SolusVM KVM offline migration with shared storage

I'm building a new virtualization cloud with SolusVM, KVM, and a bit of Xen (to make use of older hardware). Each machine has its own hard disk, but it only holds the local operating system. All virtual machines reside on cheap iSCSI storage, so I can easily migrate VMs from one compute node to another. The goal being, of course, to separate service failures from hardware failures. (I still have to deal with possible storage failures, of course, but hot-swap hard drive arrays reduce my risk s...