From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:45666) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QrRNQ-0003B0-UK for qemu-devel@nongnu.org; Thu, 11 Aug 2011 05:16:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QrRNM-0005yT-Tm for qemu-devel@nongnu.org; Thu, 11 Aug 2011 05:16:32 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58685) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QrRNM-0005yL-Mg for qemu-devel@nongnu.org; Thu, 11 Aug 2011 05:16:28 -0400 Date: Thu, 11 Aug 2011 10:16:14 +0100 From: "Daniel P. Berrange" Message-ID: <20110811091613.GA28218@redhat.com> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <4E439005.6050605@redhat.com> Subject: Re: [Qemu-devel] [libvirt] [PATCH v4] XBZRLE delta for live migration of large memory apps Reply-To: "Daniel P. Berrange" List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: Blue Swirl , "libvir-list@redhat.com" , "Shribman, Aidan" , qemu-devel Developers 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 Some kind of monitor capabilities seems good to me. Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|