From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nils Cant <nils.cant@kangaroot.net>
Subject: Re: Is it possible to live migrate guest OS'es between different
 versions of kvm/qemu-kvm?
Date: Mon, 30 Aug 2010 14:04:51 +0200
Message-ID: <4C7B9E63.6060804@kangaroot.net>
References: <4C767527.2060208@kangaroot.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
To: kvm@vger.kernel.org
Return-path: <kvm-owner@vger.kernel.org>
Received: from mx-be.kangaroot.net ([62.213.203.171]:38349 "EHLO
	mx-be.kangaroot.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1754045Ab0H3MGI (ORCPT <rfc822;kvm@vger.kernel.org>);
	Mon, 30 Aug 2010 08:06:08 -0400
Received: from 62-213-203-169.colo.kangaroot.net ([62.213.203.169] helo=zimbra.kangaroot.net)
	by mx-be.kangaroot.net with esmtp (Exim 4.69)
	(envelope-from <nils.cant@kangaroot.net>)
	id 1Oq37k-0006XE-Kk
	for kvm@vger.kernel.org; Mon, 30 Aug 2010 14:06:04 +0200
Received: from localhost (localhost.localdomain [127.0.0.1])
	by zimbra.kangaroot.net (Postfix) with ESMTP id 89C17F4CB8
	for <kvm@vger.kernel.org>; Mon, 30 Aug 2010 14:06:01 +0200 (CEST)
Received: from zimbra.kangaroot.net ([127.0.0.1])
	by localhost (zimbra.kangaroot.net [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id yL5HntrEywfE for <kvm@vger.kernel.org>;
	Mon, 30 Aug 2010 14:05:59 +0200 (CEST)
Received: from [10.0.14.1] (office2.antwerp.kangaroot.net [82.146.101.162])
	by zimbra.kangaroot.net (Postfix) with ESMTPSA id 322C3F46B8
	for <kvm@vger.kernel.org>; Mon, 30 Aug 2010 14:05:59 +0200 (CEST)
In-Reply-To: <4C767527.2060208@kangaroot.net>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

Hey guys,

next try is without libvirt, but still no joy.

After issuing 'migrate -d <url>' on my sending host (qemu-kvm 0.11.0), I 
get the following output on the receiving host (qemu-kvm 0.12.4):

(qemu) Unknown savevm section or instance 'slirp' 0
load of migration failed

... leaving my vm broken.

Am I doing something wrong, or is the format of the savevm file just 
different and should I abandon all hope of ever doing a live migration 
to a newer version of qemu-kvm?

Thanks in advance,


Nils

---

Here are my upstart options on the 'sender':

/usr/bin/kvm -S \
         -M pc-0.11 \
         -enable-kvm \
         -m 512 \
         -smp 2,sockets=2,cores=1,threads=1 \
         -name testserver \
         -uuid 890a0156-0542-32d8-66d7-b36a711084cc \
         -monitor 
unix:/var/lib/libvirt/qemu/testserver.monitor,server,nowait \
         -boot c \
         -drive 
file=/dev/disk/by-path/ip-192.168.3.100:3260-iscsi-iqn.2003-10.com.lefthandnetworks:lefthand0:64:testserver-lun-0,if=virtio,boot=on 
\
         -drive media=cdrom \
         -usb \
         -vnc 0.0.0.0:10 \
         -k en-us \
         -vga cirrus &

And the 'receiver':

/usr/bin/kvm -S \
         -M pc-0.11 \
         -enable-kvm \
         -m 512 \
         -smp 2,sockets=2,cores=1,threads=1 \
         -name testserver \
         -uuid 890a0156-0542-32d8-66d7-b36a711084cc \
         -nodefaults \
         -chardev 
socket,id=monitor,path=/var/lib/libvirt/qemu/testserver.monitor,server,nowait 
\
         -mon chardev=monitor,mode=readline \
         -boot c \
         -drive 
file=/dev/disk/by-path/ip-192.168.3.100:3260-iscsi-iqn.2003-10.com.lefthandnetworks:lefthand0:64:testserver-lun-0,if=none,id=drive-virtio-disk0,boot=on 
\
         -drive if=none,media=cdrom,id=drive-ide0-1-0 \
         -device 
ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 \
         -device 
virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 \
         -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
         -chardev pty,id=serial0 \
         -device isa-serial,chardev=serial0 \
         -usb \
         -vnc 0.0.0.0:0 \
         -k en-us \
         -vga cirrus \
         -incoming tcp:0:4444 &