It's close, but there are some missing pieces I think. The way it manages storage pools would fit your use case, if you import a zpool, for example, it will scan the datasets and can figure out what zvols should be attached to which VMs..

but there's also VM config info under `/etc/pve` or something similar. I'm pretty sure that's some kind of FUSE filesystem, it's supposed to be synchronized between cluster members.. you might be able to host that externally somehow. But that'll probably take some effort.

You'll also need to figure out how to configure `/etc/network/interfaces` on boot for your network config. But that's doable.

Would be pretty neat.