Building DRBD v9 kernel module

tested on ubuntu/focal and slack150

Warning

DRBD kernel module won’t build on any kernel version. Carefully read latest ChangeLog updates from the latest release and check for supported kernel version. Otherwise you will face loads of troubles.

Beside that, use kernel.org longterm, not stable.

The building system offers an online Coccinelle patching system –or– you can otherwise have it locally.

Requirements

you need the kernel source

uname -r
ls -lF /lib/modules/`uname -r`/build
#ls -lF /lib/modules/`uname -r`/source

ubuntu

apt install build-essential automake

slackware

in case you don’t have the D K L sets installed

slackpkg install gc libffi libmpc automake
# kernel-source

Build & deploy

grab the latest release from LINBIT directly, as the github release tags are usually not up-to-date.

ver=9.2.12

wget https://pkg.linbit.com//downloads/drbd/9/drbd-$ver.tar.gz
tar xzf drbd-$ver.tar.gz
cd drbd-$ver/drbd/

now build the DRBD v9 kernel module

#make distclean
#make clean

#export MAKEFLAGS=-j4
echo $MAKEFLAGS

time make > ../../drbd-$ver.log && echo BUILT
make install >/dev/null && echo DEPLOYED
depmod -a

#ver=5.15.27
#make KVER=$ver KDIR=/usr/src/linux-$ver > ../../drbd.log && echo BUILT
#make install KVER=$ver KDIR=/usr/src/linux-$ver >/dev/null && echo DEPLOYED
#depmod -a $ver

ls -lF /lib/modules/`uname -r`/updates/
find /lib/modules/`uname -r`/ -type f | grep drbd | xargs ls -lhF

modinfo /lib/modules/`uname -r`/updates/drbd.ko
modinfo /lib/modules/`uname -r`/updates/drbd_transport_tcp.ko

Troubleshooting

See drbd-source-troubles. In a nutshell, use kernel.og longterm, not stable.

Resources