Factory Reset
In this context, Factory reset means restoring a device to the original state. This is a feature of LmP, rather than of the FoundriesFactory™ Platform. A reset is performed as a script in ramdisk during boot. It is triggered by the presence of specific files. Presence of the files is specified in the following order:
/var/.factory_reset/var/.factory_reset_keep_sota/var/.factory_reset_keep_sota_docker
Each file has specific meaning. When a higher priority file is detected, remaining files are ignored.
Full Factory Reset
When the file /var/.factory_reset is present, the script performs a full reset.
A full reset means restoring contents of /etc/ and /var/ from ostree.
All contents created in these directories at runtime will be erased.
Partial Factory Reset
There are currently two options in partial reset. The main difference with full reset is that the device remains connected to your Factory.
Keep SOTA
When the file /var/.factory_reset_keep_sota is present,
contents of /etc/ are restored from ostree.
Contents of /var/ are partially removed.
/var/sota/ contents are kept to allow aktualizr-lite to be preserved.
Docker images and compose apps are deleted.
Keep SOTA and Docker
When the file /var/.factory_reset_keep_sota_docker is present,
contents of /etc/ are restored from ostree.
Contents of /var/ are partially removed.
/var/sota/ contents are kept to allow aktualizr-lite and
compose-apps to be preserved.
/var/lib/ is preserved as the Docker objects are stored there.