When preserving snapshot name, there must not be other snapshots.
The code doesn't work when they are and it can't be made to work.

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

---
 tools/lvconvert.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: LVM2.2.02.39/tools/lvconvert.c
===================================================================
--- LVM2.2.02.39.orig/tools/lvconvert.c	2008-08-04 20:42:39.000000000 +0200
+++ LVM2.2.02.39/tools/lvconvert.c	2008-08-04 20:42:45.000000000 +0200
@@ -831,6 +831,10 @@ static int lvconvert_merge(struct cmd_co
 			return 0;
 		}
 	}
+	if (origin->origin_count != 1 && lp->merge == MERGE_AS_SNAPSHOT) {
+		log_error("There must not be other snapshots when preserving snapshot name");
+		return 0;
+	}
 
 	lv_name = lv->name;