From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KxfGw-0002aW-4C for qemu-devel@nongnu.org; Wed, 05 Nov 2008 05:05:58 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KxfGu-0002Zs-DJ for qemu-devel@nongnu.org; Wed, 05 Nov 2008 05:05:57 -0500 Received: from [199.232.76.173] (port=59045 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KxfGu-0002Zp-7b for qemu-devel@nongnu.org; Wed, 05 Nov 2008 05:05:56 -0500 Received: from mx1.redhat.com ([66.187.233.31]:47994) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1KxfGu-0001OM-1D for qemu-devel@nongnu.org; Wed, 05 Nov 2008 05:05:56 -0500 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id mA5A5t21013452 for ; Wed, 5 Nov 2008 05:05:55 -0500 Received: from file.fab.redhat.com (file.fab.redhat.com [10.33.63.6]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id mA5A5shV014423 for ; Wed, 5 Nov 2008 05:05:54 -0500 Received: from file.fab.redhat.com (localhost.localdomain [127.0.0.1]) by file.fab.redhat.com (8.13.1/8.13.1) with ESMTP id mA5A5sDM018287 for ; Wed, 5 Nov 2008 10:05:54 GMT Received: (from berrange@localhost) by file.fab.redhat.com (8.13.1/8.13.1/Submit) id mA5A5sen018213 for qemu-devel@nongnu.org; Wed, 5 Nov 2008 10:05:54 GMT Date: Wed, 5 Nov 2008 10:05:54 +0000 From: "Daniel P. Berrange" Subject: Re: [Qemu-devel] Live migration - exec: support to be reintroduced? Message-ID: <20081105100546.GA25523@redhat.com> References: <49113157.3090101@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <49113157.3090101@codemonkey.ws> Reply-To: "Daniel P. Berrange" , qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org On Tue, Nov 04, 2008 at 11:38:31PM -0600, Anthony Liguori wrote: > Charles Duffy wrote: > >Howdy. > > > >KVM's live migration support used to support an exec: protoco, > >allowing either a completely arbitrary transport or a mechanism for > >storing system state to a separate file for later resurrection, being > >used in the latter by libvirt's qemu driver. I notice that this > >support no longer exists in the current codebase. > >Would a patch reimplementing this support be welcome? > > Absolutely. I wasn't aware that libvirt used the exec: protocol. I'm > somewhat surprised by that. What did it use it for? We used it to implement save-to-file, exec'ing 'dd'. I'd rather prefer that we had a more explicit 'migrate to a file' capability rather than the hack of execing dd. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|