Comment 5 for bug 1755602

We could, but we'd need to make it more efficient like we did for compute nodes by keeping a mapped bit on the object. For something backportable, we should just do the flag for now.

Going forward, it makes less sense to do this based on services for vm, because compute nodes can't float between services, so lacking a compute node means the service can't be scheduled to anyway. I'm not sure how I feel about making this service-focused by default, but I'll think about it and we can handle that after we at least make it possible I think.