This bug has been copied from bug #726142 and has been proposed to be backported to 5.6 z-stream (EUS).
Created attachment 526070 [details] 5.6.z-revision-2179
Created attachment 526071 [details] 5.6.z-revision-2180
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: In rare cases, rapidly starting and stopping the openais service sometimes resulted in a deadlock. This update adapts the underlying source code to prevent such a deadlock, resolving this issue. Deadlock situations no longer happen during a rapid start/stop process.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2011-1432.html