Issue with RHEL 5.11 on DELL R720

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I am working on building out a RHEL 5.11 needed for oracle 10g and I have run into an issue during the install, it finds the driver disk, then hangs on loading megaraid_sas driver. Raid 1/Raid 5. I have done linux noprobe which gets me to the select language but hangs keyboard and i am unable to atl-f1,f4 or anything. I have blacklisted isci as well same issue. Any ideas?

i have updated with a screenshot as to where it is stopping.

JM
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Jamie Bainbridge's picture Red Hat Guru 7252 points
21 April 2016 11:05 PM

The R720 is certified for RHEL 5.7 onwards and there are no Additional Notes about this controller.

There's a reported hang on earlier firmware versions, we seem to have repaired that in the driver, but it's probably worth checking if you can update the controller firmware anyway.

It's also worth updating the system BIOS to ensure the ACPI hardware description doesn't have any outstanding issues.

RHEL5 is apparently vulnerable to this driver bug which is fixed in RHEL 6.6, so if you can at least get past this point with the RHEL 6.6 installer it's a possible match. You'd need to open a support case to ask about getting that fixed in RHEL 5.

Where are you loading the driver disk from? If this is someone else's driver, see if you can just use the in-kernel driver.

JM Community Member 40 points
22 April 2016 6:20 PM

Good Points. I checked the firmware and updated the BIOS to no avail. I was using the drivers on the actual disk nothing updated but this is on a PERC H710 controller(firmware updated as well) still resulting in the same hang up. What i was able to do but was the noprobe but the keyboard hangs on changing language. Which is strange... Its almost as if i need to bypass the current SCSI driver from loading.. but skipping the hardware probe breaks any ability to navigate.

JM Community Member 40 points
22 April 2016 7:34 PM

Well adding on to this discussion, while i can not say it is a definite "fix" it seems to be a quick workaround. While setting linux dd=cdrom driverload=ahci i was unable to load the img from disk but doing so allowed me to cancel and bypass the megaraid driver load.

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