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', '-rU', '-c', 'map', backing_img),
  67                             qemu_io('-f', iotests.imgfmt, '-rU', '-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, '-rU', '-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     def test_job_id_missing(self):
 151         result = self.vm.qmp('block-stream', device='mid')
 152         self.assert_qmp(result, 'error/class', 'GenericError')
 153
 154
 155 class TestParallelOps(iotests.QMPTestCase):
 156     num_ops = 4 # Number of parallel block-stream operations
 157     num_imgs = num_ops * 2 + 1
 158     image_len = num_ops * 1024 * 1024
 159     imgs = []
 160
 161     def setUp(self):
 162         opts = []
 163         self.imgs = []
 164
 165         # Initialize file names and command-line options
 166         for i in range(self.num_imgs):
 167             img_depth = self.num_imgs - i - 1
 168             opts.append("backing." * img_depth + "node-name=node%d" % i)
 169             self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i))
 170
 171         # Create all images
 172         iotests.create_image(self.imgs[0], self.image_len)
 173         for i in range(1, self.num_imgs):
 174             qemu_img('create', '-f', iotests.imgfmt,
 175                      '-o', 'backing_file=%s' % self.imgs[i-1], self.imgs[i])
 176
 177         # Put data into the images we are copying data from
 178         for i in range(self.num_imgs / 2):
 179             img_index = i * 2 + 1
 180             # Alternate between 512k and 1M.
 181             # This way jobs will not finish in the same order they were created
 182             num_kb = 512 + 512 * (i % 2)
 183             qemu_io('-f', iotests.imgfmt,
 184                     '-c', 'write -P %d %d %d' % (i, i*1024*1024, num_kb * 1024),
 185                     self.imgs[img_index])
 186
 187         # Attach the drive to the VM
 188         self.vm = iotests.VM()
 189         self.vm.add_drive(self.imgs[-1], ','.join(opts))
 190         self.vm.launch()
 191
 192     def tearDown(self):
 193         self.vm.shutdown()
 194         for img in self.imgs:
 195             os.remove(img)
 196
 197     # Test that it's possible to run several block-stream operations
 198     # in parallel in the same snapshot chain
 199     def test_stream_parallel(self):
 200         self.assert_no_active_block_jobs()
 201
 202         # Check that the maps don't match before the streaming operations
 203         for i in range(2, self.num_imgs, 2):
 204             self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i]),
 205                                 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]),
 206                                 'image file map matches backing file before streaming')
 207
 208         # Create all streaming jobs
 209         pending_jobs = []
 210         for i in range(2, self.num_imgs, 2):
 211             node_name = 'node%d' % i
 212             job_id = 'stream-%s' % node_name
 213             pending_jobs.append(job_id)
 214             result = self.vm.qmp('block-stream', device=node_name, job_id=job_id, base=self.imgs[i-2], speed=512*1024)
 215             self.assert_qmp(result, 'return', {})
 216
 217         # Wait for all jobs to be finished.
 218         while len(pending_jobs) > 0:
 219             for event in self.vm.get_qmp_events(wait=True):
 220                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 221                     job_id = self.dictpath(event, 'data/device')
 222                     self.assertTrue(job_id in pending_jobs)
 223                     self.assert_qmp_absent(event, 'data/error')
 224                     pending_jobs.remove(job_id)
 225
 226         self.assert_no_active_block_jobs()
 227         self.vm.shutdown()
 228
 229         # Check that all maps match now
 230         for i in range(2, self.num_imgs, 2):
 231             self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]),
 232                              qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]),
 233                              'image file map does not match backing file after streaming')
 234
 235     # Test that it's not possible to perform two block-stream
 236     # operations if there are nodes involved in both.
