openvz kernel & megasr scsi on centos / rhel 5

Sudah 5 hari ini saya tidak mengerjakan pekerjaan lain kecuali 1 hal: belajar memahami linux kernel. Ini pun masih kapasitas sebagai user, bukan developer (hiks… betapa malunya).

Problem:
My hardware has a LSI MegaRAID 8208ELP (megasr) SCSI SAS controller. It shipped with RHEL 5 driver. I need to setup openVZ, unfortunately, rhel5 based openvz kernel is refusing megasr.ko to be loaded at boot time. Error message at boot was:

Loading megasr.ko module
megasr: disagrees about version of symbol struct_module
insmod: error inserting '/lib/megasr.ko': -1 Invalid module format

From what i’ve googled, they (megasr.ko and ovzkernel) have different kernel ‘version’ so they refused to work together.

Solution:

1. Download and install ovzkernel & ovzkernel-devel (use PAE if neccessary)
2. Go to lsi.com, and DON’T download the current version of the driver. Download the previous version. This is the URL: Redhat 5.x or mirrored here
3. Extract the zip file,then cd to shim/library/rhel5-32
4. do

   make -C /usr/src/kernels/2.6.18-53.el5.028stab051.1-PAE-i686 M=$PWD
   

5. copy the megasr.ko in /lib/modules/2.6.18-53.el5.028stab051.1-PAE-i686/updates

6. depmod 2.6.18-53.el5.028stab051.1-PAE-i686

7. /sbin/mkinitrd /boot/initrd-2.6.18-53.el5.028stab051.1PAE.img 2.6.18-53.el5.028stab051.1PAE

8. reboot!

NOTE: don’t copy paste, since the kernel version will always been updated

hope this help someone else, at least me

thanks for RUBEN for the correction