Using FUSE to combine file fragments into a single file.

 fusefile is a FUSE "file mount" that presents a series of fragments
 of other files as a contiguous concatenation. Technically it bind
 mounts a driver on top of the filename mountpoint to provide access
 to the given file fragments as if in a single, contiguous file. The
 fusefile mount driver offers read/write access to the fused file,
 distributing written data across the given fragments or to an overlay
 file.