 237     def test_overlapping_1(self):
 238         self.assert_no_active_block_jobs()
 239
 240         # Set a speed limit to make sure that this job blocks the rest
 241         result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4', base=self.imgs[1], speed=1024*1024)
 242         self.assert_qmp(result, 'return', {})
 243
 244         result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2])
 245         self.assert_qmp(result, 'error/class', 'GenericError')
 246
 247         result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2])
 248         self.assert_qmp(result, 'error/class', 'GenericError')
 249
 250         result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4-v2')
 251         self.assert_qmp(result, 'error/class', 'GenericError')
 252
 253         # block-commit should also fail if it touches nodes used by the stream job
 254         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4')
 255         self.assert_qmp(result, 'error/class', 'GenericError')
 256
 257         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1')
 258         self.assert_qmp(result, 'error/class', 'GenericError')
 259
 260         # This fails because it needs to modify the backing string in node2, which is blocked
 261         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[0], top=self.imgs[1], job_id='commit-node0')
 262         self.assert_qmp(result, 'error/class', 'GenericError')
 263
 264         self.wait_until_completed(drive='stream-node4')
 265         self.assert_no_active_block_jobs()
 266
 267     # Similar to test_overlapping_1, but with block-commit
 268     # blocking the other jobs
 269     def test_overlapping_2(self):
 270         self.assertLessEqual(9, self.num_imgs)
 271         self.assert_no_active_block_jobs()
 272
 273         # Set a speed limit to make sure that this job blocks the rest
 274         result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[5], base=self.imgs[3], job_id='commit-node3', speed=1024*1024)
 275         self.assert_qmp(result, 'return', {})
 276
 277         result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3')
 278         self.assert_qmp(result, 'error/class', 'GenericError')
 279
 280         result = self.vm.qmp('block-stream', device='node6', base=self.imgs[2], job_id='stream-node6')
 281         self.assert_qmp(result, 'error/class', 'GenericError')
 282
 283         result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], job_id='stream-node4')
 284         self.assert_qmp(result, 'error/class', 'GenericError')
 285
 286         result = self.vm.qmp('block-stream', device='node6', base=self.imgs[4], job_id='stream-node6-v2')
 287         self.assert_qmp(result, 'error/class', 'GenericError')
 288
 289         # This fails because block-commit needs to block node6, the overlay of the 'top' image
 290         result = self.vm.qmp('block-stream', device='node7', base=self.imgs[5], job_id='stream-node6-v3')
 291         self.assert_qmp(result, 'error/class', 'GenericError')
 292
 293         # This fails because block-commit currently blocks the active layer even if it's not used
 294         result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0')
 295         self.assert_qmp(result, 'error/class', 'GenericError')
 296
 297         self.wait_until_completed(drive='commit-node3')
 298
 299     # Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter.
 300     # Internally this uses a mirror block job, hence the separate test case.
 301     def test_overlapping_3(self):
 302         self.assertLessEqual(8, self.num_imgs)
 303         self.assert_no_active_block_jobs()
 304
 305         # Set a speed limit to make sure that this job blocks the rest
 306         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024)
 307         self.assert_qmp(result, 'return', {})
 308
 309         result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6')
 310         self.assert_qmp(result, 'error/class', 'GenericError')
 311
 312         event = self.vm.get_qmp_event(wait=True)
 313         self.assertEqual(event['event'], 'BLOCK_JOB_READY')
 314         self.assert_qmp(event, 'data/device', 'commit-drive0')
 315         self.assert_qmp(event, 'data/type', 'commit')
 316         self.assert_qmp_absent(event, 'data/error')
 317
 318         result = self.vm.qmp('block-job-complete', device='commit-drive0')
 319         self.assert_qmp(result, 'return', {})
 320
 321         self.wait_until_completed(drive='commit-drive0')
 322
 323     # Test a block-stream and a block-commit job in parallel
 324     def test_stream_commit(self):
 325         self.assertLessEqual(8, self.num_imgs)
 326         self.assert_no_active_block_jobs()
 327
 328         # Stream from node0 into node2
 329         result = self.vm.qmp('block-stream', device='node2', job_id='node2')
 330         self.assert_qmp(result, 'return', {})
 331
 332         # Commit from the active layer into node3
 333         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3])
 334         self.assert_qmp(result, 'return', {})
 335
 336         # Wait for all jobs to be finished.
