It seems that several people have been having problems getting Dell OMSA 6.2 to work correctly on CentOS 5.4 x86_64. Specifically, the software does not detect any storage controllers, and therefore also doesn't find any disks. eg.

[root@b034 ~]# omreport storage pdisk controller=0
Invalid controller value. Read, controller=0
No controllers found.

After a little investigation, I found the source of the problem.

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