Timeouts
---------
+^^^^^^^^
Timeouts in Lustre are handled by grouping connections into classes,
thus the timeout appropriate for a client connection to an OST is a
Every request message indicates a timeout value and every reply answers
with the value the service will honor. Initial connection requests
propose a value for the timeout, and subsequent requests and replies
-pass that value back and forth as part of the message header
+pass that value back and forth as part of the RPC descriptor
('pb_timeout').
Service Times
--------------
+^^^^^^^^^^^^^
Closely related to the timeouts in Lustre are the service times that
are expect and observed for each connection class. A request will
-always list the service time as 0 in the message header
+always list the service time as 0 in the RPC descriptor
('pb_service_time'). The reply lists the time the server actual to
send the reply.