This should be implemented in 4.2.3 and newer. There are more details in the RFE bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1334982 I have never tested it :) On 7/6/21 1:29 PM, Sandro Bonazzola wrote:
Il giorno mar 6 lug 2021 alle ore 13:03 Nir Soffer <nsoffer@redhat.com <mailto:nsoffer@redhat.com>> ha scritto:
On Tue, Jul 6, 2021 at 1:11 PM Nathanaël Blanchet <blanchet@abes.fr <mailto: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.
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 :-)
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Sandro Bonazzola
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