Red Hat Bugzilla – Bug 278521
Kernel panic on boot with 2.6.9-55.0.6.ELsmp
Last modified: 2010-07-09 12:45:21 EDT
Description of problem:
The new kernel, 2.6.9-55.0.6.ELsmp panic on boot, unable to find the root
partition on sda10.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot machine.
Panic after "Red Hat nash version 126.96.36.199 starting" beginning with "mkrootdev:
label / not found". Full output attached below.
"INIT: version 2.85 booting" then normal boot as with 2.6.9-55.0.2.ELsmp and
Machine is a Dell XPS M1210 laptop.
I'll attach a hand-typed copy of the boot messages before the panic and the
output of dmesg from the running 2.6.9-55.0.2.ELsmp kernel.
I suspect either that the newer kernel is trying and failing to use SATA drivers
and the old is using generic, or the new initrd is missing something (it's ~6k
I'll try making a new initrd and booting from it.
Created attachment 187491 [details]
messages from the kernel as it fails to boot
Created attachment 187501 [details]
dmesg output from working kernel 2.6.9-55.0.2.ELsmp
Andrew, could you boot 2.6.9-55.0.6.ELsmp and replace "quiet" with "debug" on
the boot line, and then attach the output here?
Created attachment 193651 [details]
last lines of boot with "debug" keyword
It occurs to me that another possibility is that mkrootdev is expecting the
root partition to have a low number - which it doesn't in this case; / is
/dev/sda10 and the partitions are not in disk order. It should find it based
on the e2label, but it clearly does not.
Any news on this? Identical problem happens to me on all x86 (not 64 bit)
kernels from 2.6.9-55.0.2.ELsmp and beyond. All previous (2.6.9-42.0.8.ELsmp
and earlier) boot normally.
If possible, would you please try a more recent kernel? Thank you.
Impossible, I'm afraid, the machine's long gone. I got around the bug in the end, but can't remember how, sorry.
Ok, thanks for the info, I will close this BZ, please re-open if necessary.