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NFS not responding with Nblade.nfsRCChecksumMismatch error

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • NFSv3
  • OpenStack environments

Issue

  • Virtual machines experience latency or I/O stalls
  • Linux host report NFS client errors

kernel: nfs: server xxx.xxx.xxx.xxx not responding, still trying

  • Storage logs show EMS events

Nblade.nfsRCChecksumMismatch:alert]: Replay cache checksum mismatch detected in retransmitted NFS request from client. Vserver ID is 5; service protocol:version is NFS:3, Rpc Xid 0x12xxxxxx; client IP address:port is xxx.xxx.xxx.xxx:947. local IP address is yyy.yyy.yyy.yyy; NFS procedure number is 7. 

  • Issue occurs intermittently during specific time windows

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