This is a different approach to the issue described in BZ #802436, whose patch was rejected by upstream in favor of active_slave option.

active_slave option allow forcing which slave is active. It is a good way to make sure a given interface is active upon boot or network restart.

But like the primary option, active_slave can only be applied after the bonding is configured.

This patch is a follow-up on (BZ #747418 comment #14):


From bf0dc9a9d2ec356935f5cb83e2738756b707ffe5 Mon Sep 17 00:00:00 2001
From: Marcelo Ricardo Leitner <mleitner>
Date: Thu, 14 Jun 2012 18:43:08 -0300
Subject: [PATCH] ifup-eth: allow using active_slave bonding option

active_slave can only be applied after the bonding interface
is completely configure. With this patch, we can use this option
in BONDING_OPTS to make sure a given slave is used upon interface
startup.

The primary option is not enough when using primary_reselect=2.
---
 sysconfig/network-scripts/ifup-eth |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)


diff --git a/sysconfig/network-scripts/ifup-eth b/sysconfig/network-scripts/ifup-eth
index 8c8b588..18118f5 100755
--- a/sysconfig/network-scripts/ifup-eth
+++ b/sysconfig/network-scripts/ifup-eth
@@ -133,7 +133,7 @@ if [ "$ISALIAS" = no ] && is_bonding_device ${DEVICE} ; then
            if ! grep -q ${value#+} /sys/class/net/${DEVICE}/bonding/$key; then
                 echo "$value" > /sys/class/net/${DEVICE}/bonding/$key
            fi
-       elif [ "${key}" != "primary" ]; then
+       elif [ "${key}" != "primary" -a "${key}" != "active_slave" ]; then
             echo $value > /sys/class/net/${DEVICE}/bonding/$key
         fi
     done
@@ -149,7 +149,7 @@ if [ "$ISALIAS" = no ] && is_bonding_device ${DEVICE} ; then
     for arg in $BONDING_OPTS ; do   
         key=${arg%%=*};
         value=${arg##*=};
-       if [ "${key}" = "primary" ]; then 
+       if [ "${key}" = "primary" -o "${key}" != "active_slave" ]; then 
             echo $value > /sys/class/net/${DEVICE}/bonding/$key
        fi
     done
-- 
1.7.7.6