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Access denied for Windows NFS client UID -2 GID -2

  1. Last updated
    Dec 19, 2024
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Category:
ontap-9
Specialty:
nas
Last Updated:
12/19/2024, 4:42:21 AM

Applies to

  • ONTAP 9
  • NFS
  • Windows NFS client

Issue

  • Access denied for NFS operations using Windows NFS client

Example:

clipboard_e8d9eeaccee9df169f8ce632204b54e6c.png

Note: Screenshot of Windows popup Destination Folder Acces Denied stating error: You need permission to perform this action (this is not the only way insufficient privileges may manifest)

  • When enabling Windows client for NFS a UNIX user is created having default UID and GID as -2 (or 4294967294).

C:\Users\Administrator.DOMAIN>mount

Local    Remote                                 Properties
-------------------------------------------------------------------------------
Z:       \\10.xx.xx.20\vol1                     UID=-2, GID=-2
                                                rsize=65536, wsize=65536
                                                mount=hard, timeout=0.8
                                                retry=1, locking=yes
                                                fileaccess=765, lang=ANSI
                                                casesensitive=no
                                                sec=sys

  • When accessing data, the user gets insufficient privileges.

cluster1::> vserver security file-directory show-effective-permissions -vserver svm1 -unix-user-name user1 -path /vol1/Folder1

              Vserver: svm1
    Windows User Name: NASLAB\user1
       Unix User Name: user1
            File Path: /vol1/Folder1
      CIFS Share Path: -
Effective Permissions:
                       Effective File or Directory Permission: 0x1200b9
                        Read
                        Read EA
                        Write EA
                        Execute
                        Read Attributes
                        Read Control
                        Synchronize

 

 

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