From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43732) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a8hKC-0006Tr-3r for qemu-devel@nongnu.org; Mon, 14 Dec 2015 23:34:56 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1a8hK8-00045Q-Uf for qemu-devel@nongnu.org; Mon, 14 Dec 2015 23:34:56 -0500 Received: from mx1.redhat.com ([209.132.183.28]:50914) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a8hK8-00045J-P8 for qemu-devel@nongnu.org; Mon, 14 Dec 2015 23:34:52 -0500 Date: Tue, 15 Dec 2015 12:34:47 +0800 From: Fam Zheng Message-ID: <20151215043447.GC19034@ad.usersys.redhat.com> References: <1450115035-15473-1-git-send-email-vsementsov@virtuozzo.com> <566F20EE.9070409@redhat.com> <566F2A7B.10206@redhat.com> <566F3833.3010301@redhat.com> <566F4210.1020200@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <566F4210.1020200@redhat.com> Subject: Re: [Qemu-devel] [PATCH v4 RFC] spec: add qcow2-dirty-bitmaps specification List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: John Snow Cc: kwolf@redhat.com, Vladimir Sementsov-Ogievskiy , qemu-devel@nongnu.org, Max Reitz , stefanha@redhat.com, den@openvz.org On Mon, 12/14 17:26, John Snow wrote: > > If the auto bit is on, it's a must. > > Let's try again: > > "1: auto > This bitmap is of the Dirty Tracking Type and must accurately > reflect all writes to the virtual disk image by any application > that would write to it. This bitmap should not lose the auto bit > except by user intervention." > > Or something like that? The idea is that it will indeed be "autoloaded" > and made active, but some bitmaps might be stored in various > frozen/unactive states where this is not desirable. Yes, I like this idea. It also answers my "enabled" flag question in reply to Max's comments. Fam