[2964] updated log and error messages in case of unknown datasrc.

src/bin/xfrin/xfrin.py.in

@@ -1723,9 +1723,9 @@ class Xfrin:
         try:
             datasrc_client = clist.find(zone_name, True, False)[0]
             if datasrc_client is None: # can happen, so log it separately.
-                logger.error(XFRIN_NO_DATASRC,
+                logger.error(XFRIN_DATASRC_UNKNOWN,
                              format_zone_str(zone_name, rrclass))
-                return (1, 'no data source for transferring %s' %
+                return (1, 'data source to transfer %s to is unknown' %
                         format_zone_str(zone_name, rrclass))
             zone_soa = _get_zone_soa(datasrc_client, zone_name, rrclass)
         except isc.datasrc.Error as ex: # rare case error, convert (so logged)

src/bin/xfrin/xfrin_messages.mes

@@ -70,6 +70,17 @@ inconsistent state among different modules.  If other modules accept
 the update but xfrin produces this error, the xfrin module should
 probably be restarted.
 
+% XFRIN_DATASRC_UNKNOWN data source to transfer %1 to is unknown
+The xfrin daemon received a command that would trigger a transfer,
+but could not find a data source where the specified zone belongs.
+There can be several reasons for this error: it may be a simple
+misspelling in the xfrin or zonemgr configuration, or in the user
+supplied parameter if it is triggered by an external command (such as
+from bindctl).  Another possibility is that this is the initial transfer
+for a newly setup secondary zone.  In this case at least an initial empty zone
+must be created in one of configured data sources.  This can be done by
+the -e option of b10-loadzone.
+
 % XFRIN_EXITING exiting
 The xfrin daemon is exiting.
 
@@ -163,17 +174,6 @@ from does not match the master address in the Xfrin configuration. The notify
 is ignored. This may indicate that the configuration for the master is wrong,
 that a wrong machine is sending notifies, or that fake notifies are being sent.
 
-% XFRIN_NO_DATASRC no data source for transferring %1
-The xfrin daemon received a command that would trigger a transfer,
-but could not find a data source where the specified zone belong.
-There can be several reasons for this error: it may be a simple
-misspelling in the xfrin or zonemgr configuration, or in the user
-supplied parameter if it is triggered by an external command (such as
-from bindctl).  Another possibility is that this is the initial transfer
-for newly setup secondary zone.  In this case at least an initial empty zone
-must be created in one of configured data sources.  This can be done by
-the -e option of b10-loadzone.
-
 % XFRIN_RECEIVED_COMMAND received command: %1
 The xfrin daemon received a command on the command channel.