tests/qemu-iotests/041

   1 #!/usr/bin/env python
   2 #
   3 # Tests for image mirroring.
   4 #
   5 # Copyright (C) 2012 Red Hat, Inc.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 import time
  22 import os
  23 import iotests
  24 from iotests import qemu_img, qemu_io
  25
  26 backing_img = os.path.join(iotests.test_dir, 'backing.img')
  27 target_backing_img = os.path.join(iotests.test_dir, 'target-backing.img')
  28 test_img = os.path.join(iotests.test_dir, 'test.img')
  29 target_img = os.path.join(iotests.test_dir, 'target.img')
  30
  31 quorum_img1 = os.path.join(iotests.test_dir, 'quorum1.img')
  32 quorum_img2 = os.path.join(iotests.test_dir, 'quorum2.img')
  33 quorum_img3 = os.path.join(iotests.test_dir, 'quorum3.img')
  34 quorum_repair_img = os.path.join(iotests.test_dir, 'quorum_repair.img')
  35 quorum_snapshot_file = os.path.join(iotests.test_dir, 'quorum_snapshot.img')
  36
  37 class TestSingleDrive(iotests.QMPTestCase):
  38     image_len = 1 * 1024 * 1024 # MB
  39     qmp_cmd = 'drive-mirror'
  40     qmp_target = target_img
  41
  42     def setUp(self):
  43         iotests.create_image(backing_img, self.image_len)
  44         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
  45         self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=base")
  46         if iotests.qemu_default_machine == 'pc':
  47             self.vm.add_drive(None, 'media=cdrom', 'ide')
  48         self.vm.launch()
  49
  50     def tearDown(self):
  51         self.vm.shutdown()
  52         os.remove(test_img)
  53         os.remove(backing_img)
  54         try:
  55             os.remove(target_img)
  56         except OSError:
  57             pass
  58
  59     def test_complete(self):
  60         self.assert_no_active_block_jobs()
  61
  62         result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
  63                              target=self.qmp_target)
  64         self.assert_qmp(result, 'return', {})
  65
  66         self.complete_and_wait()
  67         result = self.vm.qmp('query-block')
  68         self.assert_qmp(result, 'return[0]/inserted/file', target_img)
  69         self.vm.shutdown()
  70         self.assertTrue(iotests.compare_images(test_img, target_img),
  71                         'target image does not match source after mirroring')
  72
  73     def test_cancel(self):
  74         self.assert_no_active_block_jobs()
  75
  76         result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
  77                              target=self.qmp_target)
  78         self.assert_qmp(result, 'return', {})
  79
  80         self.cancel_and_wait(force=True)
  81         result = self.vm.qmp('query-block')
  82         self.assert_qmp(result, 'return[0]/inserted/file', test_img)
  83         self.vm.shutdown()
  84
  85     def test_cancel_after_ready(self):
  86         self.assert_no_active_block_jobs()
  87
  88         result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
  89                              target=self.qmp_target)
  90         self.assert_qmp(result, 'return', {})
  91
  92         self.wait_ready_and_cancel()
  93         result = self.vm.qmp('query-block')
  94         self.assert_qmp(result, 'return[0]/inserted/file', test_img)
  95         self.vm.shutdown()
  96         self.assertTrue(iotests.compare_images(test_img, target_img),
  97                         'target image does not match source after mirroring')
  98
  99     def test_pause(self):
 100         self.assert_no_active_block_jobs()
 101
 102         result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
 103                              target=self.qmp_target)
 104         self.assert_qmp(result, 'return', {})
 105
 106         self.pause_job('drive0')
 107
 108         result = self.vm.qmp('query-block-jobs')
 109         offset = self.dictpath(result, 'return[0]/offset')
 110
 111         time.sleep(0.5)
 112         result = self.vm.qmp('query-block-jobs')
 113         self.assert_qmp(result, 'return[0]/offset', offset)
 114
 115         result = self.vm.qmp('block-job-resume', device='drive0')
 116         self.assert_qmp(result, 'return', {})
 117
 118         self.complete_and_wait()
 119         self.vm.shutdown()
 120         self.assertTrue(iotests.compare_images(test_img, target_img),
 121                         'target image does not match source after mirroring')
 122
 123     def test_small_buffer(self):
 124         self.assert_no_active_block_jobs()
 125
 126         # A small buffer is rounded up automatically
 127         result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
 128                              buf_size=4096, target=self.qmp_target)
 129         self.assert_qmp(result, 'return', {})
 130
 131         self.complete_and_wait()
 132         result = self.vm.qmp('query-block')
 133         self.assert_qmp(result, 'return[0]/inserted/file', target_img)
 134         self.vm.shutdown()
 135         self.assertTrue(iotests.compare_images(test_img, target_img),
 136                         'target image does not match source after mirroring')
 137
 138     def test_small_buffer2(self):
 139         self.assert_no_active_block_jobs()
 140
 141         qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,size=%d'
 142                         % (self.image_len, self.image_len), target_img)
 143         result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
 144                              buf_size=65536, mode='existing', target=self.qmp_target)
 145         self.assert_qmp(result, 'return', {})
 146
