ctdb-scripts: Add early exit for redundant updateip

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>

diff --git a/ctdb/config/events.d/10.interface b/ctdb/config/events.d/10.interface
index 51abc4453ab2cae894a2aed91124d20542f76f2a..073bc851408289be38292dec94eb6bd9fa75cce0 100755 (executable)
--- a/ctdb/config/events.d/10.interface
+++ b/ctdb/config/events.d/10.interface
@@ -225,6 +225,13 @@ updateip)
        get_iface_ip_maskbits "$_oiface" "$_ip" "$_maskbits"
        oiface="$iface"
 
+       # Could check maskbits too.  However, that should never change
+       # so we want to notice if it does.
+       if [ "$oiface" = "$niface" ] ; then
+               echo "Redundant \"updateip\" - ${ip} already on ${niface}"
+               exit 0
+       fi
+
        ip_block "$ip" "$oiface"
 
        delete_ip_from_iface "$oiface" "$ip" "$maskbits" 2>/dev/null