From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:49394) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QKXu3-0004Ln-RY for qemu-devel@nongnu.org; Thu, 12 May 2011 11:34:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QKXu3-0001jd-1A for qemu-devel@nongnu.org; Thu, 12 May 2011 11:34:15 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48505) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QKXu2-0001jX-QA for qemu-devel@nongnu.org; Thu, 12 May 2011 11:34:14 -0400 Message-ID: <4DCBFDB2.6010801@redhat.com> Date: Thu, 12 May 2011 17:33:06 +0200 From: Jes Sorensen MIME-Version: 1.0 References: <4DC7EEB0.3040007@redhat.com> In-Reply-To: <4DC7EEB0.3040007@redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [RFC] live snapshot, live merge, live block migration List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: dlaor@redhat.com Cc: Kevin Wolf , Anthony Liguori , Jagane Sundar , Marcelo Tosatti , qemu-devel , Avi Kivity , Stefan Hajnoczi On 05/09/11 15:40, Dor Laor wrote: > Summary: > * We need Marcelo's new (to come) block copy implementation > * should work in parallel to migration and hotplug > * General copy on read is desirable > * Live snapshot merge to be implemented using block copy > * Need to utilize a remote block access protocol (iscsi/nbd/other) > Which one is the best? > * Keep qemu-img the single interface for dirty block mappings. > * Live block migration pre copy == live copy + block access protocol > + live migration > * Live block migration post copy == live migration + block access > protocol/copy on read. > > Comments? I think we should add Jagane Sundar's Livebackup to the watch list here. It looks very interesting as an alternative way to reach some of the same goals. Cheers, Jes