 147         self.complete_and_wait()
 148         result = self.vm.qmp('query-block')
 149         self.assert_qmp(result, 'return[0]/inserted/file', target_img)
 150         self.vm.shutdown()
 151         self.assertTrue(iotests.compare_images(test_img, target_img),
 152                         'target image does not match source after mirroring')
 153
 154     def test_large_cluster(self):
 155         self.assert_no_active_block_jobs()
 156
 157         qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s'
 158                         % (self.image_len, backing_img), target_img)
 159         result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
 160                              mode='existing', target=self.qmp_target)
 161         self.assert_qmp(result, 'return', {})
 162
 163         self.complete_and_wait()
 164         result = self.vm.qmp('query-block')
 165         self.assert_qmp(result, 'return[0]/inserted/file', target_img)
 166         self.vm.shutdown()
 167         self.assertTrue(iotests.compare_images(test_img, target_img),
 168                         'target image does not match source after mirroring')
 169
 170     # Tests that the insertion of the mirror_top filter node doesn't make a
 171     # difference to query-block
 172     def test_implicit_node(self):
 173         self.assert_no_active_block_jobs()
 174
 175         result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
 176                              target=self.qmp_target)
 177         self.assert_qmp(result, 'return', {})
 178
 179         result = self.vm.qmp('query-block')
 180         self.assert_qmp(result, 'return[0]/inserted/file', test_img)
 181         self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt)
 182         self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img)
 183         self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1)
 184         self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img)
 185         self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img)
 186
 187         result = self.vm.qmp('query-blockstats')
 188         self.assert_qmp(result, 'return[0]/node-name', 'top')
 189         self.assert_qmp(result, 'return[0]/backing/node-name', 'base')
 190
 191         self.cancel_and_wait(force=True)
 192         result = self.vm.qmp('query-block')
 193         self.assert_qmp(result, 'return[0]/inserted/file', test_img)
 194         self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt)
 195         self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img)
 196         self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1)
 197         self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img)
 198         self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img)
 199
 200         result = self.vm.qmp('query-blockstats')
 201         self.assert_qmp(result, 'return[0]/node-name', 'top')
 202         self.assert_qmp(result, 'return[0]/backing/node-name', 'base')
 203
 204         self.vm.shutdown()
 205
 206     def test_medium_not_found(self):
 207         if iotests.qemu_default_machine != 'pc':
 208             return
 209
 210         result = self.vm.qmp(self.qmp_cmd, device='ide1-cd0', sync='full',
 211                              target=self.qmp_target)
 212         self.assert_qmp(result, 'error/class', 'GenericError')
 213
 214     def test_image_not_found(self):
 215         result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full',
 216                              mode='existing', target=self.qmp_target)
 217         self.assert_qmp(result, 'error/class', 'GenericError')
 218
 219     def test_device_not_found(self):
 220         result = self.vm.qmp(self.qmp_cmd, device='nonexistent', sync='full',
 221                              target=self.qmp_target)
 222         self.assert_qmp(result, 'error/class', 'GenericError')
 223
 224 class TestSingleBlockdev(TestSingleDrive):
 225     qmp_cmd = 'blockdev-mirror'
 226     qmp_target = 'node1'
 227
 228     def setUp(self):
 229         TestSingleDrive.setUp(self)
 230         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img)
 231         args = {'driver': iotests.imgfmt,
 232                 'node-name': self.qmp_target,
 233                 'file': { 'filename': target_img, 'driver': 'file' } }
 234         result = self.vm.qmp("blockdev-add", **args)
 235         self.assert_qmp(result, 'return', {})
 236
 237     test_large_cluster = None
 238     test_image_not_found = None
 239     test_small_buffer2 = None
 240
 241 class TestSingleDriveZeroLength(TestSingleDrive):
 242     image_len = 0
 243     test_small_buffer2 = None
 244     test_large_cluster = None
 245
 246 class TestSingleBlockdevZeroLength(TestSingleBlockdev):
 247     image_len = 0
 248
 249 class TestSingleDriveUnalignedLength(TestSingleDrive):
 250     image_len = 1025 * 1024
 251     test_small_buffer2 = None
 252     test_large_cluster = None
 253
 254 class TestSingleBlockdevUnalignedLength(TestSingleBlockdev):
 255     image_len = 1025 * 1024
 256
 257 class TestMirrorNoBacking(iotests.QMPTestCase):
 258     image_len = 2 * 1024 * 1024 # MB
 259
 260     def setUp(self):
 261         iotests.create_image(backing_img, TestMirrorNoBacking.image_len)
 262         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 263         self.vm = iotests.VM().add_drive(test_img)
 264         self.vm.launch()
 265
 266     def tearDown(self):
 267         self.vm.shutdown()
 268         os.remove(test_img)
 269         os.remove(backing_img)
 270         try:
 271             os.remove(target_backing_img)
