[Cluster-devel] [PATCH] rgmanager: Add IP "interface" parameter

[Ryan McCabe]

On Sat, Jul 21, 2012 at 06:47:50AM +0200, Fabio M. Di Nitto wrote:
> On 07/20/2012 11:07 PM, Lon Hohberger wrote:
> > Sure; that's fine.
> > 
> > prefer_interface=""
> > 
> > maybe?  "If more than one match, use this one, otherwise, use the one
> > that matches"
> 
> Yes that sounds a lot better than force_* :)
> 
> Thanks
> Fabio

Works for me.

New patch:

This patch adds a "prefer_interface" parameter for IP resources.
The interface must already be configured and active. This
parameter should be used only when at least two active interfaces
have IP addresses on the same subnet and it's necessary to specify
which particular interface should be used.

Signed-off-by: Ryan McCabe <rmccabe at redhat.com>
---
 rgmanager/src/resources/ip.sh |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/rgmanager/src/resources/ip.sh b/rgmanager/src/resources/ip.sh
index 38d1ab9..bbd85f3 100755
--- a/rgmanager/src/resources/ip.sh
+++ b/rgmanager/src/resources/ip.sh
@@ -132,6 +132,15 @@ meta_data()
 	    <content type="boolean"/>
 	</parameter>
 
+	<parameter name="prefer_interface">
+	    <longdesc lang="en">
+	        The network interface to which the IP address should be added. The interface must already be configured and active. This parameter should be used only when at least two active interfaces have IP addresses on the same subnet and it is desired to have the IP address added to a particular interface.
+	    </longdesc>
+	    <shortdesc lang="en">
+	        Network interface
+	    </shortdesc>
+	    <content type="string"/>
+	</parameter>
     </parameters>
 
     <actions>
@@ -587,6 +596,10 @@ ipv6()
 		fi
 		
 		if [ "$1" = "add" ]; then
+			if [ -n "$OCF_RESKEY_prefer_interface" ] && \
+			   [ "$OCF_RESKEY_prefer_interface" != $dev ]; then
+				continue
+			fi
 			ipv6_same_subnet $ifaddr_exp/$maskbits $addr_exp
 			if [ $? -ne 0 ]; then
                                 continue
@@ -670,6 +683,10 @@ ipv4()
 		fi
 
 		if [ "$1" = "add" ]; then
+			if [ -n "$OCF_RESKEY_prefer_interface" ] && \
+			   [ "$OCF_RESKEY_prefer_interface" != $dev ]; then
+				continue
+			fi
 		        ipv4_same_subnet $ifaddr/$maskbits $addr
 			if [ $? -ne 0 ]; then
 			        continue
-- 
1.7.10.4