diff --git a/sys/geom/raid/g_raid.c b/sys/geom/raid/g_raid.c
index 19b6d9b0f6b5..87760da55221 100644
--- a/sys/geom/raid/g_raid.c
+++ b/sys/geom/raid/g_raid.c
@@ -163,6 +163,8 @@ g_raid_disk_state2str(int state)
 		return ("NONE");
 	case G_RAID_DISK_S_OFFLINE:
 		return ("OFFLINE");
+	case G_RAID_DISK_S_DISABLED:
+		return ("DISABLED");
 	case G_RAID_DISK_S_FAILED:
 		return ("FAILED");
 	case G_RAID_DISK_S_STALE_FAILED:
@@ -535,7 +537,9 @@ g_raid_report_disk_state(struct g_raid_disk *disk)
 
 	if (disk->d_consumer == NULL)
 		return;
-	if (disk->d_state == G_RAID_DISK_S_FAILED ||
+	if (disk->d_state == G_RAID_DISK_S_DISABLED) {
+		;
+	} else if (disk->d_state == G_RAID_DISK_S_FAILED ||
 	    disk->d_state == G_RAID_DISK_S_STALE_FAILED) {
 		s = G_STATE_FAILED;
 	} else {
diff --git a/sys/geom/raid/g_raid.h b/sys/geom/raid/g_raid.h
index 20b082298d1b..183edff67c2e 100644
--- a/sys/geom/raid/g_raid.h
+++ b/sys/geom/raid/g_raid.h
@@ -140,11 +140,12 @@ struct g_raid_event {
 };
 #define G_RAID_DISK_S_NONE		0x00	/* State is unknown. */
 #define G_RAID_DISK_S_OFFLINE		0x01	/* Missing disk placeholder. */
-#define G_RAID_DISK_S_FAILED		0x02	/* Failed. */
-#define G_RAID_DISK_S_STALE_FAILED	0x03	/* Old failed. */
-#define G_RAID_DISK_S_SPARE		0x04	/* Hot-spare. */
-#define G_RAID_DISK_S_STALE		0x05	/* Old disk, unused now. */
-#define G_RAID_DISK_S_ACTIVE		0x06	/* Operational. */
+#define G_RAID_DISK_S_DISABLED		0x02	/* Disabled. */
+#define G_RAID_DISK_S_FAILED		0x03	/* Failed. */
+#define G_RAID_DISK_S_STALE_FAILED	0x04	/* Old failed. */
+#define G_RAID_DISK_S_SPARE		0x05	/* Hot-spare. */
+#define G_RAID_DISK_S_STALE		0x06	/* Old disk, unused now. */
+#define G_RAID_DISK_S_ACTIVE		0x07	/* Operational. */
 
 #define G_RAID_DISK_E_DISCONNECTED	0x01
 
diff --git a/sys/geom/raid/md_intel.c b/sys/geom/raid/md_intel.c
index 12122b09bf26..ab16c7df56b4 100644
--- a/sys/geom/raid/md_intel.c
+++ b/sys/geom/raid/md_intel.c
@@ -98,6 +98,8 @@ struct intel_raid_vol {
 	uint8_t		cng_master_disk;
 	uint16_t	cache_policy;
 	uint8_t		cng_state;
+#define INTEL_SNGST_NEEDS_UPDATE	1
+#define INTEL_SNGST_MASTER_MISSING	2
 	uint8_t		cng_sub_state;
 	uint32_t	filler_0[10];
 
@@ -130,6 +132,7 @@ struct intel_raid_disk {
 #define INTEL_F_ASSIGNED	0x02
 #define INTEL_F_FAILED		0x04
 #define INTEL_F_ONLINE		0x08
+#define INTEL_F_DISABLED	0x80
 	uint32_t	owner_cfg_num;
 	uint32_t	sectors_hi;
 	uint32_t	filler[3];
@@ -187,6 +190,13 @@ struct g_raid_md_intel_perdisk {
 	struct intel_raid_disk	 pd_disk_meta;
 };
 
