From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1MoHbX-00036z-TC for qemu-devel@nongnu.org; Thu, 17 Sep 2009 10:04:59 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1MoHbT-000321-To for qemu-devel@nongnu.org; Thu, 17 Sep 2009 10:04:59 -0400 Received: from [199.232.76.173] (port=39284 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MoHbT-00031t-Or for qemu-devel@nongnu.org; Thu, 17 Sep 2009 10:04:55 -0400 Received: from david.siemens.de ([192.35.17.14]:23746) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1MoHbT-0002Vl-8s for qemu-devel@nongnu.org; Thu, 17 Sep 2009 10:04:55 -0400 Message-ID: <4AB24198.5070707@siemens.com> Date: Thu, 17 Sep 2009 16:03:04 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <1253194297802-git-send-email-lirans@il.ibm.com> In-Reply-To: <1253194297802-git-send-email-lirans@il.ibm.com> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Re: [PATCH 0/3 v3] Live migration without shared storage List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: lirans@il.ibm.com Cc: qemu-devel@nongnu.org lirans@il.ibm.com wrote: > This series adds support for live migration without shared storage, means > copy the storage while migrating. It was tested with KVM. Supports 2 ways > to replicate the storage during migration: > 1. Complete copy of storage to destination > 2. Assuming the storage is cow based, copy only the allocated > data, time of the migration will be linear with the amount of allocated > data (user responsibility to verify that the same backend file reside > on src and destination). For my understanding: Does it require the use of qcow[2] or does it also work with raw images? > > Live migration will work as follows: > (qemu) migrate -d tcp:0:4444 # for ordinary live migration > (qemu) migrate -d -b tcp:0:4444 # for live migration with complete storage copy > (qemu) migrate -d -i tcp:0:4444 # for live migration with incremental storage copy, storage is cow based. > > The patches are against qemu.git tree ...but without signed-off. Are they RFC for now or do you propose them for merge? Jan PS: I think there are some style issues remaining like tabs or long lines. -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux