Snapdiff backup does not update the last backup date for the file space
An incremental backup with -snapdiff option is run and completes successfully, but the filespace "Last Backup Completion Date/Time" field is not updated with the current date/time.
Diagnosing the problem
The snapdiff option is for backing up NAS/N-Series file server volumes that are NFS or CIFS attached. Run an "incremental -snapdiff" of a volume and use the QUERY FILESPACE F=D Tivoli Storage Manager administrative command to query the backed-up volume. The "Last Backup Completion Date/Time" field is not updated.
Resolving the problem
Apply the fix for apar APAR IC75562. With the client fix applied, the file space last backup start and end dates are updated when a full progressive incremental is performed.
For snapdiff operations that are not full progressive incremental, the file space last backup start and end dates are, by design, not updated.