From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Wolf Subject: Re: [PATCH] blktap: qcow2 image format support Date: Thu, 21 Feb 2008 10:28:42 +0100 Message-ID: <47BD444A.9080600@suse.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Keir Fraser schrieb: > Is qcow2 so different from qcow1 that it really needs its own backend > driver? That's a good question. I am not really familiar with the qcow code but I think I saw quite some differences. If you put enough effort on it, you could probably get a single driver for both, but I can't really estimate if it was a sensible thing to do. The main reason why I did it this way is that it is the way qemu has done it, so I just had to take and adapt their code. I'm not sure if it is a good idea to diverge too much from the qemu code base. Kevin