--- /dev/null
+RPC 251: MGS DISCONNECT - Disconnect client from an MGS
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[[mgs-disconnect-rpc]]
+
+.MGS_DISCONNECT (251)
+[options="header"]
+|====
+| request | reply
+| empty | empty
+|====
+
+N.B. The usual 'struct req_format' definition does not exist for
+MGS_DISCONNECT. It will take a more careful code review to verify that
+it also has 'empty' messages gong back and forth.
+
+The information exchanged in a DISCONNECT message is that normally
+conveyed in the RPC descriptor.