RazvanM writes: "This is an attempt to visualize the relations between the Linux File Systems through the eyes of the external symbols their kernel modules use. An initial plot was presented before but this time the scope is much broader. The analysis is done on 1377 kernel modules from 2.6.0 to 2.6.29 but there is also a small dip in the BSD world. The most thorough analysis is done on Daniel Phillips's tree which contains the latest two disk-based file systems for Linux: tux3 and btrfs. The main techniques used to established relations between file systems are hierarchical clustering and phylogenetic trees. Some other things that are presented include a set of rankings based on various properties related to the evolution of the external symbols from one release to another and complete timelines of the kernel releases for Linux, FreeBSD, NetBSD and OpenBSD. In total there are 78 figures and 10 animations. Happy viewing and commenting!"