There’s been a few changes with openhab2, not least the change to jsondb (replacing mapdb) for saving configuration through the UI. /mnt/rwdata is a read/write usb key. Any config I wish to save is moved to /etc/openhab2 so I can manage it easily.
Below are the steps I’m currently using:
mount -t tmpfs tmpfs /var/lib/openhab2/cache
mount -t tmpfs tmpfs /var/lib/openhab2/tmp
mount -t tmpfs tmpfs /var/lib/openhab2/log
rm /var/lib/openhab2/port && ln -s /var/lib/openhab2/tmp/port /var/lib/openhab2/port
rm -rf /var/lib/openhab2/lock && ln -s /var/lib/openhab2/tmp/lock /var/lib/openhab2/lock
rm -rf /var/lib/openhab2/persistence && ln -s /mnt/rwdata/openhab2/persistence /var/lib/openhab2/persistence
mv /var/lib/openhab2/etc /etc/openhab2/etc
ln -s /etc/openhab2/etc /var/lib/openhab2/etc
mv /var/lib/openhab2/jsondb /etc/openhab2/jsondb
ln -s /etc/openhab2/jsondb /var/lib/openhab2/jsondb