Snapshots allows you to create filesystem snapshots, and rollback the system to a previous snapshot.
Note: This feature requires a Btrfs filesystem. All of the FreedomBox stable disk images use Btrfs.
There are three types of snapshots:
boot: Taken when the system boots up
Software Installation (apt): Taken when software is installed or updated
Timeline: Taken hourly, daily, weekly, monthly, or yearly
The Timeline and Software Installation snapshots can be turned on or off, and you can limit the number of each type of Timeline snapshot. You can also set a percentage of free disk space to be maintained.