From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=46778 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Ot5pF-00061C-7T for qemu-devel@nongnu.org; Tue, 07 Sep 2010 17:35:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Ot5pE-0004Kt-4G for qemu-devel@nongnu.org; Tue, 07 Sep 2010 17:35:33 -0400 Received: from verein.lst.de ([213.95.11.210]:58340) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Ot5pD-0004Kk-RC for qemu-devel@nongnu.org; Tue, 07 Sep 2010 17:35:32 -0400 Date: Tue, 7 Sep 2010 23:35:24 +0200 From: Christoph Hellwig Subject: Re: [Qemu-devel] [RFC] qed: Add QEMU Enhanced Disk format Message-ID: <20100907213524.GA17980@lst.de> References: <1283767478-16740-1-git-send-email-stefanha@linux.vnet.ibm.com> <4C84E738.3020802@codemonkey.ws> <4C865187.6090508@redhat.com> <4C86645F.8060005@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4C86645F.8060005@codemonkey.ws> List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: Kevin Wolf , qemu-devel@nongnu.org, Avi Kivity , Stefan Hajnoczi On Tue, Sep 07, 2010 at 11:12:15AM -0500, Anthony Liguori wrote: > IOW, what are valid values for backing_fmt? "raw" and "qed" are obvious > but what does it mean from a formal specification perspective to have > "vmdk"? Is that VMDK v3 or v4, what if there's a v5? It might be better to just use a uint16_t field for the backing format, where each valid format gets a bit position assigned. For now just raw, qed and qcow2 would be enough.