diff --git a/tests/qemu-iotests/031 b/tests/qemu-iotests/031
index 58b57a0ef2..648112f796 100755
--- a/tests/qemu-iotests/031
+++ b/tests/qemu-iotests/031
@@ -58,21 +58,21 @@ for compat in "compat=0.10" "compat=1.1"; do
     echo
     _make_test_img -o $compat 64M
     $PYTHON qcow2.py "$TEST_IMG" add-header-ext 0x12345678 "This is a test header extension"
-    $PYTHON qcow2.py "$TEST_IMG" dump-header
+    _qcow2_dump_header
     _check_test_img
 
     echo
     echo === Rewrite header with no backing file ===
     echo
     $QEMU_IMG rebase -u -b "" "$TEST_IMG"
-    $PYTHON qcow2.py "$TEST_IMG" dump-header
+    _qcow2_dump_header
     _check_test_img
 
     echo
     echo === Add a backing file and format ===
     echo
     $QEMU_IMG rebase -u -b "/some/backing/file/path" -F host_device "$TEST_IMG"
-    $PYTHON qcow2.py "$TEST_IMG" dump-header
+    _qcow2_dump_header
 done
 
 # success, all done
diff --git a/tests/qemu-iotests/036 b/tests/qemu-iotests/036
index 5e567012a8..f703605e44 100755
--- a/tests/qemu-iotests/036
+++ b/tests/qemu-iotests/036
@@ -58,7 +58,7 @@ $PYTHON qcow2.py "$TEST_IMG" set-feature-bit incompatible 63
 
 # Without feature table
 $PYTHON qcow2.py "$TEST_IMG" del-header-ext 0x6803f857
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep features
+_qcow2_dump_header | grep features
 $PYTHON qcow2.py "$TEST_IMG" dump-header-exts
 _img_info
 
@@ -107,7 +107,7 @@ echo === Create image with unknown autoclear feature bit ===
 echo
 _make_test_img 64M
 $PYTHON qcow2.py "$TEST_IMG" set-feature-bit autoclear 63
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep features
+_qcow2_dump_header | grep features
 $PYTHON qcow2.py "$TEST_IMG" dump-header-exts
 
 echo
@@ -115,7 +115,7 @@ echo === Repair image ===
 echo
 _check_test_img -r all
 
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep features
+_qcow2_dump_header | grep features
 $PYTHON qcow2.py "$TEST_IMG" dump-header-exts
 
 # success, all done
diff --git a/tests/qemu-iotests/039 b/tests/qemu-iotests/039
index 12b2c7fa7b..8e783a8380 100755
--- a/tests/qemu-iotests/039
+++ b/tests/qemu-iotests/039
@@ -59,7 +59,7 @@ _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
 $QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 echo
@@ -73,7 +73,7 @@ $QEMU_IO -c "write -P 0x5a 0 512" \
     | _filter_qemu_io
 
 # The dirty bit must be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 echo
@@ -82,7 +82,7 @@ echo "== Read-only access must still work =="
 $QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
 
 # The dirty bit must be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "== Repairing the image file must succeed =="
@@ -90,7 +90,7 @@ echo "== Repairing the image file must succeed =="
 _check_test_img -r all
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "== Data should still be accessible after repair =="
@@ -108,12 +108,12 @@ $QEMU_IO -c "write -P 0x5a 0 512" \
     | _filter_qemu_io
 
 # The dirty bit must be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "== Creating an image file with lazy_refcounts=off =="
@@ -126,7 +126,7 @@ $QEMU_IO -c "write -P 0x5a 0 512" \
     | _filter_qemu_io
 
 # The dirty bit must not be set since lazy_refcounts=off
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 echo
@@ -141,7 +141,7 @@ $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IMG commit "$TEST_IMG"
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 $PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features
 
 _check_test_img
@@ -159,7 +159,7 @@ $QEMU_IO -c "reopen -o lazy-refcounts=on" \
     | _filter_qemu_io
 
 # The dirty bit must be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
@@ -171,7 +171,7 @@ $QEMU_IO -c "reopen -o lazy-refcounts=off" \
     | _filter_qemu_io
 
