For everyone who's running GlusterFS over Samba, this might be an interesting thing to know:
André Bauer put an Ubuntu PPA repository of Samba VFS for Gluster v3.7 online:
https://launchpad.net/~monotek/+archive ... sterfs-3.7
The build so far are vor Trusty (14.04) and Vivid (15.04). No luck for Precise (12.04) LTS users.
Haven't had the time to check it out, but will very likely use it in the near future.
Thanks André!