[$] The NOVA filesystem

Nonvolatile memory offers the promise of fast, byte-addressable storagethat persists over power cycles. Taking advantage of that promiserequires the imposition of some sort of directory structure so that thepersistent data can be found. There are a few approaches to theimplementation of such structures, but the usual answer is to employ afilesystem, since managing access to persistent data is what filesystemswere created to do. But traditional filesystems are not a perfect match tononvolatile memory, so there is a natural interest in new filesystems thatwere designed for this media from the beginning. The recently posted NOVA filesystem is a new entry in this race.