iotests: Test case for drive-mirror with unaligned image size

#!/usr/bin/env python

#

# Tests for drive-mirror with source size unaligned to granularity

#

# Copyright (C) 2016 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 qemu_img

test_img = os.path.join(iotests.test_dir, 'test.img')

target_img = os.path.join(iotests.test_dir, 'target.img')

class TestUnaligned(iotests.QMPTestCase):

    def setUp(self):

        qemu_img('create', '-f', iotests.imgfmt, test_img, '512')

        self.vm = iotests.VM().add_drive(test_img)

        self.vm.launch()

    def tearDown(self):

        self.vm.shutdown()

        os.remove(test_img)

        try:

            os.remove(target_img)

        except OSError:

            pass

    def test_unaligned(self):

        result = self.vm.qmp('drive-mirror', device='drive0', sync='full',

                             granularity=65536, target=target_img)

        self.complete_and_wait()

        self.vm.shutdown()

        self.assertEqual(iotests.image_size(test_img), iotests.image_size(target_img),

                         "Target size doesn't match source when granularity when unaligend")

    def test_unaligned_with_update(self):

        result = self.vm.qmp('drive-mirror', device='drive0', sync='full',

                             granularity=65536, target=target_img)

        self.wait_ready()

        self.vm.hmp_qemu_io('drive0', 'write 0 512')

        self.complete_and_wait(wait_ready=False)

        self.vm.shutdown()

        self.assertEqual(iotests.image_size(test_img), iotests.image_size(target_img),

                         "Target size doesn't match source when granularity when unaligend")

if __name__ == '__main__':

    iotests.main(supported_fmts=['raw', 'qcow2'])

..

----------------------------------------------------------------------

Ran 2 tests

OK

148 rw auto quick

149 rw auto sudo

150 rw auto quick

152 rw auto quick