I’ve written a good deal of documentation as well.
Try Puppet-Gluster + Vagrant for an easy way to try out GlusterFS.
I am currently working on new features and ports to different platforms. Access to machines for testing is needed! Please contact me if you can donate hardware or virtual machine time.
You might find my puppet-lsi module useful if you use GlusterFS with a server that uses hardware RAID. That code is over here:
Let me know if you have any feedback!