Looking at the job log, the following warnings is logged: items and their contents could not be backed up. When more information of the warning is selected, the list of files that were not backed up.
Warning 2015/02/11 09:28:19 5 Data Plugin xxxx 665905 items and their contents could not be backed up
Warning 2015/02/12 09:41:48 5 Data Plugin xxxx 783502 items and their contents could not be backed up
Warning 2015/02/13 09:53:22 5 Data Plugin xxxx 998916 items and their contents could not be backed up
The list shows the reason “No such file or directory” as seen below
/Volumes/Time Machine/Backups.backupdb/nottm server/2015-02-16-233123 : No such file or directory
/Volumes/Time Machine/Backups.backupdb/nottm server/2015-02-17-013510 : No such file or directory
/Volumes/Time Machine/Backups.backupdb/nottm server/2015-02-17-013510/.Backup.log : No
These are transient files that do not stay on the system for long period of time. The incremental backup creates a list of files that have changed or are new, and then tries to back then up. By the time it reaches the point to backs up these files, they are no longer there.
These files are transient and and usually do not require being backed up.
To remove the warning from the backup log the options are create an exclusion list for this backup, which will exclude the directories that have these files in and these messages should no longer appear in the log .
For information on creating exclusion list see NetVault Backup Plug-in for File System User Guide.
The message can also be removed by deselecting the directories that have these files in from the selection set using the GUI.
Last, the warning could just be ignored.
