Open Stack

I want to explore the linkage between the proposed exclusive use filter 
and scheduling a little more.  At the Icehouse summit I heard the concern 
that without advance preparation, there may well be zero hosts that are 
acceptable.  Why is that not a concern now?

What does the Nova scheduler do now about maintaining a pool of completely 
unused hosts?

Does Nova regularly migrate VMs in order to achieve some policy of 
maintaining unused hosts, or some other sort of balance?

Does nova-boot now migrate VMs in the case where the only possible 
packings require moving existing VMs?

Is migration really so non-disruptive to the VM's user that Nova can do it 
freely?

Thanks,
Mike
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20140121/9ebab6dd/attachment.html>