RHEL NFSv4 client cannot mount an AIX NFS share - mount.nfs: Remote I/O error

Solution Verified - Updated -

Issue

  • Unable to mount an AIX share from a RHEL NFS client (All RHEL versions could be applicable)
    • mount fails with "Remote I/O error".
    • tcpdump shows NFS4ERR_RESOURCE coming back as a response to GETATTR.

Environment

  • Red Hat Enterprise Linux (RHEL)
  • AIX NFS server

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