What is the maximum number of groups (GIDs) a user can belong to when using NFS with AUTH_UNIX / AUTH_SYS on RHEL

Solution Verified - Updated -

Issue

  • GIDs of users in more than 16 groups are not recognized properly on NFS.
  • I can not change ownership of subdirectory of nfs filesystem, following is the error messages:
$ chown USER:GROUP /nfs-mount-point/file
chown: changing ownership of `/nfs-mount-point/file': Operation not permitted
  • User getting "Permission Denied" error while creating a file on NFS share.
# su - testuser1
$ touch example
touch: cannot touch `example`: Permission denied 
  • What limits are in place for group settings on NFS ?

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • NFS

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