tests/qemu-iotests/030

   1 #!/usr/bin/env python
   2 #
   3 # Tests for image streaming.
   4 #
   5 # Copyright (C) 2012 IBM Corp.
   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 mid_img = os.path.join(iotests.test_dir, 'mid.img')
  28 test_img = os.path.join(iotests.test_dir, 'test.img')
  29
  30 class TestSingleDrive(iotests.QMPTestCase):
  31     image_len = 1 * 1024 * 1024 # MB
  32
  33     def setUp(self):
  34         iotests.create_image(backing_img, TestSingleDrive.image_len)
  35         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
  36         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
  37         qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 512', backing_img)
  38         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 524288 512', mid_img)
  39         self.vm = iotests.VM().add_drive("blkdebug::" + test_img, "backing.node-name=mid")
  40         self.vm.launch()
  41
  42     def tearDown(self):
  43         self.vm.shutdown()
  44         os.remove(test_img)
  45         os.remove(mid_img)
  46         os.remove(backing_img)
  47
  48     def test_stream(self):
  49         self.assert_no_active_block_jobs()
  50
  51         result = self.vm.qmp('block-stream', device='drive0')
  52         self.assert_qmp(result, 'return', {})
  53
  54         self.wait_until_completed()
  55
  56         self.assert_no_active_block_jobs()
  57         self.vm.shutdown()
  58
  59         self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img),
  60                          qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
  61                          'image file map does not match backing file after streaming')
  62
  63     def test_stream_intermediate(self):
  64         self.assert_no_active_block_jobs()
  65
  66         self.assertNotEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img),
  67                             qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img),
  68                             'image file map matches backing file before streaming')
  69
  70         result = self.vm.qmp('block-stream', device='mid', job_id='stream-mid')
  71         self.assert_qmp(result, 'return', {})
  72
  73         self.wait_until_completed(drive='stream-mid')
  74
  75         self.assert_no_active_block_jobs()
  76         self.vm.shutdown()
  77
  78         self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img),
  79                          qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img),
  80                          'image file map does not match backing file after streaming')
  81
  82     def test_stream_pause(self):
  83         self.assert_no_active_block_jobs()
  84
  85         self.vm.pause_drive('drive0')
  86         result = self.vm.qmp('block-stream', device='drive0')
  87         self.assert_qmp(result, 'return', {})
  88
  89         result = self.vm.qmp('block-job-pause', device='drive0')
  90         self.assert_qmp(result, 'return', {})
  91
  92         time.sleep(1)
  93         result = self.vm.qmp('query-block-jobs')
  94         offset = self.dictpath(result, 'return[0]/offset')
  95
  96         time.sleep(1)
  97         result = self.vm.qmp('query-block-jobs')
  98         self.assert_qmp(result, 'return[0]/offset', offset)
  99
 100         result = self.vm.qmp('block-job-resume', device='drive0')
 101         self.assert_qmp(result, 'return', {})
 102
 103         self.vm.resume_drive('drive0')
 104         self.wait_until_completed()
 105
 106         self.assert_no_active_block_jobs()
 107         self.vm.shutdown()
 108
 109         self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img),
 110                          qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
 111                          'image file map does not match backing file after streaming')
 112
 113     def test_stream_no_op(self):
 114         self.assert_no_active_block_jobs()
 115
 116         # The image map is empty before the operation
 117         empty_map = qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img)
 118
 119         # This is a no-op: no data should ever be copied from the base image
 120         result = self.vm.qmp('block-stream', device='drive0', base=mid_img)
 121         self.assert_qmp(result, 'return', {})
 122
 123         self.wait_until_completed()
 124
 125         self.assert_no_active_block_jobs()
 126         self.vm.shutdown()
 127
 128         self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
 129                          empty_map, 'image file map changed after a no-op')
 130
 131     def test_stream_partial(self):
 132         self.assert_no_active_block_jobs()
 133
 134         result = self.vm.qmp('block-stream', device='drive0', base=backing_img)
 135         self.assert_qmp(result, 'return', {})
 136
 137         self.wait_until_completed()
 138
 139         self.assert_no_active_block_jobs()
 140         self.vm.shutdown()
 141
 142         self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img),
 143                          qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
 144                          'image file map does not match backing file after streaming')
 145
 146     def test_device_not_found(self):
 147         result = self.vm.qmp('block-stream', device='nonexistent')
 148         self.assert_qmp(result, 'error/class', 'GenericError')
 149
 150
 151 class TestParallelOps(iotests.QMPTestCase):
 152     num_ops = 4 # Number of parallel block-stream operations
 153     num_imgs = num_ops * 2 + 1
 154     image_len = num_ops * 1024 * 1024
 155     imgs = []
 156
 157     def setUp(self):
 158         opts = []
 159         self.imgs = []
 160
 161         # Initialize file names and command-line options
 162         for i in range(self.num_imgs):
 163             img_depth = self.num_imgs - i - 1
 164             opts.append("backing." * img_depth + "node-name=node%d" % i)
 165             self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i))
 166
 167         # Create all images
 168         iotests.create_image(self.imgs[0], self.image_len)
 169         for i in range(1, self.num_imgs):
 170             qemu_img('create', '-f', iotests.imgfmt,
 171                      '-o', 'backing_file=%s' % self.imgs[i-1], self.imgs[i])
 172
 173         # Put data into the images we are copying data from
 174         for i in range(self.num_imgs / 2):
 175             img_index = i * 2 + 1
 176             # Alternate between 512k and 1M.
