From: "Dan Kenigsberg" <danken(a)redhat.com&gt; To: "Mario Giammarco" <mgiammarco(a)gmail.com&gt;, doron(a)redhat.com Cc: users(a)ovirt.org Sent: Saturday, October 12, 2013 11:28:18 PM Subject: Re: [Users] Should host reboot trigger migration? On Sat, Oct 12, 2013 at 05:14:45PM +0000, Mario Giammarco wrote: > Hello, > I have a two hosts ovirt cluster. > I rebooted one of the hoping to see the migration of vm on other host. > But it does not happen and so vm are brutally shutdownd. > > Is auto migration supported? Where can I enable it? I am afraid that we have no means for a host to inform Engine about an immanent reboot. A scheduled reboot of a host should begin in moving it to "maintenance" in Engine. However, what you are looking for makes a nice SLA feature, maybe Doron has plans for implementing something similar. Dan.

From: "Mario Giammarco" <mgiammarco(a)gmail.com&gt; To: users(a)ovirt.org Sent: Sunday, October 13, 2013 8:11:32 PM Subject: Re: [Users] Should host reboot trigger migration? Doron Fediuck <dfediuck@...> writes: > > ----- Original Message ----- > > From: "Dan Kenigsberg" <danken@...> > > To: "Mario Giammarco" <mgiammarco@...>, doron@... > > Cc: users@... > > Sent: Saturday, October 12, 2013 11:28:18 PM > > Subject: Re: [Users] Should host reboot trigger migration? > > > > On Sat, Oct 12, 2013 at 05:14:45PM +0000, Mario Giammarco wrote: > > > Hello, > > > I have a two hosts ovirt cluster. > > > I rebooted one of the hoping to see the migration of vm on other host. > > > But it does not happen and so vm are brutally shutdownd. > > > > > > Is auto migration supported? Where can I enable it? > > > > I am afraid that we have no means for a host to inform Engine about an > > immanent reboot. > > > > A scheduled reboot of a host should begin in moving it to "maintenance" > > in Engine. > > > > Hi Mario. > > As Dan explained, in managed data centers a host is first put into > maintenance > mode when needed. This ensures any critical resources are handled properly, > and in this case the VMs are migrated if needed. Many thanks for both replies. I see that putting in "maintenance" mode an host could be the right way to shutdown an host. > so far. We do have thoughts on allowing a shadow VM for fault tolerance in > the > future, so if you're interested let us know. > Yes I am interested to test it! > Thanks for the feedback, > Doron > Thank you too. I dare to ask another thing (but I have already seen negative replies in mailing list): auto startup of virtual machines. It is a feature very useful because in case of an unexpected server shutdown there is no need to call me to restart vms at next boot. Thanks again, Mario