 337         pending_jobs = ['node2', 'drive0']
 338         while len(pending_jobs) > 0:
 339             for event in self.vm.get_qmp_events(wait=True):
 340                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 341                     node_name = self.dictpath(event, 'data/device')
 342                     self.assertTrue(node_name in pending_jobs)
 343                     self.assert_qmp_absent(event, 'data/error')
 344                     pending_jobs.remove(node_name)
 345                 if event['event'] == 'BLOCK_JOB_READY':
 346                     self.assert_qmp(event, 'data/device', 'drive0')
 347                     self.assert_qmp(event, 'data/type', 'commit')
 348                     self.assert_qmp_absent(event, 'data/error')
 349                     self.assertTrue('drive0' in pending_jobs)
 350                     self.vm.qmp('block-job-complete', device='drive0')
 351
 352         self.assert_no_active_block_jobs()
 353
 354     # Test the base_node parameter
 355     def test_stream_base_node_name(self):
 356         self.assert_no_active_block_jobs()
 357
 358         self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]),
 359                             qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]),
 360                             'image file map matches backing file before streaming')
 361
 362         # Error: the base node does not exist
 363         result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream')
 364         self.assert_qmp(result, 'error/class', 'GenericError')
 365
 366         # Error: the base node is not a backing file of the top node
 367         result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream')
 368         self.assert_qmp(result, 'error/class', 'GenericError')
 369
 370         # Error: the base node is the same as the top node
 371         result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream')
 372         self.assert_qmp(result, 'error/class', 'GenericError')
 373
 374         # Error: cannot specify 'base' and 'base-node' at the same time
 375         result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream')
 376         self.assert_qmp(result, 'error/class', 'GenericError')
 377
 378         # Success: the base node is a backing file of the top node
 379         result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream')
 380         self.assert_qmp(result, 'return', {})
 381
 382         self.wait_until_completed(drive='stream')
 383
 384         self.assert_no_active_block_jobs()
 385         self.vm.shutdown()
 386
 387         self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]),
 388                          qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]),
 389                          'image file map matches backing file after streaming')
 390
 391 class TestQuorum(iotests.QMPTestCase):
 392     num_children = 3
 393     children = []
 394     backing = []
 395
 396     def setUp(self):
 397         opts = ['driver=quorum', 'vote-threshold=2']
 398
 399         # Initialize file names and command-line options
 400         for i in range(self.num_children):
 401             child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i)
 402             backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i)
 403             self.children.append(child_img)
 404             self.backing.append(backing_img)
 405             qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M')
 406             qemu_io('-f', iotests.imgfmt,
 407                     '-c', 'write -P 0x55 0 1024', backing_img)
 408             qemu_img('create', '-f', iotests.imgfmt,
 409                      '-o', 'backing_file=%s' % backing_img, child_img)
 410             opts.append("children.%d.file.filename=%s" % (i, child_img))
 411             opts.append("children.%d.node-name=node%d" % (i, i))
 412
 413         # Attach the drive to the VM
 414         self.vm = iotests.VM()
 415         self.vm.add_drive(path = None, opts = ','.join(opts))
 416         self.vm.launch()
 417
 418     def tearDown(self):
 419         self.vm.shutdown()
 420         for img in self.children:
 421             os.remove(img)
 422         for img in self.backing:
 423             os.remove(img)
 424
 425     def test_stream_quorum(self):
 426         if not iotests.supports_quorum():
 427             return
 428
 429         self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]),
 430                             qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]),
 431                             'image file map matches backing file before streaming')
 432
 433         self.assert_no_active_block_jobs()
 434
 435         result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0')
 436         self.assert_qmp(result, 'return', {})
 437
 438         self.wait_until_completed(drive='stream-node0')
 439
 440         self.assert_no_active_block_jobs()
 441         self.vm.shutdown()
 442
 443         self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]),
 444                          qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]),
 445                          'image file map does not match backing file after streaming')
 446
 447 class TestSmallerBackingFile(iotests.QMPTestCase):
 448     backing_len = 1 * 1024 * 1024 # MB
 449     image_len = 2 * backing_len
 450
 451     def setUp(self):
 452         iotests.create_image(backing_img, self.backing_len)
 453         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len))
 454         self.vm = iotests.VM().add_drive(test_img)
 455         self.vm.launch()
 456
 457     # If this hangs, then you are missing a fix to complete streaming when the
 458     # end of the backing file is reached.