 177             # This way jobs will not finish in the same order they were created
 178             num_kb = 512 + 512 * (i % 2)
 179             qemu_io('-f', iotests.imgfmt,
 180                     '-c', 'write -P %d %d %d' % (i, i*1024*1024, num_kb * 1024),
 181                     self.imgs[img_index])
 182
 183         # Attach the drive to the VM
 184         self.vm = iotests.VM()
 185         self.vm.add_drive(self.imgs[-1], ','.join(opts))
 186         self.vm.launch()
 187
 188     def tearDown(self):
 189         self.vm.shutdown()
 190         for img in self.imgs:
 191             os.remove(img)
 192
 193     # Test that it's possible to run several block-stream operations
 194     # in parallel in the same snapshot chain
 195     def test_stream_parallel(self):
 196         self.assert_no_active_block_jobs()
 197
 198         # Check that the maps don't match before the streaming operations
 199         for i in range(2, self.num_imgs, 2):
 200             self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]),
 201                                 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]),
 202                                 'image file map matches backing file before streaming')
 203
 204         # Create all streaming jobs
 205         pending_jobs = []
 206         for i in range(2, self.num_imgs, 2):
 207             node_name = 'node%d' % i
 208             job_id = 'stream-%s' % node_name
 209             pending_jobs.append(job_id)
 210             result = self.vm.qmp('block-stream', device=node_name, job_id=job_id, base=self.imgs[i-2], speed=512*1024)
 211             self.assert_qmp(result, 'return', {})
 212
 213         # Wait for all jobs to be finished.
 214         while len(pending_jobs) > 0:
 215             for event in self.vm.get_qmp_events(wait=True):
 216                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 217                     job_id = self.dictpath(event, 'data/device')
 218                     self.assertTrue(job_id in pending_jobs)
 219                     self.assert_qmp_absent(event, 'data/error')
 220                     pending_jobs.remove(job_id)
 221
 222         self.assert_no_active_block_jobs()
 223         self.vm.shutdown()
 224
 225         # Check that all maps match now
 226         for i in range(2, self.num_imgs, 2):
 227             self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]),
 228                              qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]),
 229                              'image file map does not match backing file after streaming')
 230
 231     # Test that it's not possible to perform two block-stream
 232     # operations if there are nodes involved in both.
