From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:55886) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S4U0Y-0000XH-W1 for qemu-devel@nongnu.org; Mon, 05 Mar 2012 04:15:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1S4U0B-0003sc-Sz for qemu-devel@nongnu.org; Mon, 05 Mar 2012 04:15:06 -0500 Received: from mx1.redhat.com ([209.132.183.28]:7815) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S4U0B-0003sV-KA for qemu-devel@nongnu.org; Mon, 05 Mar 2012 04:14:43 -0500 Message-ID: <4F5483FB.3030904@redhat.com> Date: Mon, 05 Mar 2012 10:14:35 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: <4F4E9E31.50903@storagecraft.com> <4F4F8FCD.7010106@redhat.com> <4F4FD1C9.8050006@storagecraft.com> <4F4FD7C7.7030001@mail.berlios.de> <4F4FD9A6.9060308@mail.berlios.de> <4F4FE4AA.20902@codemonkey.ws> <4F4FE6C6.1070302@storagecraft.com>, <4F506E92.9080902@redhat.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] Add support for new image type List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Kai Meyer Cc: Stefan Weil , "qemu-devel@nongnu.org" , Anthony Liguori , Nate Bushman Il 02/03/2012 19:38, Kai Meyer ha scritto: > Well, yes. I was assuming that there was potential for us to be able > to distribute qemu modifications that would not require us opening up > our library. The more we look at it, and some past precedence we've > experienced, it looks like it's not going to happen. > > I think I agree that iSCSI is really our only option (legally). Too > bad. The code was so simple to integrate directly into qemu. I have > to give you guys kudos again for already having such a simple > integration point. Adding a small, open source version of the image access code would be another possibility; you probably have a public spec of the format, and including support for your format in a QEMU block driver doesn't change much. Who knows, it may even bring cheap advertising. :) QEMU has several entry points for the block driver, and the once with lower performance are extremely easy to implement (see block/bochs.c). In theory it could even be read-only, though we would have problems testing it and this may mean bitrot. Paolo