+struct g_raid_md_intel_pervolume {
+	int			 pv_volume_pos;
+	int			 pv_cng;
+	int			 pv_cng_man_sync;
+	int			 pv_cng_master_disk;
+};
+
 struct g_raid_md_intel_object {
 	struct g_raid_md_object	 mdio_base;
 	uint32_t		 mdio_config_id;
@@ -206,6 +216,7 @@ static g_raid_md_ctl_t g_raid_md_ctl_intel;
 static g_raid_md_write_t g_raid_md_write_intel;
 static g_raid_md_fail_disk_t g_raid_md_fail_disk_intel;
 static g_raid_md_free_disk_t g_raid_md_free_disk_intel;
+static g_raid_md_free_volume_t g_raid_md_free_volume_intel;
 static g_raid_md_free_t g_raid_md_free_intel;
 
 static kobj_method_t g_raid_md_intel_methods[] = {
@@ -216,6 +227,7 @@ static kobj_method_t g_raid_md_intel_methods[] = {
 	KOBJMETHOD(g_raid_md_write,	g_raid_md_write_intel),
 	KOBJMETHOD(g_raid_md_fail_disk,	g_raid_md_fail_disk_intel),
 	KOBJMETHOD(g_raid_md_free_disk,	g_raid_md_free_disk_intel),
+	KOBJMETHOD(g_raid_md_free_volume,	g_raid_md_free_volume_intel),
 	KOBJMETHOD(g_raid_md_free,	g_raid_md_free_intel),
 	{ 0, 0 }
 };
@@ -369,8 +381,15 @@ g_raid_md_intel_print(struct intel_raid_conf *meta)
 		printf(" ****** Volume %d ******\n", i);
 		printf(" name               %.16s\n", mvol->name);
 		printf(" total_sectors      %ju\n", mvol->total_sectors);
-		printf(" state              %u\n", mvol->state);
+		printf(" state              0x%08x\n", mvol->state);
 		printf(" reserved           %u\n", mvol->reserved);
+		printf(" migr_priority      %u\n", mvol->migr_priority);
+		printf(" num_sub_vols       %u\n", mvol->num_sub_vols);
+		printf(" tid                %u\n", mvol->tid);
+		printf(" cng_master_disk    %u\n", mvol->cng_master_disk);
+		printf(" cache_policy       %u\n", mvol->cache_policy);
+		printf(" cng_state          %u\n", mvol->cng_state);
+		printf(" cng_sub_state      %u\n", mvol->cng_sub_state);
 		printf(" curr_migr_unit     %u\n", mvol->curr_migr_unit);
 		printf(" curr_migr_unit_hi  %u\n", mvol->curr_migr_unit_hi);
 		printf(" checkpoint_id      %u\n", mvol->checkpoint_id);
@@ -699,9 +718,11 @@ static struct g_raid_volume *
 g_raid_md_intel_get_volume(struct g_raid_softc *sc, int id)
 {
 	struct g_raid_volume	*mvol;
+	struct g_raid_md_intel_pervolume *pv;
 
