How can I implement automatic backup in OpenWRT?

Question

User interface

There is a router with OpenWRT Attitude Adjustment 12.09 (TP-link tl-wr842ndv2). A 4Gb drive is connected to it and mounted as /
It is necessary to automate the process of saving backup copies of settings that can be done in the LuCI 0.11.1 web interface: System> Backup / Firmware> Create archive.
What can be done?

Answer 1

Maybe it's easier to add scheduled backup to cron? something like
tar zcf /path/backup.tar.gz /overlay