Annoying Kernel Panic
Dake K. Odzangba
odzangba at gmail.com
Wed Sep 16 22:22:26 UTC 2009
Hi,
I'm having trouble getting rid of an annoying kernel panic.
Here's my /etc/fstab file:
> proc /proc proc defaults 0 0
> # / was on /dev/sda1 during installation
> UUID=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f / ext4 relatime,errors=remount-ro 0 1
> # swap was on /dev/sda3 during installation
> UUID=f62c5221-ead9-4db8-a357-3087d7e3de11 none swap sw 0 0
and part of my /boot/grub/menu.lst file
> title Ubuntu 9.04, kernel 2.6.28-15-generic
> uuid 81f05ad8-983d-4cbd-86d6-3466a3e8ca4f
> kernel /boot/vmlinuz-2.6.28-15-generic root=UUID=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f ro quiet splash crashkernel=384M-2G:64M at 16M,2G-:128M at 16M
> initrd /boot/initrd.img-2.6.28-15-generic
> quiet
sudo vol_id --uuid /dev/sda1 gives me
>81f05ad8-983d-4cbd-86d6-3466a3e8ca4f
I've attached a picture of my monitor when the kernel panics but basically, it says:
>ACPI: Aborted because invalid compressed format (err=1)
>RAMDISK: ran out of compressed data
>invalid compressed format (err=1)
>Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
but when I delete the
>crashkernel=384M-2G:64M at 16M,2G-:128M at 16M
and replace
>root=UUID=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f
with
>root=/dev/sda1
so that the "kernel" stanza becomes
> kernel /boot/vmlinuz-2.6.28-15-generic root=/dev/sda1 ro quiet splash
The system boots fine. I'd appreciate any insight.
Odzangba
PS: I've also attached the fstab and menu.lst files because I'm probably missing something.
-------------- next part --------------
# /etc/fstab: static file system information.
#
# Use 'vol_id --uuid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# / was on /dev/sda1 during installation
UUID=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f / ext4 relatime,errors=remount-ro 0 1
# swap was on /dev/sda3 during installation
UUID=f62c5221-ead9-4db8-a357-3087d7e3de11 none swap sw 0 0
/dev/sda2
UUID=189235d3-801d-455c-aaff-73197db28ac5 /media/silo xfs relatime 0 2
/dev/sdb1
UUID=2a07f52b-bd02-4bce-9f28-cc0bc9fa5105 /media/basket ext4 relatime 0 3
-------------- next part --------------
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
# and /usr/share/doc/grub-doc/.
## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not use 'savedefault' or your
# array will desync and will not let you boot your system.
default 0
## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 3
## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
hiddenmenu
# Pretty colours
#color cyan/blue white/blue
## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret
#
# examples
#
# title Windows 95/98/NT/2000
# root (hd0,0)
# makeactive
# chainloader +1
#
# title Linux
# root (hd0,1)
# kernel /vmlinuz root=/dev/hda2 ro
#
#
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below
## DO NOT UNCOMMENT THEM, Just edit them to your needs
## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
## kopt_2_6_8=root=/dev/hdc1 ro
## kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=UUID=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f ro
## default grub root device
## e.g. groot=(hd0,0)
# groot=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f
## should update-grub create alternative automagic boot options
## e.g. alternative=true
## alternative=false
# alternative=true
## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
## lockalternative=false
# lockalternative=false
## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=quiet splash
## should update-grub lock old automagic boot options
## e.g. lockold=false
## lockold=true
# lockold=false
## Xen hypervisor options to use with the default Xen boot option
# xenhopt=
## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0
## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
## altoptions=(recovery) single
# altoptions=(recovery mode) single
## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
## howmany=7
# howmany=all
## specify if running in Xen domU or have grub detect automatically
## update-grub will ignore non-xen kernels when running in domU and vice versa
## e.g. indomU=detect
## indomU=true
## indomU=false
# indomU=detect
## should update-grub create memtest86 boot option
## e.g. memtest86=true
## memtest86=false
# memtest86=true
## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false
## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false
## ## End Default Options ##
title Ubuntu 9.04, kernel 2.6.28-15-generic
uuid 81f05ad8-983d-4cbd-86d6-3466a3e8ca4f
kernel /boot/vmlinuz-2.6.28-15-generic root=UUID=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f ro quiet splash crashkernel=384M-2G:64M at 16M,2G-:128M at 16M
initrd /boot/initrd.img-2.6.28-15-generic
quiet
title Ubuntu 9.04, kernel 2.6.28-15-generic (recovery mode)
uuid 81f05ad8-983d-4cbd-86d6-3466a3e8ca4f
kernel /boot/vmlinuz-2.6.28-15-generic root=UUID=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f ro crashkernel=384M-2G:64M at 16M,2G-:128M at 16M single
initrd /boot/initrd.img-2.6.28-15-generic
title Ubuntu 9.04, kernel 2.6.28-11-generic
uuid 81f05ad8-983d-4cbd-86d6-3466a3e8ca4f
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f ro quiet splash crashkernel=384M-2G:64M at 16M,2G-:128M at 16M
initrd /boot/initrd.img-2.6.28-11-generic
quiet
title Ubuntu 9.04, kernel 2.6.28-11-generic (recovery mode)
uuid 81f05ad8-983d-4cbd-86d6-3466a3e8ca4f
kernel /boot/vmlinuz-2.6.28-11-generic root=UUID=81f05ad8-983d-4cbd-86d6-3466a3e8ca4f ro crashkernel=384M-2G:64M at 16M,2G-:128M at 16M single
initrd /boot/initrd.img-2.6.28-11-generic
title Ubuntu 9.04, memtest86+
uuid 81f05ad8-983d-4cbd-86d6-3466a3e8ca4f
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
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