max-zone-size: extend documentation

06318a8c · Jan Včelák · Vitezslav Kriz · 0e6bf33b · 06318a8c
Commit 06318a8c authored Jul 13, 2016 by Jan Včelák 🚀 Committed by Vitezslav Kriz Jul 18, 2016
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@@ -1013,8 +1013,13 @@ Maximum size of the zone journal file.
 max-zone-size
 ----------------

-Maximum size of the zone, used to limit AXFR and IXFR zone trasnfer.
-Size is measured in wire format without compression.
+Maximum size of the zone. The size is measured as size of the zone records
+in wire format without compression. The limit is enforced for incoming zone
+transfers.
+
+For incremental transfers (IXFR), the effective limit for the total size of
+the records in the transfer is twice the configured value. However the final
+size of the zone must satisfy the configured value.

 *Default:* 2^64