[Qemu-devel] [PATCH v2 2/2] block: test 'blockdev-snapshot' using a file BDS as the overlay

[Alberto Garcia]

This test checks that it is not possible to create a snapshot using as
the overlay node a BDS that does not support backing images.

Signed-off-by: Alberto Garcia <be...@igalia.com>
---
 tests/qemu-iotests/085     | 12 +++++++++++-
 tests/qemu-iotests/085.out |  4 ++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/085 b/tests/qemu-iotests/085
index 9484117..ccde2ae 100755
--- a/tests/qemu-iotests/085
+++ b/tests/qemu-iotests/085
@@ -103,7 +103,8 @@ function add_snapshot_image()
            { 'options':
              { 'driver': 'qcow2', 'node-name': 'snap_"${1}"', "${extra_params}"
                'file':
-               { 'driver': 'file', 'filename': '"${snapshot_file}"' } } } }"
+               { 'driver': 'file', 'filename': '"${snapshot_file}"',
+                 'node-name': 'file_"${1}"' } } } }"
     _send_qemu_cmd $h "${cmd}" "return"
 }
 
@@ -187,6 +188,15 @@ add_snapshot_image ${SNAPSHOTS}
 blockdev_snapshot ${SNAPSHOTS}
 
 echo
+echo === Invalid command - cannot create a snapshot using a file BDS ===
+echo
+
+_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
+                     'arguments': { 'node':'virtio0',
+                                    'overlay':'file_"${SNAPSHOTS}"' }
+                   }" "error"
+
+echo
 echo === Invalid command - snapshot node used as active layer ===
 echo
 
diff --git a/tests/qemu-iotests/085.out b/tests/qemu-iotests/085.out
index 52292ea..01c78d6 100644
--- a/tests/qemu-iotests/085.out
+++ b/tests/qemu-iotests/085.out
@@ -62,6 +62,10 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
backing_file=TEST_DIR/
 {"return": {}}
 {"return": {}}
 
+=== Invalid command - cannot create a snapshot using a file BDS ===
+
+{"error": {"class": "GenericError", "desc": "The snapshot does not support 
backing images"}}
+
 === Invalid command - snapshot node used as active layer ===
 
 {"error": {"class": "GenericError", "desc": "The snapshot is already in use by 
virtio0"}}
-- 
2.6.1