topic Re: Kernel panic after compiling new Debian kernel on Proliant 1300 in Operating System - Linux

Kernel panic after compiling new Debian kernel on Proliant 1300

Margit — Thu, 11 Sep 2003 17:18:44 GMT

Have a Compaq Proliant server with debian woody. It works fine with the 2.4.18 kernel from Debian install CD. However I tried compile a 2.4.22 kernel from the source from kernel.org. The new kernel built and installed without problem, but everytime I tried boot with the new kernel, the system hangs with

"Kernel panic VFS:unable to mount root filesystem"

The HDD is a 20 GB IDE, root is Ext2 on hda1. I tried several options in file systems abd bock devices, without success. I attached my .config file. Maybe somebody can help me.

Re: Kernel panic after compiling new Debian kernel on Proliant 1300

Dave Falloon — Thu, 11 Sep 2003 18:24:34 GMT

I have had the same type of problems before. Twice is was carelessness when I compiled the kernel and left out ext2 support. Once it was a typo in the fstab.

You have definately compiled in ext2 so its not a problem of the kernel not understanding the fs. You are using Debian woody so I assume you are using lilo as well. What does your lilo.conf say for this line:

root= ?

Also what does your fstab say for your /dev/hda1 line?

Dave

Re: Kernel panic after compiling new Debian kernel on Proliant 1300

Dave Falloon — Thu, 11 Sep 2003 18:42:27 GMT

One more thing how did you install the new kernel?

Did you make install or did you copy the kernel image and system.map into /boot and then edit the lilo.conf by hand?

Dave

Re: Kernel panic after compiling new Debian kernel on Proliant 1300

Stuart Browne — Fri, 12 Sep 2003 07:29:34 GMT

I don't suppose you've got a copy of the old .config file you can 'make oldconfig' from to try ?

Can you still boot off the old kernel?

Re: Kernel panic after compiling new Debian kernel on Proliant 1300

Margit — Fri, 12 Sep 2003 14:41:22 GMT

The whole error message is:

VFS: cannot open root device "301" or 03:01
Please append a correct "root= " boot option
Kernel panic: VFS: Unable to mount root fs on 03:01

I tired boot lilo with the option root=/dev/hda1 but without success. The error is the very same.

My HDD has fout partions:
/dev/hda1 5 GB ext2 /
/dev/hda2 500 MB swap
/dev/hda3 15 MB Compaq diagnostics
/dev/hda4 15 GB ext3 /home

I dont know if it si relevant or not, but the phisical order of the partitions on disk is: hda3 hda1 hda2 hda4. I tried change the Compaq Diagnostic partitons number during install, without success.

lilo.conf:

lba32
boot=/dev/hda
root=/dev/hda1
install=/boot/boot-mem.b
map=/boot/map
delay=20
vga=normal
default=linux
image=/vmlinuz
????label=Linux
????read-only
image=/vmlinuz.OLD
????label=LinuxOLD
????read-only
????optional

With vmlinuz.OLD the machine boots correct, its the kernel from Debian CD. I cant boot my custom kernel.

1) First I unzipped the kernel source to /usr/src/linux
2) make menuconfig (dont have X)
3) make-kpkg -rev test.3 kernel_image
4)cd ..
5)dpkg -i kernel_image-something.deb
6)reboot
7)it hangs

It is my standard mode for compiling and installing Debian kernels, it worked for me. I have another Debian mashine (a "noname" PC with MSI motherboard, Pentium IV 2 GHz proc., 1 GB RAM, 2 60 GB Seagate Barracuda in RAID1) and compiled and installed a new kernel 4 time without any problem. The Compaq server is more difficult.

Re: Kernel panic after compiling new Debian kernel on Proliant 1300

Dave Falloon — Tue, 16 Sep 2003 14:12:19 GMT

All I can think of is maybe you need to run lilo to update any changes made to the conf.

Is it looking for an initrd image that it can't find?

Dave

Re: Kernel panic after compiling new Debian kernel on Proliant 1300

Ragu_1 — Mon, 10 Nov 2003 04:13:35 GMT

Encountered a similar scene after a kernel re-compile here. The reason was I had enabled devfs support but had not installed the devfsd daemon. If you want to boot into your newly compiled kernel try passing the option `devfs=nomount' through your boot-loader. Guessing wildly, do pardon me for that!