Another downside:
Opensolaris para VM can't be created on a Linux Xen (Oracle VM) hypervisor, because it expects that the guest is also Linux.
OracleVM# virt-install --paravirt --name sol --ram 512 --file /OVS/running_pool/sol/sol.dsk --nographics --location nfs:10.128.16.205:/media/SOL_11_X86
Starting install...
ERROR: Invalid NFS location given: [Errno 2] No such file or directory: '/var/lib/xen/xennfs.E7Dg5V/images/xen/vmlinuz'
