[Users] Should host reboot trigger migration?

[Mario Giammarco]

Doron Fediuck <dfediuck at ...> writes:

> 
> ----- Original Message -----
> > From: "Dan Kenigsberg" <danken at ...>
> > To: "Mario Giammarco" <mgiammarco at ...>, doron at ...
> > Cc: users at ...
> > 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