 459     def test_stream(self):
 460         self.assert_no_active_block_jobs()
 461
 462         result = self.vm.qmp('block-stream', device='drive0')
 463         self.assert_qmp(result, 'return', {})
 464
 465         self.wait_until_completed()
 466
 467         self.assert_no_active_block_jobs()
 468         self.vm.shutdown()
 469
 470 class TestErrors(iotests.QMPTestCase):
 471     image_len = 2 * 1024 * 1024 # MB
 472
 473     # this should match STREAM_BUFFER_SIZE/512 in block/stream.c
 474     STREAM_BUFFER_SIZE = 512 * 1024
 475
 476     def create_blkdebug_file(self, name, event, errno):
 477         file = open(name, 'w')
 478         file.write('''
 479 [inject-error]
 480 state = "1"
 481 event = "%s"
 482 errno = "%d"
 483 immediately = "off"
 484 once = "on"
 485 sector = "%d"
 486
 487 [set-state]
 488 state = "1"
 489 event = "%s"
 490 new_state = "2"
 491
 492 [set-state]
 493 state = "2"
 494 event = "%s"
 495 new_state = "1"
 496 ''' % (event, errno, self.STREAM_BUFFER_SIZE / 512, event, event))
 497         file.close()
 498
 499 class TestEIO(TestErrors):
 500     def setUp(self):
 501         self.blkdebug_file = backing_img + ".blkdebug"
 502         iotests.create_image(backing_img, TestErrors.image_len)
 503         self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5)
 504         qemu_img('create', '-f', iotests.imgfmt,
 505                  '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw'
 506                        % (self.blkdebug_file, backing_img),
 507                  test_img)
 508         self.vm = iotests.VM().add_drive(test_img)
 509         self.vm.launch()
 510
 511     def tearDown(self):
 512         self.vm.shutdown()
 513         os.remove(test_img)
 514         os.remove(backing_img)
 515         os.remove(self.blkdebug_file)
 516
 517     def test_report(self):
 518         self.assert_no_active_block_jobs()
 519
 520         result = self.vm.qmp('block-stream', device='drive0')
 521         self.assert_qmp(result, 'return', {})
 522
 523         completed = False
 524         error = False
 525         while not completed:
 526             for event in self.vm.get_qmp_events(wait=True):
 527                 if event['event'] == 'BLOCK_JOB_ERROR':
 528                     self.assert_qmp(event, 'data/device', 'drive0')
 529                     self.assert_qmp(event, 'data/operation', 'read')
 530                     error = True
 531                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 532                     self.assertTrue(error, 'job completed unexpectedly')
 533                     self.assert_qmp(event, 'data/type', 'stream')
 534                     self.assert_qmp(event, 'data/device', 'drive0')
 535                     self.assert_qmp(event, 'data/error', 'Input/output error')
 536                     self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE)
 537                     self.assert_qmp(event, 'data/len', self.image_len)
 538                     completed = True
 539
 540         self.assert_no_active_block_jobs()
 541         self.vm.shutdown()
 542
 543     def test_ignore(self):
 544         self.assert_no_active_block_jobs()
 545
 546         result = self.vm.qmp('block-stream', device='drive0', on_error='ignore')
 547         self.assert_qmp(result, 'return', {})
 548
 549         error = False
 550         completed = False
 551         while not completed:
 552             for event in self.vm.get_qmp_events(wait=True):
 553                 if event['event'] == 'BLOCK_JOB_ERROR':
 554                     error = True
 555                     self.assert_qmp(event, 'data/device', 'drive0')
 556                     self.assert_qmp(event, 'data/operation', 'read')
 557                     result = self.vm.qmp('query-block-jobs')
 558                     if result == {'return': []}:
 559                         # Job finished too quickly
 560                         continue
 561                     self.assert_qmp(result, 'return[0]/paused', False)
 562                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 563                     self.assertTrue(error, 'job completed unexpectedly')
 564                     self.assert_qmp(event, 'data/type', 'stream')
 565                     self.assert_qmp(event, 'data/device', 'drive0')
 566                     self.assert_qmp(event, 'data/error', 'Input/output error')
 567                     self.assert_qmp(event, 'data/offset', self.image_len)
 568                     self.assert_qmp(event, 'data/len', self.image_len)
 569                     completed = True
 570
 571         self.assert_no_active_block_jobs()
 572         self.vm.shutdown()
 573
 574     def test_stop(self):
 575         self.assert_no_active_block_jobs()
 576
 577         result = self.vm.qmp('block-stream', device='drive0', on_error='stop')
 578         self.assert_qmp(result, 'return', {})
 579
 580         error = False
 581         completed = False
 582         while not completed:
 583             for event in self.vm.get_qmp_events(wait=True):
 584                 if event['event'] == 'BLOCK_JOB_ERROR':
 585                     error = True
 586                     self.assert_qmp(event, 'data/device', 'drive0')
 587                     self.assert_qmp(event, 'data/operation', 'read')
 588
 589                     result = self.vm.qmp('query-block-jobs')
 590                     self.assert_qmp(result, 'return[0]/paused', True)
 591                     self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE)
 592                     self.assert_qmp(result, 'return[0]/io-status', 'failed')
 593
 594                     result = self.vm.qmp('block-job-resume', device='drive0')
 595                     self.assert_qmp(result, 'return', {})
 596
 597                     result = self.vm.qmp('query-block-jobs')
 598                     if result == {'return': []}:
 599                         # Race; likely already finished. Check.
