Index: src/drbd/drbd_nl.c
===================================================================
--- src/drbd/drbd_nl.c	(revision 15638)
+++ src/drbd/drbd_nl.c	(working copy)
@@ -164,7 +164,7 @@
 int drbd_khelper(drbd_dev *mdev, char* cmd)
 {
 	char mb[12];
-	char *argv[] = {"/sbin/drbdadm", cmd, mb, NULL };
+	char *argv[] = {usermode_helper, cmd, mb, NULL };
 	static char *envp[] = { "HOME=/",
 				"TERM=linux",
 				"PATH=/sbin:/usr/sbin:/bin:/usr/bin",
@@ -172,8 +172,10 @@
 
 	snprintf(mb,12,"minor-%d",mdev_to_minor(mdev));
 
+	INFO("helper command: %s %s\n",usermode_helper,cmd);
+
 	drbd_bcast_ev_helper(mdev,cmd);
-	return call_usermodehelper("/sbin/drbdadm",argv,envp,1);
+	return call_usermodehelper(usermode_helper,argv,envp,1);
 }
 
 drbd_disks_t drbd_try_outdate_peer(drbd_dev *mdev)
Index: src/drbd/drbd_main.c
===================================================================
--- src/drbd/drbd_main.c	(revision 15638)
+++ src/drbd/drbd_main.c	(working copy)
@@ -119,6 +119,14 @@
 module_param(trace_devs,int,0644);
 #endif
 
+
+// Module parameter for setting the user mode helper program
+// to run. Default is /sbin/drbdadm
+
+char usermode_helper[80] = "/sbin/drbdadm";
+
+module_param_string(usermode_helper, usermode_helper, sizeof(usermode_helper), 0644);
+
 // global panic flag
 volatile int drbd_did_panic = 0;
 
Index: src/drbd/drbd_int.h
===================================================================
--- src/drbd/drbd_int.h	(revision 15638)
+++ src/drbd/drbd_int.h	(working copy)
@@ -51,6 +51,8 @@
 extern int fault_devs;
 #endif
 
+extern char usermode_helper[];
+
 #include <linux/major.h>
 #ifdef DRBD_MAJOR
 # warning "FIXME. DRBD_MAJOR is now officially defined in major.h"