Re: Kernel Panic + Intel SATA

From: linux-os (Dick Johnson)
Date: Wed Oct 26 2005 - 14:29:51 EST


On Wed, 26 Oct 2005, [iso-8859-1] Márcio Oliveira wrote:

> Hi there!
>
> I have a IBM ThinkPad t43 running Fedora Core Linux 4 and kernel
> 2.6.12-1.146_FC4. I recompiled the kernel (2.6.13.4 - kernel.org) and I
> am geting the following message when the computer boots:
>
> Creating root device
> mkrootdev: label / not found

This label was no good it needs to be /dev/sda6 from your fstab
You will need to put the device name in /boot/*/*.conf lilo or
grub instead on "label"

> Mounting root filesystem
> mount: error 2 mouting ext3

Error 2 == ENOENT


> Switchimg to new root
> ERROR opening /dev/console!!!!: 2
> switchroot: mount failed: 22

Error 22 = EINVAL

> Kernel Panic - not syncing to kill init!
>
> I added the fdisk command to the initrd file and the init script
> executes it every boot to check if the kernel was recognizing the SATA
> disk. All partitions are listed in the boot process and the disk is
> recognized without problems, but the kernel still not able to mount the
> root partition:
>
> scsi0: ata_piix
> ...
> ...
> Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
>
> Disk /dev/sda: 60.0 GB, 60011642880 bytes
> 255 heads, 63 sectors/track, 7296 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
> Device Boot Start End Blocks Id System
> /dev/sda1 * 1 1913 15361888+ 7 HPFS/NTFS
> Partition 1 does not end on cylinder boundary.
> /dev/sda2 6778 7296 4165560 12 Compaq diagnostics
> Partition 2 does not end on cylinder boundary.
> /dev/sda3 1914 1929 128520 83 Linux
> /dev/sda4 1930 6777 38941560 5 Extended
> /dev/sda5 1930 2843 7341673+ 8e Linux LVM
> /dev/sda6 2844 3235 3148708+ 83 Linux
> /dev/sda7 3236 6777 28451083+ b W95 FAT32
>
> Partition table entries are not in disk order
>
> I also checked the initrd file and all seems ok.
> Thinks I made:
>
> - compiled the kernel with ext3 modular support;
> - compiled the kernel with ext3 built-in support;
> - checked the modules loaded in the initrd;
> - rebuilded and customized the initrd;
> - checked if the SATA controller is recognized at boot time;
> - tested fstab with and without "LABEL" partition name.
>
> Any idea?
>
> Related Files:
>
> /etc/fstab:
>
> # This file is edited by fstab-sync - see 'man fstab-sync' for details
> /dev/sda6 / ext3
> defaults 1 1
> #LABEL=/ / ext3 defaults 1 1
> #LABEL=/boot /boot ext3 defaults 1 2
> /dev/sda3 /boot ext3 defaults 1 2
> /dev/devpts /dev/pts devpts gid=5,mode=620 0 0
> /dev/shm /dev/shm tmpfs defaults 0 0
> /dev/proc /proc proc defaults 0 0
> /dev/sys /sys sysfs defaults 0 0
> /dev/VG00/usr /usr ext3 defaults 1 2
> /dev/VG00/var /var ext3 defaults 1 2
> /dev/VG00/swap swap swap defaults 0 0
> /dev/sda7 /mnt/windows vfat user,defaults 0 0
> /dev/hdc /media/cdrecorder auto
> pamconsole,exec,noauto,managed 0 0
>
> /boot/grub/menu.lst
>
> title Fedora Core (2.6.13-4)
> root (hd0,2)
> kernel /vmlinuz-2.6.13.4-ext3 ro root=LABEL=/ hda=noprobe 1
> initrd /initrd-2.6.13.4-ext3.img
>
> *** I tested the root=LABEL=/ and root=/dev/sda6 kernel comand options.
>
> Initrd file contents:
>
> ./sbin
> ./loopfs
> ./proc
> ./init
> ./sysroot
> ./bin
> ./bin/hotplug
> ./bin/nash
> ./bin/udev
> ./bin/fdisk
> ./bin/insmod
> ./bin/udevstart
> ./bin/modprobe
> ./dev
> ./dev/tty3
> ./dev/tty4
> ./dev/tty1
> ./dev/console
> ./dev/tty2
> ./dev/null
> ./dev/ram
> ./dev/systty
> ./sys
> ./lib
> ./lib/libc.so.6
> ./lib/ld-2.3.5.so
> ./lib/scsi_mod.ko
> ./lib/ld-linux.so.2
> ./lib/sd_mod.ko
> ./lib/libc-2.3.5.so
> ./lib/dm-mod.ko
> ./lib/ata_piix.ko
> ./lib/libata.ko
> ./etc
> ./etc/udev
> ./etc/udev/udev.conf
>
> /init initrd file:
>
> #!/bin/nash
> mount -t proc /proc /proc
> setquiet
> echo Mounted /proc filesystem
> echo Mounting sysfs
> mount -t sysfs /sys /sys
> echo Creating /dev
> mount -o mode=0755 -t tmpfs /dev /dev
> mknod /dev/console c 5 1
> mknod /dev/null c 1 3
> mknod /dev/zero c 1 5
> mkdir /dev/pts
> mkdir /dev/shm
> echo Starting udev
> /sbin/udevstart
> echo -n "/sbin/hotplug" > /proc/sys/kernel/hotplug
> echo "Loading scsi_mod.ko module"
> insmod /lib/scsi_mod.ko
> echo "Loading sd_mod.ko module"
> insmod /lib/sd_mod.ko
> echo "Loading libata.ko module"
> insmod /lib/libata.ko
> echo "Loading ata_piix.ko module"
> insmod /lib/ata_piix.ko
> echo "Loading dm-mod.ko module"
> insmod /lib/dm-mod.ko
> sleep 10
> /sbin/fdisk -l
> sleep 10
> /sbin/udevstart
> echo Creating root device
> mkrootdev /dev/root
> echo Mounting root filesystem
> mount -o defaults --ro -t ext3 /dev/root /sysroot
> echo Switching to new root
> switchroot --movedev /sysroot
>
>
> -
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>

Cheers,
Dick Johnson
Penguin : Linux version 2.6.13.4 on an i686 machine (5589.55 BogoMips).
Warning : 98.36% of all statistics are fiction.

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