Hi Allen,

according to the documentation (http://www.suse.com/documentation/sl...t_install.html chapter D.3), a rolling update is supported. The steps given in D.2 (which are, according to D.3 basically correct) do not mention setting the node into standby, but I would have assumed that to work (and to get it back operational, of course).

> crm status on node 1 shows node1 standby and node2 offline, and on node 2 it shows node1 and standby and node2 online

Seems that for some reason, you face a split brain situation, i.e. caused by communication failures (firewalls, configuration trouble during/after upgrade, driver problems, etc) - is there anything in the logs that might point you in the right direction?