2018-07-25 18:13:54,253+03 WARN  [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (default task-30) [fa0fb8c1-7056-4cbd-801a-49b640b78e10] Detaching Storage Domain 'a0e51739-17b4-46c3-a99c-7e14046b6133' from it's previous storage pool '00000000-0000-0000-0000-000000000000' has failed. The meta data of the Storage Domain might still indicate that it is attached to a different Storage Pool.
2018-07-25 18:13:54,253+03 ERROR [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (default task-30) [fa0fb8c1-7056-4cbd-801a-49b640b78e10] Command 'org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand' failed: EngineException: org.ovirt.engine.core.vdsbroker.irsbroker.IrsOperationFailedNoFailoverException: IRSGenericException: IRSErrorException: Failed to DetachStorageDomainVDS, error = Cannot acquire host id: (u'a0e51739-17b4-46c3-a99c-7e14046b6133', SanlockException(19, 'Sanlock lockspace add failure', 'No such device')), code = 661 (Failed with error AcquireHostIdFailure and code 661)