[elrepo] Kernel panic using recent kernels

[Alan Bartlett]

On 28 February 2011 18:26, Miguel Alvarez <miguellvrz9 at gmail.com> wrote:

> I just installed kernel-ml-2.6.37-1.el5.elrepo on my HP DL-380 G7 (also G6
> with same results) and when it comes up, the system kernel panics in the
> ramdisk.  Looks like there are four modules that exist in my stock
> kernel-2.6.18-194.32.1.el5 ramdisk that don't exist in 2.6.37:
>
> dm-region_hash.ko
> dm-mem-cache.ko
> dm-message.ko
> dm-raid45.ko
>
> I didn't see any new device-mapper packages in the repo so is there
> something else that I'm missing or need to update?

Hi Miguel,

I currently don't have access to my el5 system that is running
kernel-ml-2.6.35-11.el5.elrepo, so I am relying on memory. ;-)

Please boot up the current distro kernel (-194.32.1.el5, if CentOS, or
-238.1.1.el5, if RHEL) and go to the /etc/sysconfig/mkinitrd/
directory. Do you have a file name "dmraid"? If not, create one with
one line contents:

DMRAID=no

The file should be UID/GID == root, with mode == 755.

Now go to the /boot directory and re-make the initrd for the
2.6.37-1.el5.elrepo kernel. If I've remembered the details correctly,
that should solve the problem.

It might also be worthwhile adding:

nodmraid

to the kernel boot parameters. (Via the line in your /etc/grub.conf file.)

Regards,
Alan.