 	TAILQ_FOREACH(mvol, &sc->sc_volumes, v_next) {
-		if ((intptr_t)(mvol->v_md_data) == id)
+		pv = mvol->v_md_data;
+		if (pv->pv_volume_pos == id)
 			break;
 	}
 	return (mvol);
@@ -715,6 +736,7 @@ g_raid_md_intel_start_disk(struct g_raid_disk *disk)
 	struct g_raid_disk *olddisk, *tmpdisk;
 	struct g_raid_md_object *md;
 	struct g_raid_md_intel_object *mdi;
+	struct g_raid_md_intel_pervolume *pv;
 	struct g_raid_md_intel_perdisk *pd, *oldpd;
 	struct intel_raid_conf *meta;
 	struct intel_raid_vol *mvol;
@@ -732,6 +754,11 @@ g_raid_md_intel_start_disk(struct g_raid_disk *disk)
 	disk_pos = intel_meta_find_disk(meta, pd->pd_disk_meta.serial);
 	if (disk_pos < 0) {
 		G_RAID_DEBUG1(1, sc, "Unknown, probably new or stale disk");
+		/* Disabled disk is useless for us. */
+		if (pd->pd_disk_meta.flags & INTEL_F_DISABLED) {
+			g_raid_change_disk_state(disk, G_RAID_DISK_S_DISABLED);
+			return (0);
+		}
 		/* Failed stale disk is useless for us. */
 		if (pd->pd_disk_meta.flags & INTEL_F_FAILED) {
 			g_raid_change_disk_state(disk, G_RAID_DISK_S_STALE_FAILED);
@@ -826,6 +853,8 @@ g_raid_md_intel_start_disk(struct g_raid_disk *disk)
 	/* Welcome the new disk. */
 	if (resurrection)
 		g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
+	else if (meta->disk[disk_pos].flags & INTEL_F_DISABLED)
+		g_raid_change_disk_state(disk, G_RAID_DISK_S_DISABLED);
 	else if (meta->disk[disk_pos].flags & INTEL_F_FAILED)
 		g_raid_change_disk_state(disk, G_RAID_DISK_S_FAILED);
 	else if (meta->disk[disk_pos].flags & INTEL_F_SPARE)
@@ -833,8 +862,8 @@ g_raid_md_intel_start_disk(struct g_raid_disk *disk)
 	else
 		g_raid_change_disk_state(disk, G_RAID_DISK_S_ACTIVE);
 	TAILQ_FOREACH(sd, &disk->d_subdisks, sd_next) {
-		mvol = intel_get_volume(meta,
-		    (uintptr_t)(sd->sd_volume->v_md_data));
+		pv = sd->sd_volume->v_md_data;
+		mvol = intel_get_volume(meta, pv->pv_volume_pos);
 		mmap0 = intel_get_map(mvol, 0);
 		if (mvol->migr_state)
 			mmap1 = intel_get_map(mvol, 1);
@@ -845,12 +874,17 @@ g_raid_md_intel_start_disk(struct g_raid_disk *disk)
 			/* Stale disk, almost same as new. */
 			g_raid_change_subdisk_state(sd,
 			    G_RAID_SUBDISK_S_NEW);
+		} else if (meta->disk[disk_pos].flags & INTEL_F_DISABLED) {
+			/* Disabled disk, useless. */
+			g_raid_change_subdisk_state(sd,
+			    G_RAID_SUBDISK_S_NONE);
 		} else if (meta->disk[disk_pos].flags & INTEL_F_FAILED) {
 			/* Failed disk, almost useless. */
 			g_raid_change_subdisk_state(sd,
 			    G_RAID_SUBDISK_S_FAILED);
 		} else if (mvol->migr_state == 0) {
-			if (mmap0->status == INTEL_S_UNINITIALIZED) {
+			if (mmap0->status == INTEL_S_UNINITIALIZED &&
+			    (!pv->pv_cng || pv->pv_cng_master_disk != disk_pos)) {
 				/* Freshly created uninitialized volume. */
 				g_raid_change_subdisk_state(sd,
 				    G_RAID_SUBDISK_S_UNINITIALIZED);
@@ -858,7 +892,8 @@ g_raid_md_intel_start_disk(struct g_raid_disk *disk)
 				/* Freshly inserted disk. */
 				g_raid_change_subdisk_state(sd,
 				    G_RAID_SUBDISK_S_NEW);
-			} else if (mvol->dirty) {
+			} else if (mvol->dirty && (!pv->pv_cng ||
+			    pv->pv_cng_master_disk != disk_pos)) {
 				/* Dirty volume (unclean shutdown). */
 				g_raid_change_subdisk_state(sd,
 				    G_RAID_SUBDISK_S_STALE);
@@ -885,7 +920,8 @@ g_raid_md_intel_start_disk(struct g_raid_disk *disk)
 					    sd->sd_volume->v_strip_size *
 					    mmap0->total_domains;
 				}
-			} else if (mvol->dirty) {
+			} else if (mvol->dirty && (!pv->pv_cng ||
+			    pv->pv_cng_master_disk != disk_pos)) {
 				/* Dirty volume (unclean shutdown). */
 				g_raid_change_subdisk_state(sd,
 				    G_RAID_SUBDISK_S_STALE);
@@ -1014,6 +1050,7 @@ g_raid_md_intel_start(struct g_raid_softc *sc)
 {
 	struct g_raid_md_object *md;
 	struct g_raid_md_intel_object *mdi;
+	struct g_raid_md_intel_pervolume *pv;
 	struct g_raid_md_intel_perdisk *pd;
 	struct intel_raid_conf *meta;
 	struct intel_raid_vol *mvol;
@@ -1032,7 +1069,13 @@ g_raid_md_intel_start(struct g_raid_softc *sc)
 		mvol = intel_get_volume(meta, i);
 		mmap = intel_get_map(mvol, 0);
 		vol = g_raid_create_volume(sc, mvol->name, -1);
-		vol->v_md_data = (void *)(intptr_t)i;
+		pv = malloc(sizeof(*pv), M_MD_INTEL, M_WAITOK | M_ZERO);
+		pv->pv_volume_pos = i;
+		pv->pv_cng = (mvol->state & INTEL_ST_CLONE_N_GO) != 0;
+		pv->pv_cng_man_sync = (mvol->state & INTEL_ST_CLONE_MAN_SYNC) != 0;
+		if (mvol->cng_master_disk < mmap->total_disks)
+			pv->pv_cng_master_disk = mvol->cng_master_disk;
+		vol->v_md_data = pv;
 		vol->v_raid_level_qualifier = G_RAID_VOLUME_RLQ_NONE;
 		if (mmap->type == INTEL_T_RAID0)
 			vol->v_raid_level = G_RAID_VOLUME_RL_RAID0;
@@ -1450,6 +1493,7 @@ g_raid_md_ctl_intel(struct g_raid_md_object *md,
 	struct g_raid_subdisk *sd;
 	struct g_raid_disk *disk;
 	struct g_raid_md_intel_object *mdi;
+	struct g_raid_md_intel_pervolume *pv;
 	struct g_raid_md_intel_perdisk *pd;
 	struct g_consumer *cp;
 	struct g_provider *pp;
@@ -1621,7 +1665,9 @@ g_raid_md_ctl_intel(struct g_raid_md_object *md,
 		/* We have all we need, create things: volume, ... */
 		mdi->mdio_started = 1;
 		vol = g_raid_create_volume(sc, volname, -1);
-		vol->v_md_data = (void *)(intptr_t)0;
+		pv = malloc(sizeof(*pv), M_MD_INTEL, M_WAITOK | M_ZERO);
+		pv->pv_volume_pos = 0;
+		vol->v_md_data = pv;
 		vol->v_raid_level = level;
 		vol->v_raid_level_qualifier = qual;
 		vol->v_strip_size = strip;
@@ -1814,7 +1860,9 @@ g_raid_md_ctl_intel(struct g_raid_md_object *md,
 