 233     def test_overlapping_1(self):
 234         self.assert_no_active_block_jobs()
 235
 236         # Set a speed limit to make sure that this job blocks the rest
 237         result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4', base=self.imgs[1], speed=1024*1024)
 238         self.assert_qmp(result, 'return', {})
 239
 240         result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2])
 241         self.assert_qmp(result, 'error/class', 'GenericError')
 242
 243         result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2])
 244         self.assert_qmp(result, 'error/class', 'GenericError')
 245
 246         result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4-v2')
 247         self.assert_qmp(result, 'error/class', 'GenericError')
 248
 249         # block-commit should also fail if it touches nodes used by the stream job
 250         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4')
 251         self.assert_qmp(result, 'error/class', 'GenericError')
 252
 253         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1')
 254         self.assert_qmp(result, 'error/class', 'GenericError')
 255
 256         # This fails because it needs to modify the backing string in node2, which is blocked
 257         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[0], top=self.imgs[1], job_id='commit-node0')
 258         self.assert_qmp(result, 'error/class', 'GenericError')
 259
 260         self.wait_until_completed(drive='stream-node4')
 261         self.assert_no_active_block_jobs()
 262
 263     # Similar to test_overlapping_1, but with block-commit
 264     # blocking the other jobs
 265     def test_overlapping_2(self):
 266         self.assertLessEqual(9, self.num_imgs)
 267         self.assert_no_active_block_jobs()
 268
 269         # Set a speed limit to make sure that this job blocks the rest
 270         result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[5], base=self.imgs[3], job_id='commit-node3', speed=1024*1024)
 271         self.assert_qmp(result, 'return', {})
 272
 273         result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3')
 274         self.assert_qmp(result, 'error/class', 'GenericError')
 275
 276         result = self.vm.qmp('block-stream', device='node6', base=self.imgs[2], job_id='stream-node6')
 277         self.assert_qmp(result, 'error/class', 'GenericError')
 278
 279         result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], job_id='stream-node4')
 280         self.assert_qmp(result, 'error/class', 'GenericError')
 281
 282         result = self.vm.qmp('block-stream', device='node6', base=self.imgs[4], job_id='stream-node6-v2')
 283         self.assert_qmp(result, 'error/class', 'GenericError')
 284
 285         # This fails because block-commit needs to block node6, the overlay of the 'top' image
 286         result = self.vm.qmp('block-stream', device='node7', base=self.imgs[5], job_id='stream-node6-v3')
 287         self.assert_qmp(result, 'error/class', 'GenericError')
 288
 289         # This fails because block-commit currently blocks the active layer even if it's not used
 290         result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0')
 291         self.assert_qmp(result, 'error/class', 'GenericError')
 292
 293         self.wait_until_completed(drive='commit-node3')
 294
 295     # Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter.
 296     # Internally this uses a mirror block job, hence the separate test case.
 297     def test_overlapping_3(self):
 298         self.assertLessEqual(8, self.num_imgs)
 299         self.assert_no_active_block_jobs()
 300
 301         # Set a speed limit to make sure that this job blocks the rest
 302         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024)
 303         self.assert_qmp(result, 'return', {})
 304
 305         result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6')
 306         self.assert_qmp(result, 'error/class', 'GenericError')
 307
 308         event = self.vm.get_qmp_event(wait=True)
 309         self.assertEqual(event['event'], 'BLOCK_JOB_READY')
 310         self.assert_qmp(event, 'data/device', 'commit-drive0')
 311         self.assert_qmp(event, 'data/type', 'commit')
 312         self.assert_qmp_absent(event, 'data/error')
 313
 314         result = self.vm.qmp('block-job-complete', device='commit-drive0')
 315         self.assert_qmp(result, 'return', {})
 316
 317         self.wait_until_completed(drive='commit-drive0')
 318         self.assert_no_active_block_jobs()
 319
 320 class TestSmallerBackingFile(iotests.QMPTestCase):
 321     backing_len = 1 * 1024 * 1024 # MB
 322     image_len = 2 * backing_len
 323
 324     def setUp(self):
 325         iotests.create_image(backing_img, self.backing_len)
 326         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len))
 327         self.vm = iotests.VM().add_drive(test_img)
 328         self.vm.launch()
 329
 330     # If this hangs, then you are missing a fix to complete streaming when the
 331     # end of the backing file is reached.
