From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([208.118.235.92]:51288)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <owasserm@redhat.com>) id 1TYJYI-0002Ha-5X
	for qemu-devel@nongnu.org; Tue, 13 Nov 2012 11:41:33 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <owasserm@redhat.com>) id 1TYJYF-0005ls-3Q
	for qemu-devel@nongnu.org; Tue, 13 Nov 2012 11:41:30 -0500
Received: from mx1.redhat.com ([209.132.183.28]:21541)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <owasserm@redhat.com>) id 1TYJYE-0005lQ-S5
	for qemu-devel@nongnu.org; Tue, 13 Nov 2012 11:41:27 -0500
Message-ID: <50A27816.8020903@redhat.com>
Date: Tue, 13 Nov 2012 18:40:54 +0200
From: Orit Wasserman <owasserm@redhat.com>
MIME-Version: 1.0
References: <87390dcw7l.fsf@trasno.org>
In-Reply-To: <87390dcw7l.fsf@trasno.org>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] Migration ToDo list
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: quintela@redhat.com
Cc: Michael Roth <mdroth@linux.vnet.ibm.com>, benoit.hudzia@sap.com, chegu_vinod@hp.com, qemu-devel qemu-devel <qemu-devel@nongnu.org>, Isaku Yamahata <yamahata@valinux.co.jp>

On 11/13/2012 06:18 PM, 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?
> 
> 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)
Use RDS (Reliable Datagram Sockets), which allows us to use the same API
when using tcp or RDMA (me)
> * This is required for postcopy
> * This can be used for precopy
> 
> General
> * Change protocol to:
>   a) being always 16byte aligned (paolo said that is faster)
>   b) do scatter/gather of the pages?
> 
> Fault Tolerance
> * That is built on top of migration code, but I have nothing to add.
> 
> Any more ideas?
copyless networking - maybe use virtio zero copy mechanism? (me)
EPT/NPT dirty bits (will make the sync more expensive but will improve guest performance) 

Regards,
Orit
> 
> Later, Juan.
>