Empty Backup from Cockpit

NethServer Version: NethServer release 7.7.1908 (final)
Hi, I configured data backup via rsync on USB-Stick

If I run it, it seems to be o.k.

log

Backup: ns-backup-data
Backup started at 2020-02-20 16:58:29
Pre backup scripts status: SUCCESS
df: ‘’: No such file or directory
rsync_tmbackup: Previous backup found - doing incremental backup from /mnt/backup-ns-backup-data/nethserver2/2020-02-20-164205
rsync_tmbackup: Creating destination /mnt/backup-ns-backup-data/nethserver2/2020-02-20-165835
rsync_tmbackup: Starting backup…
rsync_tmbackup: From: /
rsync_tmbackup: To: /mnt/backup-ns-backup-data/nethserver2/2020-02-20-165835/
rsync_tmbackup: Running command:
rsync_tmbackup: rsync -D --numeric-ids --links --hard-links --one-file-system --times --recursive --perms --owner --group --stats --human-readable --files-from=/tmp/QlK_HvCVgZ --exclude-from=/tmp/VWVr8j9_Ai --log-file ‘/root/.rsync_tmbackup/2020-02-20-165835.log’ --link-dest=’/mnt/backup-ns-backup-data/nethserver2/2020-02-20-164205’ – ‘/’ ‘/mnt/backup-ns-backup-data/nethserver2/2020-02-20-165835/’

Number of files: 279 (reg: 206, dir: 73)
Number of created files: 9 (reg: 6, dir: 3)
Number of deleted files: 0
Number of regular files transferred: 108
Total file size: 92.16M bytes
Total transferred file size: 21.77M bytes
Literal data: 21.78M bytes
Matched data: 0 bytes
File list size: 0
File list generation time: 0.001 seconds
File list transfer time: 0.000 seconds
Total bytes sent: 21.79M
Total bytes received: 2.38K

sent 21.79M bytes received 2.38K bytes 43.59M bytes/sec
total size is 92.16M speedup is 4.23
rsync_tmbackup: Backup completed without errors.
Action ‘backup-data-rsync ns-backup-data’: SUCCESS
Post backup scripts status: SUCCESS
Backup status: SUCCESS
Backup ended at 2020-02-20 16:58:37
Time elapsed: 0 hours, 0 minutes, 8 seconds

Disk Usage:
Size Used Available Use%
119.19 GB 139.26 MB 119.05 GB 0.11%

But if I check it:
root@nethserver2 /]# ls /mnt/backup-ns-backup-data/nethserver2/2020-02-20-165835/
ls: cannot access /mnt/backup-ns-backup-data/nethserver2/2020-02-20-165835/: No such file or directory
[root@nethserver2 /]# ls /mnt/backup-ns-backup-data/nethserver2/
ls: cannot access /mnt/backup-ns-backup-data/nethserver2/: No such file or directory
[root@nethserver2 /]# ls /mnt/backup-ns-backup-data/
[root@nethserver2 /]#

permission problem for the backup service on the USB stick?

After backup usb drive is unmounted by the backup script.

Thank you for this hint. I can’t find such information inside the documentation.