diff --git a/tests/qemu-iotests/017 b/tests/qemu-iotests/017
index aba3faf..3af3cdf 100755
--- a/tests/qemu-iotests/017
+++ b/tests/qemu-iotests/017
@@ -43,6 +43,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow qcow2 vmdk qed
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat"
 
 TEST_OFFSETS="0 4294967296"
 
diff --git a/tests/qemu-iotests/018 b/tests/qemu-iotests/018
index 15fcfe5..6f7f054 100755
--- a/tests/qemu-iotests/018
+++ b/tests/qemu-iotests/018
@@ -43,6 +43,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow qcow2 vmdk qed
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat"
 
 TEST_OFFSETS="0 4294967296"
 
diff --git a/tests/qemu-iotests/019 b/tests/qemu-iotests/019
index 5bb18d0..b43e70f 100755
--- a/tests/qemu-iotests/019
+++ b/tests/qemu-iotests/019
@@ -47,6 +47,9 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow qcow2 vmdk qed
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" \
+                     "subformat=twoGbMaxExtentFlat" \
+                     "subformat=twoGbMaxExtentSparse"
 
 TEST_OFFSETS="0 4294967296"
 CLUSTER_SIZE=65536
diff --git a/tests/qemu-iotests/020 b/tests/qemu-iotests/020
index b3c86d8..73a0429 100755
--- a/tests/qemu-iotests/020
+++ b/tests/qemu-iotests/020
@@ -45,6 +45,9 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow qcow2 vmdk qed
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" \
+                     "subformat=twoGbMaxExtentFlat" \
+                     "subformat=twoGbMaxExtentSparse"
 
 TEST_OFFSETS="0 4294967296"
 
diff --git a/tests/qemu-iotests/034 b/tests/qemu-iotests/034
index 67f1959..7349789 100755
--- a/tests/qemu-iotests/034
+++ b/tests/qemu-iotests/034
@@ -41,6 +41,9 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow qcow2 vmdk qed
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" \
+                     "subformat=twoGbMaxExtentFlat" \
+                     "subformat=twoGbMaxExtentSparse"
 
 CLUSTER_SIZE=4k
 size=128M
diff --git a/tests/qemu-iotests/037 b/tests/qemu-iotests/037
index 743bae3..e444349 100755
--- a/tests/qemu-iotests/037
+++ b/tests/qemu-iotests/037
@@ -41,6 +41,9 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow qcow2 vmdk qed
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" \
+                     "subformat=twoGbMaxExtentFlat" \
+                     "subformat=twoGbMaxExtentSparse"
 
 CLUSTER_SIZE=4k
 size=128M
diff --git a/tests/qemu-iotests/059 b/tests/qemu-iotests/059
index 6a27ac9..bc2a73e 100755
--- a/tests/qemu-iotests/059
+++ b/tests/qemu-iotests/059
@@ -42,6 +42,9 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt vmdk
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" \
+                     "subformat=twoGbMaxExtentFlat" \
+                     "subformat=twoGbMaxExtentSparse"
 
 capacity_offset=16
 granularity_offset=20
diff --git a/tests/qemu-iotests/063 b/tests/qemu-iotests/063
index 2ab8f20..77503a2 100755
--- a/tests/qemu-iotests/063
+++ b/tests/qemu-iotests/063
@@ -44,6 +44,9 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow qcow2 vmdk qed raw
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" \
+                     "subformat=twoGbMaxExtentFlat" \
+                     "subformat=twoGbMaxExtentSparse"
 
 _make_test_img 4M
 
diff --git a/tests/qemu-iotests/069 b/tests/qemu-iotests/069
index 3042803..50347d9 100755
--- a/tests/qemu-iotests/069
+++ b/tests/qemu-iotests/069
@@ -41,6 +41,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt cow qed qcow qcow2 vmdk
 _supported_proto generic
 _supported_os Linux
+_unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat"
 
 IMG_SIZE=128K
 
