1config NILFS2_FS
   2        tristate "NILFS2 file system support (EXPERIMENTAL)"
   3        depends on EXPERIMENTAL
   4        select CRC32
   5        help
   6          NILFS2 is a log-structured file system (LFS) supporting continuous
   7          snapshotting.  In addition to versioning capability of the entire
   8          file system, users can even restore files mistakenly overwritten or
   9          destroyed just a few seconds ago.  Since this file system can keep
  10          consistency like conventional LFS, it achieves quick recovery after
  11          system crashes.
  13          NILFS2 creates a number of checkpoints every few seconds or per
  14          synchronous write basis (unless there is no change).  Users can
  15          select significant versions among continuously created checkpoints,
  16          and can change them into snapshots which will be preserved for long
  17          periods until they are changed back to checkpoints.  Each
  18          snapshot is mountable as a read-only file system concurrently with
  19          its writable mount, and this feature is convenient for online backup.
  21          Some features including atime, extended attributes, and POSIX ACLs,
  22          are not supported yet.
  24          To compile this file system support as a module, choose M here: the
  25          module will be called nilfs2.  If unsure, say N.
  26 kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.