diff --git a/nova/tests/unit/virt/libvirt/test_driver.py b/nova/tests/unit/virt/libvirt/test_driver.py
index 417d919c0a..2cc841acda 100644
--- a/nova/tests/unit/virt/libvirt/test_driver.py
+++ b/nova/tests/unit/virt/libvirt/test_driver.py
@@ -17982,19 +17982,6 @@ class LibvirtDriverTestCase(test.NoDBTestCase):
         mock_rename.assert_has_calls([
             mock.call(_path_qcow, path)])
 
-    @mock.patch('nova.utils.execute')
-    @mock.patch('os.rename')
-    def test_disk_qcow2_to_raw(self, mock_rename, mock_execute):
-        path = '/test/disk'
-        _path_raw = path + '_raw'
-
-        self.drvr._disk_qcow2_to_raw(path)
-        mock_execute.assert_has_calls([
-            mock.call('qemu-img', 'convert', '-f', 'qcow2',
-                      '-O', 'raw', path, _path_raw)])
-        mock_rename.assert_has_calls([
-            mock.call(_path_raw, path)])
-
     @mock.patch.object(libvirt_driver.LibvirtDriver, '_inject_data')
     @mock.patch.object(libvirt_driver.LibvirtDriver, 'get_info')
     @mock.patch.object(libvirt_driver.LibvirtDriver,
diff --git a/nova/virt/libvirt/driver.py b/nova/virt/libvirt/driver.py
index 9d69503c0f..ff42a64cbc 100644
--- a/nova/virt/libvirt/driver.py
+++ b/nova/virt/libvirt/driver.py
@@ -8223,14 +8223,6 @@ class LibvirtDriver(driver.ComputeDriver):
                       '-O', 'qcow2', path, path_qcow)
         os.rename(path_qcow, path)
 
-    @staticmethod
-    def _disk_qcow2_to_raw(path):
-        """Converts a qcow2 disk to raw."""
-        path_raw = path + '_raw'
-        utils.execute('qemu-img', 'convert', '-f', 'qcow2',
-                      '-O', 'raw', path, path_raw)
-        os.rename(path_raw, path)
-
     def finish_migration(self, context, migration, instance, disk_info,
                          network_info, image_meta, resize_instance,
                          block_device_info=None, power_on=True):