--- /dev/null
+Old Content
+-----------
+
+[NOTE]
+This initial list combines some actual message names or types with the
+POSIX semantic operations they are being used to implement, as well as
+a few other underlying mechanisms (cf. "grant"). A subsequent
+refinement will separate the various items and relate them to one
+another.
+
+Client-MDS RPCs for POSIX namespace operations
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+'Content to be provided'
+
+=== mount ===
+
+'Content to be provided'
+
+=== unmount ===
+
+'Content to be provided'
+
+=== create ===
+
+'Content to be provided'
+
+=== open ===
+
+'Content to be provided'
+
+=== close ===
+
+'Content to be provided'
+
+=== unlink ===
+
+'Content to be provided'
+
+=== mkdir ===
+
+image:mkdir1.png[mkdir]
+
+=== rmdir ===
+
+'Content to be provided'
+
+=== rename ===
+
+'Content to be provided'
+
+=== link ===
+
+'Content to be provided'
+
+=== symlink ===
+
+'Content to be provided'
+
+=== getattr ===
+
+'Content to be provided'
+
+=== setattr ===
+
+'Content to be provided'
+
+=== statfs ===
+
+'Content to be provided'
+
+=== ... ===
+
+'Content to be provided'
+
+
+Client-MDS RPCs for internal state management
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+'Content to be provided'
+
+=== connect ===
+
+'Content to be provided'
+
+=== disconnect ===
+
+'Content to be provided'
+
+=== FLD ===
+
+'Content to be provided'
+
+=== SEQ ===
+
+'Content to be provided'
+
+=== PING ===
+
+'Content to be provided'
+
+=== LDLM ===
+
+'Content to be provided'
+
+=== ... ===
+
+'Content to be provided'
+
+Client-OSS RPCs for IO Operations
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+'Content to be provided'
+
+=== read ===
+
+'Content to be provided'
+
+=== write ===
+
+'Content to be provided'
+
+=== truncate ===
+
+'Content to be provided'
+
+=== setattr ===
+
+'Content to be provided'
+
+=== grant ===
+
+'Content to be provided'
+
+=== ... ===
+
+'Content to be provided'
+
+MDS-OSS RPCs for internal state management
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+'Content to be provided'
+
+=== object precreation ===
+
+'Content to be provided'
+
+=== orphan recovery ===
+
+'Content to be provided'
+
+=== UID/GID change ===
+
+'Content to be provided'
+
+=== unlink ===
+
+'Content to be provided'
+
+=== ... ===
+
+'Content to be provided'
+
+MDS-OSS RPCs for quota management
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+'Content to be provided'
+
+
+MDS-OSS OUT RPCs for distributed updates
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+'Content to be provided'
+
+=== DNE1 remote directories ===
+
+'Content to be provided'
+
+=== DNE2 striped directories ===
+
+'Content to be provided'
+
+=== LFSCK2/3 verification and repair ===
+
+'Content to be provided'
+
+Message Flows
+-------------
+
+ Each file operation (in Lustre) generates a set of messages in a
+ particular sequence. There is one sequence for any particular
+ concrete operation, but under varying circumstances the same file
+ operation may generate a different sequence.
+
+State Machines
+--------------
+
+ For each File operation, the collection of possible sequences of
+ messages is governed by a state machine.