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[Xen-users] xen3 domU on xen4 dom0

To: Xen List <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] xen3 domU on xen4 dom0
From: Wolf Grossi <wg@xxxxxxxxxxxxxx>
Date: Tue, 08 Feb 2011 15:17:39 +0100
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Trying to to run a xen3 domU on a xen4 dem0 I run into problems.

The xen server 'XEN1'(dom0) is openSUSE-11.3 (kernel 2.6.34) and xen-4.0.1.

With qemu I created an image 'M08.raw' from the SUSE-9.3
(kernel 2.6.11) and XEN-3.0 installation CD's.
The XEN modules were included in the installation.
In M08.raw/boot I configured grub/menu.lst:
title XEN
kernel (hd0,1)/boot/vmlinuz-xen root=/dev/hda2 vga=0x314 selinux=0 splash=silent resume=/dev/hda1 showopts
    module (hd0,1)/boot/initrd-xen

dumU configuration in /etc/xen/vm/M08:

bootloader = "/usr/bin/pygrub"
memory = 1024
name = "M08"
disk = [ 'tap:aio:/var/lib/xen/images/M08/M08.raw,hda,w' ]
vif=[ 'mac=00:16:3e:00:a0:08,bridge=br0', ]

xm create -c M08
I get the following error:

XEN1:/etc/xen/vm # Error: (2, 'Invalid kernel', 'elf_xen_note_check: ERROR: Xen will only load images built for Xen v3.0\n')

I do not uderstand the above error: the kernel to be loaded *is* a xen-3.0 kernel and should be taken from domU:/boot.

Now I have the following questions:
1) Can I run xen-3 domU's on a xen-4 dom0?
2) If yes (hope so :-), what's wrong with the above install/config,
   or what have I missed?

Thanks for reading and hints.

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