Hello Guys,

We are evaluating oVirt , and this morning I had to face to a side effect ( small impact because oVIrt Datacenter is actually a small one).

1. I added a new Storage domain from iSCSI SAN
2. Not all hosts HBA were authorized to access to this LUN (lack of configuration on SAN side)
3. One of ovirt Node on four nodes into my datacenter couldn’t access to the LUN => this ovirt node has gone into “Non-responsible” state. => All VMs running into this host has gone to another

My question is regarding the “operational mode” :

• If I add a Storage Domain which is not already fully configured / badly configured (“regarding HBA acces granted on SAN side), when I add the Storage Domain to my DC, each oVirt node into my datacenter will move to “non-operationnal” state after fews seconds since no one will be able to log into the new LUN ? (This state change can have some “major effect”  (vm migration between hosts without any logic) ?)

Does I miss something ?

Is there a guard ? Is Cluster Fencing policy option: Skip fencing on cluster connectivity issues => Threshold: xx% can protect this type of error  ?

Regards,

Jean-Baptiste