During a routine scheduled upgrade window I upgraded to the latest Dell OMSA on a range of Dell PowerEdge servers running CentOS. After the upgrade, shell scripts that check the health of disks started reporting that no storage controllers can be found.
# omreport storage pdisk controller=0
Invalid controller value. Read, controller=0
No controllers found.
After some digging through the Dell mailling lists it became apparent that i’m missing the Dell Firmware Tools on my installation. Installing the firmware tools solved the problem.
# yum -y install dell_ft_install
# srvadmin-services.sh restart
Once done, all was fine.