From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41351) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vc7Gb-0005le-Pl for qemu-devel@nongnu.org; Fri, 01 Nov 2013 01:27:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Vc7GW-0006rb-Kw for qemu-devel@nongnu.org; Fri, 01 Nov 2013 01:27:29 -0400 Received: from mail.univention.de ([82.198.197.8]:2843) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vc7GW-0006qr-E7 for qemu-devel@nongnu.org; Fri, 01 Nov 2013 01:27:24 -0400 From: Philipp Hahn Date: Fri, 1 Nov 2013 06:04:19 +0100 References: In-Reply-To: MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Message-Id: <201311010604.19768.hahn@univention.de> Subject: [Qemu-devel] VHD suport in QEMU? List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, xen-devel@lists.xen.org Cc: kwolf@redhat.com, Jeff Cody , stefanha@redhat.com Hello, sorry for high-jacking this thread, but I have a questing regarding VHD (without the X): Xen-4.3 switched to upstream QEMUs support for VHD. The dropped their own VHD implementation in blktap2, which supported backing chains, which QEMU currently doesn't. The Xen implementation (xen/tools/blktap2/vhd/lib/ is BSD 3 clause) also supports some kind of journal. 1. Does someone know if the journal support for VHD is somehow related to VHDX? 2. Has somewone put some work into supporting backing chains? I started to have a look myself some time ago, but had to do other work since then. Sincerely Philipp -- Philipp Hahn Open Source Software Engineer hahn@univention.de Univention GmbH be open. fon: +49 421 22 232- 0 Mary-Somerville-Str.1 D-28359 Bremen fax: +49 421 22 232-99 http://www.univention.de/ Director:Peter H. Ganten HRB 20755 Amtsgericht Bremen UID:DE 220 051 310