NFS ESTALE on RHEL5/6 (not RHEL4) Client doing mkdir/rmdir against NetApp Server

Solution Verified - Updated -

Issue

  • More frequent "Stale NFS file handle" messages on RHEL5/6 (but not RHEL4) when doing some simple NFS file manipulation.
  • The following script reproduces the problem, but not reliably:
    while true; do
  rm -rf /proj/something/test_dir/bpetrini
  mkdir /proj/something/test_dir/bpetrini
  echo blah > testfile
  cp testfile /proj/something/test_dir/testfile
done
  • The following characteristics increase liklihood of reproduction: 
    • on a high traffic mountpoint (though the immediate parent of the directory I'm manipulating is untouched)
    • from a high traffic client (a many-user interactive will repro much more often than an idle grid node)
  • How do I use rpcdebug to capture verbose rpc debug logs for troubleshooting nfs problems(see diagnostics section)

Environment

  • NFS client
    • Red Hat Enterprise Linux (RHEL) 5.5, 5.7, 6.0
    • No errors on RHEL4.9
  • NFS Server 
    • NetApp Release 8.0.1P4 7-Mode

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