From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:46228) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QrRRa-0003xD-HB for qemu-devel@nongnu.org; Thu, 11 Aug 2011 05:20:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QrRRW-0006h8-PX for qemu-devel@nongnu.org; Thu, 11 Aug 2011 05:20:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:29626) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QrRRW-0006gy-I6 for qemu-devel@nongnu.org; Thu, 11 Aug 2011 05:20:46 -0400 Message-ID: <4E439EE1.8040103@redhat.com> Date: Thu, 11 Aug 2011 12:20:33 +0300 From: Avi Kivity MIME-Version: 1.0 References: <4E40147E.2080403@redhat.com> <4E401504.7080309@codemonkey.ws> <4E429FE6.4060408@redhat.com> <4E42AABB.3020306@codemonkey.ws> <4E42ACF9.3040101@redhat.com> <4E42B07C.2090805@codemonkey.ws> <4E42B48D.9020609@redhat.com> <4E42DBAD.5030900@codemonkey.ws> <4E439005.6050605@redhat.com> <20110811091613.GA28218@redhat.com> In-Reply-To: <20110811091613.GA28218@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [libvirt] [PATCH v4] XBZRLE delta for live migration of large memory apps List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Daniel P. Berrange" Cc: Blue Swirl , "libvir-list@redhat.com" , "Shribman, Aidan" , qemu-devel Developers On 08/11/2011 12:16 PM, Daniel P. Berrange wrote: > On Thu, Aug 11, 2011 at 11:17:09AM +0300, Avi Kivity wrote: > > On 08/10/2011 10:27 PM, Anthony Liguori wrote: > > >>This may be acceptable, wait until the entire migration cluster is > > >>xzbrle capable before enabling it. If not, add a monitor command. > > > > > > > > >1) xzbrle needs to be disabled by default. That way management > > >tools don't unknowingly enable it by not passing -no-xzbrle. > > > > We could hook it to -M, though it's a bit gross. > > That would needlessly prevent its use for any existing installed > guests with a older machine type, which are running in a new QEMU You could still enable it explicitly; I'm just trying to get it to be enabled by default. > Some kind of monitor capabilities seems good to me. > Live migration is probably mostly done in managed environments, so I think you're right. -- error compiling committee.c: too many arguments to function