From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from [140.186.70.92] (port=55577 helo=eggs.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1OOArg-0002SW-UZ
	for qemu-devel@nongnu.org; Mon, 14 Jun 2010 10:42:18 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69)
	(envelope-from <lcapitulino@redhat.com>) id 1OOArf-0008C1-Pf
	for qemu-devel@nongnu.org; Mon, 14 Jun 2010 10:42:16 -0400
Received: from mx1.redhat.com ([209.132.183.28]:8896)
	by eggs.gnu.org with esmtp (Exim 4.69)
	(envelope-from <lcapitulino@redhat.com>) id 1OOArf-0008Bn-HG
	for qemu-devel@nongnu.org; Mon, 14 Jun 2010 10:42:15 -0400
Date: Mon, 14 Jun 2010 11:42:07 -0300
From: Luiz Capitulino <lcapitulino@redhat.com>
Message-ID: <20100614114207.414642d2@redhat.com>
In-Reply-To: <4C163E48.7010108@linux.vnet.ibm.com>
References: <cover.1276085283.git.quintela@redhat.com>
	<20100609175215.2e2071a0@redhat.com> <m3mxv3p3o8.fsf@trasno.mitica>
	<20100611113022.27490bfe@redhat.com>
	<4C124A72.9000807@codemonkey.ws> <m3zkz0bj06.fsf@trasno.mitica>
	<4C16357B.70308@linux.vnet.ibm.com>
	<20100614112414.1bead4ba@redhat.com>
	<4C163E48.7010108@linux.vnet.ibm.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Subject: [Qemu-devel] Re: [PATCH v3 0/5] Add QMP migration events
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/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: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Anthony Liguori <aliguori@linux.vnet.ibm.com>
Cc: qemu-devel@nongnu.org, Juan Quintela <quintela@redhat.com>

On Mon, 14 Jun 2010 09:35:52 -0500
Anthony Liguori <aliguori@linux.vnet.ibm.com> wrote:

> On 06/14/2010 09:24 AM, Luiz Capitulino wrote:
> > On Mon, 14 Jun 2010 08:58:19 -0500
> > Anthony Liguori<aliguori@linux.vnet.ibm.com>  wrote:
> >
> >    
> >> For 0.13, we need to focus on introducing the least disruptive change
> >> that addresses the fundamental requirement--allow clients to avoid a
> >> polling loop for determining when migration ends.  Having a single event
> >> with no payload is an extremely simple change.
> >>      
> >   Agreed.
> >
> >   Actually, I'm slightly against introducing the done event too. While the
> > polling is undesired, I don't think that having an event only for a release
> > is worth it.
> >    
> 
> I don't think we can realistically remove it.  In my mind, what 
> deprecate means with respect to QMP is that we never add additional 
> features to the deprecated commands.

 Oh, by 'only for a release' I meant 'useful only for a release', ie. I
didn't mean we would remove it but that it will only be useful for 0.13.

> Right now, 'migrate', 'info migrate', and MIGRATE_DONE do not provide 
> very rich error reporting.  They really just provide a boolean 
> failed/succeeded.
> 
> For 0.14, we'll have to introduce a 'migrate2' command and deprecate the 
> old 'migrate' command.  'migrate2' will provide rich error reporting and 
> all new features will be added to 'migrate2'.
> 
> BTW, I lack any kind of naming creativity so 'migrate2' is not 
> necessarily what it ought to be called.

 We can have a contest.