Have you ever seen a crashed ESX Server with no community support, tons of home-brew utilities with wired command line arguments which throw a bizarre error messages to you that even google know nothing about? I did. ^_^

The idea is about reducing complexity and reusing community-tested solutions, not creating a new layer of complexity with a coded in a rush, badly tested poorly documented closed-source layer.

btw, if I use native lvm I can get a lot of flexibility.

edit: some BS removed.

btw, there is still no x86_64 xen-host for a modern kernels.