Add test case when dm table fail

Add a second disk. The system should boot the second disk if creating a
dm device fails

dm-cmd-test.sh

@@ -308,6 +308,36 @@ create_verity()
 	sudo losetup -d "$LOOP_DEV"
 }
 
+# Create a simple rootfs - not device mapped
+create_simple-hd()
+{
+	# Create 1g disk
+	DISK=$1
+	PREFIX=$2
+	if [ -f "$DISK" ] ; then
+		echo "$DISK already exist, not creating it"
+		return
+	else
+		echo "creating $DISK"
+	fi
+
+	dd if=/dev/zero of="$DISK" bs=512M count=2
+
+	# Create linear device
+	LOOP_DEV=$(sudo losetup -fP --show "$DISK")
+
+	# Format
+	sudo mkfs.ext4 -L ROOT-LINEAR "$LOOP_DEV"
+	mkdir -p dm-mount
+	sudo mount "$LOOP_DEV" dm-mount
+
+	fill_rootfs  "simple-hd disk $DISK"
+
+	# Umount disk/dm/loopback
+	sudo umount dm-mount
+	rm -r dm-mount
+}
+
 # Create a simple rootfs - target linear from 4 joined partitions
 create_linear()
 {
@@ -598,6 +628,12 @@ verity_tests()
 	/dev/dm-4 \
 	"dm-verity,,4,ro,0 $DV1_sectors verity $DV1_hash_type 8:1 8:2 $DV1_data_block_size $DV1_hash_block_size $DV1_data_blocks 1 $DV1_hash_algorithm $DV1_root_hash $DV1_salt"
 
+	launch_test \
+	"verity: table fail" \
+	"-hda ${DV1} -hdb ${DHD1}" \
+	/dev/sdb \
+	"dm-verity,,4,ro,0 $DV1_sectors verity payload=ROOT_DEV hashtree=HASH_DEV hashstart=$DV1_sectors alg=$DV1_hash_algorithm root_hexdigest=$DV1_root_hash salt=$DV1_salt"
+
 	UUID=CRYPT-VERITY-543c115f6fb048e2bd7ecbb5960aae4d-verity-test
 	launch_test \
 	"verity: with uuid" \
@@ -869,6 +905,9 @@ create_4part $D4P D4P_ 4part
 # Load disk info
 source ${D4P}.info
 
+DHD1=disk-simple-hd-1.img
+create_simple-hd $DHD1
+
 verity_tests
 linear_parser_tests
 striped_tests