I added a new host to our ovirt. Everything went good, exept in the beginnen there was a problem with the firmware of the FibreCard but that is solved (maybe relevant to the issue coming up ;-) ), host is green en up now. But when I tried to migrate a machine for testing purpose to see if everythin was ok, I get the following error in the engine.log and the migration fails:

2014-02-27 08:33:08,082 INFO  [org.ovirt.engine.core.bll.MigrateVmCommand] (pool-6-thread-49) [f1a68d8] Running command: MigrateVmCommand internal: false. Entities affected :  ID: 3444fc9d-0395-4cbb-9a11-28a42802560c Type: VM
2014-02-27 08:33:08,362 INFO  [org.ovirt.engine.core.vdsbroker.MigrateVDSCommand] (pool-6-thread-49) [f1a68d8] START, MigrateVDSCommand(HostName = soyuz, HostId = 6dfa2f9c-85c6-4fb3-b65f-c84620115a1a, vmId=3444fc9d-0395-4cbb-9a11-28a42802560c, srcHost=soyuz.brusselsairport.aero, dstVdsId=6707fa40-753a-4c95-9304-e47198477e4d, dstHost=buran.brusselsairport.aero:54321, migrationMethod=ONLINE, tunnelMigration=false), log id: 50cd7284
2014-02-27 08:33:08,371 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateBrokerVDSCommand] (pool-6-thread-49) [f1a68d8] VdsBroker::migrate::Entered (vm_guid=3444fc9d-0395-4cbb-9a11-28a42802560c, srcHost=soyuz.brusselsairport.aero, dstHost=buran.brusselsairport.aero:54321,  method=online
2014-02-27 08:33:08,405 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateBrokerVDSCommand] (pool-6-thread-49) [f1a68d8] START, MigrateBrokerVDSCommand(HostName = soyuz, HostId = 6dfa2f9c-85c6-4fb3-b65f-c84620115a1a, vmId=3444fc9d-0395-4cbb-9a11-28a42802560c, srcHost=soyuz.brusselsairport.aero, dstVdsId=6707fa40-753a-4c95-9304-e47198477e4d, dstHost=buran.brusselsairport.aero:54321, migrationMethod=ONLINE, tunnelMigration=false), log id: 20806b79
2014-02-27 08:33:08,441 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateBrokerVDSCommand] (pool-6-thread-49) [f1a68d8] FINISH, MigrateBrokerVDSCommand, log id: 20806b79
2014-02-27 08:33:08,451 INFO  [org.ovirt.engine.core.vdsbroker.MigrateVDSCommand] (pool-6-thread-49) [f1a68d8] FINISH, MigrateVDSCommand, return: MigratingFrom, log id: 50cd7284
2014-02-27 08:33:08,491 INFO  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (pool-6-thread-49) [f1a68d8] Correlation ID: f1a68d8, Job ID: c3642418-3f05-41eb-8b1d-07fe04867742, Call Stack: null, Custom Event ID: -1, Message: Migration started (VM: ADW-DevSplunk, Source: soyuz, Destination: buran, User: admin@internal).
2014-02-27 08:33:20,036 INFO  [org.ovirt.engine.core.vdsbroker.VdsUpdateRunTimeInfo] (DefaultQuartzScheduler_Worker-82) VM ADW-DevSplunk 3444fc9d-0395-4cbb-9a11-28a42802560c moved from MigratingFrom --> Up
2014-02-27 08:33:20,042 INFO  [org.ovirt.engine.core.vdsbroker.VdsUpdateRunTimeInfo] (DefaultQuartzScheduler_Worker-82) Adding VM 3444fc9d-0395-4cbb-9a11-28a42802560c to re-run list
2014-02-27 08:33:20,051 ERROR [org.ovirt.engine.core.vdsbroker.VdsUpdateRunTimeInfo] (DefaultQuartzScheduler_Worker-82) Rerun vm 3444fc9d-0395-4cbb-9a11-28a42802560c. Called from vds soyuz
2014-02-27 08:33:20,107 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateStatusVDSCommand] (pool-6-thread-50) START, MigrateStatusVDSCommand(HostName = soyuz, HostId = 6dfa2f9c-85c6-4fb3-b65f-c84620115a1a, vmId=3444fc9d-0395-4cbb-9a11-28a42802560c), log id: 75ac0a46
2014-02-27 08:33:20,124 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateStatusVDSCommand] (pool-6-thread-50) Failed in MigrateStatusVDS method
2014-02-27 08:33:20,130 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateStatusVDSCommand] (pool-6-thread-50) Error code noConPeer and error message VDSGenericException: VDSErrorException: Failed to MigrateStatusVDS, error = Could not connect to peer VDS
2014-02-27 08:33:20,136 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateStatusVDSCommand] (pool-6-thread-50) Command org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateStatusVDSCommand return value
 StatusOnlyReturnForXmlRpc [mStatus=StatusForXmlRpc [mCode=10, mMessage=Could not connect to peer VDS]]
2014-02-27 08:33:20,139 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateStatusVDSCommand] (pool-6-thread-50) HostName = soyuz
2014-02-27 08:33:20,145 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateStatusVDSCommand] (pool-6-thread-50) Command MigrateStatusVDS execution failed. Exception: VDSErrorException: VDSGenericException: VDSErrorException: Failed to MigrateStatusVDS, error = Could not connect to peer VDS
2014-02-27 08:33:20,148 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.MigrateStatusVDSCommand] (pool-6-thread-50) FINISH, MigrateStatusVDSCommand, log id: 75ac0a46
2014-02-27 08:33:20,154 INFO  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (pool-6-thread-50) Correlation ID: f1a68d8, Job ID: c3642418-3f05-41eb-8b1d-07fe04867742, Call Stack: null, Custom Event ID: -1, Message: Migration failed due to Error: Could not connect to peer host. Trying to migrate to another Host (VM: ADW-DevSplunk, Source: soyuz, Destination: buran).