From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:54911)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <aderumier@oxygem.tv>) id 1XZzpf-0002Fh-IN
	for qemu-devel@nongnu.org; Fri, 03 Oct 2014 06:11:31 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <aderumier@oxygem.tv>) id 1XZzpb-0003bT-9O
	for qemu-devel@nongnu.org; Fri, 03 Oct 2014 06:11:27 -0400
Received: from mailpro.odiso.net ([89.248.209.98]:41454)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <aderumier@oxygem.tv>) id 1XZzpb-0003bG-35
	for qemu-devel@nongnu.org; Fri, 03 Oct 2014 06:11:23 -0400
Date: Fri, 03 Oct 2014 12:11:14 +0200 (CEST)
From: Alexandre DERUMIER <aderumier@odiso.com>
Message-ID: <bdf60cfd-64c6-4310-912e-a5f7d114f823@mailpro>
In-Reply-To: <542D6D57.7060702@liquidweb.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
Subject: Re: [Qemu-devel] is x-data-plane considered "stable" ?
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: Scott Sullivan <ssullivan@liquidweb.com>
Cc: qemu-devel@nongnu.org

Hi,
x-data-plane syntax is deprecated (should be remove in qemu 2.2),

it's using now iothreads

http://comments.gmane.org/gmane.comp.emulators.qemu/279118

 qemu -object iothread,id=3Diothread0 \
       -drive if=3Dnone,id=3Ddrive0,file=3Dtest.qcow2,format=3Dqcow2 \
       -device virtio-blk-pci,iothread=3Diothread0,drive=3Ddrive0


I don't now about the stability, but here what is working and I have tested=
:

-live migration
-resizing
-io throttling
-hotplugging

I think block jobs (mirror,backup,...) don't work yet.


it's working with virtio-blk and virtio-scsi support is coming for qemu 2.2=


Regards,

alexandre

----- Mail original ----- 

De: "Scott Sullivan" <ssullivan@liquidweb.com> 
=C3=80: qemu-devel@nongnu.org 
Envoy=C3=A9: Jeudi 2 Octobre 2014 17:20:55 
Objet: [Qemu-devel] is x-data-plane considered "stable" ? 

Can anyone tell me if in any QEMU release x-data-plane is considered "stabl=
e"? 

If its unclear, I am referring to the feature introduced in QEMU 1.4 for hi=
gh performance disk I/O called virtio-blk data plane. 

http://blog.vmsplice.net/2013/03/new-in-qemu-14-high-performance-virtio.htm=
l 

I've tried searching docs, but can't find any mention if its still consider=
ed experimental or not in the latest QEMU releases.