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

On Tue, Jul 6, 2021 at 1:11 PM Nathanaël Blanchet <blanchet@abes.fr> 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. Nir