This kind of grub addon will extend the grub boot menu by a additional
submenu where a BTRFS snapshot can be selected to directly use as root
volume and boot into it.
The grub-btrfsd daemon is using inotify(tools) to watch the snapshot directory for
new or deleted snapshots and calls grub-mkconfig to adjust the snapshot grub submenu
Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org> Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>