XtreemFS 1.0 is out. XtreemFS now supports read-only replication with failover, data center replica maps, parallel reads and writes, and a native Windows client, among other new features.
Download it at xtreemfs.org.
We demonstrate the XtreemFS replication and failover with an unmodified MPlayer. We play a regular movie file stored on two XtreemFS OSDs.