A customer enabled NFSv4.0 on an SVM and changed the client mount from NFSv3 to NFSv4. Afterwards, the customer found that the directory owner was changed from root to nobody. In this scenario, which statement is true?
A.
The customer did not configure name services on the SVM.
B.
The clients must be restarted to start using NFSv4.
C.
The export policy is not configured properly.
D.
The ID mapping domains do not match between the client and server.
D. The ID mapping domains do not match between the client and server.
When switching from NFSv3 to NFSv4, it is important that the NFSv4 ID mapping domain on the client matches the NFSv4 ID mapping domain on the server. If they do not match, the server may not properly map user IDs, resulting in permissions issues such as the directory owner being changed from root to nobody.
https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/NFSv4x_client_shows_group_permission_nobody_NFSv3_shows_correct_owner_and_clients_domain_does_match_the_SVMs_v4-id-domain
In this scenario, the statement that is true is:
D. The ID mapping domains do not match between the client and server.
When switching from NFSv3 to NFSv4, it is important that the NFSv4 ID mapping domain on the client matches the NFSv4 ID mapping domain on the server. If they do not match, the server may not properly map user IDs, resulting in permissions issues such as the directory owner being changed from root to nobody.
Sources:
- https://docs.netapp.com/us-en/ontap-cli/vserver-nfs-create.html
- https://docs.netapp.com/us-en/ontap-cli/vserver-nfs-modify.html
- https://docs.netapp.com/us-en/ontap/nfs-admin/ontap-export-policy-caches-concept.html