 332     def test_stream(self):
 333         self.assert_no_active_block_jobs()
 334
 335         result = self.vm.qmp('block-stream', device='drive0')
 336         self.assert_qmp(result, 'return', {})
 337
 338         self.wait_until_completed()
 339
 340         self.assert_no_active_block_jobs()
 341         self.vm.shutdown()
 342
 343 class TestErrors(iotests.QMPTestCase):
 344     image_len = 2 * 1024 * 1024 # MB
 345
 346     # this should match STREAM_BUFFER_SIZE/512 in block/stream.c
 347     STREAM_BUFFER_SIZE = 512 * 1024
 348
 349     def create_blkdebug_file(self, name, event, errno):
 350         file = open(name, 'w')
 351         file.write('''
 352 [inject-error]
 353 state = "1"
 354 event = "%s"
 355 errno = "%d"
 356 immediately = "off"
 357 once = "on"
 358 sector = "%d"
 359
 360 [set-state]
 361 state = "1"
 362 event = "%s"
 363 new_state = "2"
 364
 365 [set-state]
 366 state = "2"
 367 event = "%s"
 368 new_state = "1"
 369 ''' % (event, errno, self.STREAM_BUFFER_SIZE / 512, event, event))
 370         file.close()
 371
 372 class TestEIO(TestErrors):
 373     def setUp(self):
 374         self.blkdebug_file = backing_img + ".blkdebug"
 375         iotests.create_image(backing_img, TestErrors.image_len)
 376         self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5)
 377         qemu_img('create', '-f', iotests.imgfmt,
 378                  '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw'
 379                        % (self.blkdebug_file, backing_img),
 380                  test_img)
 381         self.vm = iotests.VM().add_drive(test_img)
 382         self.vm.launch()
 383
 384     def tearDown(self):
 385         self.vm.shutdown()
 386         os.remove(test_img)
 387         os.remove(backing_img)
 388         os.remove(self.blkdebug_file)
 389
 390     def test_report(self):
 391         self.assert_no_active_block_jobs()
 392
 393         result = self.vm.qmp('block-stream', device='drive0')
 394         self.assert_qmp(result, 'return', {})
 395
 396         completed = False
 397         error = False
 398         while not completed:
 399             for event in self.vm.get_qmp_events(wait=True):
 400                 if event['event'] == 'BLOCK_JOB_ERROR':
 401                     self.assert_qmp(event, 'data/device', 'drive0')
 402                     self.assert_qmp(event, 'data/operation', 'read')
 403                     error = True
 404                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 405                     self.assertTrue(error, 'job completed unexpectedly')
 406                     self.assert_qmp(event, 'data/type', 'stream')
 407                     self.assert_qmp(event, 'data/device', 'drive0')
 408                     self.assert_qmp(event, 'data/error', 'Input/output error')
 409                     self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE)
 410                     self.assert_qmp(event, 'data/len', self.image_len)
 411                     completed = True
 412
 413         self.assert_no_active_block_jobs()
 414         self.vm.shutdown()
 415
 416     def test_ignore(self):
 417         self.assert_no_active_block_jobs()
 418
 419         result = self.vm.qmp('block-stream', device='drive0', on_error='ignore')
 420         self.assert_qmp(result, 'return', {})
 421
 422         error = False
 423         completed = False
 424         while not completed:
 425             for event in self.vm.get_qmp_events(wait=True):
 426                 if event['event'] == 'BLOCK_JOB_ERROR':
 427                     self.assert_qmp(event, 'data/device', 'drive0')
 428                     self.assert_qmp(event, 'data/operation', 'read')
 429                     result = self.vm.qmp('query-block-jobs')
 430                     self.assert_qmp(result, 'return[0]/paused', False)
 431                     error = True
 432                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 433                     self.assertTrue(error, 'job completed unexpectedly')
 434                     self.assert_qmp(event, 'data/type', 'stream')
 435                     self.assert_qmp(event, 'data/device', 'drive0')
 436                     self.assert_qmp(event, 'data/error', 'Input/output error')
 437                     self.assert_qmp(event, 'data/offset', self.image_len)
 438                     self.assert_qmp(event, 'data/len', self.image_len)
 439                     completed = True
 440
 441         self.assert_no_active_block_jobs()
 442         self.vm.shutdown()
 443
 444     def test_stop(self):
 445         self.assert_no_active_block_jobs()
 446
 447         result = self.vm.qmp('block-stream', device='drive0', on_error='stop')
 448         self.assert_qmp(result, 'return', {})
 449
 450         error = False
 451         completed = False
 452         while not completed:
 453             for event in self.vm.get_qmp_events(wait=True):
 454                 if event['event'] == 'BLOCK_JOB_ERROR':
 455                     error = True
 456                     self.assert_qmp(event, 'data/device', 'drive0')
 457                     self.assert_qmp(event, 'data/operation', 'read')
 458
 459                     result = self.vm.qmp('query-block-jobs')
 460                     self.assert_qmp(result, 'return[0]/paused', True)
 461                     self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE)
 462                     self.assert_qmp(result, 'return[0]/io-status', 'failed')
 463
 464                     result = self.vm.qmp('block-job-resume', device='drive0')
 465                     self.assert_qmp(result, 'return', {})
 466
 467                     result = self.vm.qmp('query-block-jobs')
 468                     if result == {'return': []}:
 469                         # Race; likely already finished. Check.
