From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:59314) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ue9Tm-0006G0-4E for qemu-devel@nongnu.org; Sun, 19 May 2013 15:41:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ue9Th-0008ED-Bx for qemu-devel@nongnu.org; Sun, 19 May 2013 15:41:14 -0400 Received: from mx1.redhat.com ([209.132.183.28]:33097) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ue9Th-0008Dr-4X for qemu-devel@nongnu.org; Sun, 19 May 2013 15:41:09 -0400 Date: Sun, 19 May 2013 20:41:03 +0100 From: "Richard W.M. Jones" Message-ID: <20130519194102.GG4515@redhat.com> References: <1368693379-8434-1-git-send-email-stefanha@redhat.com> <20130519164755.GA18311@redhat.com> <51992866.50902@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <51992866.50902@redhat.com> Subject: Re: [Qemu-devel] [PATCH v4 0/8] block: drive-backup live backup command List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini Cc: Kevin Wolf , Fam Zheng , qemu-devel@nongnu.org, dietmar@proxmox.com, imain@redhat.com, Stefan Hajnoczi , xiawenc@linux.vnet.ibm.com On Sun, May 19, 2013 at 09:30:46PM +0200, Paolo Bonzini wrote: > Il 19/05/2013 18:47, Richard W.M. Jones ha scritto: > >> > > >> > More advanced users may wish to make the target an NBD URL. The NBD server > >> > listening on the other side can process the backup writes any way it wishes. I > >> > previously posted an RFC series with a backup server that streamed Dietmar's > >> > VMA backup archive format. > > I'm guessing the answer is no, but thought I would ask: Is there > > any way to use this to do point-in-time inspection of guests? > > Almost, and even for an atomic copy of multiple disks. All that is left > is to create the copy with the disk as a backing file, and switch the > backing file at the end of the copy. It is a very simple change on top > of these patches. Cool news. I look forward to this :-) Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top