2.7. Storage Domain Autorecovery in Red Hat Enterprise Virtualization

Hosts in a Red Hat Enterprise Virtualization environment monitor storage domains in their data centers by reading metadata from each domain. A storage domain becomes inactive when all hosts in a data center report that they cannot access the storage domain.

Prior to Red Hat Enterprise Virtualization 3.1, storage domains that became inactive were disconnected by the Manager. Reconnecting to storage when connection issues had been resolved required manual administrator intervention.

Red Hat Enterprise Virtualization 3.1 introduced storage domain autorecovery. Rather than disconnecting an inactive storage domain, the Manager now assumes that the storage domain has become inactive temporarily, because of a temporary network outage for example. Once every 5 minutes, the Manager attempts to re-activate any inactive storage domains.

Administrator intervention may be required to remedy the cause of the storage connectivity interruption, but the Manager handles re-activating storage domains as connectivity is restored.