 272         except:
 273             pass
 274         os.remove(target_img)
 275
 276     def test_complete(self):
 277         self.assert_no_active_block_jobs()
 278
 279         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img)
 280         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 281                              mode='existing', target=target_img)
 282         self.assert_qmp(result, 'return', {})
 283
 284         self.complete_and_wait()
 285         result = self.vm.qmp('query-block')
 286         self.assert_qmp(result, 'return[0]/inserted/file', target_img)
 287         self.vm.shutdown()
 288         self.assertTrue(iotests.compare_images(test_img, target_img),
 289                         'target image does not match source after mirroring')
 290
 291     def test_cancel(self):
 292         self.assert_no_active_block_jobs()
 293
 294         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img)
 295         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 296                              mode='existing', target=target_img)
 297         self.assert_qmp(result, 'return', {})
 298
 299         self.wait_ready_and_cancel()
 300         result = self.vm.qmp('query-block')
 301         self.assert_qmp(result, 'return[0]/inserted/file', test_img)
 302         self.vm.shutdown()
 303         self.assertTrue(iotests.compare_images(test_img, target_img),
 304                         'target image does not match source after mirroring')
 305
 306     def test_large_cluster(self):
 307         self.assert_no_active_block_jobs()
 308
 309         # qemu-img create fails if the image is not there
 310         qemu_img('create', '-f', iotests.imgfmt, '-o', 'size=%d'
 311                         %(TestMirrorNoBacking.image_len), target_backing_img)
 312         qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s'
 313                         % (TestMirrorNoBacking.image_len, target_backing_img), target_img)
 314
 315         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 316                              mode='existing', target=target_img)
 317         self.assert_qmp(result, 'return', {})
 318
 319         self.complete_and_wait()
 320         result = self.vm.qmp('query-block')
 321         self.assert_qmp(result, 'return[0]/inserted/file', target_img)
 322         self.vm.shutdown()
 323         self.assertTrue(iotests.compare_images(test_img, target_img),
 324                         'target image does not match source after mirroring')
 325
 326 class TestMirrorResized(iotests.QMPTestCase):
 327     backing_len = 1 * 1024 * 1024 # MB
 328     image_len = 2 * 1024 * 1024 # MB
 329
 330     def setUp(self):
 331         iotests.create_image(backing_img, TestMirrorResized.backing_len)
 332         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 333         qemu_img('resize', test_img, '2M')
 334         self.vm = iotests.VM().add_drive(test_img)
 335         self.vm.launch()
 336
 337     def tearDown(self):
 338         self.vm.shutdown()
 339         os.remove(test_img)
 340         os.remove(backing_img)
 341         try:
 342             os.remove(target_img)
 343         except OSError:
 344             pass
 345
 346     def test_complete_top(self):
 347         self.assert_no_active_block_jobs()
 348
 349         result = self.vm.qmp('drive-mirror', device='drive0', sync='top',
 350                              target=target_img)
 351         self.assert_qmp(result, 'return', {})
 352
 353         self.complete_and_wait()
 354         result = self.vm.qmp('query-block')
 355         self.assert_qmp(result, 'return[0]/inserted/file', target_img)
 356         self.vm.shutdown()
 357         self.assertTrue(iotests.compare_images(test_img, target_img),
 358                         'target image does not match source after mirroring')
 359
 360     def test_complete_full(self):
 361         self.assert_no_active_block_jobs()
 362
 363         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 364                              target=target_img)
 365         self.assert_qmp(result, 'return', {})
 366
 367         self.complete_and_wait()
 368         result = self.vm.qmp('query-block')
 369         self.assert_qmp(result, 'return[0]/inserted/file', target_img)
 370         self.vm.shutdown()
 371         self.assertTrue(iotests.compare_images(test_img, target_img),
 372                         'target image does not match source after mirroring')
 373
 374 class TestReadErrors(iotests.QMPTestCase):
 375     image_len = 2 * 1024 * 1024 # MB
 376
 377     # this should be a multiple of twice the default granularity
 378     # so that we hit this offset first in state 1
 379     MIRROR_GRANULARITY = 1024 * 1024
 380
 381     def create_blkdebug_file(self, name, event, errno):
 382         file = open(name, 'w')
 383         file.write('''
 384 [inject-error]
 385 state = "1"
 386 event = "%s"
 387 errno = "%d"
 388 immediately = "off"
 389 once = "on"
 390 sector = "%d"
 391
 392 [set-state]
 393 state = "1"
 394 event = "%s"
 395 new_state = "2"
 396
 397 [set-state]
 398 state = "2"
 399 event = "%s"
 400 new_state = "1"
 401 ''' % (event, errno, self.MIRROR_GRANULARITY / 512, event, event))
 402         file.close()
 403
 404     def setUp(self):
 405         self.blkdebug_file = backing_img + ".blkdebug"
 406         iotests.create_image(backing_img, TestReadErrors.image_len)
 407         self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5)
 408         qemu_img('create', '-f', iotests.imgfmt,
