More useful information, when i try to attach a volume to an instance, it doesn't works and this messages appears on cloud-debug.log
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08:46:50 DEBUG [ClusterMessageQueue:Volume.10] :1327402010535:VolumeAttachCallback:uid:admin:554eddf9-a354-403e-ac14-dfb0076fad38:MSG_PENDING:cc-t300:
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08:46:50 DEBUG [ClusterMessageQueue:Volume.10] :1327402010536:VolumeAttachCallback:uid:admin:554eddf9-a354-403e-ac14-dfb0076fad38:MSG_PENDING:cc-t300:
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at edu.ucsb.eucalyptus.cloud.ws.VolumeManager.AttachVolume(VolumeManager.java:321)
08:46:50 DEBUG [ClusterMessageQueue:Volume.10] Queued message of type VolumeAttachCallback for cluster cc-t300
08:46:50 DEBUG [ClusterMessageQueue:Thread-24] -> Dequeued message of type VolumeAttachCallback
08:46:50 INFO [ServiceSinkHandler:ReplyQueue.10] :1327402010540:eucalyptus:uid:admin:554eddf9-a354-403e-ac14-dfb0076fad38:MSG_SERVICED:AttachVolumeResponseType:31:
08:46:50 ERROR [OMSourcedElementImpl:New I/O client worker #2-18] Could not get parser from data source for element {http://eucalyptus.ucsb.edu/}AttachVolume
javax.xml.stream.XMLStreamException: Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
Caused by: org.jibx.runtime.JiBXException: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
at edu.ucsb.eucalyptus.msgs.AttachVolumeType.JiBX_eucalyptus_ucsb_edu_marshal_3_0(VmBlockDevice.groovy)
at edu.ucsb.eucalyptus.msgs.JiBX_eucalyptus_ucsb_eduAttachVolumeType_access.marshal()
at edu.ucsb.eucalyptus.msgs.AttachVolumeType.marshal(VmBlockDevice.groovy)
08:46:50 ERROR [WsSecHandler:New I/O client worker #2-18] org.apache.axiom.om.OMException: javax.xml.stream.XMLStreamException: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
org.apache.axiom.om.OMException: javax.xml.stream.XMLStreamException: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
Caused by: javax.xml.stream.XMLStreamException: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
Caused by: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
08:46:50 DEBUG [NioResponseHandler:New I/O client worker #2-18] org.apache.axiom.om.OMException: javax.xml.stream.XMLStreamException: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
org.apache.axiom.om.OMException: javax.xml.stream.XMLStreamException: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
Caused by: javax.xml.stream.XMLStreamException: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
Caused by: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
org.apache.axiom.om.OMException: javax.xml.stream.XMLStreamException: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
Caused by: javax.xml.stream.XMLStreamException: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
Caused by: java.lang.RuntimeException: Error obtaining parser from data source:Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
08:46:50 DEBUG [ClusterMessageQueue:Thread-24] :1327402010559:VolumeAttachCallback:uid:eucalyptus:eucalyptus:QUEUE:cc-t300:QUEUE_TIME:2:SERVICE_TIME:22:QUEUE_LENGTH:0:
Previous response was: [EucalyptusClusterException detailMessage=Channel was closed before the write operation could be completed: [AttachVolumeType volumeId=vol-5A6F063F instanceId=i-43E807F0 device=/dev/vdb remoteDevice=null correlationId=554eddf9-a354-403e-ac14-dfb0076fad38 userId=admin effectiveUserId=eucalyptus _return=false statusMessage=null] cause=com.eucalyptus.util.EucalyptusClusterException: Channel was closed before the write operation could be completed: [AttachVolumeType volumeId=vol-5A6F063F instanceId=i-43E807F0 device=/dev/vdb remoteDevice=null correlationId=554eddf9-a354-403e-ac14-dfb0076fad38 userId=admin effectiveUserId=eucalyptus _return=false statusMessage=null] stackTrace=null]
08:46:50 ERROR [OMSourcedElementImpl:New I/O client worker #2-18] Could not get parser from data source for element {http://eucalyptus.ucsb.edu/}AttachVolume
javax.xml.stream.XMLStreamException: Error in JiBX marshalling: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
Caused by: org.jibx.runtime.JiBXException: null value for element "{http://eucalyptus.ucsb.edu/}remoteDev" from object of type edu.ucsb.eucalyptus.msgs.AttachVolumeType
at edu.ucsb.eucalyptus.msgs.AttachVolumeType.JiBX_eucalyptus_ucsb_edu_marshal_3_0(VmBlockDevice.groovy)
at edu.ucsb.eucalyptus.msgs.JiBX_eucalyptus_ucsb_eduAttachVolumeType_access.marshal()
at edu.ucsb.eucalyptus.msgs.AttachVolumeType.marshal(VmBlockDevice.groovy)