 470                         continue
 471                     self.assert_qmp(result, 'return[0]/paused', False)
 472                     self.assert_qmp(result, 'return[0]/io-status', 'ok')
 473                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 474                     self.assertTrue(error, 'job completed unexpectedly')
 475                     self.assert_qmp(event, 'data/type', 'stream')
 476                     self.assert_qmp(event, 'data/device', 'drive0')
 477                     self.assert_qmp_absent(event, 'data/error')
 478                     self.assert_qmp(event, 'data/offset', self.image_len)
 479                     self.assert_qmp(event, 'data/len', self.image_len)
 480                     completed = True
 481
 482         self.assert_no_active_block_jobs()
 483         self.vm.shutdown()
 484
 485     def test_enospc(self):
 486         self.assert_no_active_block_jobs()
 487
 488         result = self.vm.qmp('block-stream', device='drive0', on_error='enospc')
 489         self.assert_qmp(result, 'return', {})
 490
 491         completed = False
 492         error = False
 493         while not completed:
 494             for event in self.vm.get_qmp_events(wait=True):
 495                 if event['event'] == 'BLOCK_JOB_ERROR':
 496                     self.assert_qmp(event, 'data/device', 'drive0')
 497                     self.assert_qmp(event, 'data/operation', 'read')
 498                     error = True
 499                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 500                     self.assertTrue(error, 'job completed unexpectedly')
 501                     self.assert_qmp(event, 'data/type', 'stream')
 502                     self.assert_qmp(event, 'data/device', 'drive0')
 503                     self.assert_qmp(event, 'data/error', 'Input/output error')
 504                     self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE)
 505                     self.assert_qmp(event, 'data/len', self.image_len)
 506                     completed = True
 507
 508         self.assert_no_active_block_jobs()
 509         self.vm.shutdown()
 510
 511 class TestENOSPC(TestErrors):
 512     def setUp(self):
 513         self.blkdebug_file = backing_img + ".blkdebug"
 514         iotests.create_image(backing_img, TestErrors.image_len)
 515         self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28)
 516         qemu_img('create', '-f', iotests.imgfmt,
 517                  '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw'
 518                        % (self.blkdebug_file, backing_img),
 519                  test_img)
 520         self.vm = iotests.VM().add_drive(test_img)
 521         self.vm.launch()
 522
 523     def tearDown(self):
 524         self.vm.shutdown()
 525         os.remove(test_img)
 526         os.remove(backing_img)
 527         os.remove(self.blkdebug_file)
 528
 529     def test_enospc(self):
 530         self.assert_no_active_block_jobs()
 531
 532         result = self.vm.qmp('block-stream', device='drive0', on_error='enospc')
 533         self.assert_qmp(result, 'return', {})
 534
 535         error = False
 536         completed = False
 537         while not completed:
 538             for event in self.vm.get_qmp_events(wait=True):
 539                 if event['event'] == 'BLOCK_JOB_ERROR':
 540                     self.assert_qmp(event, 'data/device', 'drive0')
 541                     self.assert_qmp(event, 'data/operation', 'read')
 542
 543                     result = self.vm.qmp('query-block-jobs')
 544                     self.assert_qmp(result, 'return[0]/paused', True)
 545                     self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE)
 546                     self.assert_qmp(result, 'return[0]/io-status', 'nospace')
 547
 548                     result = self.vm.qmp('block-job-resume', device='drive0')
 549                     self.assert_qmp(result, 'return', {})
 550
 551                     result = self.vm.qmp('query-block-jobs')
 552                     self.assert_qmp(result, 'return[0]/paused', False)
 553                     self.assert_qmp(result, 'return[0]/io-status', 'ok')
 554                     error = True
 555                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 556                     self.assertTrue(error, 'job completed unexpectedly')
 557                     self.assert_qmp(event, 'data/type', 'stream')
 558                     self.assert_qmp(event, 'data/device', 'drive0')
 559                     self.assert_qmp_absent(event, 'data/error')
 560                     self.assert_qmp(event, 'data/offset', self.image_len)
