Archive/XCP DRBD

Introduction

DRBD provides HA for block level devices, essentially allowing the possibility of a replicated SR across multiple XCP instances.

Install

Linbit provides a full install guide here: http://www.linbit.com/fileadmin/tech-guides/xenserver-drbd.pdf

The only modification needed for XCP is the RPMs to be installed need to be those created specifically for XCP, with further directions below.

Source Build

Install the build tools

sed -i -e "s/enabled=0/enabled=1/" /etc/yum.repos.d/CentOS-Base.repo
sed -i -e "s/enabled=1/enabled=0/" /etc/yum.repos.d/Citrix.repo
yum install gcc flex rpm-build redhat-rpm-config make libxslt

Install the kernel development package from the XCP 1.5 binary packages ISO

rpm -i kernel-xen-devel-2.6.32.12-0.7.1.xs1.4.90.530.170661.i686.rpm
#might need to put this somewhere else and remote mount it via nfs
wget http://downloads.xen.org/XCP/53341/sources/binpkg.iso
mount -o loop binpkg.iso /mnt
cd /mnt/domain0/RPMS/i686
rpm -i kernel-xen-devel-2.6.32.12-0.7.1.xs1.4.90.530.170661.i686.rpm

Download and build DRBD

mkdir /drbd/
cd /drbd/
wget http://oss.linbit.com/drbd/8.4/drbd-8.4.1.tar.gz
tar zxvf drbd-8.4.1.tar.gz
cd drbd-8.4.1
./configure --prefix=/usr --localstatedir=/var --sysconfdir=/etc --with-km
make tgz
cp drbd*.tar.gz `rpm -E %_sourcedir`
rpmbuild -bb drbd.spec
rpmbuild -bb drbd-km.spec

You now have RPMs in /usr/src/redhat/RPMS/i386/drbd

Downloads

XCP 1.5 Beta

Locatrix Communications has provided a repository with the 8.4.1 RPMs pre-built for XCP 1.5 Beta: http://download.locatrix.com/drbd/

References

• http://backdrift.org/live-migration-and-synchronous-replicated-storage-with-xen-drbd-and-lvm
• http://joekane.eu/xenserver-drbd-update-4-the-guide
• http://www.drbd.org/