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NFSv4.x mounts show file and group owner as nobody

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • NFSv4

Issue

  • The file ownership of the files mounted through NFSv4 from a Linux client is shown as root or nobody.
  • Attempts to change ownership of the file are unsuccessful.
  • When you see nobody for the user and/or group in file listings, that generally means something in NFSv4.x is misconfigured.
  • For example, if user1@NTAP.LOCAL (uid 1234, gid 1234) is accessing an export, then ONTAP must be able to find user1@NTAP.LOCAL (uid 1234, gid 1234). If the user in ONTAP is USER1@NTAP.LOCAL, then it won’t match.
  • The reason for this is because NFSv4 clients send symbolic user/group names rather than numeric userid/groupid as it was in NFSv3 and the cluster needs a way to map this symbolic names to numeric IDs.
  • If the information in /etc/passwd and /etc/group information between the cluster and the Linux host does not match, the cluster will use nobody:nobody for the user/group file ownership.

 

 

 

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