 409                  '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw'
 410                        % (self.blkdebug_file, backing_img),
 411                  test_img)
 412         # Write something for tests that use sync='top'
 413         qemu_io('-c', 'write %d 512' % (self.MIRROR_GRANULARITY + 65536),
 414                         test_img)
 415         self.vm = iotests.VM().add_drive(test_img)
 416         self.vm.launch()
 417
 418     def tearDown(self):
 419         self.vm.shutdown()
 420         os.remove(test_img)
 421         os.remove(target_img)
 422         os.remove(backing_img)
 423         os.remove(self.blkdebug_file)
 424
 425     def test_report_read(self):
 426         self.assert_no_active_block_jobs()
 427
 428         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 429                              target=target_img)
 430         self.assert_qmp(result, 'return', {})
 431
 432         completed = False
 433         error = False
 434         while not completed:
 435             for event in self.vm.get_qmp_events(wait=True):
 436                 if event['event'] == 'BLOCK_JOB_ERROR':
 437                     self.assert_qmp(event, 'data/device', 'drive0')
 438                     self.assert_qmp(event, 'data/operation', 'read')
 439                     error = True
 440                 elif event['event'] == 'BLOCK_JOB_READY':
 441                     self.assertTrue(False, 'job completed unexpectedly')
 442                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 443                     self.assertTrue(error, 'job completed unexpectedly')
 444                     self.assert_qmp(event, 'data/type', 'mirror')
 445                     self.assert_qmp(event, 'data/device', 'drive0')
 446                     self.assert_qmp(event, 'data/error', 'Input/output error')
 447                     completed = True
 448
 449         self.assert_no_active_block_jobs()
 450         self.vm.shutdown()
 451
 452     def test_ignore_read(self):
 453         self.assert_no_active_block_jobs()
 454
 455         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 456                              target=target_img, on_source_error='ignore')
 457         self.assert_qmp(result, 'return', {})
 458
 459         event = self.vm.get_qmp_event(wait=True)
 460         self.assertEquals(event['event'], 'BLOCK_JOB_ERROR')
 461         self.assert_qmp(event, 'data/device', 'drive0')
 462         self.assert_qmp(event, 'data/operation', 'read')
 463         result = self.vm.qmp('query-block-jobs')
 464         self.assert_qmp(result, 'return[0]/paused', False)
 465         self.complete_and_wait()
 466         self.vm.shutdown()
 467
 468     def test_large_cluster(self):
 469         self.assert_no_active_block_jobs()
 470
 471         # Test COW into the target image.  The first half of the
 472         # cluster at MIRROR_GRANULARITY has to be copied from
 473         # backing_img, even though sync='top'.
 474         qemu_img('create', '-f', iotests.imgfmt, '-ocluster_size=131072,backing_file=%s' %(backing_img), target_img)
 475         result = self.vm.qmp('drive-mirror', device='drive0', sync='top',
 476                              on_source_error='ignore',
 477                              mode='existing', target=target_img)
 478         self.assert_qmp(result, 'return', {})
 479
 480         event = self.vm.get_qmp_event(wait=True)
 481         self.assertEquals(event['event'], 'BLOCK_JOB_ERROR')
 482         self.assert_qmp(event, 'data/device', 'drive0')
 483         self.assert_qmp(event, 'data/operation', 'read')
 484         result = self.vm.qmp('query-block-jobs')
 485         self.assert_qmp(result, 'return[0]/paused', False)
 486         self.complete_and_wait()
 487         self.vm.shutdown()
 488
 489         # Detach blkdebug to compare images successfully
 490         qemu_img('rebase', '-f', iotests.imgfmt, '-u', '-b', backing_img, test_img)
 491         self.assertTrue(iotests.compare_images(test_img, target_img),
 492                         'target image does not match source after mirroring')
 493
 494     def test_stop_read(self):
 495         self.assert_no_active_block_jobs()
 496
 497         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 498                              target=target_img, on_source_error='stop')
 499         self.assert_qmp(result, 'return', {})
 500
 501         error = False
 502         ready = False
 503         while not ready:
 504             for event in self.vm.get_qmp_events(wait=True):
 505                 if event['event'] == 'BLOCK_JOB_ERROR':
 506                     self.assert_qmp(event, 'data/device', 'drive0')
 507                     self.assert_qmp(event, 'data/operation', 'read')
 508
 509                     result = self.vm.qmp('query-block-jobs')
 510                     self.assert_qmp(result, 'return[0]/paused', True)
 511                     self.assert_qmp(result, 'return[0]/io-status', 'failed')
 512
 513                     result = self.vm.qmp('block-job-resume', device='drive0')
 514                     self.assert_qmp(result, 'return', {})
 515                     error = True
 516                 elif event['event'] == 'BLOCK_JOB_READY':
 517                     self.assertTrue(error, 'job completed unexpectedly')
 518                     self.assert_qmp(event, 'data/device', 'drive0')
 519                     ready = True
 520
 521         result = self.vm.qmp('query-block-jobs')
 522         self.assert_qmp(result, 'return[0]/paused', False)
 523         self.assert_qmp(result, 'return[0]/io-status', 'ok')
