Comment 3 for bug 1052449

I reproduce this issue. When I go to reboot my machine I see this message:

pcmk_shutdown: Preventing Corosync shutdown. Please ensure Pacemaker is stopped first.

If I manually re-run /etc/init.d/pacemaker stop, everything follows and shuts down as expected.

Adding 'corosync' to the Required-Stop: line in the pacemaker init script doesn't appear to solve the issue for me though.