Fsk141

How to compile 2.6.18 with newest DRBD.

It’s kinda a joke that OpenVZ just released a new RHEL5 kernel and it has DRBD 8.2.6 (meh) So I’m doing a short write up on the commands to semi-automatically build a 2.6.18 kernel with OpenVZ & DRBD 8.3.0. I’m choosing to do i686, but if you want to change it to x86_64 or remove PAE then just edit .config & download the correct OpenVZ patch.

mkdir -p /usr/src/kernels/2.6.18_vz_drbd_ibcs/src
cd /usr/src/kernels/2.6.18_vz_drbd_ibcs/src
wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.18.tar.gz
wget http://oss.linbit.com/drbd/8.3/drbd-8.3.0.tar.gz
wget http://voxel.dl.sourceforge.net/sourceforge/linux-abi/ibcs-3_7.tgz
wget http://download.openvz.org/kernel/branches/rhel5-2.6.18/028stab060.2/patches/patch-92.1.18.el5.028stab060.2-combined.gz
wget http://download.openvz.org/kernel/branches/rhel5-2.6.18/028stab060.2/configs/kernel-2.6.18-i686-PAE.config.ovz

tar xzf linux-2.6.18.tar.gz -C ..
tar xzf drbd-8.3.0.tar.gz -C ..
mkdir ../ibcs
tar xzf ibcs-3_7.tgz -C ../ibcs
cp patch-92.1.18.el5.028stab060.2-combined.gz ..
cd ..

gunzip -c patch-92.1.18.el5.028stab060.2-combined.gz | patch -p0 patch-92.1.18.el5.028stab060.2-combined.gz

cd drbd-8.3.0
make KDIR=/usr/src/kernels/2.6.18_vz_drbd_ibcs/linux-2.6.18 kernel-patch
cp patch-linux-2.6.18-drbd-8.3.0 ..
cd ..
patch -p0 < patch-linux-2.6.18-drbd-8.3.0

cd linux-2.6.18
cp ../src/kernel-2.6.18-i686-PAE.config.ovz ./.config
make menuconfig

After you run: make menuconfig, this is the one important thing that you need to change...

Device Drivers > Block devices >  <*>   DRBD Distributed Replicated Block Device support

Then build the kernel:

time make -j7 rpm

Now install, and enjoy

Make the initrd image:

mkinitrd /boot/initrd-2.6.18-PAE.img 2.6.18-prep

Add this to /boot/grub/menu.lst

title CentOS (2.6.18 OPENVZ|DRBD)
        root(hd0,0)
        kernel /vmlinuz-2.6.18-prep ro root=LABEL=/
        initrd /initrd-2.6.18-PAE.img