 524
 525         self.complete_and_wait(wait_ready=False)
 526         self.assert_no_active_block_jobs()
 527         self.vm.shutdown()
 528
 529 class TestWriteErrors(iotests.QMPTestCase):
 530     image_len = 2 * 1024 * 1024 # MB
 531
 532     # this should be a multiple of twice the default granularity
 533     # so that we hit this offset first in state 1
 534     MIRROR_GRANULARITY = 1024 * 1024
 535
 536     def create_blkdebug_file(self, name, event, errno):
 537         file = open(name, 'w')
 538         file.write('''
 539 [inject-error]
 540 state = "1"
 541 event = "%s"
 542 errno = "%d"
 543 immediately = "off"
 544 once = "on"
 545 sector = "%d"
 546
 547 [set-state]
 548 state = "1"
 549 event = "%s"
 550 new_state = "2"
 551
 552 [set-state]
 553 state = "2"
 554 event = "%s"
 555 new_state = "1"
 556 ''' % (event, errno, self.MIRROR_GRANULARITY / 512, event, event))
 557         file.close()
 558
 559     def setUp(self):
 560         self.blkdebug_file = target_img + ".blkdebug"
 561         iotests.create_image(backing_img, TestWriteErrors.image_len)
 562         self.create_blkdebug_file(self.blkdebug_file, "write_aio", 5)
 563         qemu_img('create', '-f', iotests.imgfmt, '-obacking_file=%s' %(backing_img), test_img)
 564         self.vm = iotests.VM().add_drive(test_img)
 565         self.target_img = 'blkdebug:%s:%s' % (self.blkdebug_file, target_img)
 566         qemu_img('create', '-f', iotests.imgfmt, '-osize=%d' %(TestWriteErrors.image_len), target_img)
 567         self.vm.launch()
 568
 569     def tearDown(self):
 570         self.vm.shutdown()
 571         os.remove(test_img)
 572         os.remove(target_img)
 573         os.remove(backing_img)
 574         os.remove(self.blkdebug_file)
 575
 576     def test_report_write(self):
 577         self.assert_no_active_block_jobs()
 578
 579         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 580                              mode='existing', target=self.target_img)
 581         self.assert_qmp(result, 'return', {})
 582
 583         completed = False
 584         error = False
 585         while not completed:
 586             for event in self.vm.get_qmp_events(wait=True):
 587                 if event['event'] == 'BLOCK_JOB_ERROR':
 588                     self.assert_qmp(event, 'data/device', 'drive0')
 589                     self.assert_qmp(event, 'data/operation', 'write')
 590                     error = True
 591                 elif event['event'] == 'BLOCK_JOB_READY':
 592                     self.assertTrue(False, 'job completed unexpectedly')
 593                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 594                     self.assertTrue(error, 'job completed unexpectedly')
 595                     self.assert_qmp(event, 'data/type', 'mirror')
 596                     self.assert_qmp(event, 'data/device', 'drive0')
 597                     self.assert_qmp(event, 'data/error', 'Input/output error')
 598                     completed = True
 599
 600         self.assert_no_active_block_jobs()
 601         self.vm.shutdown()
 602
 603     def test_ignore_write(self):
 604         self.assert_no_active_block_jobs()
 605
 606         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 607                              mode='existing', target=self.target_img,
 608                              on_target_error='ignore')
 609         self.assert_qmp(result, 'return', {})
 610
 611         event = self.vm.get_qmp_event(wait=True)
 612         self.assertEquals(event['event'], 'BLOCK_JOB_ERROR')
 613         self.assert_qmp(event, 'data/device', 'drive0')
 614         self.assert_qmp(event, 'data/operation', 'write')
 615         result = self.vm.qmp('query-block-jobs')
 616         self.assert_qmp(result, 'return[0]/paused', False)
 617         self.complete_and_wait()
 618         self.vm.shutdown()
 619
 620     def test_stop_write(self):
 621         self.assert_no_active_block_jobs()
 622
 623         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 624                              mode='existing', target=self.target_img,
 625                              on_target_error='stop')
 626         self.assert_qmp(result, 'return', {})
 627
 628         error = False
 629         ready = False
 630         while not ready:
 631             for event in self.vm.get_qmp_events(wait=True):
 632                 if event['event'] == 'BLOCK_JOB_ERROR':
 633                     self.assert_qmp(event, 'data/device', 'drive0')
 634                     self.assert_qmp(event, 'data/operation', 'write')
 635
 636                     result = self.vm.qmp('query-block-jobs')
 637                     self.assert_qmp(result, 'return[0]/paused', True)
 638                     self.assert_qmp(result, 'return[0]/io-status', 'failed')
 639
 640                     result = self.vm.qmp('block-job-resume', device='drive0')
 641                     self.assert_qmp(result, 'return', {})
 642
 643                     result = self.vm.qmp('query-block-jobs')
 644                     self.assert_qmp(result, 'return[0]/paused', False)
 645                     self.assert_qmp(result, 'return[0]/io-status', 'ok')
 646                     error = True
 647                 elif event['event'] == 'BLOCK_JOB_READY':
 648                     self.assertTrue(error, 'job completed unexpectedly')
 649                     self.assert_qmp(event, 'data/device', 'drive0')
 650                     ready = True
 651
 652         self.complete_and_wait(wait_ready=False)
 653         self.assert_no_active_block_jobs()
