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         self.pause_job('drive0', wait=False)
  90         self.vm.resume_drive('drive0')
  91         self.pause_wait('drive0')
  92
  93         result = self.vm.qmp('query-block-jobs')
  94         offset = self.dictpath(result, 'return[0]/offset')
  95
  96         time.sleep(0.5)
  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.wait_until_completed()
 104
 105         self.assert_no_active_block_jobs()
 106         self.vm.shutdown()
 107
 108         self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img),
 109                          qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
 110                          'image file map does not match backing file after streaming')
 111
 112     def test_stream_no_op(self):
 113         self.assert_no_active_block_jobs()
 114
 115         # The image map is empty before the operation
 116         empty_map = qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', test_img)
 117
 118         # This is a no-op: no data should ever be copied from the base image
 119         result = self.vm.qmp('block-stream', device='drive0', base=mid_img)
 120         self.assert_qmp(result, 'return', {})
 121
 122         self.wait_until_completed()
 123
 124         self.assert_no_active_block_jobs()
 125         self.vm.shutdown()
 126
 127         self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
 128                          empty_map, 'image file map changed after a no-op')
 129
 130     def test_stream_partial(self):
 131         self.assert_no_active_block_jobs()
 132
 133         result = self.vm.qmp('block-stream', device='drive0', base=backing_img)
 134         self.assert_qmp(result, 'return', {})
 135
 136         self.wait_until_completed()
 137
 138         self.assert_no_active_block_jobs()
 139         self.vm.shutdown()
 140
 141         self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img),
 142                          qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img),
 143                          'image file map does not match backing file after streaming')
 144
 145     def test_device_not_found(self):
 146         result = self.vm.qmp('block-stream', device='nonexistent')
 147         self.assert_qmp(result, 'error/class', 'GenericError')
 148
 149     def test_job_id_missing(self):
 150         result = self.vm.qmp('block-stream', device='mid')
 151         self.assert_qmp(result, 'error/class', 'GenericError')
 152
 153
 154 class TestParallelOps(iotests.QMPTestCase):
 155     num_ops = 4 # Number of parallel block-stream operations
 156     num_imgs = num_ops * 2 + 1
 157     image_len = num_ops * 512 * 1024
 158     imgs = []
 159
 160     def setUp(self):
 161         opts = []
 162         self.imgs = []
 163
 164         # Initialize file names and command-line options
 165         for i in range(self.num_imgs):
 166             img_depth = self.num_imgs - i - 1
 167             opts.append("backing." * img_depth + "node-name=node%d" % i)
 168             self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i))
 169
 170         # Create all images
 171         iotests.create_image(self.imgs[0], self.image_len)
 172         for i in range(1, self.num_imgs):
 173             qemu_img('create', '-f', iotests.imgfmt,
 174                      '-o', 'backing_file=%s' % self.imgs[i-1], self.imgs[i])
 175
 176         # Put data into the images we are copying data from
 177         odd_img_indexes = [x for x in reversed(range(self.num_imgs)) if x % 2 == 1]
 178         for i in range(len(odd_img_indexes)):
 179             # Alternate between 256KB and 512KB.
 180             # This way jobs will not finish in the same order they were created
 181             num_kb = 256 + 256 * (i % 2)
 182             qemu_io('-f', iotests.imgfmt,
 183                     '-c', 'write -P 0xFF %dk %dk' % (i * 512, num_kb),
 184                     self.imgs[odd_img_indexes[i]])
 185
 186         # Attach the drive to the VM
 187         self.vm = iotests.VM()
 188         self.vm.add_drive(self.imgs[-1], ','.join(opts))
 189         self.vm.launch()
 190
 191     def tearDown(self):
 192         self.vm.shutdown()
 193         for img in self.imgs:
 194             os.remove(img)
 195
 196     # Test that it's possible to run several block-stream operations
 197     # in parallel in the same snapshot chain
 198     def test_stream_parallel(self):
 199         self.assert_no_active_block_jobs()
 200
 201         # Check that the maps don't match before the streaming operations
 202         for i in range(2, self.num_imgs, 2):
 203             self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i]),
 204                                 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]),
 205                                 'image file map matches backing file before streaming')
 206
 207         # Create all streaming jobs
 208         pending_jobs = []
 209         for i in range(2, self.num_imgs, 2):
 210             node_name = 'node%d' % i
 211             job_id = 'stream-%s' % node_name
 212             pending_jobs.append(job_id)
 213             result = self.vm.qmp('block-stream', device=node_name, job_id=job_id, base=self.imgs[i-2], speed=512*1024)
 214             self.assert_qmp(result, 'return', {})
 215
 216         # Wait for all jobs to be finished.
