On Tue, Mar 21, 2006 at 06:03:13AM +0000, bhanu prakash wrote:
> Hi all,
>
> I am Bhanu.I am working on kexec,kdump now.I am naive
> to this environment and have some problems related to
> kexec and kdump.
>
> I am using 2.6.15-git12-6-default kernel in suse 10.1
> linux.I had gone through the kdump.txt document about
> the steps to be followed and i am getting some
> problems when installing kdump,kexec.
>
> I followed the below steps
>
> 1) Download the upstream kexec-tools userspace
> package
> 2) Applied latest consolidated kdump patch on top of
> kexec-tools-1.101
> 3) Downloaded and built the vanilla kernel
> I downloded 2.6.16-rc6.
> 4) Set the appropriate configuration in both the
> kernels.
>
> I am not sure where to add the line
> [EMAIL PROTECTED] when booting to first kernel.
> where actually we have to add the [EMAIL PROTECTED]
> in /boot/grub/menu.lst.
"[EMAIL PROTECTED]" is a boot param for 1st kernel and it can be added
to the /boot/grub/menu.lst like below
--------
title test
kernel (hd0,0)/boot/t root=/dev/sda1 vga=0x314 selinux=0 console=tty0
console=ttyS0,38400 resume=/dev/sda2 elevator=cfq showopts [EMAIL PROTECTED]
---------
>
> If we can pass this as command line argument to
> /sbin/reboot, can u help me with the syntax as I am
> not sure about it.
>
not sure about the /sbin/reboot command, but while rebooting
using grub menu options one can edit and add the "[EMAIL PROTECTED]" boot
option to the selected kernel.
> I tried with adding [EMAIL PROTECTED] in the
> menu.lst file and rebooted the sytem. I executed kexec
> -p <vmlinux image of second kernel>
>
> It gave invalid "-p" option error.
>
As per Documentation/kdump/kdump.txt, for kdump (kexec on panic) the right
syntax is some thing like this
---------
kexec -p <second-kernel> --args-linux --elf32-core-headers
--append="root=<root-dev> init 1 irqpoll maxcpus=1"
----------
> I tried with kexec -l <vmlinux image of second kernel>
> image it resulted with the following error.
>
For normal kexec, the proper syntax is
kexec -l <second-kernel> --append="root=<root-dev>"
where <second-kernel> is a bzImage, but if a uncompressed (vmlinux) image
is used then specify --args-linux
kexec -l <second-kernel> --args-linux --append="root=<root-dev>"
>
> kexec_load failed: Bad address
> entry = (nil)
> nr_segments = 4
> segment[0].buf = (nil)
> segment[0].bufsz = 158
> segment[0].mem = (nil)
> segment[0].memsz = 158
> segment[1].buf = 0xb7c00008
> segment[1].bufsz = 1b23e8
> segment[1].mem = 0x1000000
> segment[1].memsz = 1b23e8
> segment[2].buf = 0xb7bb2008
> segment[2].bufsz = 4dc24
> segment[2].mem = 0x11b3000
> segment[2].memsz = 4dc24
> segment[3].buf = 0xb7b82008
> segment[3].bufsz = 2f086
> segment[3].mem = 0x1202000
> segment[3].memsz = 7fd54
>
> I am not able to find kdump file in etc/sysconfig
> directory.
>
No idea, I am not sure if kernel-kdump-xxx.rpm and kexec-tools rpms are
packaged with SuSE 10.1 or not.
thanks
Maneesh
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