Networks discovering problem

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I have installed new RHEV host (RHEL-based) and have added all cluster logical networks to host without saving and rebooted host after. After reboot I cannot add network ("Unexpected exception" is first message and "Bridge already exists" is second).

 

2012-02-01 18:22:04,644 INFO  [org.ovirt.engine.core.bll.AttachNetworkToVdsInterfaceCommand] (http-0.0.0.0-8443-2) Running command: AttachNetworkToVdsInterfaceCommand internal: false. Entities affected :  ID: c6eae3a4-4cd7-11e1-8932-0011259d9202 Type: VDS
2012-02-01 18:22:04,646 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.AddNetworkVDSCommand] (http-0.0.0.0-8443-2) START, AddNetworkVDSCommand(vdsId = c6eae3a4-4cd7-11e1-8932-0011259d9202, networkName=er50, oldNetworkName=null, hostAddr=null, checkConnectivity=false, connectionTimeout=0, vlanId=649, bondName=null, nics=[eth1], inetAddr=null, networkMask=null, gateway=, stp=false, bondingOptions=null, bootProtocol=None), log id: 64e90a5
2012-02-01 18:22:05,065 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.BrokerCommandBase] (http-0.0.0.0-8443-2) Failed in AddNetworkVDS method
2012-02-01 18:22:05,066 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.BrokerCommandBase] (http-0.0.0.0-8443-2) Error code unexpected and error message VDSGenericException: VDSErrorException: Failed to AddNetworkVDS, error = Unexpected exception
2012-02-01 18:22:05,066 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.BrokerCommandBase] (http-0.0.0.0-8443-2) Command org.ovirt.engine.core.vdsbroker.vdsbroker.AddNetworkVDSCommand return value
 Class Name: org.ovirt.engine.core.vdsbroker.vdsbroker.StatusOnlyReturnForXmlRpc
mStatus                       Class Name: org.ovirt.engine.core.vdsbroker.vdsbroker.StatusForXmlRpc
mCode                         16
mMessage                      Unexpected exception


2012-02-01 18:22:05,066 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.BrokerCommandBase] (http-0.0.0.0-8443-2) Vds: 3650M2-top
2012-02-01 18:22:05,066 ERROR [org.ovirt.engine.core.vdsbroker.VDSCommandBase] (http-0.0.0.0-8443-2) Command AddNetworkVDS execution failed. Exception: VDSErrorException: VDSGenericException: VDSErrorException: Failed to AddNetworkVDS, error = Unexpected exception

Update button doesn't work properly because bridges are exist and up but manager know nothing about it.

PZ

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