Backing up using the CLI
As an alternative to performing application backup from the Control Center browser interface, you can use the command-line interface (CLI).
Before starting a backup, Control Center estimates the size of the backup file and compares it to the amount of free space. If storage space is insufficient, Control Center does not start a backup. Exit code 1 indicates insufficient space. If storage space is insufficient, take action to increase available space, and then try the backup again.
The default directory for backup files is /opt/serviced/var/backups. The directory can be changed by specifying the SERVICED_BACKUPS_PATH environment variable in the Control Center configuration file, /etc/default/serviced.