<font size=2 face="sans-serif">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?</font>
<br>
<br><font size=2 face="sans-serif">What does the Nova scheduler do now
about maintaining a pool of completely unused hosts?</font>
<br>
<br><font size=2 face="sans-serif">Does Nova regularly migrate VMs in order
to achieve some policy of maintaining unused hosts, or some other sort
of balance?</font>
<br>
<br><font size=2 face="sans-serif">Does nova-boot now migrate VMs in the
case where the only possible packings require moving existing VMs?</font>
<br>
<br><font size=2 face="sans-serif">Is migration really so non-disruptive
to the VM's user that Nova can do it freely?</font>
<br>
<br><font size=2 face="sans-serif">Thanks,</font>
<br><font size=2 face="sans-serif">Mike</font>