From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JgWXN-0004VA-Oi for qemu-devel@nongnu.org; Mon, 31 Mar 2008 22:47:49 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JgWXM-0004Ud-Rp for qemu-devel@nongnu.org; Mon, 31 Mar 2008 22:47:48 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JgWXM-0004UZ-IV for qemu-devel@nongnu.org; Mon, 31 Mar 2008 22:47:48 -0400 Received: from quinthar.com ([72.52.120.178]) by monty-python.gnu.org with smtp (Exim 4.60) (envelope-from ) id 1JgWXM-0006oW-1n for qemu-devel@nongnu.org; Mon, 31 Mar 2008 22:47:48 -0400 Received: from 76.231.185.49 ([76.231.185.49]) by quinthar.com for ; Mon, 31 Mar 2008 19:47:43 -0700 Message-ID: <47F1A24E.7050809@quinthar.com> Date: Mon, 31 Mar 2008 19:47:42 -0700 From: David Barrett MIME-Version: 1.0 Subject: Re: [Qemu-devel] Are VM snapshots on Ubuntu host compatible with Fedora host? References: <47E1B6FB.7080306@quinthar.com> <47E342FF.5010703@quinthar.com> <47F19456.20807@quinthar.com> <47F19CD0.3050709@codemonkey.ws> In-Reply-To: <47F19CD0.3050709@codemonkey.ws> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Anthony Liguori wrote: > David Barrett wrote: >> Following up on this, I created a brand-new WinXP image from scratch >> (on my Ubuntu box), uploaded to my headless Fedora box, and it still >> has the exact same crash: >> >> qemu: warning: error while loading state for instance 0x0 of device 'ram' >> qemu: fatal: triple fault >> >> So is it safe to say that QEMU VM snapshots are not transferable >> between hosts? > > KVM images are not compatible with QEMU. If one of your servers is > running KVM, that's likely your problem. Ahh, very interesting. Just to make sure I understand correctly, this means VM snapshots made when QEMU has KQEMU enabled will not transfer between machines, right? Or do you mean that the *whole image* (the entire qcow2) cannot be transferred? I ask because now that I've got VNC working on my headless server, I note that my XP guest -- despite being started from a binary identical image that works fine on my Ubuntu host -- immediately and infinitely BSoDs on startup. I assumed (perhaps incorrectly) that the same QEMU XP image would work across multiple hosts, even those with different processors and motherboards. Am I misunderstanding this? (Just for grins I even converted the qcow2 image to raw, to filter out any special qcow2 issues. No effect.) -david