Just a quick reminder. If you have your root disk on a Linux box encapsulated then don’t forget to recreate initrd image after the kernel has been updated.
/usr/lib/vxvm/bin/vxinitrd /boot/VxVM_initrd.img 'uname -r'
Otherwise you’ll end up being welcomed by the following message once you reboot.
Kernel panic - not syncing: Attempted to kill init!
Have a nice day!