On Fri, Mar 04, 2011 at 10:31:18AM +0200, Jussi Hirvi wrote:
> Is there any (easy?) way to migrate running standalone CentOS 4 or 5
> systems to xen virtual stacks?
>
> Rebuilding those systems from scratch on the xen machine would take
> plenty of work.
>
If you're talking about Xen PV domUs, then the process
is pretty much like this:
- ssh into the standalone system.
- make sure /etc/modprobe.conf includes xenblk driver (so that it'll be included in the generated initrd when you install kernel-xen).
- fix /etc/fstab to have xvd* (xen virtual disk) devices instead of sd*.
- install kernel-xen rpm.
- verify kernel-xen is the default in /boot/grub/grub.conf.
- verify root= parameter is correct in /boot/grub/grub.conf for kernel-xen.
- copy/transfer all the files from the standalone system to virtual disk/image.
- create a configuration file for the new domU, make it use pygrub bootloader, and make it use xvd* disks/devices.
- done.
-- Pasi
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