 # The dirty bit must not be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img
 
 
diff --git a/tests/qemu-iotests/060 b/tests/qemu-iotests/060
index db26c6b246..d1e3204d4e 100755
--- a/tests/qemu-iotests/060
+++ b/tests/qemu-iotests/060
@@ -80,13 +80,13 @@ poke_file "$TEST_IMG" "$l1_offset" "\x80\x00\x00\x00\x00\x03\x00\x00"
 _check_test_img
 
 # The corrupt bit should not be set anyway
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # Try to write something, thereby forcing the corrupt bit to be set
 $QEMU_IO -c "$OPEN_RW" -c "write -P 0x2a 0 512" | _filter_qemu_io
 
 # The corrupt bit must now be set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # This information should be available through qemu-img info
 _img_info --format-specific
@@ -114,19 +114,19 @@ poke_file "$TEST_IMG" "$(($rb_offset+8))" "\x00\x01"
 # Redirect new data cluster onto refcount block
 poke_file "$TEST_IMG" "$l2_offset" "\x80\x00\x00\x00\x00\x02\x00\x00"
 _check_test_img
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 $QEMU_IO -c "$OPEN_RW" -c "write -P 0x2a 0 512" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # Try to fix it
 _check_test_img -r all
 
 # The corrupt bit should be cleared
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # Look if it's really really fixed
 $QEMU_IO -c "$OPEN_RW" -c "write -P 0x2a 0 512" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "=== Testing cluster data reference into inactive L2 table ==="
@@ -139,13 +139,13 @@ $QEMU_IO -c "$OPEN_RW" -c "write -P 2 0 512" | _filter_qemu_io
 poke_file "$TEST_IMG" "$l2_offset_after_snapshot" \
                       "\x80\x00\x00\x00\x00\x04\x00\x00"
 _check_test_img
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 $QEMU_IO -c "$OPEN_RW" -c "write -P 3 0 512" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 _check_test_img -r all
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 $QEMU_IO -c "$OPEN_RW" -c "write -P 4 0 512" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 # Check data
 $QEMU_IO -c "$OPEN_RO" -c "read -P 4 0 512" | _filter_qemu_io
diff --git a/tests/qemu-iotests/061 b/tests/qemu-iotests/061
index 9507c223bd..70edf1a163 100755
--- a/tests/qemu-iotests/061
+++ b/tests/qemu-iotests/061
@@ -55,9 +55,9 @@ echo "=== Testing version downgrade with zero expansion ==="
 echo
 _make_test_img -o "compat=1.1,lazy_refcounts=on" 64M
 $QEMU_IO -c "write -z 0 128k" "$TEST_IMG" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=0.10" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0 0 128k" "$TEST_IMG" | _filter_qemu_io
 _check_test_img
 
@@ -68,10 +68,10 @@ _make_test_img -o "compat=1.1,lazy_refcounts=on" 64M
 $QEMU_IO -c "write -z 0 128k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IO -c "write -z 32M 128k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IO -c map "$TEST_IMG" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=0.10" --image-opts \
           driver=qcow2,file.filename=$TEST_IMG,l2-cache-entry-size=4096
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0 0 128k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IO -c "read -P 0 32M 128k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IO -c map "$TEST_IMG" | _filter_qemu_io
@@ -84,9 +84,9 @@ _make_test_img -o "compat=1.1,lazy_refcounts=on" 64M
 _NO_VALGRIND \
 $QEMU_IO -c "write -P 0x2a 0 128k" -c flush \
          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=0.10" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0x2a 0 128k" "$TEST_IMG" | _filter_qemu_io
 _check_test_img
 
@@ -96,9 +96,9 @@ echo
 _make_test_img -o "compat=1.1" 64M
 $PYTHON qcow2.py "$TEST_IMG" set-feature-bit compatible 42
 $PYTHON qcow2.py "$TEST_IMG" set-feature-bit autoclear 42
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=0.10" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 _check_test_img
 
 echo
@@ -106,9 +106,9 @@ echo "=== Testing version upgrade and resize ==="
 echo
 _make_test_img -o "compat=0.10" 64M
 $QEMU_IO -c "write -P 0x2a 42M 64k" "$TEST_IMG" | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "compat=1.1,lazy_refcounts=on,size=128M" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0x2a 42M 64k" "$TEST_IMG" | _filter_qemu_io
 _check_test_img
 
