Hi, trying to attach an iso domain to engine master:

2016-03-08 15:04:28,386 INFO  [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (default task-50) [477da39f] Lock Acquired to object 'EngineLock:{exclusiveLocks='[bd9860d2-756b-42bd-9cf

6-08c0e96d70dc=<STORAGE, ACTION_TYPE_FAILED_OBJECT_LOCKED>]', sharedLocks='null'}'

2016-03-08 15:04:28,433 INFO  [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (org.ovirt.thread.pool-10-thread-42) [477da39f] Running command: AttachStorageDomainToPoolCommand interna

l: false. Entities affected :  ID: bd9860d2-756b-42bd-9cf6-08c0e96d70dc Type: StorageAction group MANIPULATE_STORAGE_DOMAIN with role type ADMIN,  ID: 07b2decc-9d40-4df6-bfa1-0da26f95df53 Type: StoragePoolAction

 group MANIPULATE_STORAGE_DOMAIN with role type ADMIN

2016-03-08 15:04:28,445 INFO  [org.ovirt.engine.core.bll.storage.connection.ConnectStorageToVdsCommand] (org.ovirt.thread.pool-10-thread-43) [72ff69e2] Running command: ConnectStorageToVdsCommand internal: true.

 Entities affected :  ID: aaa00000-0000-0000-0000-123456789aaa Type: SystemAction group CREATE_STORAGE_DOMAIN with role type ADMIN

2016-03-08 15:04:28,447 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand] (org.ovirt.thread.pool-10-thread-43) [72ff69e2] START, ConnectStorageServerVDSCommand(HostName = local_hos

t, StorageServerConnectionManagementVDSParameters:{runAsync='true', hostId='384c1ab4-e03b-46ff-8e32-8a8b3650235b', storagePoolId='00000000-0000-0000-0000-000000000000', storageType='NFS', connectionList='[Storag

eServerConnections:{id='51ffb87c-c595-4792-b915-50af506dbf67', connection='mididell.home:/var/lib/exports/iso-20160308130525', iqn='null', vfsType='null', mountOptions='null', nfsVersion='null', nfsRetrans='null

', nfsTimeo='null', iface='null', netIfaceName='null'}]'}), log id: 2e547cc1

2016-03-08 15:04:29,454 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand] (org.ovirt.thread.pool-10-thread-43) [72ff69e2] FINISH, ConnectStorageServerVDSCommand, return: {51ffb87c-

c595-4792-b915-50af506dbf67=0}, log id: 2e547cc1

2016-03-08 15:04:29,455 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.AttachStorageDomainVDSCommand] (org.ovirt.thread.pool-10-thread-42) [477da39f] START, AttachStorageDomainVDSCommand( AttachStorageDomainVD

SCommandParameters:{runAsync='true', storagePoolId='07b2decc-9d40-4df6-bfa1-0da26f95df53', ignoreFailoverLimit='false', storageDomainId='bd9860d2-756b-42bd-9cf6-08c0e96d70dc'}), log id: 5bc96473

2016-03-08 15:04:30,549 ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.AttachStorageDomainVDSCommand] (org.ovirt.thread.pool-10-thread-42) [477da39f] Failed in 'AttachStorageDomainVDS' method

2016-03-08 15:04:30,558 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (org.ovirt.thread.pool-10-thread-42) [477da39f] Correlation ID: null, Call Stack: null, Custom Event ID: -1, M

essage: VDSM command failed: Error in storage domain action: (u'sdUUID=bd9860d2-756b-42bd-9cf6-08c0e96d70dc, spUUID=07b2decc-9d40-4df6-bfa1-0da26f95df53',)

2016-03-08 15:04:30,558 ERROR [org.ovirt.engine.core.vdsbroker.irsbroker.AttachStorageDomainVDSCommand] (org.ovirt.thread.pool-10-thread-42) [477da39f] Command 'AttachStorageDomainVDSCommand( AttachStorageDomain

VDSCommandParameters:{runAsync='true', storagePoolId='07b2decc-9d40-4df6-bfa1-0da26f95df53', ignoreFailoverLimit='false', storageDomainId='bd9860d2-756b-42bd-9cf6-08c0e96d70dc'})' execution failed: IRSGenericExc

eption: IRSErrorException: Failed to AttachStorageDomainVDS, error = Error in storage domain action: (u'sdUUID=bd9860d2-756b-42bd-9cf6-08c0e96d70dc, spUUID=07b2decc-9d40-4df6-bfa1-0da26f95df53',), code = 350

2016-03-08 15:04:30,558 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.AttachStorageDomainVDSCommand] (org.ovirt.thread.pool-10-thread-42) [477da39f] FINISH, AttachStorageDomainVDSCommand, log id: 5bc96473

2016-03-08 15:04:30,558 ERROR [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (org.ovirt.thread.pool-10-thread-42) [477da39f] Command 'org.ovirt.engine.core.bll.storage.domain.AttachS

torageDomainToPoolCommand' failed: EngineException: org.ovirt.engine.core.vdsbroker.irsbroker.IrsOperationFailedNoFailoverException: IRSGenericException: IRSErrorException: Failed to AttachStorageDomainVDS, erro

r = Error in storage domain action: (u'sdUUID=bd9860d2-756b-42bd-9cf6-08c0e96d70dc, spUUID=07b2decc-9d40-4df6-bfa1-0da26f95df53',), code = 350 (Failed with error StorageDomainActionError and code 350)

2016-03-08 15:04:30,559 INFO  [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (org.ovirt.thread.pool-10-thread-42) [477da39f] Command [id=6426d8ba-223f-401d-8fed-c537620bd4c3]: Compensating NEW_ENTITY_ID of org.ovirt.engine.core.common.businessentities.StoragePoolIsoMap; snapshot: StoragePoolIsoMapId:{storagePoolId='07b2decc-9d40-4df6-bfa1-0da26f95df53', storageId='bd9860d2-756b-42bd-9cf6-08c0e96d70dc'}.

2016-03-08 15:04:30,575 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (org.ovirt.thread.pool-10-thread-42) [477da39f] Correlation ID: 477da39f, Job ID: 13fbe031-0c58-4fff-bc38-324cce2e4c3f, Call Stack: null, Custom Event ID: -1, Message: Failed to attach Storage Domain ISO_DOMAIN to Data Center local_datacenter. (User: admin@internal)

2016-03-08 15:04:30,584 INFO  [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (org.ovirt.thread.pool-10-thread-42) [477da39f] Lock freed to object 'EngineLock:{exclusiveLocks='[bd9860d2-756b-42bd-9cf6-08c0e96d70dc=<STORAGE, ACTION_TYPE_FAILED_OBJECT_LOCKED>]', sharedLocks='null'}'

Any hint on what can be the reason?