Comment 0 for bug 1192192

Live Migration feature should work with hosts in the same cluster. We can't specify hosts in a cluster to move between!

> I've found here
> <https://wiki.openstack.org/wiki/HypervisorSupportMatrix>that ESX/VC
> drivers supports live-migration, also i found related method in
> code, it uses vmware API "MigrateVM_Task" function.
>
> But i couldn't understand how i should use live-migration:
>
> - standalone ESXi hosts not supports any migration. Therefore
> VMWareESXDriver also not supports migration. Correct, if am wrong.
> - In case vCenter (VMWareVCDriver) i could use vMotion to migrate VMs
> between members of cluster. But nova sees cluster as a single "host" and
> thru "nova live-migration VM" scheduler raise exception "NoValidHost: No
> valid host was found."
>
> My question is: What is the use-case of
> this<https://github.com/openstack/nova/blob/stable/grizzly/nova/virt/vmwareapi/vmops.py#L1018>function