 600                         continue
 601                     self.assert_qmp(result, 'return[0]/paused', False)
 602                     self.assert_qmp(result, 'return[0]/io-status', 'ok')
 603                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 604                     self.assertTrue(error, 'job completed unexpectedly')
 605                     self.assert_qmp(event, 'data/type', 'stream')
 606                     self.assert_qmp(event, 'data/device', 'drive0')
 607                     self.assert_qmp_absent(event, 'data/error')
 608                     self.assert_qmp(event, 'data/offset', self.image_len)
 609                     self.assert_qmp(event, 'data/len', self.image_len)
 610                     completed = True
 611
 612         self.assert_no_active_block_jobs()
 613         self.vm.shutdown()
 614
 615     def test_enospc(self):
 616         self.assert_no_active_block_jobs()
 617
 618         result = self.vm.qmp('block-stream', device='drive0', on_error='enospc')
 619         self.assert_qmp(result, 'return', {})
 620
 621         completed = False
 622         error = False
 623         while not completed:
 624             for event in self.vm.get_qmp_events(wait=True):
 625                 if event['event'] == 'BLOCK_JOB_ERROR':
 626                     self.assert_qmp(event, 'data/device', 'drive0')
 627                     self.assert_qmp(event, 'data/operation', 'read')
 628                     error = True
 629                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 630                     self.assertTrue(error, 'job completed unexpectedly')
 631                     self.assert_qmp(event, 'data/type', 'stream')
 632                     self.assert_qmp(event, 'data/device', 'drive0')
 633                     self.assert_qmp(event, 'data/error', 'Input/output error')
 634                     self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE)
 635                     self.assert_qmp(event, 'data/len', self.image_len)
 636                     completed = True
 637
 638         self.assert_no_active_block_jobs()
 639         self.vm.shutdown()
 640
 641 class TestENOSPC(TestErrors):
 642     def setUp(self):
 643         self.blkdebug_file = backing_img + ".blkdebug"
 644         iotests.create_image(backing_img, TestErrors.image_len)
 645         self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28)
 646         qemu_img('create', '-f', iotests.imgfmt,
 647                  '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw'
 648                        % (self.blkdebug_file, backing_img),
 649                  test_img)
 650         self.vm = iotests.VM().add_drive(test_img)
 651         self.vm.launch()
 652
 653     def tearDown(self):
 654         self.vm.shutdown()
 655         os.remove(test_img)
 656         os.remove(backing_img)
 657         os.remove(self.blkdebug_file)
 658
 659     def test_enospc(self):
 660         self.assert_no_active_block_jobs()
 661
 662         result = self.vm.qmp('block-stream', device='drive0', on_error='enospc')
 663         self.assert_qmp(result, 'return', {})
 664
 665         error = False
 666         completed = False
 667         while not completed:
 668             for event in self.vm.get_qmp_events(wait=True):
 669                 if event['event'] == 'BLOCK_JOB_ERROR':
 670                     self.assert_qmp(event, 'data/device', 'drive0')
 671                     self.assert_qmp(event, 'data/operation', 'read')
 672
 673                     result = self.vm.qmp('query-block-jobs')
 674                     self.assert_qmp(result, 'return[0]/paused', True)
 675                     self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE)
 676                     self.assert_qmp(result, 'return[0]/io-status', 'nospace')
 677
 678                     result = self.vm.qmp('block-job-resume', device='drive0')
 679                     self.assert_qmp(result, 'return', {})
 680
 681                     result = self.vm.qmp('query-block-jobs')
 682                     self.assert_qmp(result, 'return[0]/paused', False)
 683                     self.assert_qmp(result, 'return[0]/io-status', 'ok')
 684                     error = True
 685                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 686                     self.assertTrue(error, 'job completed unexpectedly')
 687                     self.assert_qmp(event, 'data/type', 'stream')
 688                     self.assert_qmp(event, 'data/device', 'drive0')
 689                     self.assert_qmp_absent(event, 'data/error')
 690                     self.assert_qmp(event, 'data/offset', self.image_len)
