From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1MliTK-0002VX-6B for qemu-devel@nongnu.org; Thu, 10 Sep 2009 08:09:54 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1MliTF-0002Js-Mq for qemu-devel@nongnu.org; Thu, 10 Sep 2009 08:09:53 -0400 Received: from [199.232.76.173] (port=43880 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1MliTF-0002JX-GR for qemu-devel@nongnu.org; Thu, 10 Sep 2009 08:09:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:17790) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1MliTE-000250-KF for qemu-devel@nongnu.org; Thu, 10 Sep 2009 08:09:48 -0400 Date: Thu, 10 Sep 2009 15:08:03 +0300 From: "Michael S. Tsirkin" Subject: Re: [Qemu-devel] The State of the SaveVM format Message-ID: <20090910120802.GA24530@redhat.com> References: <4AA7BEA7.6080906@codemonkey.ws> <87my53lhd1.fsf@pike.pond.sub.org> <4AA85E1F.6000902@codemonkey.ws> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4AA85E1F.6000902@codemonkey.ws> List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: qemu-devel@nongnu.org, Markus Armbruster , Juan Quintela On Wed, Sep 09, 2009 at 09:02:07PM -0500, Anthony Liguori wrote: >> If we complicate vmstate now to shoehorn pre-vmstate >> formats into vmstate, that ancient history will continue to haunt us. >> Complicating a program is far easier than the other direction. >> > > Let's take it one step at a time. There is an awful lot of areas where > we can support older versions without adding complications. Let's > approach the complicated ones one at a time. I'm not sure I understand this talk about "pre-vmstate formats". I thought vmstate patches were, at least for the most part, trying to reimplement existing format with the table-driver design? If that's not so and we are changing the format now, is it too late to consider some standard serialization format rather than rolling our own? -- MST