When creating a shared store, always use previx "-shared".

If the user specifies a name on a command line, it will be used to create
a snapshot in this shared store.

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

---
 lib/metadata/lv_manip.c |   16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

Index: LVM2.2.02.85/lib/metadata/lv_manip.c
===================================================================
--- LVM2.2.02.85.orig/lib/metadata/lv_manip.c	2011-05-23 15:59:04.000000000 +0200
+++ LVM2.2.02.85/lib/metadata/lv_manip.c	2011-05-23 15:59:13.000000000 +0200
@@ -62,6 +62,8 @@ struct alloc_state {
 	uint32_t allocated;	/* Total number of extents allocated so far */
 };
 
+#define SHARED_SUFFIX	"-shared"
+
 struct lv_names {
 	const char *old;
 	const char *new;
@@ -3471,6 +3473,7 @@ int lv_create_single(struct volume_group
 	uint64_t status = UINT64_C(0);
 	struct logical_volume *lv, *org = NULL;
 	int origin_active = 0;
+	const char *lv_name;
 	struct lvinfo info;
 
 	if (lp->lv_name && find_lv_in_vg(vg, lp->lv_name)) {
@@ -3655,8 +3658,17 @@ int lv_create_single(struct volume_group
 			return_0;
 	}
 
-	if (!(lv = lv_create_empty(lp->lv_name ? lp->lv_name : "lvol%d", NULL,
-				   status, lp->alloc, vg)))
+	lv_name = lp->lv_name ? lp->lv_name : "lvol%d";
+
+	if (lp->shared_store) {
+		char *name = dm_pool_alloc(cmd->mem,
+			strlen(lp->origin) + strlen(SHARED_SUFFIX) + 1);
+		strcpy(name, lp->origin);
+		strcat(name, SHARED_SUFFIX);
+		lv_name = name;
+	}
+
+	if (!(lv = lv_create_empty(lv_name, NULL, status, lp->alloc, vg)))
 		return_0;
 
 	if (lp->read_ahead != lv->read_ahead) {