diff --git a/lib/format/ataraid/sil.c.fix_sil_jbod b/lib/format/ataraid/sil.c

index 6089682..8c3df38 100644

--- a/lib/format/ataraid/sil.c.fix_sil_jbod

+++ b/lib/format/ataraid/sil.c

@@ -1,8 +1,8 @@

 /*

  * Silicon Image Medley ATARAID metadata format handler.

  *

- * Copyright (C) 2004,2005  Heinz Mauelshagen, Red Hat GmbH.

- *                          All rights reserved.

+ * Copyright (C) 2004,2005,2009  Heinz Mauelshagen, Red Hat GmbH.

+ *				 All rights reserved.

  *

  * See file LICENSE at the top of this source tree for license information.

  */

@@ -166,6 +166,16 @@ sil_valid(struct lib_context *lc, struct dev_info *di,

 	return 1;

 }

+/* Return number of array sectors. */

+static uint64_t

+array_size(struct raid_dev *rd)

+{

+	struct sil *sil = META(rd, sil);

+

+	return (((uint64_t) sil->array_sectors_high) << 32) +

+	       sil->array_sectors_low;

+}

+

 static void

 free_sils(struct sil **sils, unsigned int i)

 {

@@ -381,6 +391,10 @@ devices(struct raid_dev *rd, void *context)

 	struct sil *sil = META(rd, sil);

 	switch (sil->type) {

+	case SIL_T_JBOD:

+		ret = array_size(rd) < rd->sectors ?

+		      1 : sil->drives_per_striped_set;

+		break;

 	case SIL_T_RAID0:

 	case SIL_T_RAID10:

 		ret = sil->drives_per_striped_set;

@@ -519,12 +533,9 @@ stripes(struct sil *sil)

 static uint64_t

 sectors(struct raid_dev *rd)

 {

-	uint64_t array_sectors, ret = 0;

+	uint64_t array_sectors = array_size(rd), ret = 0;

 	struct sil *sil = META(rd, sil);

-	array_sectors = (((uint64_t) sil->array_sectors_high) << 32) +

-		sil->array_sectors_low;

-

 	switch (sil->type) {

 	case SIL_T_SPARE:

 		/* Cook them up... */