Making use of pygrub in lenny domU and hardy dom0

If you want to make use of a Debian Lenny as a domU in a Ubuntu Hardy dom0 you can either install the dom0 kernel and modules in the domU or you can use pygrub.

To make use of pygrub there are a few simple steps you need to perform:

• Adjusting the domU config file, an example:

 #
#  Kernel + memory size
#
#kernel = '/boot/vmlinuz-2.6.24-21-xen' <-- must be commented
#ramdisk = '/boot/initrd.img-2.6.24-21-xen' <-- must be commented
bootloader = '/usr/bin/pygrub' <-- must be for use of pygrub
memory = '256'

#
#  Disk device(s).
#
root = '/dev/sda2 ro'
disk = [
'phy:/dev/server/jupiter-disk,sda2,w',  <-- must be the first line is the root partition
'phy:/dev/server/jupiter-swap,sda1,w',
'phy:/dev/server/www,sda3,w',
]

#
#  Hostname
#
name = 'jupiter'

#
#  Networking
#
vif = [ 'ip=192.168.1.6,mac=00:16:3E:79:6B:D6' ]

#
#  Behaviour
#
on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'

• Installing needed packages in domU
  • If the domU is running


apt-get install linux-image-2.6-xen-686
apt-get install grub
grub-install /dev/XXX <-- the hdd you defined as root partition (not nessesarry)


• • If it’s not running

mkdir /mnt/temp
mount /dev/XXX /mnt/temp
mount -t proc none /mnt/temp/proc
chroot /mnt/temp
apt-get install linux-image-2.6-xen-686
apt-get install grub
grub-install /dev/XXX <– the hdd you defined as root partition (not nessesarry)

• Finaly putting this in the config: /boot/grub/grub.conf

title Debian 2.6.26
kernel /boot/vmlinuz-2.6.26-1-xen-686 ro root=/dev/sda2 console=hvc0 xencons=tty
initrd /boot/initrd.img-2.6.26-1-xen-686