 		/* We have all we need, create things: volume, ... */
 		vol = g_raid_create_volume(sc, volname, -1);
-		vol->v_md_data = (void *)(intptr_t)i;
+		pv = malloc(sizeof(*pv), M_MD_INTEL, M_WAITOK | M_ZERO);
+		pv->pv_volume_pos = i;
+		vol->v_md_data = pv;
 		vol->v_raid_level = level;
 		vol->v_raid_level_qualifier = qual;
 		vol->v_strip_size = strip;
@@ -2105,6 +2153,7 @@ g_raid_md_write_intel(struct g_raid_md_object *md, struct g_raid_volume *tvol,
 	struct g_raid_subdisk *sd;
 	struct g_raid_disk *disk;
 	struct g_raid_md_intel_object *mdi;
+	struct g_raid_md_intel_pervolume *pv;
 	struct g_raid_md_intel_perdisk *pd;
 	struct intel_raid_conf *meta;
 	struct intel_raid_vol *mvol;
@@ -2133,7 +2182,11 @@ g_raid_md_write_intel(struct g_raid_md_object *md, struct g_raid_volume *tvol,
 			pd->pd_disk_meta.flags =
 			    INTEL_F_ONLINE | INTEL_F_ASSIGNED;
 		} else if (disk->d_state == G_RAID_DISK_S_FAILED) {
-			pd->pd_disk_meta.flags = INTEL_F_FAILED | INTEL_F_ASSIGNED;
+			pd->pd_disk_meta.flags = INTEL_F_FAILED |
+			    INTEL_F_ASSIGNED;
+		} else if (disk->d_state == G_RAID_DISK_S_DISABLED) {
+			pd->pd_disk_meta.flags = INTEL_F_FAILED |
+			    INTEL_F_ASSIGNED | INTEL_F_DISABLED;
 		} else {
 			pd->pd_disk_meta.flags = INTEL_F_ASSIGNED;
 			if (pd->pd_disk_meta.id != 0xffffffff) {
@@ -2165,12 +2218,13 @@ g_raid_md_write_intel(struct g_raid_md_object *md, struct g_raid_volume *tvol,
 	vi = 0;
 	version = INTEL_VERSION_1000;
 	TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
+		pv = vol->v_md_data;
 		if (vol->v_stopping)
 			continue;
 		mvol = intel_get_volume(meta, vi);
 
