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File access and performance issues while CRC errors are present on Network ports

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Applies to

  • ONTAP 9
  • CIFS/NFS (NAS)
  • Network Ports
  • Cyclic Redundancy Check (CRC)

Issue

File access and performance issues while CRC errors are present on Network port.
  • High number of CRC errors reported on a port; example e4a:
Sat Nov 13 00:06:09 +0100 [cluster1-01: vifmgr: vifmgr.cluscheck.crcerrors:alert]: Port e4a on node cluster1-01 is reporting a high number of observed hardware errors, possibly CRC errors
 
  • Continued packet loss:

Sat Nov 13 01:02:00 +0100 [cluster1-01: vifmgr: vifmgr.cluscheck.ctdpktloss:alert]: Continued packet loss when pinging from cluster lif ams2-cluster1-01_clus1 (node cluster1-01) to cluster lif cluster1-02_clus1 (node cluster1-02)

  • Nblade.CifsOperationTimedOut:
Sun Nov 14 08:07:56 +0100 [cluster1-01: kernel: Nblade_CifsOperationTimedOut_1:error]: params: {'remoteBladeID': '61a30da8-624a-11eb-b2e2-d039ea4631cc (cluster1-02)', 'cmdRestartCnt': '0', 'vserverId': '4', 'commandName': 'SMB2_COM_CLOSE', 'isQosEnabled': 'QoS_disabled', 'lastSpinNpError': 'SPINNP_NO_FO_ERROR', 'localIpAddress': '<local_IP>', 'lastCsmError': 'CSM_TIMEOUT', 'clientIpAddress': '<client_IP>', 'suspensionCnt': '31', 'dsId': '2084480404'}
 
  • Junction root lookup errors:
Sun Nov 14 08:05:04 +0100 [cluster1-01: nblade2: Nblade.JunctionRootLookup2:error]: Junction root lookup of a volume in Vserver 5 with MSID 3221226001 has failed for reason "CSM_TIMEOUT".

 

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