 654         self.vm.shutdown()
 655
 656 class TestSetSpeed(iotests.QMPTestCase):
 657     image_len = 80 * 1024 * 1024 # MB
 658
 659     def setUp(self):
 660         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 661         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 662         self.vm = iotests.VM().add_drive(test_img)
 663         self.vm.launch()
 664
 665     def tearDown(self):
 666         self.vm.shutdown()
 667         os.remove(test_img)
 668         os.remove(backing_img)
 669         os.remove(target_img)
 670
 671     def test_set_speed(self):
 672         self.assert_no_active_block_jobs()
 673
 674         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 675                              target=target_img)
 676         self.assert_qmp(result, 'return', {})
 677
 678         # Default speed is 0
 679         result = self.vm.qmp('query-block-jobs')
 680         self.assert_qmp(result, 'return[0]/device', 'drive0')
 681         self.assert_qmp(result, 'return[0]/speed', 0)
 682
 683         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 684         self.assert_qmp(result, 'return', {})
 685
 686         # Ensure the speed we set was accepted
 687         result = self.vm.qmp('query-block-jobs')
 688         self.assert_qmp(result, 'return[0]/device', 'drive0')
 689         self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024)
 690
 691         self.wait_ready_and_cancel()
 692
 693         # Check setting speed in drive-mirror works
 694         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 695                              target=target_img, speed=4*1024*1024)
 696         self.assert_qmp(result, 'return', {})
 697
 698         result = self.vm.qmp('query-block-jobs')
 699         self.assert_qmp(result, 'return[0]/device', 'drive0')
 700         self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024)
 701
 702         self.wait_ready_and_cancel()
 703
 704     def test_set_speed_invalid(self):
 705         self.assert_no_active_block_jobs()
 706
 707         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 708                              target=target_img, speed=-1)
 709         self.assert_qmp(result, 'error/class', 'GenericError')
 710
 711         self.assert_no_active_block_jobs()
 712
 713         result = self.vm.qmp('drive-mirror', device='drive0', sync='full',
 714                              target=target_img)
 715         self.assert_qmp(result, 'return', {})
 716
 717         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1)
 718         self.assert_qmp(result, 'error/class', 'GenericError')
 719
 720         self.wait_ready_and_cancel()
 721
 722 class TestUnbackedSource(iotests.QMPTestCase):
 723     image_len = 2 * 1024 * 1024 # MB
 724
 725     def setUp(self):
 726         qemu_img('create', '-f', iotests.imgfmt, test_img,
 727                  str(TestUnbackedSource.image_len))
 728         self.vm = iotests.VM().add_drive(test_img)
 729         self.vm.launch()
 730
 731     def tearDown(self):
 732         self.vm.shutdown()
 733         os.remove(test_img)
 734         os.remove(target_img)
 735
 736     def test_absolute_paths_full(self):
 737         self.assert_no_active_block_jobs()
 738         result = self.vm.qmp('drive-mirror', device='drive0',
 739                              sync='full', target=target_img,
 740                              mode='absolute-paths')
 741         self.assert_qmp(result, 'return', {})
 742         self.complete_and_wait()
 743         self.assert_no_active_block_jobs()
 744
 745     def test_absolute_paths_top(self):
 746         self.assert_no_active_block_jobs()
 747         result = self.vm.qmp('drive-mirror', device='drive0',
 748                              sync='top', target=target_img,
 749                              mode='absolute-paths')
 750         self.assert_qmp(result, 'return', {})
 751         self.complete_and_wait()
 752         self.assert_no_active_block_jobs()
 753
 754     def test_absolute_paths_none(self):
 755         self.assert_no_active_block_jobs()
 756         result = self.vm.qmp('drive-mirror', device='drive0',
 757                              sync='none', target=target_img,
 758                              mode='absolute-paths')
 759         self.assert_qmp(result, 'return', {})
 760         self.complete_and_wait()
 761         self.assert_no_active_block_jobs()
 762
 763 class TestGranularity(iotests.QMPTestCase):
 764     image_len = 10 * 1024 * 1024 # MB
 765
 766     def setUp(self):
 767         qemu_img('create', '-f', iotests.imgfmt, test_img,
 768                  str(TestGranularity.image_len))
 769         qemu_io('-c', 'write 0 %d' % (self.image_len),
 770                 test_img)
 771         self.vm = iotests.VM().add_drive(test_img)
 772         self.vm.launch()
 773
 774     def tearDown(self):
 775         self.vm.shutdown()
 776         self.assertTrue(iotests.compare_images(test_img, target_img),
 777                         'target image does not match source after mirroring')
 778         os.remove(test_img)
 779         os.remove(target_img)
 780
 781     def test_granularity(self):
 782         self.assert_no_active_block_jobs()
 783         result = self.vm.qmp('drive-mirror', device='drive0',
 784                              sync='full', target=target_img,
 785                              mode='absolute-paths', granularity=8192)
 786         self.assert_qmp(result, 'return', {})
 787         event = self.vm.get_qmp_event(wait=60.0)
 788         # Failures will manifest as COMPLETED/ERROR.
