As we're continuing to configure Pacemaker, make sure you've followed all of the previous recipes.
Users of some Debian-derivative systems, such as Ubuntu, need to beware! To avoid potential issues, it may be necessary to delete the /lib/udev/rules.d/85-lvm2.rules file if it exists. Some versions of this file automatically mount LVM devices when they appear; such actions can interfere with Pacemaker LVM management.