tests/qemu-iotests/040

   1 #!/usr/bin/env python
   2 #
   3 # Tests for image block commit.
   4 #
   5 # Copyright (C) 2012 IBM, Corp.
   6 # Copyright (C) 2012 Red Hat, Inc.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21 # Test for live block commit
  22 # Derived from Image Streaming Test 030
  23
  24 import time
  25 import os
  26 import iotests
  27 from iotests import qemu_img, qemu_io
  28 import struct
  29 import errno
  30
  31 backing_img = os.path.join(iotests.test_dir, 'backing.img')
  32 mid_img = os.path.join(iotests.test_dir, 'mid.img')
  33 test_img = os.path.join(iotests.test_dir, 'test.img')
  34
  35 class ImageCommitTestCase(iotests.QMPTestCase):
  36     '''Abstract base class for image commit test cases'''
  37
  38     def assert_no_active_commit(self):
  39         result = self.vm.qmp('query-block-jobs')
  40         self.assert_qmp(result, 'return', [])
  41
  42 class TestSingleDrive(ImageCommitTestCase):
  43     image_len = 1 * 1024 * 1024
  44     test_len = 1 * 1024 * 256
  45
  46     def setUp(self):
  47         iotests.create_image(backing_img, TestSingleDrive.image_len)
  48         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
  49         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
  50         qemu_io('-c', 'write -P 0xab 0 524288', backing_img)
  51         qemu_io('-c', 'write -P 0xef 524288 524288', mid_img)
  52         self.vm = iotests.VM().add_drive(test_img)
  53         self.vm.launch()
  54
  55     def tearDown(self):
  56         self.vm.shutdown()
  57         os.remove(test_img)
  58         os.remove(mid_img)
  59         os.remove(backing_img)
  60
  61     def test_commit(self):
  62         self.assert_no_active_commit()
  63         result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img)
  64         self.assert_qmp(result, 'return', {})
  65
  66         completed = False
  67         while not completed:
  68             for event in self.vm.get_qmp_events(wait=True):
  69                 if event['event'] == 'BLOCK_JOB_COMPLETED':
  70                     self.assert_qmp(event, 'data/type', 'commit')
  71                     self.assert_qmp(event, 'data/device', 'drive0')
  72                     self.assert_qmp(event, 'data/offset', self.image_len)
  73                     self.assert_qmp(event, 'data/len', self.image_len)
  74                     completed = True
  75
  76         self.assert_no_active_commit()
  77         self.vm.shutdown()
  78
  79         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
  80         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
  81
  82     def test_device_not_found(self):
  83         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img)
  84         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
  85
  86     def test_top_same_base(self):
  87         self.assert_no_active_commit()
  88         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img)
  89         self.assert_qmp(result, 'error/class', 'GenericError')
  90         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % backing_img)
  91
  92     def test_top_invalid(self):
  93         self.assert_no_active_commit()
  94         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img)
  95         self.assert_qmp(result, 'error/class', 'GenericError')
  96         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
  97
  98     def test_base_invalid(self):
  99         self.assert_no_active_commit()
 100         result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile')
 101         self.assert_qmp(result, 'error/class', 'GenericError')
 102         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 103
 104     def test_top_is_active(self):
 105         self.assert_no_active_commit()
 106         result = self.vm.qmp('block-commit', device='drive0', top='%s' % test_img, base='%s' % backing_img)
 107         self.assert_qmp(result, 'error/class', 'GenericError')
 108         self.assert_qmp(result, 'error/desc', 'Top image as the active layer is currently unsupported')
 109
 110     def test_top_and_base_reversed(self):
 111         self.assert_no_active_commit()
 112         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img)
 113         self.assert_qmp(result, 'error/class', 'GenericError')
 114         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % mid_img)
 115
 116     def test_top_omitted(self):
 117         self.assert_no_active_commit()
 118         result = self.vm.qmp('block-commit', device='drive0')
 119         self.assert_qmp(result, 'error/class', 'GenericError')
 120         self.assert_qmp(result, 'error/desc', "Parameter 'top' is missing")
 121
 122 class TestRelativePaths(ImageCommitTestCase):
 123     image_len = 1 * 1024 * 1024
 124     test_len = 1 * 1024 * 256
 125
 126     dir1 = "dir1"
 127     dir2 = "dir2/"
 128     dir3 = "dir2/dir3/"
 129
 130     test_img = os.path.join(iotests.test_dir, dir3, 'test.img')
 131     mid_img = "../mid.img"
 132     backing_img = "../dir1/backing.img"
 133
 134     backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img')
 135     mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img')
 136
 137     def setUp(self):
 138         try:
 139             os.mkdir(os.path.join(iotests.test_dir, self.dir1))
 140             os.mkdir(os.path.join(iotests.test_dir, self.dir2))