 789         self.assert_qmp(event, 'event', 'BLOCK_JOB_READY')
 790         self.complete_and_wait(drive='drive0', wait_ready=False)
 791         self.assert_no_active_block_jobs()
 792
 793 class TestRepairQuorum(iotests.QMPTestCase):
 794     """ This class test quorum file repair using drive-mirror.
 795         It's mostly a fork of TestSingleDrive """
 796     image_len = 1 * 1024 * 1024 # MB
 797     IMAGES = [ quorum_img1, quorum_img2, quorum_img3 ]
 798
 799     def setUp(self):
 800         self.vm = iotests.VM()
 801
 802         if iotests.qemu_default_machine == 'pc':
 803             self.vm.add_drive(None, 'media=cdrom', 'ide')
 804
 805         # Add each individual quorum images
 806         for i in self.IMAGES:
 807             qemu_img('create', '-f', iotests.imgfmt, i,
 808                      str(TestSingleDrive.image_len))
 809             # Assign a node name to each quorum image in order to manipulate
 810             # them
 811             opts = "node-name=img%i" % self.IMAGES.index(i)
 812             self.vm = self.vm.add_drive(i, opts)
 813
 814         self.vm.launch()
 815
 816         #assemble the quorum block device from the individual files
 817         args = { "driver": "quorum", "node-name": "quorum0",
 818                  "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] }
 819         if iotests.supports_quorum():
 820             result = self.vm.qmp("blockdev-add", **args)
 821             self.assert_qmp(result, 'return', {})
 822
 823
 824     def tearDown(self):
 825         self.vm.shutdown()
 826         for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file ]:
 827             # Do a try/except because the test may have deleted some images
 828             try:
 829                 os.remove(i)
 830             except OSError:
 831                 pass
 832
 833     def test_complete(self):
 834         if not iotests.supports_quorum():
 835             return
 836
 837         self.assert_no_active_block_jobs()
 838
 839         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
 840                              sync='full', node_name="repair0", replaces="img1",
 841                              target=quorum_repair_img, format=iotests.imgfmt)
 842         self.assert_qmp(result, 'return', {})
 843
 844         self.complete_and_wait(drive="job0")
 845         self.assert_has_block_node("repair0", quorum_repair_img)
 846         # TODO: a better test requiring some QEMU infrastructure will be added
 847         #       to check that this file is really driven by quorum
 848         self.vm.shutdown()
 849         self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img),
 850                         'target image does not match source after mirroring')
 851
 852     def test_cancel(self):
 853         if not iotests.supports_quorum():
 854             return
 855
 856         self.assert_no_active_block_jobs()
 857
 858         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
 859                              sync='full', node_name="repair0", replaces="img1",
 860                              target=quorum_repair_img, format=iotests.imgfmt)
 861         self.assert_qmp(result, 'return', {})
 862
 863         self.cancel_and_wait(drive="job0", force=True)
 864         # here we check that the last registered quorum file has not been
 865         # swapped out and unref
 866         self.assert_has_block_node(None, quorum_img3)
 867         self.vm.shutdown()
 868
 869     def test_cancel_after_ready(self):
 870         if not iotests.supports_quorum():
 871             return
 872
 873         self.assert_no_active_block_jobs()
 874
 875         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
 876                              sync='full', node_name="repair0", replaces="img1",
 877                              target=quorum_repair_img, format=iotests.imgfmt)
 878         self.assert_qmp(result, 'return', {})
 879
 880         self.wait_ready_and_cancel(drive="job0")
 881         # here we check that the last registered quorum file has not been
 882         # swapped out and unref
 883         self.assert_has_block_node(None, quorum_img3)
 884         self.vm.shutdown()
 885         self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img),
 886                         'target image does not match source after mirroring')
 887
 888     def test_pause(self):
 889         if not iotests.supports_quorum():
 890             return
 891
 892         self.assert_no_active_block_jobs()
 893
 894         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
 895                              sync='full', node_name="repair0", replaces="img1",
 896                              target=quorum_repair_img, format=iotests.imgfmt)
 897         self.assert_qmp(result, 'return', {})
 898
 899         self.pause_job('job0')
 900
 901         result = self.vm.qmp('query-block-jobs')
 902         offset = self.dictpath(result, 'return[0]/offset')
 903
 904         time.sleep(0.5)
 905         result = self.vm.qmp('query-block-jobs')
 906         self.assert_qmp(result, 'return[0]/offset', offset)
 907
 908         result = self.vm.qmp('block-job-resume', device='job0')
 909         self.assert_qmp(result, 'return', {})
 910
 911         self.complete_and_wait(drive="job0")
 912         self.vm.shutdown()
 913         self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img),
 914                         'target image does not match source after mirroring')
 915
 916     def test_medium_not_found(self):
 917         if not iotests.supports_quorum():
 918             return
 919
 920         if iotests.qemu_default_machine != 'pc':
 921             return
 922
