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diff --git a/tests/14imsm-r5_3d-migrate-r4_3d b/tests/14imsm-r5_3d-migrate-r4_3d
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+. tests/env-imsm-template
+
+# RAID 5 volume (3 disks) migrate to RAID 4 volume (3 disks)
+# NEGATIVE test
+
+num_disks=3
+device_list="$dev0 $dev1 $dev2"
+
+# Before: RAID 5 volume, 3 disks, 64k chunk size
+vol0_level=5
+vol0_comp_size=$((5 * 1024))
+vol0_chunk=64
+vol0_num_comps=$((num_disks - 1))
+vol0_offset=0
+
+# After: RAID 4, 3 disks, 64k chunk size
+vol0_new_level=4
+vol0_new_num_comps=$((num_disks - 1))
+vol0_new_chunk=64
+
+. tests/imsm-grow-template 1