----
The symbols and values above identify the operations Lustre uses in
its protocol. They are examined in detail in the
-<<lustre-operations,Lustre Operations>> section. Lustre carries out
+<<lustre-prcs,Lustre RPCs>> section. Lustre carries out
each of these operations via the exchange of a pair of messages: a
-request and a reply. The details of each message are specific to each
-operation. The <<lustre-messages,Lustre Messages>> chapter discusses
-each message and its contents.
+request and a reply.
The 'pb_status' field was already mentioned above in conjuction with
the 'pb_type' field in replies. In a request message 'pb_status' is