Environment:
Ubuntu server 16.04 (headless)
Dattobd 0.10.3
Urbackupclientbackend 2.1.17.0
The machine has got TWO volumes, /dev/sda1 and /dev/sdb1.
When the backup starts it creates only the snapshot for sda1 and save only the files on sda1.
sdb1 is mounted on /mnt/sdb1 but no file is saved.