From mboxrd@z Thu Jan  1 00:00:00 1970
From: pcaulfield@sourceware.org <pcaulfield@sourceware.org>
Date: 10 Dec 2007 16:17:07 -0000
Subject: [Cluster-devel] cluster/group/dlm_controld dlm_daemon.h member ...
Message-ID: <20071210161707.19542.qmail@sourceware.org>
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CVSROOT:	/cvs/cluster
Module name:	cluster
Changes by:	pcaulfield at sourceware.org	2007-12-10 16:17:07

Modified files:
	group/dlm_controld: dlm_daemon.h member_cman.c 

Log message:
	Add multi-path capability. Each address we get from cman is now
	passed into the DLM.
	
	It's still incumbent on cluster.conf to set the transport to sctp.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/group/dlm_controld/dlm_daemon.h.diff?cvsroot=cluster&r1=1.13&r2=1.14
http://sourceware.org/cgi-bin/cvsweb.cgi/cluster/group/dlm_controld/member_cman.c.diff?cvsroot=cluster&r1=1.8&r2=1.9

--- cluster/group/dlm_controld/dlm_daemon.h	2007/08/17 21:17:53	1.13
+++ cluster/group/dlm_controld/dlm_daemon.h	2007/12/10 16:17:06	1.14
@@ -56,6 +56,7 @@
 #define MAXCON		4
 #define MAXNAME		255
 #define MAX_NODES	256 /* should be same as MAX_GROUP_MEMBERS */
+#define MAX_NODE_ADDRESSES 4
 
 extern char *prog_name;
 extern int daemon_debug_opt;
--- cluster/group/dlm_controld/member_cman.c	2007/07/24 18:15:43	1.8
+++ cluster/group/dlm_controld/member_cman.c	2007/12/10 16:17:06	1.9
@@ -68,7 +68,10 @@
 
 static void statechange(void)
 {
-	int i, rv;
+	int i, j, rv;
+	struct cman_node_address addrs[MAX_NODE_ADDRESSES];
+	int num_addrs;
+	struct cman_node_address *addrptr = addrs;
 
 	old_node_count = cman_node_count;
 	memcpy(&old_nodes, &cman_nodes, sizeof(old_nodes));
@@ -96,14 +99,25 @@
 		if (cman_nodes[i].cn_member &&
 		    !is_old_member(cman_nodes[i].cn_nodeid)) {
 
+			rv = cman_get_node_addrs(ch, cman_nodes[i].cn_nodeid,
+						 MAX_NODE_ADDRESSES,
+						 &num_addrs, addrs);
+			if (rv < 0) {
+				log_debug("cman_get_node_addrs failed, falling back to single-homed. ");
+				num_addrs = 1;
+				addrptr = &cman_nodes[i].cn_address;
+			}
+
 			log_debug("cman: node %d added",
 				  cman_nodes[i].cn_nodeid);
 
-			add_configfs_node(cman_nodes[i].cn_nodeid,
-					  cman_nodes[i].cn_address.cna_address,
-					  cman_nodes[i].cn_address.cna_addrlen,
-					  (cman_nodes[i].cn_nodeid ==
-					   our_nodeid));
+			for (j = 0; j < num_addrs; j++) {
+				add_configfs_node(cman_nodes[i].cn_nodeid,
+						  addrptr[j].cna_address,
+						  addrptr[j].cna_addrlen,
+						  (cman_nodes[i].cn_nodeid ==
+						   our_nodeid));
+			}
 		}
 	}
 }