 691                     self.assert_qmp(event, 'data/len', self.image_len)
 692                     completed = True
 693
 694         self.assert_no_active_block_jobs()
 695         self.vm.shutdown()
 696
 697 class TestStreamStop(iotests.QMPTestCase):
 698     image_len = 8 * 1024 * 1024 * 1024 # GB
 699
 700     def setUp(self):
 701         qemu_img('create', backing_img, str(TestStreamStop.image_len))
 702         qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img)
 703         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 704         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img)
 705         self.vm = iotests.VM().add_drive("blkdebug::" + test_img)
 706         self.vm.launch()
 707
 708     def tearDown(self):
 709         self.vm.shutdown()
 710         os.remove(test_img)
 711         os.remove(backing_img)
 712
 713     def test_stream_stop(self):
 714         self.assert_no_active_block_jobs()
 715
 716         self.vm.pause_drive('drive0')
 717         result = self.vm.qmp('block-stream', device='drive0')
 718         self.assert_qmp(result, 'return', {})
 719
 720         time.sleep(0.1)
 721         events = self.vm.get_qmp_events(wait=False)
 722         self.assertEqual(events, [], 'unexpected QMP event: %s' % events)
 723
 724         self.cancel_and_wait(resume=True)
 725
 726 class TestSetSpeed(iotests.QMPTestCase):
 727     image_len = 80 * 1024 * 1024 # MB
 728
 729     def setUp(self):
 730         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 731         qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img)
 732         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 733         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img)
 734         self.vm = iotests.VM().add_drive('blkdebug::' + test_img)
 735         self.vm.launch()
 736
 737     def tearDown(self):
 738         self.vm.shutdown()
 739         os.remove(test_img)
 740         os.remove(backing_img)
 741
 742     # This is a short performance test which is not run by default.
 743     # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput"
 744     def perf_test_throughput(self):
 745         self.assert_no_active_block_jobs()
 746
 747         result = self.vm.qmp('block-stream', device='drive0')
 748         self.assert_qmp(result, 'return', {})
 749
 750         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 751         self.assert_qmp(result, 'return', {})
 752
 753         self.wait_until_completed()
 754
 755         self.assert_no_active_block_jobs()
 756
 757     def test_set_speed(self):
 758         self.assert_no_active_block_jobs()
 759
 760         self.vm.pause_drive('drive0')
 761         result = self.vm.qmp('block-stream', device='drive0')
 762         self.assert_qmp(result, 'return', {})
 763
 764         # Default speed is 0
 765         result = self.vm.qmp('query-block-jobs')
 766         self.assert_qmp(result, 'return[0]/device', 'drive0')
 767         self.assert_qmp(result, 'return[0]/speed', 0)
 768
 769         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 770         self.assert_qmp(result, 'return', {})
 771
 772         # Ensure the speed we set was accepted
 773         result = self.vm.qmp('query-block-jobs')
 774         self.assert_qmp(result, 'return[0]/device', 'drive0')
 775         self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024)
 776
 777         self.cancel_and_wait(resume=True)
 778         self.vm.pause_drive('drive0')
 779
 780         # Check setting speed in block-stream works
 781         result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024)
 782         self.assert_qmp(result, 'return', {})
 783
 784         result = self.vm.qmp('query-block-jobs')
 785         self.assert_qmp(result, 'return[0]/device', 'drive0')
 786         self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024)
 787
 788         self.cancel_and_wait(resume=True)
 789
 790     def test_set_speed_invalid(self):
 791         self.assert_no_active_block_jobs()
 792
 793         result = self.vm.qmp('block-stream', device='drive0', speed=-1)
 794         self.assert_qmp(result, 'error/class', 'GenericError')
 795
 796         self.assert_no_active_block_jobs()
 797
 798         result = self.vm.qmp('block-stream', device='drive0')
 799         self.assert_qmp(result, 'return', {})
 800
 801         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1)
 802         self.assert_qmp(result, 'error/class', 'GenericError')
 803
 804         self.cancel_and_wait()
 805
 806 if __name__ == '__main__':
 807     iotests.main(supported_fmts=['qcow2', 'qed'])