What data do I gather if processes accessing GFS1 are hung on Red Hat Enterprise Linux 5?

Issue

• Processes accessing GFS are hung in state D (uninteruptable sleep)
• Processes accessing GFS are throwing blocked for more than 120 seconds call traces in the messages logs with GFS calls on the stack
• For RHEL 4 please see the procedure documented here and for the procedure for GFS2 then see this article.