 923         result = self.vm.qmp('drive-mirror', job_id='job0', device='drive0', # CD-ROM
 924                              sync='full',
 925                              node_name='repair0',
 926                              replaces='img1',
 927                              target=quorum_repair_img, format=iotests.imgfmt)
 928         self.assert_qmp(result, 'error/class', 'GenericError')
 929
 930     def test_image_not_found(self):
 931         if not iotests.supports_quorum():
 932             return
 933
 934         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
 935                              sync='full', node_name='repair0', replaces='img1',
 936                              mode='existing', target=quorum_repair_img,
 937                              format=iotests.imgfmt)
 938         self.assert_qmp(result, 'error/class', 'GenericError')
 939
 940     def test_device_not_found(self):
 941         if not iotests.supports_quorum():
 942             return
 943
 944         result = self.vm.qmp('drive-mirror', job_id='job0',
 945                              device='nonexistent', sync='full',
 946                              node_name='repair0',
 947                              replaces='img1',
 948                              target=quorum_repair_img, format=iotests.imgfmt)
 949         self.assert_qmp(result, 'error/class', 'GenericError')
 950
 951     def test_wrong_sync_mode(self):
 952         if not iotests.supports_quorum():
 953             return
 954
 955         result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0',
 956                              node_name='repair0',
 957                              replaces='img1',
 958                              target=quorum_repair_img, format=iotests.imgfmt)
 959         self.assert_qmp(result, 'error/class', 'GenericError')
 960
 961     def test_no_node_name(self):
 962         if not iotests.supports_quorum():
 963             return
 964
 965         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
 966                              sync='full', replaces='img1',
 967                              target=quorum_repair_img, format=iotests.imgfmt)
 968         self.assert_qmp(result, 'error/class', 'GenericError')
 969
 970     def test_nonexistent_replaces(self):
 971         if not iotests.supports_quorum():
 972             return
 973
 974         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
 975                              sync='full', node_name='repair0', replaces='img77',
 976                              target=quorum_repair_img, format=iotests.imgfmt)
 977         self.assert_qmp(result, 'error/class', 'GenericError')
 978
 979     def test_after_a_quorum_snapshot(self):
 980         if not iotests.supports_quorum():
 981             return
 982
 983         result = self.vm.qmp('blockdev-snapshot-sync', node_name='img1',
 984                              snapshot_file=quorum_snapshot_file,
 985                              snapshot_node_name="snap1");
 986
 987         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
 988                              sync='full', node_name='repair0', replaces="img1",
 989                              target=quorum_repair_img, format=iotests.imgfmt)
 990         self.assert_qmp(result, 'error/class', 'GenericError')
 991
 992         result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0',
 993                              sync='full', node_name='repair0', replaces="snap1",
 994                              target=quorum_repair_img, format=iotests.imgfmt)
 995         self.assert_qmp(result, 'return', {})
 996
 997         self.complete_and_wait('job0')
 998         self.assert_has_block_node("repair0", quorum_repair_img)
 999         # TODO: a better test requiring some QEMU infrastructure will be added
1000         #       to check that this file is really driven by quorum
1001         self.vm.shutdown()
1002
1003 # Test mirroring with a source that does not have any parents (not even a
1004 # BlockBackend)
1005 class TestOrphanedSource(iotests.QMPTestCase):
1006     def setUp(self):
1007         blk0 = { 'node-name': 'src',
1008                  'driver': 'null-co' }
1009
1010         blk1 = { 'node-name': 'dest',
1011                  'driver': 'null-co' }
1012
1013         blk2 = { 'node-name': 'dest-ro',
1014                  'driver': 'null-co',
1015                  'read-only': 'on' }
1016
1017         self.vm = iotests.VM()
1018         self.vm.add_blockdev(self.qmp_to_opts(blk0))
1019         self.vm.add_blockdev(self.qmp_to_opts(blk1))
1020         self.vm.add_blockdev(self.qmp_to_opts(blk2))
1021         self.vm.launch()
1022
1023     def tearDown(self):
1024         self.vm.shutdown()
1025
1026     def test_no_job_id(self):
1027         self.assert_no_active_block_jobs()
1028
1029         result = self.vm.qmp('blockdev-mirror', device='src', sync='full',
1030                              target='dest')
1031         self.assert_qmp(result, 'error/class', 'GenericError')
1032
1033     def test_success(self):
1034         self.assert_no_active_block_jobs()
1035
1036         result = self.vm.qmp('blockdev-mirror', job_id='job', device='src',
1037                              sync='full', target='dest')
1038         self.assert_qmp(result, 'return', {})
1039
1040         self.complete_and_wait('job')
1041
1042     def test_failing_permissions(self):
1043         self.assert_no_active_block_jobs()
1044
1045         result = self.vm.qmp('blockdev-mirror', device='src', sync='full',
1046                              target='dest-ro')
1047         self.assert_qmp(result, 'error/class', 'GenericError')
1048
1049 if __name__ == '__main__':
1050     iotests.main(supported_fmts=['qcow2', 'qed'])