Dear Maintainer, if there is a /etc/init.d/lvm2 and it's modified by the user, this fucking means it IS necessary. I need this script to gracefully deactivate cached volumes before shutdown/reboot, as brain-dead LVM2 still can't do it by itself. Not everyone uses your systemd shit with "blk-availability.service", and nobody has to (as your own "init diversity" policy says). At least, NOTIFY the user when you delete it.