 217         while len(pending_jobs) > 0:
 218             for event in self.vm.get_qmp_events(wait=True):
 219                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 220                     job_id = self.dictpath(event, 'data/device')
 221                     self.assertTrue(job_id in pending_jobs)
 222                     self.assert_qmp_absent(event, 'data/error')
 223                     pending_jobs.remove(job_id)
 224
 225         self.assert_no_active_block_jobs()
 226         self.vm.shutdown()
 227
 228         # Check that all maps match now
 229         for i in range(2, self.num_imgs, 2):
 230             self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]),
 231                              qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]),
 232                              'image file map does not match backing file after streaming')
 233
 234     # Test that it's not possible to perform two block-stream
 235     # operations if there are nodes involved in both.
 236     def test_overlapping_1(self):
 237         self.assert_no_active_block_jobs()
 238
 239         # Set a speed limit to make sure that this job blocks the rest
 240         result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4', base=self.imgs[1], speed=1024*1024)
 241         self.assert_qmp(result, 'return', {})
 242
 243         result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2])
 244         self.assert_qmp(result, 'error/class', 'GenericError')
 245
 246         result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2])
 247         self.assert_qmp(result, 'error/class', 'GenericError')
 248
 249         result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4-v2')
 250         self.assert_qmp(result, 'error/class', 'GenericError')
 251
 252         # block-commit should also fail if it touches nodes used by the stream job
 253         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4')
 254         self.assert_qmp(result, 'error/class', 'GenericError')
 255
 256         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1')
 257         self.assert_qmp(result, 'error/class', 'GenericError')
 258
 259         # This fails because it needs to modify the backing string in node2, which is blocked
 260         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[0], top=self.imgs[1], job_id='commit-node0')
 261         self.assert_qmp(result, 'error/class', 'GenericError')
 262
 263         self.wait_until_completed(drive='stream-node4')
 264         self.assert_no_active_block_jobs()
 265
 266     # Similar to test_overlapping_1, but with block-commit
 267     # blocking the other jobs
 268     def test_overlapping_2(self):
 269         self.assertLessEqual(9, self.num_imgs)
 270         self.assert_no_active_block_jobs()
 271
 272         # Set a speed limit to make sure that this job blocks the rest
 273         result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[5], base=self.imgs[3], job_id='commit-node3', speed=1024*1024)
 274         self.assert_qmp(result, 'return', {})
 275
 276         result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3')
 277         self.assert_qmp(result, 'error/class', 'GenericError')
 278
 279         result = self.vm.qmp('block-stream', device='node6', base=self.imgs[2], job_id='stream-node6')
 280         self.assert_qmp(result, 'error/class', 'GenericError')
 281
 282         result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], job_id='stream-node4')
 283         self.assert_qmp(result, 'error/class', 'GenericError')
 284
 285         result = self.vm.qmp('block-stream', device='node6', base=self.imgs[4], job_id='stream-node6-v2')
 286         self.assert_qmp(result, 'error/class', 'GenericError')
 287
 288         # This fails because block-commit currently blocks the active layer even if it's not used
 289         result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0')
 290         self.assert_qmp(result, 'error/class', 'GenericError')
 291
 292         self.wait_until_completed(drive='commit-node3')
 293
 294     # Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter.
 295     # Internally this uses a mirror block job, hence the separate test case.
 296     def test_overlapping_3(self):
 297         self.assertLessEqual(8, self.num_imgs)
 298         self.assert_no_active_block_jobs()
 299
 300         # Set a speed limit to make sure that this job blocks the rest
 301         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024)
 302         self.assert_qmp(result, 'return', {})
 303
 304         result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6')
 305         self.assert_qmp(result, 'error/class', 'GenericError')
 306
 307         event = self.vm.event_wait(name='BLOCK_JOB_READY')
 308         self.assert_qmp(event, 'data/device', 'commit-drive0')
 309         self.assert_qmp(event, 'data/type', 'commit')
 310         self.assert_qmp_absent(event, 'data/error')
 311
 312         result = self.vm.qmp('block-job-complete', device='commit-drive0')
 313         self.assert_qmp(result, 'return', {})
 314
 315         self.wait_until_completed(drive='commit-drive0')
 316
 317     # Test a block-stream and a block-commit job in parallel
 318     # Here the stream job is supposed to finish quickly in order to reproduce
 319     # the scenario that triggers the bug fixed in 3d5d319e1221 and 1a63a907507
 320     def test_stream_commit_1(self):
 321         self.assertLessEqual(8, self.num_imgs)
 322         self.assert_no_active_block_jobs()
 323
 324         # Stream from node0 into node2
 325         result = self.vm.qmp('block-stream', device='node2', base_node='node0', job_id='node2')
 326         self.assert_qmp(result, 'return', {})
 327
 328         # Commit from the active layer into node3
 329         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3])
 330         self.assert_qmp(result, 'return', {})
 331
 332         # Wait for all jobs to be finished.
