Hello everyone! I'm init a glusterfs vm center , and now doing storage domain fail torage . Still get 'Cannot acquire host id'. Env: OS Version:RHEL - 6 - 4.el6.centos.10 Kernel Version:2.6.32 - 358.14.2.el6.x86_64 KVM Version:0.12.1.2 - 2.355.el6 LIBVIRT Version: libvirt-1.1.1-1.el6 VDSM Version: vdsm-4.12.0-0.1.rc3.el6 SPICE Version:0.12.0 - 12.el6 iSCSI Initiator Name:iqn.1994-05.com.redhat:9ea82ec11b83 SPM Priority: Active VMs: 0 CPU Name:Intel SandyBridge Family CPU Type:Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz CPU Sockets: 1 CPU Cores per Socket: 6 CPU Threads per Core:2 (SMT Enabled) Physical Memory: 24135 MB total, 965 MB used, 23170 MB free Swap Size: 23999 MB total, 0 MB used, 23999 MB free Shared Memory: 0% Max free Memory for scheduling new VMs: 23749 MB Memory Page Sharing: Inactive Automatic Large Pages: Always The error message is : 2013-08-27 12:13:25,814 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStoragePoolVDSCommand] (pool-6-thread-50) Failed in CreateStoragePoolVDS method 2013-08-27 12:13:25,815 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStoragePoolVDSCommand] (pool-6-thread-50) Error code AcquireHostIdFailure and error message VDSGenericException: VDSErrorException: Failed to CreateStoragePoolVDS, error = Cannot acquire host id: ('9a8554b5-c514-4e46-91cc-b0490a977d55', SanlockException(22, 'Sanlock lockspace add failure', 'Invalid argument')) 2013-08-27 12:13:25,817 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStoragePoolVDSCommand] (pool-6-thread-50) Command CreateStoragePoolVDS execution failed. Exception: VDSErrorException: VDSGenericException: VDSErrorException: Failed to CreateStoragePoolVDS, error = Cannot acquire host id: ('9a8554b5-c514-4e46-91cc-b0490a977d55', SanlockException(22, 'Sanlock lockspace add failure', 'Invalid argument')) 2013-08-27 12:13:25,819 ERROR [org.ovirt.engine.core.bll.storage.AddStoragePoolWithStoragesCommand] (pool-6-thread-50) Command org.ovirt.engine.core.bll.storage.AddStoragePoolWithStoragesCommand throw Vdc Bll exception. With error message VdcBLLException: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to CreateStoragePoolVDS, error = Cannot acquire host id: ('9a8554b5-c514-4e46-91cc-b0490a977d55', SanlockException(22, 'Sanlock lockspace add failure', 'Invalid argument')) (Failed with VDSM error AcquireHostIdFailure and code 661) What can i do now ? many thanks