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[Xen-users] problem booting xen

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] problem booting xen
From: Nicolas Chauvat <nicolas.chauvat@xxxxxxxxxx>
Date: Sat, 9 Sep 2006 19:05:58 +0200
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Hi list,

I am trying to install Xen on Debian, but it fails at boot time.

Here is my setup:

$ dpkg -l | grep xen
ii  libc6-xen                       2.3.6.ds1-4        GNU C Library: Shared 
libraries (Xen version
ii  linux-image-2.6.17-2-xen-686    2.6.17-8           Linux 2.6.17 image on 
ii  linux-modules-2.6.17-2-xen-686  2.6.17-8           Linux 2.6.17 modules on 
ii  xen-docs-3.0                    3.0.2+hg9697-2.1   documentation for XEN, a 
Virtual Machine Mon
ii  xen-hypervisor-3.0-i386         3.0.2+hg9697-2.1   The Xen Hypervisor for 
ii  xen-tools                       2.5-2              Tools to manage debian 
XEN virtual servers
ii  xen-utils-3.0                   3.0.2+hg9697-2.1   XEN administrative tools

The grub entry looks like this:

title           Xen 3.0-i386 / Debian GNU/Linux, kernel 2.6.17-2-xen-686
root            (hd0,1)
kernel          /boot/xen-3.0-i386.gz
module          /boot/vmlinuz-2.6.17-2-xen-686 root=/dev/hda2 ro console=tty0
module          /boot/initrd.img-2.6.17-2-xen-686

The content of the /boot dir is as follows:

$ ls /boot/
System.map-2.6.17-2-686      config-2.6.17-2-xen-686
initrd.img-2.6.17-2-686      vmlinuz-2.6.17-2-xen-686
System.map-2.6.17-2-xen-686  debian.bmp
initrd.img-2.6.17-2-xen-686  xen-3.0-i386.gz
config-2.6.17-2-686          grub

When I restart the computer and choose Xen in grub, I get lines
prefixed with (XEN) on the screen. The last lines I can read are

(XEN) dom0 has max 1 VCPU
(XEN) initrd ...
(XEN) scrubing free RAM done
(XEN) trace buffer disabled

then the screen turns black and the computer reboots.

I do not know where to look for a log of events (I copied the above by
hand), nor what to do to get a better idea of what the problem is.

Any hint?

Nicolas Chauvat

logilab.fr - services en informatique avancée et gestion de connaissances  

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