@@ -120,29 +120,29 @@ $QEMU_IO -c "write -P 0x2a 24M 64k" "$TEST_IMG" | _filter_qemu_io
 $QEMU_IMG snapshot -c foo "$TEST_IMG"
 $QEMU_IMG resize "$TEST_IMG" 64M &&
     echo "unexpected pass"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG amend -o "compat=1.1,size=128M" "$TEST_IMG" ||
     echo "unexpected fail"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG snapshot -c bar "$TEST_IMG"
 $QEMU_IMG resize --shrink "$TEST_IMG" 64M ||
     echo "unexpected fail"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG amend -o "compat=0.10,size=32M" "$TEST_IMG" &&
     echo "unexpected pass"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG snapshot -a bar "$TEST_IMG" ||
     echo "unexpected fail"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 $QEMU_IMG snapshot -d bar "$TEST_IMG"
 $QEMU_IMG amend -o "compat=0.10,size=32M" "$TEST_IMG" ||
     echo "unexpected fail"
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep '^\(version\|size\|nb_snap\)'
+_qcow2_dump_header | grep '^\(version\|size\|nb_snap\)'
 
 _check_test_img
 
@@ -154,9 +154,9 @@ _make_test_img -o "compat=1.1,lazy_refcounts=on" 64M
 _NO_VALGRIND \
 $QEMU_IO -c "write -P 0x2a 0 128k" -c flush \
          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 | _filter_qemu_io
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IMG amend -o "lazy_refcounts=off" "$TEST_IMG"
-$PYTHON qcow2.py "$TEST_IMG" dump-header
+_qcow2_dump_header
 $QEMU_IO -c "read -P 0x2a 0 128k" "$TEST_IMG" | _filter_qemu_io
 _check_test_img
 
diff --git a/tests/qemu-iotests/137 b/tests/qemu-iotests/137
index 4680d5df3d..52ee135184 100755
--- a/tests/qemu-iotests/137
+++ b/tests/qemu-iotests/137
@@ -140,7 +140,7 @@ $QEMU_IO \
 
 # The dirty bit must not be set
 # (Filter the external data file bit)
-if $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features \
+if _qcow2_dump_header | grep incompatible_features \
     | grep -q '\<0\>'
 then
     echo 'ERROR: Dirty bit set'
diff --git a/tests/qemu-iotests/287 b/tests/qemu-iotests/287
index 22ce9ff0e4..6716419da4 100755
--- a/tests/qemu-iotests/287
+++ b/tests/qemu-iotests/287
@@ -61,13 +61,13 @@ echo
 echo "=== Testing compression type incompatible bit setting for zlib ==="
 echo
 _make_test_img -o compression_type=zlib 64M
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "=== Testing compression type incompatible bit setting for zstd ==="
 echo
 _make_test_img -o compression_type=zstd 64M
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 echo
 echo "=== Testing zlib with incompatible bit set ==="
@@ -75,7 +75,7 @@ echo
 _make_test_img -o compression_type=zlib 64M
 $PYTHON qcow2.py "$TEST_IMG" set-feature-bit incompatible 3
 # to make sure the bit was actually set
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 if $QEMU_IMG info "$TEST_IMG" >/dev/null 2>&1 ; then
     echo "Error: The image opened successfully. The image must not be opened."
@@ -87,7 +87,7 @@ echo
 _make_test_img -o compression_type=zstd 64M
 $PYTHON qcow2.py "$TEST_IMG" set-header incompatible_features 0
 # to make sure the bit was actually unset
-$PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
+_qcow2_dump_header | grep incompatible_features
 
 if $QEMU_IMG info "$TEST_IMG" >/dev/null 2>&1 ; then
     echo "Error: The image opened successfully. The image must not be opened."
