[Centos] 2.4.21-27.0.1.ELsmp & megaraid2 problem

Toni list-toni at ntg.fi
Fri Dec 31 09:30:47 UTC 2004


I've found a problem with CentOS 3 latest kernel (2.4.21-27.0.1.ELsmp)
and megaraid2 driver.

Hardware: Dell PE1600SC with CERC ATA100 RAID controller

The problem is somewhat similar, but not identical as:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=123289

After updating new glibc and kernel packages the new kernel don't boot.
Boot fails to mount root fs with "Cannot open root device" message.

I doublechecked that /etc/modules.conf is refering to megaraid2 as it
should and then recreated initrd manually, no help. Older kernel version
(2.4.21-20.0.1.ELsmp) boots just fine.

As RHEL3 U4 release notes states:

http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/release-notes/as-x86/RELEASE-NOTES-U4-x86-en.html

The megaraid2 driver has been updated from v2.10.6 to 2.10.8.2-RH1
The new driver is scsi/megaraid2.o
The older driver has been preserved as addon/megaraid_2106/megaraid_2106.o

So I decided to try megaraid_2106, changed modules.conf, recreated
initrd and... server booted with the new kernel!

Could there be a problem with the latest megaraid2 driver
(2.10.8.2-RH1)? Since I'm using CentOS and not RHEL, how/where I could
report this problem?

Best regards,

   ++Toni





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