trackrdrd: document the log output field data_truncated

trackrdrd/README.rst

@@ -9,7 +9,7 @@ Tracking Log Reader demon
 -------------------------
 
 :Author: Geoffrey Simmons
-:Date:   2014-05-20
+:Date:   2014-09-04
 :Version: 3.0
 :Manual section: 3
 

trackrdrd/datalog.rst

@@ -20,6 +20,11 @@ Field              Description
 ``data_overflows`` How often the accumulated length of a record exceeded
                    ``maxdata``
 ------------------ ------------------------------------------------------------
+``data_truncated`` How often data from the Varnish log was truncated due to
+                   the presence of a null byte. This can happen if the data was
+                   already truncated in the log, due to exceeding
+                   ``shm_reclen``.
+------------------ ------------------------------------------------------------
 ``done``           Current number of records in state "done"
 ------------------ ------------------------------------------------------------
 ``open``           Current number of open records in the table