[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: kernel panic
Re: kernel panic
Thu, 20 Mar 2003 02:55:04 +0100
Before anybody answer my first mail, please rerad this.
The bootfloppy basically is working.
When i boot a 2.4.17 kernel ( no matter if from the harddrive or from the
floppy) it comes up ok, but then freezes, after 'Mounted root (ext2) readonly'
.... only occasionally with some error reporting (see below).
The root filesystem is on ide1 (master) = (hd1,5) = hdc6, a logical partition
about 17 GB 'far' from the rim. I don't use any 'lba' option for grub.
i did some tracking...
My first idea was to pass the --no-mem-option; but that did not match....
Next idea, swap: there's a swap on each of both drives;
so the kernel has to access the a ide drive that was inactive before.
That's a difference i can imagine to my current 'fixed' LILO configuration,
that chains from ide0 to ide1.
But excluding the ide0-swap from /etc/fstab won't match, either.
No i tried to boot a 2.2.19 kernel from ide0.
That worked !
Next i copied this kernel to ide1, and voila ! there it works, too.
Also from floppy.
So it seems to be a 2.4.17 specific problem.
Here's the first lines of it's error output, that occurs not every time, so
I'm not sure if this is related to the freezing or not:
Unable to handle paging request at virtual address f604c487
printing eip: c0118e3e
[ much more stuff below, but no human language words...]
How to go on ?
1) Let it go and stay with LILO.
But after trying the grub stage2-shell i never will be satisfied with lilo
2 ) Stay with the old kernel ?
3) Try compile a more recent kernel
4) Track and find some options / tuning for grub and the kernel as well
This i would prefer, because it's the safest to know what went wrong.
Since the failure doesn't occur with LILO, the question is: what is grub
doing another way that affects the kernel between mounting the root and
What ideas do i have ?
a) Try to find out what the kernel message means.
- probably i have to mail to some kernel.org and wait some more days....not
funny. I don't know the right address where to ask, in addition :-|
b) Reading up loads of archive pages with my slow like hell dialup link :-|
c) Check something with mapping (lilo chains with 0x80 to 0x83)
d) that was all :-(
I was so hopeful that with grub i can get rid of most chainloading .....
If i the end have to chain the two mbr's as well here with grub, please let
me know, so that i don't have to run through all test i can imagine....
Would be thankful for any little help.
# -------------- Here's the menu.lst:
title Woody 2.4.17 kernel (fd0)
kernel (fd0)/boot/vmlinuz-2.4.17 root=/dev/hdc6
title Woody 2.4.17 kernel (hd1,0)
kernel (hd1,0)/vmlinuz root=/dev/hdc6
# ----------- Here the relevant etc/fstab - Partitions:
GRUB || DEVICE MOUNT TYPE OPTIONS SIZE
1,5 || /dev/hdc6 / ext2 auto,user,rw,exec,dev,suid
1,6 || /dev/hdc7 none swap sw,pri=1
1,0 || /dev/hdc1 /boot_1 ext2 auto,user,rw,exec,suid
0,2 || /dev/hda3 none swap sw,pri=2
0.1 || /dev/hda2 /boot_0 ext2 auto,user,rw,exec,suid