Arch with Xen-server patch

Question

Okey, here's my problem:
I want to run Arch with the Xen patch, unfortunatly the latest version if it only supports kernel 2.6.13.x.
This means that I somehow need to get udev to work with this kernel setup, my problem right now is that downgradeing udev to a version that doesn't require 2.6.15 reaks havoc over my system since it seems the initscripts are not adjusted to handle this. I tried downgradeing udev resulting in a machine that went ballistic whenever I booted it.
Does anyone have a nice, simple and good solution on how to make Archlinux run with 2.6.13, the Xen patch and a udev version that's satisfactory by todays standards and requirements?
PS. I heard a rumor about a patch that gave the 2.6.13 kernel the uevent stuff needed for running newer versions of udev, is this just a rumor or is there acctually such a patch? (And ofcourse I've googled around quite abit before I asked here) DS.

Answer 1

Hi!
I might have an answer to your problem, but not exactly what you are expecting.
- I found on xen newsgroups that as soon as the kernel 2.6.16 is available they will update their binary packages, so you can wait for this one to happen.
- I modified xen-unstable package from AUR, so it compiles Xen kernel 2.6.15 in the process and one does not have to change almost anything (one has to rename /lib/tls to improve Xen performance).
If you have time give a try to the following package (maintainer is the name of the guy who put it in AUR - don't ask him for help please). As you can see I'm building full kernel with /usr/src/ stuff so one can compile modules for Xen. I have not tested it fully, I compiled it, booted and started creating virtual machine and then went snowboarding and came back last weekend. I give absolutely no warranty that it will work it did for me though:
PKGBUILD
# $Id$
# Maintainer: Charles Mauch <[email protected]>
pkgname=xen
pkgver=unstable
pkgrel=3
pkgdesc="Enterprise Open-Source Virtualization, unstable branch"
url="http://www.xensource.com/"
depends=( 'iproute' 'bridge-utils' 'zope' 'python' 'twisted-web' )
source=(http://www.cl.cam.ac.uk/Research/SRG/netos/xen/downloads/$pkgname-$pkgver-src.tgz xend xen_Makefile.patch vsyscall-note-xen.S.patch)
install=('xen.install')
build() {
cd $startdir/src/$pkgname-$pkgver
# patch to build full xen kernel with all modules
patch < ../xen_Makefile.patch
# patch vsyscall-note-xen.S to get it working with ArchLinux
patch -p0 < ../vsyscall-note-xen.S.patch
make world
cp -a $startdir/src/$pkgname-$pkgver/dist/install/* $startdir/pkg
mv $startdir/pkg/etc/init.d $startdir/pkg/etc/rc.d
mv $startdir/pkg/usr/lib/python $startdir/pkg/usr/lib/python2.4
install -m0755 $startdir/src/xend $startdir/pkg/etc/rc.d/xend
_kernver=`find . -name linux-2.6.*-xen | sed 's|./linux-||'`
mkdir -p $startdir/pkg/usr/src/linux-${_kernver}
# copy files necessary for later builds, like nvidia and vmware
cp $startdir/src/$pkgname-$pkgver/linux-${_kernver}/Module.symvers $startdir/pkg/usr/src/linux-${_kernver}/
cp -a $startdir/src/$pkgname-$pkgver/linux-${_kernver}/scripts/ $startdir/pkg/usr/src/linux-${_kernver}/
mkdir -p $startdir/pkg/usr/src/linux-${_kernver}/.tmp_versions
mkdir -p $startdir/pkg/usr/src/linux-${_kernver}/arch/i386/kernel
