Xen Boot

• install centOS 5
  • make sure to install the Virtualization packages
  • and include the sub-packages which is under the details button
• modify the grub boot with:

kernel ** irqpoll noapic acpi=off

• Base Linux Repos

• Check your device-mapper table using dmsetup table. If it's in there, clear the mapping with dmsetup remove <name>.

yum repolist enabled
yum --enablerepo=base --disablerepo=citrix
sed -i -e "s/enabled=0/enabled=1/" /etc/yum.repos.d/CentOS-Base.repo
yum update

dmsetup table
dmsetup remove <name>

mdadm --create --verbose /dev/md0 --level=5 --raid-devices=4 /dev/sd[c-f]
mdadm --verbose --detail --scan > /etc/mdadm.conf
pvcreate /dev/md0
xe sr-create content-type=user type=lvm device-config:device=/dev/md0 shared=false name-label="Big Disk"