Packages of GlusterFS 3.4.7 for Debian wheezy are available here from the Gluster Community…

Add the GPG key to apt:
wget -O - | apt-key add -
Add the source:
echo deb wheezy main > /etc/apt/sources.list.d/gluster.list
Update package list:
apt-get update
apt-get install [ glusterfs-server | glusterfs-client ]
Packages from the Debian project are available in the unstable distribution: