At this point, is is important to save a copy of the Cluster Information Base (CIB). The CIB to save is stored in a file named cib.xml, normally located in /var/lib/heartbeat/crm.

# cp /var/lib/heartbeat/crm/cib.xml ~

You need to perform this step on only one node currently connected to the cluster. Do not delete this file, it will be restored later.