Repetitive lvchange -ay on already active volume would spawn multiple polling
processes.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

---
 tools/lvchange.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Index: LVM2.2.02.39/tools/lvchange.c
===================================================================
--- LVM2.2.02.39.orig/tools/lvchange.c	2008-07-06 22:30:11.000000000 +0200
+++ LVM2.2.02.39/tools/lvchange.c	2008-07-06 22:30:57.000000000 +0200
@@ -135,6 +135,8 @@ static int lvchange_availability(struct 
 		if (!deactivate_lv(cmd, lv))
 			return_0;
 	} else {
+		int was_active = lv_is_active(lv);
+
 		if (lockingfailed() && (vg_is_clustered(lv->vg))) {
 			log_verbose("Locking failed: ignoring clustered "
 				    "logical volume %s", lv->name);
@@ -158,7 +160,8 @@ static int lvchange_availability(struct 
 				return_0;
 		}
 
-		lvchange_activate_background_polling(cmd, lv);
+		if (!was_active)
+			lvchange_activate_background_polling(cmd, lv);
 	}
 
 	return 1;