Linux kernel panic

Hello,

Thank you for your all answers. I am using old retHat 8.0 because I
need to add realTime environment to my linux machine and rtLinux
supports only kernel 2.4.

About the data you asked:
fstab:
LABEL=/ / ext3 defaults
1 1
LABEL=/boot /boot ext3 defaults
1 2
none /dev/pts devpts gid=5,mode=620
0 0
none /proc proc defaults
0 0
none /dev/shm tmpfs defaults
0 0
/dev/sda3 swap swap defaults
0 0
/dev/cdrom /mnt/cdrom iso9660
noauto,owner,kudzu,ro 0 0
/dev/fd0 /mnt/floppy auto
noauto,owner,kudzu 0 0

df command:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda2 1652380 1422032 146412 91% /
/dev/sda1 101089 9285 86585 10% /boot
none 127692 0 127692 0% /dev/shm
/dev/cdrom 32936 32936 0 100% /mnt/cdrom

lilo.conf:
prompt
timeout=50
default=linux
boot=/dev/sda
map=/boot/map
install=/boot/boot.b
message=/boot/message
linear

image=/boot/vmlinuz-2.4.18-14
label=linux
initrd=/boot/initrd-2.4.18-14.img
read-only
append="root=LABEL=/"
image /boot/rtzImage
label = rtLinux
read-only
root=/dev/sda2

btw. this redHat is running on vmWare workstation.

Regards, mark

"mark" <mkazmierski.TakeThisOut@gmail.com> writes:

>Hello,

>I just wanted to install realTime module (rtLinux) to linux red hat 8.0
>(on vmWare). I go exactly as mentioned in intruction
>(http://www.ece.osu.edu/~cglee/ECE694Z/rtlinux/rtlinuxInstallation2005Sp.pdf
>) and everything goes fine till lilo.conf. I added the following lines:

>image /boot/rtzImage
>label = rtLinux
>read-only
>root=/dev/sda2

>where /dev/sda2 I take from the results of df command (sda2 stands for
>/ ). While executing I got:

>request_module[block-major-8]: Root fs not mounted
>VFS: Cannot open root device "802" or 08:02
>Please append a correct "root=" option
>Kernel panic: VFS: Unable to mount root fs on 08:02.

>Could you tell me how I can make it work? Thank you!

We don;t know. It is your machine
a) the correct line is
image=/boot/rtzImage
Note if you do
ls /boot
is there adctually a file called rtzImage there? Usually it is compressed.
Why is yours not?
b) is /dev/sda2 actually mounted? What does df say ( post it here)?
VFS-- what are you running on your machine? What does /etc/fstab say?


>Regards, mark

mark wrote:

> Hello,
>
> I just wanted to install realTime module (rtLinux) to linux red hat 8.0
> (on vmWare). I go exactly as mentioned in intruction
>
(http://www.ece.osu.edu/~cglee/ECE694Z/rtlinux/rtlinuxInstallation2005Sp.pdf
> ) and everything goes fine till lilo.conf. I added the following lines:
>
> image /boot/rtzImage
> label = rtLinux
> read-only
> root=/dev/sda2
>
> where /dev/sda2 I take from the results of df command (sda2 stands for
> / ). While executing I got:
>
> request_module[block-major-8]: Root fs not mounted
> VFS: Cannot open root device "802" or 08:02
> Please append a correct "root=" option
> Kernel panic: VFS: Unable to mount root fs on 08:02.
>
> Could you tell me how I can make it work? Thank you!

According to my system block-major-8:
/etc/modprobe.d/aliases:alias block-major-8-* sd_mod

In other words, it doesn't appear you've compiled the necessary drivers into
the kernel to enable it to mount the root partition. In your case the
low-level hard drive driver (sd_mod is the generic SCSI disk driver, which
is used by SATA controllers and "real" SCSI controllers).

You can either re-compile your kernel or add the driver to the initial RAM
disk image (you DID enable initrd support in your kernel right?)

HTH,

James
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