No clear warning when copy fails

[Thomas TEMPE]

I just solved a problem on my BiT setup, wherein each backup was a full copy of the source data (no incremental backups).

I had the following error at the beginning of the backup process, using CIFS on a NTFS-based consumer-grade NAS (notice how these lines are marked "[i]", as in "information", and do not appear in the "errors" log viewer window.)

        [I] Création des liens physiques
        [I] cp -aRl "/salon/_BACKUP/backintime/ubuntu-air/thomas/3/20111128-145324-949/backup/"* "/salon/_BACKUP/backintime/ubuntu-air/thomas/3/new_snapshot/backup/"
        [I] returns: 256

The answer lies here :

        https://answers.launchpad.net/backintime/+question/93336
        "the solution is to modify your CIFS mount options and include nosetuids,noperm"

After adding mount options nosetuids,noperm to my backup partition, I managed to solve my problem. However, it took me hours to figure out, partly because the warning message was not obvious.

I am suggesting testing for this error condition, and reporting it to the user, along with a short informative message or link.