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After creating a file on Windows, why the owner is root and the group is bin on Linux?

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Category:
ontap-9
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nas
Last Updated:

Applies to

  • ONTAP 9
  • CIFS
  • NFS

Answer

  • If the advanced CIFS server option "Map Administrators to UNIX User 'root'" -is-admin-users-mapped-to-root-enabled is set to true, Windows users who are members of the BUILTIN\Administrators group are mapped to UNIX user root unless they are explicitly mapped to a UNIX user
  • In ONTAP, the default local UNIX user root on each SVM has an User ID (UID) of 0 and a primary Group ID (GID) of 1, which has the local UNIX group daemon.  With this configuration, files created by Windows users mapped to UNIX user root will show as owned by UNIX user root (UID 0) and group daemon (GID 1)
  • For the files created by Windows users mapped to UNIX user root, NFS clients may resolve Group ID (GID) 1 to UNIX group bin based on their local configuration (i.e. the /etc/group file or LDAP)

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