PXE Boot Error: "Kernel panic

veeruk101 · 07-18-2007, 02:59 PM

When using PXE boot, the OS looks like it's booting up to a certain point, but then gives the following error:

Code:

Activating logical volumes
  Volume group "VolGroup00" not found
ERROR: /bin/lvm exited abnormally! (pid 312)
Creating root device
Mounting root filesystem
mount: error 6 mounting ext3
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!

So it looks like the LVM stuff is causing the problem.

The kernel I used was the vmlinuz-2.6.9-42.0.3.EL that's located in the /boot directory of a Red Hat Enterprise Linux 4 installation. The ramdisk image I specified is the initrd-2.6.9-42.0.3.EL.img that's located in that same folder. (Because the kernel and image come from the same place and are already created, they must be compatible with each other.)

(I don't mind using another kernel/image pair, but I'd like one that's downloadable rather than me having to compile a kernel and create a ramdisk, so that I can isolate the cause of the problem to something that wasn't caused by my creation of the kernel or image.)

What could be going wrong here, and how can I fix it?

veeruk101 · 07-18-2007, 03:30 PM

By the way, my configuration file located under /tftpboot/linux-install/pxelinux.cfg/ is as follows:

Quote:

default linux
label linux
kernel vmlinuz-2.6.9-42.0.3.EL
append initrd=initrd-2.6.9-42.0.3.EL.img root=/dev/ram rw ip=dhcp

As there isn't the greatest documentation on the above file, there's a huge chance I've prepared the above configuration file incorrectly.

The boot process continues to a certain point after finding both the kernel and image file, so I believe the TFTP server has been set up correctly. The client obtains an IP address from DHCP, and downloads these files and spits out a lot of information to the console before the errors in my previous post.