Unix root user is unable to access NTFS volume in ONTAP 9
Applies to
- ONTAP 9
- NTFS security style
- NFS
Issue
This issue can manifest in multiple ways:
- When an NFS client attempts to access an NTFS volume as root (UID 0) user, they may get access denied/permission denied
Example for secd authentication show-creds
Error: Get user credentials procedure failed [ 0 ms] Determined UNIX id 0 is UNIX user 'root' [ 0] Trying to map 'root' to Windows user 'root' using implicit mapping [ 1] Using a cached connection to fr000-prddc001.eu.els.local [ 2] Could not find Windows name 'root' **[ 2] FAILURE: Name mapping for UNIX user 'root' failed with transient errors.
- Sectrace confirms:
Node Index Filter Details Reason --------------- ----- -------------------------- ------------------------------ LDSNASPA6-01 1 Security Style: NTFS and Access is denied because the NT ACL UNIX user could not be mapped to a valid NT user while reading the user's access rights on an object.
- If the SVM's root volume is NTFS and an NFS client is accessing a UNIX volume under the SVM, they may get access denied