From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:37135) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QYwCy-0006ON-6g for qemu-devel@nongnu.org; Tue, 21 Jun 2011 04:21:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QYwCw-0001Kt-Vi for qemu-devel@nongnu.org; Tue, 21 Jun 2011 04:21:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:3161) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QYwCw-0001Ki-Gn for qemu-devel@nongnu.org; Tue, 21 Jun 2011 04:21:14 -0400 Message-ID: <4E00546F.3000103@redhat.com> Date: Tue, 21 Jun 2011 11:21:03 +0300 From: Avi Kivity MIME-Version: 1.0 References: <4DF762A4.2040503@us.ibm.com> <4DFF4DD1.50502@redhat.com> <4DFF502A.9020400@codemonkey.ws> <4DFF84C9.8030909@redhat.com> <4DFF9B4C.1080804@us.ibm.com> In-Reply-To: <4DFF9B4C.1080804@us.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v2] Add support for fd: protocol List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Anthony Liguori Cc: libvir-list@redhat.com, Tyler C Hicks , Corey C Bryant , qemu-devel@nongnu.org On 06/20/2011 10:11 PM, Anthony Liguori wrote: >> It would need careful explanation in the management tool author's guide, >> yes. >> >> The main advantage is generality. It doesn't assume that a file format >> has just one backing file, and doesn't require new syntax wherever a >> file is referred to indirectly. > > > FWIW, with blockdev, we need options to control this all anyway. If > you go back to my QCFG proposal, the parameters would actually be > format specific, so if we had: > > -block > file=fd:4,format=fancypantsformat,part0=hd0-back.part1,part1=hd0-back.part2... Yeah. We either name the formal argument (your proposal) or the actual argument (mine). -- error compiling committee.c: too many arguments to function