cp $startdir/src/$pkgname-$pkgver/linux-${_kernver}/arch/i386/Makefile $startdir/pkg/usr/src/linux-${_kernver}/arch/i386/
cp $startdir/src/$pkgname-$pkgver/linux-${_kernver}/arch/i386/Makefile.cpu $startdir/pkg/usr/src/linux-${_kernver}/arch/i386/
cp $startdir/src/$pkgname-$pkgver/linux-${_kernver}/arch/i386/kernel/asm-offsets.s $startdir/pkg/usr/src/linux-${_kernver}/arch/i386/kernel/
# add headers for lirc package
mkdir -p $startdir/pkg/usr/src/linux-${_kernver}/drivers/media/video
cp $startdir/src/$pkgname-$pkgver/linux-${_kernver}/drivers/media/video/*.h $startdir/pkg/usr/src/linux-${_kernver}/drivers/media/video/
# add dm headers
mkdir -p $startdir/pkg/usr/src/linux-${_kernver}/drivers/md
cp $startdir/src/$pkgname-$pkgver/linux-${_kernver}/drivers/md/*.h $startdir/pkg/usr/src/linux-${_kernver}/drivers/md/
# add inotify.h
mkdir -p $startdir/pkg/usr/src/linux-${_kernver}/include/linux
cp $startdir/src/$pkgname-$pkgver/linux-${_kernver}/include/linux/inotify.h $startdir/pkg/usr/src/linux-${_kernver}/include/linux/
# copy in Kconfig files
cd $startdir/src/$pkgname-$pkgver/linux-${_kernver}/
for i in `find . -name "Kconfig*"`; do
mkdir -p $startdir/pkg/usr/src/linux-${_kernver}/`echo $i | sed 's|/Kconfig.*||'`
cp $i $startdir/pkg/usr/src/linux-${_kernver}/$i
done
cp $startdir/src/$pkgname-$pkgver/linux-${_kernver}/Makefile $startdir/pkg/usr/src/linux-${_kernver}/
cp $startdir/src/$pkgname-$pkgver/linux-${_kernver}/.config $startdir/pkg/usr/src/linux-${_kernver}/
cd $startdir/pkg/usr/src/linux-${_kernver}/include && ln -s asm-i386 asm
chown -R root.root $startdir/pkg/usr/src/linux-${_kernver}
md5sums=('b6ae36dcdc74c0810c0c0defaaddad9c'
'9c6b2a6dd88e4ca68689dd063ff51a72' '00dd41afa731a0f6a1bbc4cb90e75b02')
I created 2 patches to have usable package. The source code from the xen website builds linux-2.6-xen0 and linux-2.6-xenU which are development kernels - they have almost no modules except for the basic ones. One should build the kernel linux-2.6-xen that can work as xen0 or xenU and has all modules.
take a look here
http://wiki.xensource.com/xenwiki/Insta … 2.6-xen%29
under "Using the -xen kernel rather than -xen0/U"
xen_Makefile.patch
--- Makefile 2006-03-03 05:58:36.000000000 +0100
+++ Makefile.new 2006-03-09 09:17:01.000000000 +0100
@@ -2,7 +2,7 @@
# Grand Unified Makefile for Xen.
-KERNELS ?= linux-2.6-xen0 linux-2.6-xenU
+KERNELS ?= linux-2.6-xen
# You may use wildcards in the above e.g. KERNELS=*2.6*
XKERNELS := $(foreach kernel, $(KERNELS), $(patsubst buildconfigs/mk.%,%,$(wildcard buildconfigs/mk.$(kernel))) )
the second patch is to solve this problem:
http://lists.xensource.com/archives/htm … 00023.html
vsyscall-note-xen.S.patch
--- linux-2.6-xen-sparse/arch/i386/kernel/vsyscall-note-xen.S 2006-03-09 06:15:52.000000000 +0100
+++ linux-2.6-xen-sparse/arch/i386/kernel/vsyscall-note-xen.S.new 2006-03-09 09:47:37.000000000 +0100
@@ -27,6 +27,6 @@
.byte bit; .asciz name
#define NOTE_KERNELCAP_END ASM_ELF_NOTE_END
-NOTE_KERNELCAP_BEGIN(1, 1)
-NOTE_KERNELCAP(1, "nosegneg") /* Change 1 back to 0 when glibc is fixed! */
-NOTE_KERNELCAP_END
+#NOTE_KERNELCAP_BEGIN(1, 1)
+#NOTE_KERNELCAP(1, "nosegneg") /* Change 1 back to 0 when glibc is fixed! */
+#NOTE_KERNELCAP_END
besides of that you need 2 more files: xend and xen.install form AUR
http://aur.archlinux.org/packages.php?d … s=0&SeB=nd
waldek