Index: head/sbin/geom/class/mirror/geom_mirror.c
===================================================================
--- head/sbin/geom/class/mirror/geom_mirror.c	(revision 259824)
+++ head/sbin/geom/class/mirror/geom_mirror.c	(working copy)
@@ -82,6 +82,13 @@ struct g_command class_commands[] = {
 	{ "deactivate", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
 	    "[-v] name prov ..."
 	},
+	{ "destroy", G_FLAG_VERBOSE, NULL,
+	    {
+		{ 'f', "force", NULL, G_TYPE_BOOL },
+		G_OPT_SENTINEL
+	    },
+	    "[-fv] name ..."
+	},
 	{ "dump", 0, mirror_main, G_NULL_OPTS,
 	    "prov ..."
 	},
Index: head/sbin/geom/class/mirror/gmirror.8
===================================================================
--- head/sbin/geom/class/mirror/gmirror.8	(revision 259824)
+++ head/sbin/geom/class/mirror/gmirror.8	(working copy)
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 20, 2013
+.Dd December 24, 2013
 .Dt GMIRROR 8
 .Os
 .Sh NAME
@@ -86,6 +86,10 @@
 .Ar name
 .Ar prov ...
 .Nm
+.Cm destroy
+.Op Fl fv
+.Ar name ...
+.Nm
 .Cm forget
 .Op Fl v
 .Ar name ...
@@ -227,6 +231,14 @@ Activate the given component(s), which were marked
 .It Cm deactivate
 Mark the given component(s) as inactive, so it will not be automatically
 connected to the mirror.
+.It Cm destroy
+Stop the given mirror and clear metadata on all its components.
+.Pp
+Additional options include:
+.Bl -tag -width ".Fl f"
+.It Fl f
+Stop the given mirror even if it is opened.
+.El
 .It Cm forget
 Forget about components which are not connected.
 This command is useful when a disk has failed and cannot be reconnected, preventing the
Index: head/sys/geom/mirror/g_mirror.c
===================================================================
--- head/sys/geom/mirror/g_mirror.c	(revision 259824)
+++ head/sys/geom/mirror/g_mirror.c	(working copy)
@@ -642,7 +642,8 @@ g_mirror_write_metadata(struct g_mirror_disk *disk
 	length = cp->provider->sectorsize;
 	offset = cp->provider->mediasize - length;
 	sector = malloc((size_t)length, M_MIRROR, M_WAITOK | M_ZERO);
-	if (md != NULL) {
+	if (md != NULL &&
+	    (sc->sc_flags & G_MIRROR_DEVICE_FLAG_WIPE) == 0) {
 		/*
 		 * Handle the case, when the size of parent provider reduced.
 		 */
@@ -749,7 +750,8 @@ g_mirror_update_metadata(struct g_mirror_disk *dis
 	sc = disk->d_softc;
 	sx_assert(&sc->sc_lock, SX_LOCKED);
 
-	g_mirror_fill_metadata(sc, disk, &md);
+	if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_WIPE) == 0)
+		g_mirror_fill_metadata(sc, disk, &md);
 	error = g_mirror_write_metadata(disk, &md);
 	if (error == 0) {
 		G_MIRROR_DEBUG(2, "Metadata on %s updated.",
Index: head/sys/geom/mirror/g_mirror.h
===================================================================
--- head/sys/geom/mirror/g_mirror.h	(revision 259824)
+++ head/sys/geom/mirror/g_mirror.h	(working copy)
@@ -160,6 +160,7 @@ struct g_mirror_event {
 #define	G_MIRROR_DEVICE_FLAG_WAIT	0x0200000000000000ULL
 #define	G_MIRROR_DEVICE_FLAG_DESTROYING	0x0400000000000000ULL
 #define	G_MIRROR_DEVICE_FLAG_TASTING	0x0800000000000000ULL
+#define	G_MIRROR_DEVICE_FLAG_WIPE	0x1000000000000000ULL
 
 #define	G_MIRROR_DEVICE_STATE_STARTING		0
 #define	G_MIRROR_DEVICE_STATE_RUNNING		1
Index: head/sys/geom/mirror/g_mirror_ctl.c
===================================================================
--- head/sys/geom/mirror/g_mirror_ctl.c	(revision 259824)
+++ head/sys/geom/mirror/g_mirror_ctl.c	(working copy)
@@ -797,7 +797,7 @@ g_mirror_ctl_forget(struct gctl_req *req, struct g
 }
 
 static void
-g_mirror_ctl_stop(struct gctl_req *req, struct g_class *mp)
+g_mirror_ctl_stop(struct gctl_req *req, struct g_class *mp, int wipe)
 {
 	struct g_mirror_softc *sc;
 	int *force, *nargs, error;
@@ -838,10 +838,14 @@ static void
 			return;
 		}
 		g_cancel_event(sc);
+		if (wipe)
+			sc->sc_flags |= G_MIRROR_DEVICE_FLAG_WIPE;
 		error = g_mirror_destroy(sc, how);
 		if (error != 0) {
 			gctl_error(req, "Cannot destroy device %s (error=%d).",
 			    sc->sc_geom->name, error);
+			if (wipe)
+				sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_WIPE;
 			sx_xunlock(&sc->sc_lock);
 			return;
 		}
@@ -882,7 +886,9 @@ g_mirror_config(struct gctl_req *req, struct g_cla
 	else if (strcmp(verb, "forget") == 0)
 		g_mirror_ctl_forget(req, mp);
 	else if (strcmp(verb, "stop") == 0)
-		g_mirror_ctl_stop(req, mp);
+		g_mirror_ctl_stop(req, mp, 0);
+	else if (strcmp(verb, "destroy") == 0)
+		g_mirror_ctl_stop(req, mp, 1);
 	else
 		gctl_error(req, "Unknown verb.");
 	g_topology_lock();