Gluster FS has had several upgrades and updates, recently v. 3.3 is out. I recommend if you have Ubuntu LUCID 10.04 to:
add-apt-repository ppa:semiosis/upstarted-glusterfs-3.3 sudo apt-get update sudp apt-get install glusterd
Now /etc/gluster/glusterd.vol is the default file to use.
If you have Precise or other Ubuntu, you may do:
If you want to check in the cache what you can use, do
sudo apt-cache search gluster
If there is a mismatch between GlusterFS 3.2 and 3.3, it won't work. You will get an error due to different versions.