From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:38422) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TYJez-0006IU-Ii for qemu-devel@nongnu.org; Tue, 13 Nov 2012 11:48:28 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TYJew-0007oC-Gl for qemu-devel@nongnu.org; Tue, 13 Nov 2012 11:48:25 -0500 Received: from g1t0027.austin.hp.com ([15.216.28.34]:24476) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TYJew-0007n9-BS for qemu-devel@nongnu.org; Tue, 13 Nov 2012 11:48:22 -0500 Message-ID: <50A279CA.5040708@hp.com> Date: Tue, 13 Nov 2012 08:48:10 -0800 From: Chegu Vinod MIME-Version: 1.0 References: <87390dcw7l.fsf@trasno.org> In-Reply-To: <87390dcw7l.fsf@trasno.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] Migration ToDo list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: quintela@redhat.com Cc: Michael Roth , Orit Wasserman , benoit.hudzia@sap.com, qemu-devel qemu-devel , Isaku Yamahata On 11/13/2012 8:18 AM, Juan Quintela wrote: > Hi > > If you have anything else to put, please add. > > Migration Thread > * Plan is integrate it as one of first thing in December (me) > * Remove copies with buffered file (me) > > Bitmap Optimization > * Finish moving to individual bitmaps for migration/vga/code > * Make sure we don't copy things around > * Shared memory bitmap with kvm? > * Move to 2MB pages bitmap and then fine grain? If its not already implied in the above ... the long freezes observed at the start of the migration needs to be addressed (its most likely related to BQL ?). > > QIDL > * Review the patches (me) > > PostCopy > * Review patches? > * See what we can already integrate? > I remember for last year that we could integrate the 1st third or so > > RDMA > * Send RDMA/tcp/.... library they already have (Benoit) > * This is required for postcopy > * This can be used for precopy Not sure if what Benoit has can be directly used for pre-copy also. As Paolo said... we need to look at RDS API's for pre-copy. ('have just started looking at the same). Would like to know if SDP can be used... > General > * Change protocol to: > a) being always 16byte aligned (paolo said that is faster) > b) do scatter/gather of the pages? Control of where the migration thread(s) run... -- BTW, has anyone tried doing multiple guest migration from a host ? Are there limitations (enforced via higher level management tools) as to how many guests can be migrated at once (in an attempt to quickly evacuate a flaky host) ? Vinod > Fault Tolerance > * That is built on top of migration code, but I have nothing to add. > > Any more ideas? > > Later, Juan. > . >