RHEV-M error : nonOperationalReason=NETWORK_UNREACHABLE

We had to perform  general power cut for our lab servers including the RHEV  ones . Before  this I set all hosts in the maintanance mode.

After the all servers are up and running I cannot get RHEV  to normal - host servers are in non operational mode , fc  domain is in non-responsive mode

/var/log/rhevm/rhevm.log  when tried to activate one of the hosts:

2012-02-12 14:02:47,973 INFO  [org.ovirt.engine.core.vdsbroker.SetVdsStatusVDSCommand] (pool-11-thread-19) START, SetVdsStatusVDSCommand(vdsId = bb17a744-0b9e-11e1-bed0-2c27d7287d08, status=NonOperational, nonOperationalReason=NETWORK_UNREACHABLE), log id: 78dafc0c

2012-02-12 14:02:47,978 INFO  [org.ovirt.engine.core.bll.SetNonOperationalVdsCommand] (pool-11-thread-19) Host RH6LAB2 is set to Non-Operational, it is missing the following networks: apps,

2012-02-12 13:59:50,903 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.VdsBrokerCommand] (QuartzScheduler_Worker-83) XML RPC error in command GetCapabilitiesVDS, the error was: java.util.concurrent.TimeoutException

Ping to it works

/Vlad .