This directory is filled dynamically with regular files, one for each
service that RS knows about, named after its label. Its contents are
still subject to (heavy) change, but currently expose the service's
endpoint and number of restarts so far.
Change-Id: Ie58c824bcb6382c8da7a714e59fee87329970b4b
- rename start_vtreefs to run_vtreefs, since the function returns upon
termination these days;
- add get_inode_slots function to retrieve the number of indexed slots;
- add support for extra per-inode data for arbitrary storage.
Change-Id: If2d365d7b478a1cecc9e20fb2b3e70c1a1cf7243
