Dear Milan, Today, i just found that oVirt 4.2 support iLO5 and power management was set on all hosts (hypervisor). I found that if i choose VM lease and shutdown iSCSI network, the VM was shutdown. Then the VM will migrate to another host if the iSCSI network was resumed.
If i just choose enable HA on VM setting, the VM was successfully migrate to another hosts. But i want to ask another question, what if the management network is down? What VM and hosts behavior would you expect? Regards Terry Hung 2018-02-28 22:29 GMT+08:00 Milan Zamazal <mzama...@redhat.com>: > Terry hey <recreati...@gmail.com> writes: > > > I am testing iSCSI bonding failover test on oVirt, but i observed that VM > > were paused and did not migrate to another host. Please see the details > as > > follows. > > > > I have two hypervisors. Since they are running iLO 5 and oVirt 4.2 cannot > > support iLO 5, thus i cannot setup power management. > > > > For the cluster setting, I set "Migrate Virtual Machines" under the > > Migration Policy. > > > > For each hypervisor, I bonded two iSCSI interface as bond 1. > > > > I created one Virtual machine and enable high availability on it. > > Also, I created one Virtual machine and did not enable high availability > on > > it. > > > > When i shutdown one of the iSCSI interface, nothing happened. > > But when i shutdown both iSCSI interface, VM in that hosts were paused > and > > did not migrate to another hosts. Is this behavior normal or i miss > > something? > > A paused VM can't be migrated, since there are no guarantees about the > storage state. As the VMs were paused under erroneous (rather than > controlled such as putting the host into maintenance) situation, > migration policy can't help here. > > But highly available VMs can be restarted on another host automatically. > Do you have VM lease enabled for the highly available VM in High > Availability settings? With a lease, Engine should be able to restart > the VM elsewhere after a while, without it Engine can't do that since > there is danger of resuming the VM on the original host, resulting in > multiple instances of the same VM running at the same time. > > VMs without high availability must be restarted manually (unless storage > domain becomes available again). > > HTH, > Milan >
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