From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36990) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V2dGn-0003ad-QM for qemu-devel@nongnu.org; Fri, 26 Jul 2013 04:21:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V2dGm-0004kc-Rs for qemu-devel@nongnu.org; Fri, 26 Jul 2013 04:21:01 -0400 Received: from mail-ea0-x22a.google.com ([2a00:1450:4013:c01::22a]:40372) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V2dGm-0004kY-LW for qemu-devel@nongnu.org; Fri, 26 Jul 2013 04:21:00 -0400 Received: by mail-ea0-f170.google.com with SMTP id h10so1448910eaj.1 for ; Fri, 26 Jul 2013 01:21:00 -0700 (PDT) Date: Fri, 26 Jul 2013 10:20:57 +0200 From: Stefan Hajnoczi Message-ID: <20130726082057.GB31438@stefanha-thinkpad.redhat.com> References: <1374069835-14287-1-git-send-email-xiawenc@linux.vnet.ibm.com> <51F08DD9.8010301@linux.vnet.ibm.com> <20130725080630.GD19151@stefanha-thinkpad.redhat.com> <51F1DD9C.9090405@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <51F1DD9C.9090405@linux.vnet.ibm.com> Subject: Re: [Qemu-devel] [PATCH 0/4] export internal snapshot by qemu-nbd List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Wenchao Xia Cc: kwolf@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com, dietmar@proxmox.com On Fri, Jul 26, 2013 at 10:23:24AM +0800, Wenchao Xia wrote: > 于 2013-7-25 16:06, Stefan Hajnoczi 写道: > >On Thu, Jul 25, 2013 at 10:30:49AM +0800, Wenchao Xia wrote: > >> Besides the argument, I think it helps to probe snapshot without > >>qemu-img convert, hope to get comments for the code. > > > >Hi Wenchao, > >Which patch are you referring to? > > > >Stefan > > > This series, which enable qemu-nbd load a snapshot. It is quite > simple, look forward to your opinion, especially the parameter of > qemu-nbd part in patch 2. I understand now. Adding bdrv_snapshot_load_tmp() support to qemu-nbd is useful, it's a shame that the --snapshot/-s option is already taken and likely to cause confusion. The documentation needs to be very clear that --snapshot and --snapshot-load refer to different snapshot concepts. Stefan