--- /dev/null
+RPC 40: MDS GETSTATUS - get the status from a target
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+[[mds-getstatus-rpc]]
+
+The MDS_GETSTATUS command targets a specific MDT. If there are several,
+the client will need to send a separate message for each.
+
+.MDS_GETSTATUS (40)
+[options="header"]
+|====
+| request | reply
+| mdt_body_only | mdt_body_capa
+|====
+
+The 'mdt_body_only' request message is one that provides information
+about a specific MDT, identifying which (among several possible)
+target is being asked about.
+
+In the reply there is additional information about the MDT's
+capabilities.
+