Yusuf Ozturk » Compiling Centos Kernel (2.6.37) for Hyper-V Support

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Compiling Centos Kernel (2.6.37) for Hyper-V Support

Posted in Linux Server, Virtual Machine Manager | 1 Comment | 10,651 views | 10/01/2011 11:48

Actually you can use Centos with Hyper-V Linux Integration Components. But if you upgrade your kernel, you should re-apply LIC again. So you can try applying new kernel with pre-compiled Hyper-V drivers. But as you know, if you apply custom kernels on Centos, your Centos will be no longer supported. So apply this with your own risk.

yum update
yum upgrade kernel
yum install rpm-build redhat-rpm-config ncurses-devel unifdef
cd /home
wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.37.tar.bz2
tar xjf linux-2.6.37.tar.bz2
ln -s linux-2.6.37 linux
cd /home/linux
make clean && make mrproper
cp /boot/config-`uname -r` ./.config
make menuconfig

In the menuconfig, you should be careful about 3 things. If not, your new kernel may give kernel panic.

1) First, always enable this feature to eliminate boot failures.

General Setup -> Enable deprecated sysfs features to support old userspace too

2) Disable paravirtualized guest support to build rpm.

Processor type and features -> Paravirtualized guest support

3) Disable Virtualization feature.

Virtualization

Also you can append a version for Hyper-V.

General setup -> Local Version – append to kernel release

You can exit from menuconfig by saving the config. After that do:

nano /home/linux/scripts/package/mkspec

And append the following lines:

echo "%post"
echo "if [ \`uname -i\` == \"x86_64\" -o \`uname -i\` == \"i386\" ]; then"
echo "  if [ -f /etc/sysconfig/kernel ]; then"
echo "    /bin/sed -i -e 's/^DEFAULTKERNEL=kernel-smp$/DEFAULTKERNEL=kernel/' /etc/sysconfig/kernel || exit \$?"
echo "  fi"
echo "fi"
echo "/sbin/new-kernel-pkg --package kernel --mkinitrd --depmod --install "$KERNELRELEASE" || exit \$?"
echo ""
 
echo "%preun"
echo "/sbin/new-kernel-pkg --rminitrd --rmmoddep --remove "$KERNELRELEASE" || exit \$?"
echo ""

After the changes, you can go with making RPM:

1 2	cd /home/linux make CONFIG_DEBUG_SECTION_MISMATCH=y binrpm-pkg 2> make-err.log \| tee make-out.log

You can find your RPMs in /usr/src/redhat directory.

Tags: hyper-v centos, hyper-v lic, hyper-v linux, hyper-v linux support, scvmm linux

Comments (1)

Thomas Mueller

March 17th, 2011
17:47:41

thank you for sharing the mkspec snippet!