From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36271) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XPYlL-0007E5-I7 for qemu-devel@nongnu.org; Thu, 04 Sep 2014 11:15:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XPYlF-0002wB-BF for qemu-devel@nongnu.org; Thu, 04 Sep 2014 11:15:51 -0400 Received: from mx1.redhat.com ([209.132.183.28]:9322) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XPYlF-0002w1-0L for qemu-devel@nongnu.org; Thu, 04 Sep 2014 11:15:45 -0400 Message-ID: <5408821B.4070708@redhat.com> Date: Thu, 04 Sep 2014 08:15:39 -0700 From: Andy Grover MIME-Version: 1.0 References: <20140829172218.GD16755@irqsave.net> <20140902092510.GC29067@stefanha-thinkpad.redhat.com> <54065EE7.4080601@redhat.com> <20140903131159.GM28095@stefanha-thinkpad.redhat.com> <20140904132435.GA27852@irqsave.net> In-Reply-To: <20140904132435.GA27852@irqsave.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] tcmu-runner and QEMU List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?ISO-8859-1?Q?Beno=EEt_Canet?= , Stefan Hajnoczi Cc: kwolf@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org On 09/04/2014 06:24 AM, Beno=EEt Canet wrote: >> There are other commands for snapshots and backup which are issued via >> QMP. >> >> It might even make sense to make the tcmu interface available at >> run-time in QEMU like the run-time NBD server. This allows you to get >> at read-only point-in-time snapshots while the guest is accessing the >> disk. See the nbd-server-start command in qapi/block.json. >> >> Stefan > > Andy: ping > > I hope we didn't scaried you with our monster block backend and it's > associated QMP socket ;) Hi Beno=EEt, No, I've gone off to work on a initial proof-of-concept implementation=20 of a qemu-lio-tcmu.so module, hopefully it'll be ready to look at=20 shortly and then we can shoot arrows at it. :) But in the meantime, do you have a use case or user story for the QMP=20 support that might help me understand better how it might all fit togethe= r? Regards -- Andy