 333         pending_jobs = ['node2', 'drive0']
 334         while len(pending_jobs) > 0:
 335             for event in self.vm.get_qmp_events(wait=True):
 336                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 337                     node_name = self.dictpath(event, 'data/device')
 338                     self.assertTrue(node_name in pending_jobs)
 339                     self.assert_qmp_absent(event, 'data/error')
 340                     pending_jobs.remove(node_name)
 341                 if event['event'] == 'BLOCK_JOB_READY':
 342                     self.assert_qmp(event, 'data/device', 'drive0')
 343                     self.assert_qmp(event, 'data/type', 'commit')
 344                     self.assert_qmp_absent(event, 'data/error')
 345                     self.assertTrue('drive0' in pending_jobs)
 346                     self.vm.qmp('block-job-complete', device='drive0')
 347
 348         self.assert_no_active_block_jobs()
 349
 350     # This is similar to test_stream_commit_1 but both jobs are slowed
 351     # down so they can run in parallel for a little while.
 352     def test_stream_commit_2(self):
 353         self.assertLessEqual(8, self.num_imgs)
 354         self.assert_no_active_block_jobs()
 355
 356         # Stream from node0 into node4
 357         result = self.vm.qmp('block-stream', device='node4', base_node='node0', job_id='node4', speed=1024*1024)
 358         self.assert_qmp(result, 'return', {})
 359
 360         # Commit from the active layer into node5
 361         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[5], speed=1024*1024)
 362         self.assert_qmp(result, 'return', {})
 363
 364         # Wait for all jobs to be finished.
 365         pending_jobs = ['node4', 'drive0']
 366         while len(pending_jobs) > 0:
 367             for event in self.vm.get_qmp_events(wait=True):
 368                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 369                     node_name = self.dictpath(event, 'data/device')
 370                     self.assertTrue(node_name in pending_jobs)
 371                     self.assert_qmp_absent(event, 'data/error')
 372                     pending_jobs.remove(node_name)
 373                 if event['event'] == 'BLOCK_JOB_READY':
 374                     self.assert_qmp(event, 'data/device', 'drive0')
 375                     self.assert_qmp(event, 'data/type', 'commit')
 376                     self.assert_qmp_absent(event, 'data/error')
 377                     self.assertTrue('drive0' in pending_jobs)
 378                     self.vm.qmp('block-job-complete', device='drive0')
 379
 380         self.assert_no_active_block_jobs()
 381
 382     # Test the base_node parameter
 383     def test_stream_base_node_name(self):
 384         self.assert_no_active_block_jobs()
 385
 386         self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]),
 387                             qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]),
 388                             'image file map matches backing file before streaming')
 389
 390         # Error: the base node does not exist
 391         result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream')
 392         self.assert_qmp(result, 'error/class', 'GenericError')
 393
 394         # Error: the base node is not a backing file of the top node
 395         result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream')
 396         self.assert_qmp(result, 'error/class', 'GenericError')
 397
 398         # Error: the base node is the same as the top node
 399         result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream')
 400         self.assert_qmp(result, 'error/class', 'GenericError')
 401
 402         # Error: cannot specify 'base' and 'base-node' at the same time
 403         result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream')
 404         self.assert_qmp(result, 'error/class', 'GenericError')
 405
 406         # Success: the base node is a backing file of the top node
 407         result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream')
 408         self.assert_qmp(result, 'return', {})
 409
 410         self.wait_until_completed(drive='stream')
 411
 412         self.assert_no_active_block_jobs()
 413         self.vm.shutdown()
 414
 415         self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]),
 416                          qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]),
 417                          'image file map matches backing file after streaming')
 418
 419 class TestQuorum(iotests.QMPTestCase):
 420     num_children = 3
 421     children = []
 422     backing = []
 423
 424     def setUp(self):
 425         opts = ['driver=quorum', 'vote-threshold=2']
 426
 427         # Initialize file names and command-line options
 428         for i in range(self.num_children):
 429             child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i)
 430             backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i)
 431             self.children.append(child_img)
 432             self.backing.append(backing_img)
 433             qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M')
 434             qemu_io('-f', iotests.imgfmt,
 435                     '-c', 'write -P 0x55 0 1024', backing_img)
 436             qemu_img('create', '-f', iotests.imgfmt,
 437                      '-o', 'backing_file=%s' % backing_img, child_img)
 438             opts.append("children.%d.file.filename=%s" % (i, child_img))
 439             opts.append("children.%d.node-name=node%d" % (i, i))
 440
 441         # Attach the drive to the VM
 442         self.vm = iotests.VM()
 443         self.vm.add_drive(path = None, opts = ','.join(opts))
 444         self.vm.launch()
 445
 446     def tearDown(self):
 447         self.vm.shutdown()
 448         for img in self.children:
 449             os.remove(img)
 450         for img in self.backing:
 451             os.remove(img)
 452
 453     def test_stream_quorum(self):
 454         if not iotests.supports_quorum():
 455             return
 456
 457         self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]),
 458                             qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]),
 459                             'image file map matches backing file before streaming')
 460
 461         self.assert_no_active_block_jobs()
 462
 463         result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0')
 464         self.assert_qmp(result, 'return', {})
 465
 466         self.wait_until_completed(drive='stream-node0')
 467
 468         self.assert_no_active_block_jobs()
 469         self.vm.shutdown()
 470
 471         self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]),
 472                          qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]),
 473                          'image file map does not match backing file after streaming')
 474
 475 class TestSmallerBackingFile(iotests.QMPTestCase):
 476     backing_len = 1 * 1024 * 1024 # MB
 477     image_len = 2 * backing_len
 478
 479     def setUp(self):
 480         iotests.create_image(backing_img, self.backing_len)
 481         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len))
 482         self.vm = iotests.VM().add_drive(test_img)
 483         self.vm.launch()
 484
 485     # If this hangs, then you are missing a fix to complete streaming when the
 486     # end of the backing file is reached.
