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         self.wait_until_completed(check_offset=False)
  61
  62         self.assert_no_active_block_jobs()
  63         self.vm.shutdown()
  64         self.assertTrue(iotests.compare_images(test_img, target_img),
  65                         'target image does not match source after backup')
  66
  67     def test_cancel_sync_none(self):
  68         self.assert_no_active_block_jobs()
  69
  70         result = self.vm.qmp('drive-backup', device='drive0',
  71                              sync='none', target=target_img)
  72         self.assert_qmp(result, 'return', {})
  73         time.sleep(1)
  74         self.vm.hmp_qemu_io('drive0', 'write -P0x5e 0 512')
  75         self.vm.hmp_qemu_io('drive0', 'aio_flush')
  76         # Verify that the original contents exist in the target image.
  77
  78         event = self.cancel_and_wait()
  79         self.assert_qmp(event, 'data/type', 'backup')
  80
  81         self.vm.shutdown()
  82         time.sleep(1)
  83         self.assertEqual(-1, qemu_io('-c', 'read -P0x41 0 512', target_img).find("verification failed"))
  84
  85 class TestBeforeWriteNotifier(iotests.QMPTestCase):
  86     def setUp(self):
  87         self.vm = iotests.VM().add_drive_raw("file=blkdebug::null-co://,id=drive0,align=65536,driver=blkdebug")
  88         self.vm.launch()
  89
  90     def tearDown(self):
  91         self.vm.shutdown()
  92         os.remove(target_img)
  93
  94     def test_before_write_notifier(self):
  95         self.vm.pause_drive("drive0")
  96         result = self.vm.qmp('drive-backup', device='drive0',
  97                              sync='full', target=target_img,
  98                              format="file", speed=1)
  99         self.assert_qmp(result, 'return', {})
 100         result = self.vm.qmp('block-job-pause', device="drive0")
 101         self.assert_qmp(result, 'return', {})
 102         # Speed is low enough that this must be an uncopied range, which will
 103         # trigger the before write notifier
 104         self.vm.hmp_qemu_io('drive0', 'aio_write -P 1 512512 512')
 105         self.vm.resume_drive("drive0")
 106         result = self.vm.qmp('block-job-resume', device="drive0")
 107         self.assert_qmp(result, 'return', {})
 108         event = self.cancel_and_wait()
 109         self.assert_qmp(event, 'data/type', 'backup')
 110
 111 if __name__ == '__main__':
 112     iotests.main(supported_fmts=['qcow2', 'qed'])