root user unable to access nfs folder on few servers whereas possible for few servers

Solution In Progress - Updated -

Issue

  • We have a nfs share from NAS & it is exported to wide range of IP.
  • We are able to mount it successfully on all those servers to where it is exported. Accessing the mount point(cd command) throws error (permission denied).
root@node1#  df -hPT /usr/sap/conv/
Filesystem                             Type  Size  Used Avail Use% Mounted on
node31:/vol/vol/xyz    250G  166G   85G  67% /usr/sap/conv

root@node1#  cd /usr/sap/conv/
bash: cd: /usr/sap/conv/: Permission denied

Environment

  • Red Hat Enterprise Linux 6
  • NFS

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