 141             os.mkdir(os.path.join(iotests.test_dir, self.dir3))
 142         except OSError as exception:
 143             if exception.errno != errno.EEXIST:
 144                 raise
 145         iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len)
 146         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.backing_img_abs, self.mid_img_abs)
 147         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.mid_img_abs, self.test_img)
 148         qemu_img('rebase', '-u', '-b', self.backing_img, self.mid_img_abs)
 149         qemu_img('rebase', '-u', '-b', self.mid_img, self.test_img)
 150         qemu_io('-c', 'write -P 0xab 0 524288', self.backing_img_abs)
 151         qemu_io('-c', 'write -P 0xef 524288 524288', self.mid_img_abs)
 152         self.vm = iotests.VM().add_drive(self.test_img)
 153         self.vm.launch()
 154
 155     def tearDown(self):
 156         self.vm.shutdown()
 157         os.remove(self.test_img)
 158         os.remove(self.mid_img_abs)
 159         os.remove(self.backing_img_abs)
 160         try:
 161             os.rmdir(os.path.join(iotests.test_dir, self.dir1))
 162             os.rmdir(os.path.join(iotests.test_dir, self.dir3))
 163             os.rmdir(os.path.join(iotests.test_dir, self.dir2))
 164         except OSError as exception:
 165             if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY:
 166                 raise
 167
 168     def test_commit(self):
 169         self.assert_no_active_commit()
 170         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img)
 171         self.assert_qmp(result, 'return', {})
 172
 173         completed = False
 174         while not completed:
 175             for event in self.vm.get_qmp_events(wait=True):
 176                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 177                     self.assert_qmp(event, 'data/type', 'commit')
 178                     self.assert_qmp(event, 'data/device', 'drive0')
 179                     self.assert_qmp(event, 'data/offset', self.image_len)
 180                     self.assert_qmp(event, 'data/len', self.image_len)
 181                     completed = True
 182
 183         self.assert_no_active_commit()
 184         self.vm.shutdown()
 185
 186         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed"))
 187         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed"))
 188
 189     def test_device_not_found(self):
 190         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img)
 191         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
 192
 193     def test_top_same_base(self):
 194         self.assert_no_active_commit()
 195         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img)
 196         self.assert_qmp(result, 'error/class', 'GenericError')
 197         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 198
 199     def test_top_invalid(self):
 200         self.assert_no_active_commit()
 201         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img)
 202         self.assert_qmp(result, 'error/class', 'GenericError')
 203         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
 204
 205     def test_base_invalid(self):
 206         self.assert_no_active_commit()
 207         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile')
 208         self.assert_qmp(result, 'error/class', 'GenericError')
 209         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 210
 211     def test_top_is_active(self):
 212         self.assert_no_active_commit()
 213         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.test_img, base='%s' % self.backing_img)
 214         self.assert_qmp(result, 'error/class', 'GenericError')
 215         self.assert_qmp(result, 'error/desc', 'Top image as the active layer is currently unsupported')
 216
 217     def test_top_and_base_reversed(self):
 218         self.assert_no_active_commit()
 219         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img)
 220         self.assert_qmp(result, 'error/class', 'GenericError')
 221         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 222
 223
 224 class TestSetSpeed(ImageCommitTestCase):
 225     image_len = 80 * 1024 * 1024 # MB
 226
 227     def setUp(self):
 228         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 229         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
 230         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
 231         qemu_io('-c', 'write -P 0x1 0 512', test_img)
 232         self.vm = iotests.VM().add_drive(test_img)
 233         self.vm.launch()
 234
 235     def tearDown(self):
 236         self.vm.shutdown()
 237         os.remove(test_img)
 238         os.remove(mid_img)
 239         os.remove(backing_img)
 240
 241     def test_set_speed(self):
 242         self.assert_no_active_commit()
 243
 244         self.vm.pause_drive('drive0')
 245         result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024)
 246         self.assert_qmp(result, 'return', {})
 247
 248         # Ensure the speed we set was accepted
 249         result = self.vm.qmp('query-block-jobs')
 250         self.assert_qmp(result, 'return[0]/device', 'drive0')
 251         self.assert_qmp(result, 'return[0]/speed', 1024 * 1024)
 252
 253         self.cancel_and_wait(resume=True)
 254
 255
 256 if __name__ == '__main__':
 257     iotests.main(supported_fmts=['qcow2', 'qed'])