Intermittent CIFS access denied due to delay in Domain Controller Discovery
Applies to
- ONTAP 9
- CIFS / SMB
- Windows Domain Controller
Issue
- Users intermittently receive an unexpected access denied when accessing CIFS shares
- Entry in event log show:
ERROR Nblade.CifsOperationTimedOut: Detected a timed out CIFS operation. SMB command for this operation: SMB2_COM_SESSION_SETUP, Number of times this command was suspended: 1
- EMS log:
kernel: Nblade_CifsOperationTimedOut_1:error]: params: {'remoteBladeID': '00000000-0000-0000-0000-000000000000', 'cmdRestartCnt': '0', 'vserverId': '4', 'commandName': 'SMB2_COM_SESSION_SETUP', 'isQosEnabled': 'QoS_disabled', 'lastSpinNpError': 'SPINNP_NO_FO_ERROR', 'localIpAddress': 'xx.xx.xx.xx', 'lastCsmError': 'CSM_OK', 'clientIpAddress': 'xx.xx.xx.xx', 'vserverName': 'SVMNAME', 'suspensionCnt': '1', 'dsId': '0'}
- SECD log:
debug: Acquiring a new NetLogon connection; favoring new { in getBestConnection() at src/connection_manager/secd_connection_manager.cpp:815 }
CRIT : Mutex svcDiscoveryMutex held for 38 seconds { in unlock() at src/utils/secd_lock_maps.cpp:177 }