From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59489) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZfVa3-0001xj-Pp for qemu-devel@nongnu.org; Fri, 25 Sep 2015 12:10:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZfVa2-0004eX-VJ for qemu-devel@nongnu.org; Fri, 25 Sep 2015 12:10:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34652) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZfVVR-0002xR-Qf for qemu-devel@nongnu.org; Fri, 25 Sep 2015 12:05:54 -0400 References: <1442889976-8733-1-git-send-email-famz@redhat.com> <1442889976-8733-12-git-send-email-famz@redhat.com> <5601C340.4080801@redhat.com> <5601D763.7010701@redhat.com> <5601E3D0.90301@redhat.com> <87mvwd8k9q.fsf@blackfin.pond.sub.org> <5602CFD9.2040908@redhat.com> <877fnguxzv.fsf@blackfin.pond.sub.org> From: John Snow Message-ID: <560570DF.9040703@redhat.com> Date: Fri, 25 Sep 2015 12:05:51 -0400 MIME-Version: 1.0 In-Reply-To: <877fnguxzv.fsf@blackfin.pond.sub.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v7 11/14] block/backup: support block job transactions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Markus Armbruster Cc: Kevin Wolf , Fam Zheng , Jeff Cody , qemu-devel@nongnu.org, Max Reitz , vsementsov@parallels.com, stefanha@redhat.com On 09/24/2015 02:34 AM, Markus Armbruster wrote: > John Snow writes: > > [...] >> Oh, I see: you're saying ... >> >> each action fetches the property, and if it's true, fail (for 2.5, at >> least) with e.g. a message saying "This property is not [yet?] supported >> for this action" > > Yes. > >> That's simple. I always overcomplicate everything ... > > Simple solutions become simple only once you've thought of them :) > I authored a quick RFC to illustrate what this solution might look like. --js