thanks for this guide. On my Hardy servers, I also had to add the “flex” package for drbd to compile: “apt-get install flex”.

Also, the compiled module was put into /lib/modules/2.6.24.3/kernel/drivers/block. I had to manually copy it to the correct location, which in my case was /lib/modules/2.6.24-17-server/ubuntu/block/drbd.

An apt-get install flex of course did the trick, but figured that if anyone else hits that problem and can’t figure out why, there’s the solution. =)

Also, good find on flex missing! I’ve updated the procedure to include flex.

Thank you!

cat /proc/drbd

gave a GIT-hash string which indicated a different version (8.0.11 I think). Although this seemed to communicate OK with a 8.2.5 module on an openSUSE I wanted to make sure the drbd module on Ubuntu was the same version.

Just one slight correction to make. Shouldn’t

cp /boot/config-2.6.24-16-server /usr/src/linux-source-2.6.24

be

cp /boot/config-2.6.24-16-server /usr/src/linux-source-2.6.24/.config

?

When I tried it, make menuconfig complained that .config couldn’t be found

drbd 8.2.5 will build and install without having to compile the kernel:

download drbd-8.2.5.tar.gz into /tmp then:

apt-get install build-essential linux-kernel-devel \
    linux-headers-2.6.24-16 linux-headers-2.6.24-16-server
cd /usr/src
ln -s linux-headers-2.6.24-16-server linux
tar xzvf /tmp/drbd-8.2.5.tar.gz
cd /usr/src/linux
make mrporper
cd /usr/src/drbd-8.2.5
make clean all
make install

Then, as kbe mentioned:

copy  /lib/modules/2.6.24-16-server/kernel/drivers/block/drbd.ko \
     to /lib/modules/2.6.24-16-server/ubuntu/block/drbd/drbd.ko

But, I would like to try your method someday and see if I had maybe missed a step before.

Thanks!

you just need to install the drbd-utils from repository and load the drbd module in /etc/modules.conf. the drbd modules is included in the ubuntu kernel since 8.04.

see http://ubuntuforums.org/archive/index.php/t-766171.html

Regards

Jens

http://packages.ubuntu.com/hardy/drbd8-utils

When I was running Ubuntu 7.10, I tried using the 8.0.3 version it shipped with and had several issues. After talking one of the guys who wrote DRBD, he highly recommended using the latest version.

The latest version at the time I wrote this article was 8.2.5 (8.2.6 is now out!). There has been several bug fixes and improvements between 8.0.11 and 8.2.5.

Here’s what I did:

Download latest drbd source from debian here – http://packages.debian.org/experimental/drbd8-source

build drbd source pacakge. install drbd source package. build module using module-assistant. install debian package that m-a created.

However – m-a created the module /lib/modules/2.6.24-19-server/kernel/extra/drbd.ko and ubuntu has the module /lib/modules/2.6.24-19-server/ubuntu/block/drbd/drbd.ko. Whenver I do modprobe drbd the Ubuntu version is installed. I need the latest version to properly upgrade drbd0.7 to 0.8.X

For now I moved /lib/modules/2.6.24-19-server/kernel/extra/drbd.ko to /lib/modules/2.6.24-19-server/ubuntu/block/drbd/drbd.ko but that’s going to be over-written if I ever upgrade the Ubuntu modules.

Right now I’m thinking build linux-ubuntu-modules-2.6.24 with the newer source, but it seems like there should be a better way to keep these from conflicting.