Fencing problem on Cluster Suite 3.0.12: fenced throws agent error when invoking fence_xvm

I am setting up a highly available cluster of KVM guests. I have setup fence_virtd on the hosts and I was able to manually fence correctly using fence_xvm and and fence_node. The problem is that fencing fails when triggered automatically by rgmanager and fenced. Rgmanager detects when a node is down and triggers fenced, but fenced throws an ambiguous "agent error". This probably means that fence_xvm returned error status, but I so far I cannot make fence_xvm spit it's debug output anywhere. All I know is that fence_virtd, which listens for fence_xvm multicast requests, does not report any fencing requests even while running in super verbose debug output mode.

My cluster.conf is here: http://pastebin.com/5vY3kNqB

I have configured debug logging for fenced in cluster.conf and /etc/sysconfig/cman

Fenced log below:

May 06 11:22:40 fenced cluster node 1 removed seq 356

May 06 11:22:40 fenced fenced:daemon conf 1 0 1 memb 2 join left 1

May 06 11:22:40 fenced fenced:daemon ring 2:356 1 memb 2

May 06 11:22:40 fenced fenced:default conf 1 0 1 memb 2 join left 1

May 06 11:22:40 fenced add_change cg 4 remove nodeid 1 reason 3

May 06 11:22:40 fenced add_change cg 4 m 1 j 0 r 1 f 1

May 06 11:22:40 fenced add_victims node 1

May 06 11:22:40 fenced check_ringid cluster 356 cpg 1:352

May 06 11:22:40 fenced fenced:default ring 2:356 1 memb 2

May 06 11:22:40 fenced check_ringid done cluster 356 cpg 2:356

May 06 11:22:40 fenced check_quorum done

May 06 11:22:40 fenced send_start 2:4 flags 2 started 3 m 1 j 0 r 1 f 1

May 06 11:22:40 fenced receive_start 2:4 len 152

May 06 11:22:40 fenced match_change 2:4 matches cg 4

May 06 11:22:40 fenced wait_messages cg 4 got all 1

May 06 11:22:40 fenced set_master from 2 to complete node 2

May 06 11:22:40 fenced prhin01-vm01 not a cluster member after 0 sec post_fail_delay

May 06 11:22:40 fenced fencing node prhin01-vm01

May 06 11:22:40 fenced fence prhin01-vm01 dev 0.0 agent fence_xvm result: error from agent

May 06 11:22:40 fenced fence prhin01-vm01 failed

May 06 11:22:43 fenced fencing node prhin01-vm01

May 06 11:22:43 fenced fence prhin01-vm01 dev 0.0 agent fence_xvm result: error from agent

May 06 11:22:43 fenced fence prhin01-vm01 failed

May 06 11:22:46 fenced fencing node prhin01-vm01

May 06 11:22:46 fenced fence prhin01-vm01 dev 0.0 agent fence_xvm result: error from agent

May 06 11:22:46 fenced fence prhin01-vm01 failed