Kernel panic - (RedHat - migrating from RHEL 3.0 ... 2.4 kernel to RH4.0 2.6 kernel....

[Rick Stevens]

On Sat, 2006-02-04 at 09:25 -0800, Murali Vallath wrote:
> the current state..
> 
> Did and Upgrade from 2.4 to 2.6 kernel RHEL4.0 version 2.6.9-5 EL
> kernel image.. at which time I had no issues.. it booted fine. 
> 
> subsequently I wanted to get to the latest kernel.. so did a upgrade
> to 2.6.9-22.el using CDs
> now I am stuck..

Upgraded via CD?  Huh?  You did a

	rpm -ivh /media/cdrom/RedHat/RPMS/kernelsomething

Did you rebuild the initrd image?  You have to do that if you have
/ on an ext3 filesystem.  Boot off the old image, then:

	# cd /boot
	# mkinitrd -f -v initrd-2.6.9-22.EL.img 2.6.9-22.EL

Then try the boot again.
> 
> ........ error on boot....
> Mounting root filesystem
> mount: error 6 mounting ext3

Line above is a dead giveaway you don't have the ext3 module in your
initrd image.

> mount: error 2 mounting none
> Switching to new root
> switchroot: mount failed: 22
> umount /initrd/dev failed: 2
> kernel panic - not syncing: Attempted to kill init!
> .........................
> my grub.conf file looks like this...
> 
> #boot=/dev/sda
> default=0
> timeout=10
> splashimage=(hd0,0)/boot/grub/splash.xpm.gz
> title Red Hat Enterprise Linux AS (2.6.9-22.EL)
> root (hd0,0)
> kernel /boot/vmlinux-2.6.9-22.EL ro root=/dev/sda1
> initrd /boot/initrd-2.6.9-22.EL.img
> 
> ............................................
> 
> based on a search on google.. I added the /dev/sda1 to the root
> assuming it was a LABEL issue.
> however I am having no luck.
> 
> My knowledge of Linux is very bad when it comes to linking and
> compiling etc. if any of this is required please add some steps..
> 
> looking for help...
> 
> thks
> 
> 
> mv
>  
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- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
- VitalStream, Inc.                       http://www.vitalstream.com -
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-     I.R.S.: We've got what it takes to take what you've got!       -
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