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[PLUG] Redhat 9 with 2.6 Kernel Upgrade from Source
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The following worked for me, so I tried to correctly document, and
make it available. I am able to switch between 2.4 in Redhat 9 and
2.6 which is compiled from source.
If this doesn't come through you can read online at
http://prdownloads.sourceforge.net/souptonuts/README_26.txt?download
Redhat 9 with 2.6 Kernel Upgrade from Source
Mike Chirico
Tue Feb 17 18:05:44 EST 2004
The latest version of this document can be found at:
http://prdownloads.sourceforge.net/souptonuts/README_26.txt?download
For configs ref:
http://sourceforge.net/project/showfiles.php?group_id=79320&package_id=109944
STEP 1:
Download the latest version of the kernel and any patches. This
documentation
is done with linux-2.6.3, but look for later versions.
http://www.kernel.org/pub/linux/kernel/v2.6/
Also take a look at http://www.codemonkey.org.uk/post-halloween-2.5.txt
This has some useful hints on some of the changes needed.
STEP 2:
Download the latest version of module-init-tools
[module-init-tools-3.0-pre10.tar.gz] and modutils-2.4.21-2x.src.rpm
http://www.kernel.org/pub/linux/kernel/people/rusty/modules/
STEP 3:
Install module-init-tools. This will replace depmod [/sbin/depmod] and
other tools.
tar -zxvf module-init-tools-3.0-pre10.tar.gz cd
module-init-tools-3.0-pre10 ./configure --prefix=/sbin make make
install
SKIP IF Redhat9: STEP 4: [ Only for Redhat 8.0 special cases]
Install modutils-2.4.21-23.src.rpm. You'll may get warnings about user
rusty and group rusty not existing.
rpm -i modutils-2.4.21-23.src.rpm
rpmbuild -bb /usr/src/redhat/SPECS/modutils.spec
rpm -i /usr/src/redhat/RPMS/i386/modutils-2.4.21-23.i386.rpm
STEP 5:
Install and configure the kernel. Do NOT use the /usr/src/linux area!
Reference the README. I put my files in /home/src/kernel/
gunzip linux-2.6.3.tar.gz tar -xvf linux-2.6.3.tar cd
linux-2.6.3
If you have patches install these now:
bzip2 -dc ../patch-2.6.xx.bz2 | patch -p1
STEP 6:
Copy the appropiate /usr/src/linux-2.4/configs
[kernel-2.4.20-i686.config,
kernel-2.4.20-i686-smp.config] to .config in
/home/src/kernel/linux-2.6.3
cp /usr/src/linux-2.4/configs/kernel-2.4.20-i686.config
/home/src/kernel/linux-2.6.3/.config
If you don't have the source configs, you can download them from here:
https://sourceforge.net/project/showfiles.php?group_id=79320&package_id=109944
I've also included a file config2.6-chirico which was a 2.6 version for
some
of my systems. This isn't a bad reference if you run into trouble.
STEP 7:
Assuming you copied the appropriate kernel-2.4 config to .config, run
the
following which will run through necessary questions for the 2.6 kernel.
Or,
you might want to use the config2.6-chirico...this has already been run
through make oldconfig on my system, and I've answered the necessary
questions
for a general system.
make oldconfig
STEP 8:
This is very important. Make sure you're .config has the following in
it
CONFIG_EXT3_FS=y You'll run into the following error if you leave this
=m
instead of =y:
pivotroot: pivot_root(/sysroot,/sysroot/initrd) failed
This is because Redhat 9.0 and 8.0 user the ext3 filesystem for /boot
...
STEP 9:
Edit the Makefile and add changes to the Extraversion is needed.
Patches
will
update these values as well.
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 3
EXTRAVERSION = -skim-ch6
STEP 10:
make bzImage
STEP 11:
make modules
STEP 12:
make modules_install
STEP 13:
make install
If you come across errors here, what version of "depmod" is being
picked
up in your path?
STEP 14:
mkdir /sys
STEP 15:
/etc/rc.sysinit needs to be modified. Look for the following line
action $"Mounting proc filesystem: " mount -n -t proc /proc /proc
and after this line enter the following:
action $"Mounting sysfs filesystem: " mount -n -t sysfs /sys /sys
Here's my /etc/rc.sysinit for reference:
http://prdownloads.sourceforge.net/souptonuts/rc.sysinit.txt?download
Be very careful at this step. Backup the /etc/rc.sysinit file. I didn't
need any USB support, but your configuation may need it.
Thomer [http://thomer.com/linux/migrate-to-2.6.html ] also added changes
to /etc/fstab. I did NOT have to do this. No harm in addding; you'll
just
get errors when booting that it can't be mounted twice.
STEP 16:
Check the following:
a. The new image file should be installed on boot and there should be
sym
link to it. My latest kernel is 2.6.3-skim-ch6, and I got the
"-skim-ch6"
from the values I put in the Makefile, so I see the following:
/boot
vmlinuz -> vmlinuz-2.6.3-skim-ch6
System.map -> System.map-2.6.3-skim-ch6
/boot/grub/grub.conf Should have been automatically updated from make
install and look something like the the following:
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to
this
file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,2)
# kernel /vmlinuz-version ro root=/dev/hda6
# initrd /initrd-version.img
#boot=/dev/hda
default=0
timeout=10
splashimage=(hd0,2)/grub/splash.xpm.gz
title Red Hat Linux (2.6.3-skim-ch6)
root (hd0,2)
kernel /vmlinuz-2.6.3-skim-ch6 ro root=LABEL=/
initrd /initrd-2.6.3-skim-ch6.img
References:
http://www.codemonkey.org.uk/post-halloween-2.5.txt
http://kerneltrap.org/node/view/799
http://thomer.com/linux/migrate-to-2.6.html
http://www.kernel.org/
Regards,
Mike Chirico
___________________________________________________________________________
Philadelphia Linux Users Group -- http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
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