design: document the revisions to the realtime rmap formats

Update the realtime rmap ondisk format documentation, since it's changed
a bit since the introduction of the metadata directory tree.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
6 files changed
tree: 69be602ea406aa9d0903de49479b6ed19cc10d1a
  1. admin/
  2. design/
  3. .gitignore
  4. CHANGES
  5. COPYING
  6. Makefile
  7. README