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-rw-r--r--Documentation/networking/ipvs-sysctl.txt13
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/networking/ipvs-sysctl.txt b/Documentation/networking/ipvs-sysctl.txt
index 9573d0c48c6e..7a3c04729591 100644
--- a/Documentation/networking/ipvs-sysctl.txt
+++ b/Documentation/networking/ipvs-sysctl.txt
@@ -181,6 +181,19 @@ snat_reroute - BOOLEAN
always be the same as the original route so it is an optimisation
to disable snat_reroute and avoid the recalculation.
+sync_persist_mode - INTEGER
+ default 0
+
+ Controls the synchronisation of connections when using persistence
+
+ 0: All types of connections are synchronised
+ 1: Attempt to reduce the synchronisation traffic depending on
+ the connection type. For persistent services avoid synchronisation
+ for normal connections, do it only for persistence templates.
+ In such case, for TCP and SCTP it may need enabling sloppy_tcp and
+ sloppy_sctp flags on backup servers. For non-persistent services
+ such optimization is not applied, mode 0 is assumed.
+
sync_version - INTEGER
default 1