Xen Vm paravirtualise

Ficher de configuration de base d'une VM

import os, re
arch = os.uname()[4]
if re.search('64', arch):
    arch_libdir = 'lib64'
else:
    arch_libdir = 'lib'
kernel = "/boot/vmlinuz_xend "
ramdisk = "/boot/initrd-domu "
builder='linux'
memory = 2048
shadow_memory = 8
name = "www1"
vcpus=2
pae=1
acpi=1
apic=1
cpus = "0-1" # run on cpus 0,2,3,5
vif = [ 'bridge=xenbr0', 'bridge=xenbr1' ]
disk = [ 'file:/data/image/www1.img,hda1,w','file:/data/image/www1.swp,hda2,w' ]
on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
boot="c"
vnc=0
stdvga=0
serial='pty'
keymap='fr'
root="/dev/hda1"

A noter que le noyau est celui du dom0 mais que l’initrd est specifique au domu (c’est ce qui permet d’eviter le /dev/root not found).