[ovirt-users] Re: what happens to vms when a host shutdowns?

Il giorno mar 6 lug 2021 alle ore 13:03 Nir Soffer <nsoffer(a)redhat.com&gt; ha scritto: > On Tue, Jul 6, 2021 at 1:11 PM Nathanaël Blanchet <blanchet(a)abes.fr&gt; > wrote: > > We are installing UPS powerchute client on hypervisors. > > > > What is the default vms behaviour of running vms when an hypervisor is > > ordered to shutdown: do the vms live migrate or do they shutdown > > properly (even the restart on an other host because of HA) ? > > In general VMs are not restarted after an unexpected shutdown, but HA VMs > are restarted after failures. > > If the HA VM has a lease, it can restart safely on another host > regardless of > the original host status. If the HA VM does not have a lease, the system > must > wait until the original host is up again to check if the VM is still > running on this > host. > > Arik can add more details on this. > I think the question is not related to what happens after the host is back. I think the question is what happens when the host goes down. To me, the right way to shutdown a host is putting it first to maintenance (VM evacuate to other hosts) and then shutdown.

On emergency shutdown without moving the host to maintenance first I think libvirt is communicating the host is going down to the guests and tries to cleanly shutdown vms while the host is going down. Arik please confirm :-) > > Nir > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/HXVXSLXQYZX... > -- Sandro Bonazzola MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV Red Hat EMEA <https://www.redhat.com/> sbonazzo(a)redhat.com <https://www.redhat.com/> *Red Hat respects your work life balance. Therefore there is no need to answer this email out of your office hours. <https://mojo.redhat.com/docs/DOC-1199578>*