DRBD

DRBD (Distributed Replicated Block Device) is a virtual block device that is distributed across two or more machines.

Installation

On a clean installation of RHEL 7 or equivalent, run updates, and ensure that you have NTP and a recent kernel installed.

From ElRepo

Get the DRBD packages from ELRepo:

rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm
yum install drbd84-utils kmod-drbd84

From Source

Install prerequisites:

yum install gcc flex make autoconf m4

Get the source from their git repository. Releases from tarballs may fail depending on which kernel version you're using.

git clone git://git.drbd.org/drbd-8.4.git
cd drbd-8.4
make
make install

The make install should have loaded the module and you can verify this:

lsmod | grep drbd

If it isn't loaded, load it using modprobe

modprobe drbd

Compile the userspace utilities:

git clone git://git.drbd.org/drbd-utils.git
cd drbd-utils
./aclocal.sh
./configure --prefix=/usr --localstatedir=/var --sysconfdir=/etc
make
make install

Note: I got errors about man pages not being found. Ugh.

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Installation

From ElRepo

From Source

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