Index: sys/geom/label/g_label.h
===================================================================
--- sys/geom/label/g_label.h
+++ sys/geom/label/g_label.h
@@ -73,6 +73,7 @@
 	g_label_taste_t	*ld_taste;
 	char		*ld_dir;
 	int		 ld_enabled;
+	bool		 ld_persistent;
 };
 
 /* Supported labels. */
Index: sys/geom/label/g_label.c
===================================================================
--- sys/geom/label/g_label.c
+++ sys/geom/label/g_label.c
@@ -192,7 +192,7 @@
 
 static struct g_geom *
 g_label_create(struct gctl_req *req, struct g_class *mp, struct g_provider *pp,
-    const char *label, const char *dir, off_t mediasize)
+    const char *label, const char *dir, off_t mediasize, bool persistent)
 {
 	struct g_geom *gp;
 	struct g_provider *pp2;
@@ -235,8 +235,18 @@
 			gctl_error(req, "Cannot create slice %s.", label);
 		return (NULL);
 	}
+
+	/*
+	 * If 'persistent' is true that means that the label can not be changed
+	 * by any access via the labelled provider itself and, thus,
+	 * we don't have to spoil the label when the provider is opened for
+	 * writing.
+	 */
+	if (persistent)
+		gp->spoiled = NULL;
+	else
+		gp->spoiled = g_label_spoiled;
 	gp->orphan = g_label_orphan;
-	gp->spoiled = g_label_spoiled;
 	gp->resize = g_label_resize;
 	g_access(cp, -1, 0, 0);
 	g_slice_config(gp, 0, G_SLICE_CONFIG_SET, (off_t)0, mediasize,
@@ -367,7 +377,7 @@
 			break;
 
 		g_label_create(NULL, mp, pp, md.md_label, G_LABEL_DIR,
-		    pp->mediasize - pp->sectorsize);
+		    pp->mediasize - pp->sectorsize, false);
 	} while (0);
 	for (i = 0; g_labels[i] != NULL; i++) {
 		char label[128];
@@ -381,7 +391,7 @@
 		if (label[0] == '\0')
 			continue;
 		g_label_create(NULL, mp, pp, label, g_labels[i]->ld_dir,
-		    pp->mediasize);
+		    pp->mediasize, g_labels[i]->ld_persistent);
 	}
 	g_access(cp, -1, 0, 0);
 end:
@@ -433,7 +443,7 @@
 		gctl_error(req, "No 'arg%d' argument", 0);
 		return;
 	}
-	g_label_create(req, mp, pp, name, G_LABEL_DIR, pp->mediasize);
+	g_label_create(req, mp, pp, name, G_LABEL_DIR, pp->mediasize, true);
 }
 
 static const char *
Index: sys/geom/label/g_label_disk_ident.c
===================================================================
--- sys/geom/label/g_label_disk_ident.c
+++ sys/geom/label/g_label_disk_ident.c
@@ -81,7 +81,8 @@
 struct g_label_desc g_label_disk_ident = {
 	.ld_taste = g_label_disk_ident_taste,
 	.ld_dir = G_LABEL_DISK_IDENT_DIR,
-	.ld_enabled = 1
+	.ld_enabled = 1,
+	.ld_persistent = true
 };
 
 G_LABEL_INIT(disk_ident, g_label_disk_ident, "Create device nodes for drives "
Index: sys/geom/label/g_label_gpt.c
===================================================================
--- sys/geom/label/g_label_gpt.c
+++ sys/geom/label/g_label_gpt.c
@@ -157,13 +157,15 @@
 struct g_label_desc g_label_gpt = {
 	.ld_taste = g_label_gpt_taste,
 	.ld_dir = G_LABEL_GPT_VOLUME_DIR,
-	.ld_enabled = 1
+	.ld_enabled = 1,
+	.ld_persistent = true
 };
 
 struct g_label_desc g_label_gpt_uuid = {
 	.ld_taste = g_label_gpt_uuid_taste,
 	.ld_dir = G_LABEL_GPT_ID_DIR,
-	.ld_enabled = 1
+	.ld_enabled = 1,
+	.ld_persistent = true
 };
 
 G_LABEL_INIT(gpt, g_label_gpt, "Create device nodes for GPT labels");