our lives easier. It means management needs to block volume resize while a live migration takes place. Since live migration is typically done by the system automatically, while volume resize happens in response to user request, this isn't a good idea. Both in terms of user experience, and in terms of pushing more complexity to management. -- error compiling committee.c: too many arguments to function