NetApp NFS server returns NFS4ERR_BAD_SEQID (10026) and 'bad sequence-id' errors seen in messages file due to previous OPEN or CLOSE completing with an error

Solution Verified - Updated -

Issue

  • In the NFS client's messages file we see error messages indicating bad sequence-id
May  1 09:41:30 localhost kernel: NFS: v4 server mynfsserver  returned a bad sequence-id error!
  • A tcpdump shows NFS4ERR_BAD_SEQID (10026) and prior to that, some OPEN, CLOSE, or other locking operation completing with a different error code such as NFS4ERR_NOSPC or NFS4ERR_ADMIN_REVOKED

Environment

  • Red Hat Enterprise Linux (NFS client)
  • NetApp (NFS server)
    • Seen on Data Ontap 8.2.3
    • Seen on Data Ontap 8.2.2P2 7-Mode
  • NFS4

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