<font size=2 face="sans-serif">Hello Everyone,</font>
<br><font size=2 face="sans-serif"> </font>
<br><font size=2 face="sans-serif">I am looking for evacuation support
in openstack. </font>
<br>
<br><font size=2 face="sans-serif">From what I could find, there are following
two commands:</font>
<br>
<br><font size=2 face="sans-serif">1. nova evacuate evacuated_server_name
host_b --on-shared-storage </font>
<br>
<br><font size=2 face="sans-serif">2. nova host-evacuate command</font>
<br>
<br><font size=2 face="sans-serif">However, both seem to have some downtime.</font>
<br>
<br><font size=2 face="sans-serif">What I looking for is something like:</font>
<br>
<br><font size=2 face="sans-serif">1. Host is put in a state, like maintenance
mode, so that no new VMs are provisioned on it. </font>
<br>
<br><font size=2 face="sans-serif">2. Do a live migration from this source
host to any host chosen by the scheduler.</font>
<br>
<br><font size=2 face="sans-serif">This way, there won't be a downtime
for the VMs and the host can be removed / brought down for maintenance.
</font>
<br>
<br><font size=2 face="sans-serif">Apparently, "nova host-update"
--maintenance provides the functionality I am looking for, however, it
is only supported for Xen and unimplemented for KVM due to libvirt limitation.</font>
<br>
<br><font size=2 face="sans-serif">Is there a way to work it around for
KVM ..?</font>
<br><font size=2 face="sans-serif"><br>
</font>
<br><font size=1 face="Arial">Regards,</font>
<br><font size=1 face="Arial">Ashish</font>