[PATCH 14/14] iotests: add test for blockdev-del(force=false)

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Test for new option: use NBD server killing to simulate failure on file
close.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 .../tests/blockdev-del-close-failure          | 54 +++++++++++++++++++
 .../tests/blockdev-del-close-failure.out      |  4 ++
 2 files changed, 58 insertions(+)
 create mode 100755 tests/qemu-iotests/tests/blockdev-del-close-failure
 create mode 100644 tests/qemu-iotests/tests/blockdev-del-close-failure.out

diff --git a/tests/qemu-iotests/tests/blockdev-del-close-failure b/tests/qemu-iotests/tests/blockdev-del-close-failure
new file mode 100755
index 0000000000..12b442f43f
--- /dev/null
+++ b/tests/qemu-iotests/tests/blockdev-del-close-failure
@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+#
+# Test blockdev-add force=false
+#
+# Copyright (c) 2022 Virtuozzo International GmbH.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+import iotests
+from iotests import qemu_img_create, qemu_img, qemu_nbd_popen, qemu_img_pipe
+
+iotests.script_initialize(supported_fmts=['qcow2'],
+                          unsupported_imgopts=['compat'])
+
+disk, nbd_sock = iotests.file_path('disk', 'nbd-sock')
+size = '1M'
+
+assert qemu_img_create('-f', iotests.imgfmt, disk, size) == 0
+assert qemu_img('bitmap', '--add', disk, 'bitmap0') == 0
+assert 'bitmaps' in qemu_img_pipe('info', disk)
+
+vm = iotests.VM()
+vm.launch()
+
+with qemu_nbd_popen('-k', nbd_sock, '-f', 'raw', disk):
+    result = vm.qmp('blockdev-add', {
+        'node-name': 'disk0',
+        'driver': 'qcow2',
+        'file': {
+            'driver': 'nbd',
+            'server': {
+                'type': 'unix',
+                'path': nbd_sock
+            }
+        }
+    })
+    assert result == {'return': {}}
+
+# Now bitmap is loaded and marked IN_USE in the image, but connection is lost
+# Bitmap can't be saved and blockdev-del(force=false) should fail
+vm.qmp_log('blockdev-del', node_name='disk0', force=False)
+vm.shutdown()
diff --git a/tests/qemu-iotests/tests/blockdev-del-close-failure.out b/tests/qemu-iotests/tests/blockdev-del-close-failure.out
new file mode 100644
index 0000000000..4a4776cc98
--- /dev/null
+++ b/tests/qemu-iotests/tests/blockdev-del-close-failure.out
@@ -0,0 +1,4 @@
+Start NBD server
+Kill NBD server
+{"execute": "blockdev-del", "arguments": {"force": false, "node-name": "disk0"}}
+{"error": {"class": "GenericError", "desc": "Failed to flush node 'disk0'"}}
-- 
2.31.1