 561                     self.assert_qmp(event, 'data/len', self.image_len)
 562                     completed = True
 563
 564         self.assert_no_active_block_jobs()
 565         self.vm.shutdown()
 566
 567 class TestStreamStop(iotests.QMPTestCase):
 568     image_len = 8 * 1024 * 1024 * 1024 # GB
 569
 570     def setUp(self):
 571         qemu_img('create', backing_img, str(TestStreamStop.image_len))
 572         qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img)
 573         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 574         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img)
 575         self.vm = iotests.VM().add_drive("blkdebug::" + test_img)
 576         self.vm.launch()
 577
 578     def tearDown(self):
 579         self.vm.shutdown()
 580         os.remove(test_img)
 581         os.remove(backing_img)
 582
 583     def test_stream_stop(self):
 584         self.assert_no_active_block_jobs()
 585
 586         self.vm.pause_drive('drive0')
 587         result = self.vm.qmp('block-stream', device='drive0')
 588         self.assert_qmp(result, 'return', {})
 589
 590         time.sleep(0.1)
 591         events = self.vm.get_qmp_events(wait=False)
 592         self.assertEqual(events, [], 'unexpected QMP event: %s' % events)
 593
 594         self.cancel_and_wait(resume=True)
 595
 596 class TestSetSpeed(iotests.QMPTestCase):
 597     image_len = 80 * 1024 * 1024 # MB
 598
 599     def setUp(self):
 600         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 601         qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img)
 602         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 603         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img)
 604         self.vm = iotests.VM().add_drive('blkdebug::' + test_img)
 605         self.vm.launch()
 606
 607     def tearDown(self):
 608         self.vm.shutdown()
 609         os.remove(test_img)
 610         os.remove(backing_img)
 611
 612     # This is a short performance test which is not run by default.
 613     # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput"
 614     def perf_test_throughput(self):
 615         self.assert_no_active_block_jobs()
 616
 617         result = self.vm.qmp('block-stream', device='drive0')
 618         self.assert_qmp(result, 'return', {})
 619
 620         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 621         self.assert_qmp(result, 'return', {})
 622
 623         self.wait_until_completed()
 624
 625         self.assert_no_active_block_jobs()
 626
 627     def test_set_speed(self):
 628         self.assert_no_active_block_jobs()
 629
 630         self.vm.pause_drive('drive0')
 631         result = self.vm.qmp('block-stream', device='drive0')
 632         self.assert_qmp(result, 'return', {})
 633
 634         # Default speed is 0
 635         result = self.vm.qmp('query-block-jobs')
 636         self.assert_qmp(result, 'return[0]/device', 'drive0')
 637         self.assert_qmp(result, 'return[0]/speed', 0)
 638
 639         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 640         self.assert_qmp(result, 'return', {})
 641
 642         # Ensure the speed we set was accepted
 643         result = self.vm.qmp('query-block-jobs')
 644         self.assert_qmp(result, 'return[0]/device', 'drive0')
 645         self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024)
 646
 647         self.cancel_and_wait(resume=True)
 648         self.vm.pause_drive('drive0')
 649
 650         # Check setting speed in block-stream works
 651         result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024)
 652         self.assert_qmp(result, 'return', {})
 653
 654         result = self.vm.qmp('query-block-jobs')
 655         self.assert_qmp(result, 'return[0]/device', 'drive0')
 656         self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024)
 657
 658         self.cancel_and_wait(resume=True)
 659
 660     def test_set_speed_invalid(self):
 661         self.assert_no_active_block_jobs()
 662
 663         result = self.vm.qmp('block-stream', device='drive0', speed=-1)
 664         self.assert_qmp(result, 'error/class', 'GenericError')
 665
 666         self.assert_no_active_block_jobs()
 667
 668         result = self.vm.qmp('block-stream', device='drive0')
 669         self.assert_qmp(result, 'return', {})
 670
 671         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1)
 672         self.assert_qmp(result, 'error/class', 'GenericError')
 673
 674         self.cancel_and_wait()
 675
 676 if __name__ == '__main__':
 677     iotests.main(supported_fmts=['qcow2', 'qed'])