 		/* New metadata may have different volumes order. */
-		vol->v_md_data = (void *)(intptr_t)vi;
+		pv->pv_volume_pos = vi;
 
 		for (sdi = 0; sdi < vol->v_disks_count; sdi++) {
 			sd = &vol->v_subdisks[sdi];
@@ -2192,8 +2246,8 @@ g_raid_md_write_intel(struct g_raid_md_object *md, struct g_raid_volume *tvol,
 
 		if (meta->attributes & INTEL_ATTR_2TB)
 			cv = INTEL_VERSION_1300;
-//		else if (dev->status == DEV_CLONE_N_GO)
-//			cv = INTEL_VERSION_1206;
+		else if (pv->pv_cng)
+			cv = INTEL_VERSION_1206;
 		else if (vol->v_disks_count > 4)
 			cv = INTEL_VERSION_1204;
 		else if (vol->v_raid_level == G_RAID_VOLUME_RL_RAID5)
@@ -2211,6 +2265,17 @@ g_raid_md_write_intel(struct g_raid_md_object *md, struct g_raid_volume *tvol,
 
 		strlcpy(&mvol->name[0], vol->v_name, sizeof(mvol->name));
 		mvol->total_sectors = vol->v_mediasize / sectorsize;
+		if (pv->pv_cng) {
+			mvol->state |= INTEL_ST_CLONE_N_GO;
+			if (pv->pv_cng_man_sync)
+				mvol->state |= INTEL_ST_CLONE_MAN_SYNC;
+			mvol->cng_master_disk = pv->pv_cng_master_disk;
+			if (vol->v_subdisks[pv->pv_cng_master_disk].sd_state ==
+			    G_RAID_SUBDISK_S_NONE)
+				mvol->cng_state = INTEL_SNGST_MASTER_MISSING;
+			else if (vol->v_state != G_RAID_VOLUME_S_OPTIMAL)
+				mvol->cng_state = INTEL_SNGST_NEEDS_UPDATE;
+		}
 
 		/* Check for any recovery in progress. */
 		state = G_RAID_SUBDISK_S_ACTIVE;
@@ -2402,6 +2467,18 @@ g_raid_md_free_disk_intel(struct g_raid_md_object *md,
 	return (0);
 }
 
+static int
+g_raid_md_free_volume_intel(struct g_raid_md_object *md,
+    struct g_raid_volume *vol)
+{
+	struct g_raid_md_intel_pervolume *pv;
+
+	pv = (struct g_raid_md_intel_pervolume *)vol->v_md_data;
+	free(pv, M_MD_INTEL);
+	vol->v_md_data = NULL;
+	return (0);
+}
+
 static int
 g_raid_md_free_intel(struct g_raid_md_object *md)
 {