diff --git a/tests/qemu-iotests/234 b/tests/qemu-iotests/234
index 1f695d337a..b119b4cc4d 100755
--- a/tests/qemu-iotests/234
+++ b/tests/qemu-iotests/234
@@ -27,11 +27,13 @@ iotests.verify_image_format(supported_fmts=['raw', 'qcow2'])
 iotests.verify_platform(['linux'])
 
 with iotests.FilePath('img') as img_path, \
+     iotests.FilePath('backing') as backing_path, \
      iotests.FilePath('mig_fifo_a') as fifo_a, \
      iotests.FilePath('mig_fifo_b') as fifo_b, \
      iotests.VM(path_suffix='a') as vm_a, \
      iotests.VM(path_suffix='b') as vm_b:
 
+    iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, backing_path, '64M')
     iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, img_path, '64M')
 
     os.mkfifo(fifo_a)
@@ -40,14 +42,20 @@ with iotests.FilePath('img') as img_path, \
     iotests.log('Launching source VM...')
     (vm_a.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path))
          .add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt))
+         .add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path))
+         .add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt))
          .launch())
 
     iotests.log('Launching destination VM...')
     (vm_b.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path))
          .add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt))
+         .add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path))
+         .add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt))
          .add_incoming("exec: cat '%s'" % (fifo_a))
          .launch())
 
+    vm_a.qmp('blockdev-snapshot', node='drive0-backing', overlay='drive0')
+
     iotests.log('Enabling migration QMP events on A...')
     iotests.log(vm_a.qmp('migrate-set-capabilities', capabilities=[
         {