block: Use JSON null instead of "" to disable backing file

[qemu.git] / tests / qemu-iotests / 120

diff --git a/tests/qemu-iotests/120 b/tests/qemu-iotests/120
index 4f88a67fe1fa4bfdd0a3ba6851b5ad8b7eb839b5..f40b97d099901580eab6e28b775acf75ad51f1b9 100755 (executable)
--- a/tests/qemu-iotests/120
+++ b/tests/qemu-iotests/120
@@ -41,6 +41,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt generic
 _supported_proto file
 _supported_os Linux
+_unsupported_fmt luks
 
 _make_test_img 64M