tests/qemu-iotests/056

   1 #!/usr/bin/env python
   2 #
   3 # Tests for drive-backup
   4 #
   5 # Copyright (C) 2013 Red Hat, Inc.
   6 #
   7 # Based on 041.
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 2 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 #
  22
  23 import time
  24 import os
  25 import iotests
  26 from iotests import qemu_img, qemu_io, create_image
  27
  28 backing_img = os.path.join(iotests.test_dir, 'backing.img')
  29 test_img = os.path.join(iotests.test_dir, 'test.img')
  30 target_img = os.path.join(iotests.test_dir, 'target.img')
  31
  32 class TestSyncModesNoneAndTop(iotests.QMPTestCase):
  33     image_len = 64 * 1024 * 1024 # MB
  34
  35     def setUp(self):
  36         create_image(backing_img, TestSyncModesNoneAndTop.image_len)
  37         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
  38         qemu_io('-c', 'write -P0x41 0 512', test_img)
  39         qemu_io('-c', 'write -P0xd5 1M 32k', test_img)
  40         qemu_io('-c', 'write -P0xdc 32M 124k', test_img)
  41         qemu_io('-c', 'write -P0xdc 67043328 64k', test_img)
  42         self.vm = iotests.VM().add_drive(test_img)
  43         self.vm.launch()
  44
  45     def tearDown(self):
  46         self.vm.shutdown()
  47         os.remove(test_img)
  48         os.remove(backing_img)
  49         try:
  50             os.remove(target_img)
  51         except OSError:
  52             pass
  53
  54     def test_complete_top(self):
  55         self.assert_no_active_block_jobs()
  56         result = self.vm.qmp('drive-backup', device='drive0', sync='top',
  57                              format=iotests.imgfmt, target=target_img)
  58         self.assert_qmp(result, 'return', {})
  59
  60         # Custom completed check as we are not copying all data.
  61         completed = False
  62         while not completed:
  63             for event in self.vm.get_qmp_events(wait=True):
  64                 if event['event'] == 'BLOCK_JOB_COMPLETED':
  65                     self.assert_qmp(event, 'data/device', 'drive0')
  66                     self.assert_qmp_absent(event, 'data/error')
  67                     completed = True
  68
  69         self.assert_no_active_block_jobs()
  70         self.vm.shutdown()
  71         self.assertTrue(iotests.compare_images(test_img, target_img),
  72                         'target image does not match source after backup')
  73
  74     def test_cancel_sync_none(self):
  75         self.assert_no_active_block_jobs()
  76
  77         result = self.vm.qmp('drive-backup', device='drive0',
  78                              sync='none', target=target_img)
  79         self.assert_qmp(result, 'return', {})
  80         time.sleep(1)
  81         self.vm.hmp_qemu_io('drive0', 'write -P0x5e 0 512')
  82         self.vm.hmp_qemu_io('drive0', 'aio_flush')
  83         # Verify that the original contents exist in the target image.
  84
  85         event = self.cancel_and_wait()
  86         self.assert_qmp(event, 'data/type', 'backup')
  87
  88         self.vm.shutdown()
  89         time.sleep(1)
  90         self.assertEqual(-1, qemu_io('-c', 'read -P0x41 0 512', target_img).find("verification failed"))
  91
  92
  93 if __name__ == '__main__':
  94     iotests.main(supported_fmts=['qcow2', 'qed'])