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+#!/usr/bin/env python3
+# group: rw quick
+#
+# Test reopening a format driver's file child
+#
+# Copyright (C) 2022 Red Hat, Inc.
+#
+# 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 os
+import iotests
+from iotests import imgfmt, qemu_img_create, QMPTestCase
+
+
+image_size = 1 * 1024 * 1024
+test_img = os.path.join(iotests.test_dir, 'test.img')
+
+
+class TestReopenFile(QMPTestCase):
+ def setUp(self) -> None:
+ assert qemu_img_create('-f', imgfmt, test_img, str(image_size)) == 0
+
+ # Add format driver node ('format') on top of the file ('file'), then
+ # add another raw node ('raw') on top of 'file' so for the reopen we
+ # can just switch from 'file' to 'raw'
+ self.vm = iotests.VM()
+ self.vm.add_blockdev(self.vm.qmp_to_opts({
+ 'driver': imgfmt,
+ 'node-name': 'format',
+ 'file': {
+ 'driver': 'file',
+ 'node-name': 'file',
+ 'filename': test_img
+ }
+ }))
+ self.vm.add_blockdev(self.vm.qmp_to_opts({
+ 'driver': 'raw',
+ 'node-name': 'raw',
+ 'file': 'file'
+ }))
+ self.vm.launch()
+
+ def tearDown(self) -> None:
+ self.vm.shutdown()
+ os.remove(test_img)
+
+ # Check if there was any qemu-io run that failed
+ if 'Pattern verification failed' in self.vm.get_log():
+ print('ERROR: Pattern verification failed:')
+ print(self.vm.get_log())
+ self.fail('qemu-io pattern verification failed')
+
+ def test_reopen_file(self) -> None:
+ result = self.vm.qmp('blockdev-reopen', options=[{
+ 'driver': imgfmt,
+ 'node-name': 'format',
+ 'file': 'raw'
+ }])
+ self.assert_qmp(result, 'return', {})
+
+ # Do some I/O to the image to see whether it still works
+ # (Pattern verification will be checked by tearDown())
+ result = self.vm.qmp('human-monitor-command',
+ command_line='qemu-io format "write -P 42 0 64k"')
+ self.assert_qmp(result, 'return', '')
+
+ result = self.vm.qmp('human-monitor-command',
+ command_line='qemu-io format "read -P 42 0 64k"')
+ self.assert_qmp(result, 'return', '')
+
+
+if __name__ == '__main__':
+ # Must support creating images and reopen
+ iotests.main(supported_fmts=['qcow', 'qcow2', 'qed', 'raw', 'vdi', 'vhdx',
+ 'vmdk', 'vpc'],
+ supported_protocols=['file'])
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+.
+----------------------------------------------------------------------
+Ran 1 tests
+
+OK
This should work for all format drivers that support reopening, so test it. (This serves as a regression test for HEAD^: This test used to fail for VMDK before HEAD^.) Signed-off-by: Hanna Reitz <hreitz@redhat.com> --- tests/qemu-iotests/tests/reopen-file | 88 ++++++++++++++++++++++++ tests/qemu-iotests/tests/reopen-file.out | 5 ++ 2 files changed, 93 insertions(+) create mode 100755 tests/qemu-iotests/tests/reopen-file create mode 100644 tests/qemu-iotests/tests/reopen-file.out