Howtoforge posted a guide about setting up a storage server with GlusterFS on Debian 6.0

This tutorial shows how to set up a standalone storage server on Debian 6.0, using GlusterFS and SAMBA, and custom scripts and settings to make life easier. The SAMBA share will reside on a GlusterFS share which consists out of two storage nodes for high-availability.

  Setting Up A Standalone Storage Server With GlusterFS And Samba On Debian Squeeze