 487     def test_stream(self):
 488         self.assert_no_active_block_jobs()
 489
 490         result = self.vm.qmp('block-stream', device='drive0')
 491         self.assert_qmp(result, 'return', {})
 492
 493         self.wait_until_completed()
 494
 495         self.assert_no_active_block_jobs()
 496         self.vm.shutdown()
 497
 498 class TestErrors(iotests.QMPTestCase):
 499     image_len = 2 * 1024 * 1024 # MB
 500
 501     # this should match STREAM_BUFFER_SIZE/512 in block/stream.c
 502     STREAM_BUFFER_SIZE = 512 * 1024
 503
 504     def create_blkdebug_file(self, name, event, errno):
 505         file = open(name, 'w')
 506         file.write('''
 507 [inject-error]
 508 state = "1"
 509 event = "%s"
 510 errno = "%d"
 511 immediately = "off"
 512 once = "on"
 513 sector = "%d"
 514
 515 [set-state]
 516 state = "1"
 517 event = "%s"
 518 new_state = "2"
 519
 520 [set-state]
 521 state = "2"
 522 event = "%s"
 523 new_state = "1"
 524 ''' % (event, errno, self.STREAM_BUFFER_SIZE // 512, event, event))
 525         file.close()
 526
 527 class TestEIO(TestErrors):
 528     def setUp(self):
 529         self.blkdebug_file = backing_img + ".blkdebug"
 530         iotests.create_image(backing_img, TestErrors.image_len)
 531         self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5)
 532         qemu_img('create', '-f', iotests.imgfmt,
 533                  '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw'
 534                        % (self.blkdebug_file, backing_img),
 535                  test_img)
 536         self.vm = iotests.VM().add_drive(test_img)
 537         self.vm.launch()
 538
 539     def tearDown(self):
 540         self.vm.shutdown()
 541         os.remove(test_img)
 542         os.remove(backing_img)
 543         os.remove(self.blkdebug_file)
 544
 545     def test_report(self):
 546         self.assert_no_active_block_jobs()
 547
 548         result = self.vm.qmp('block-stream', device='drive0')
 549         self.assert_qmp(result, 'return', {})
 550
 551         completed = False
 552         error = False
 553         while not completed:
 554             for event in self.vm.get_qmp_events(wait=True):
 555                 if event['event'] == 'BLOCK_JOB_ERROR':
 556                     self.assert_qmp(event, 'data/device', 'drive0')
 557                     self.assert_qmp(event, 'data/operation', 'read')
 558                     error = True
 559                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 560                     self.assertTrue(error, 'job completed unexpectedly')
 561                     self.assert_qmp(event, 'data/type', 'stream')
 562                     self.assert_qmp(event, 'data/device', 'drive0')
 563                     self.assert_qmp(event, 'data/error', 'Input/output error')
 564                     self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE)
 565                     self.assert_qmp(event, 'data/len', self.image_len)
 566                     completed = True
 567                 elif event['event'] == 'JOB_STATUS_CHANGE':
 568                     self.assert_qmp(event, 'data/id', 'drive0')
 569
 570         self.assert_no_active_block_jobs()
 571         self.vm.shutdown()
 572
 573     def test_ignore(self):
 574         self.assert_no_active_block_jobs()
 575
 576         result = self.vm.qmp('block-stream', device='drive0', on_error='ignore')
 577         self.assert_qmp(result, 'return', {})
 578
 579         error = False
 580         completed = False
 581         while not completed:
 582             for event in self.vm.get_qmp_events(wait=True):
 583                 if event['event'] == 'BLOCK_JOB_ERROR':
 584                     error = True
 585                     self.assert_qmp(event, 'data/device', 'drive0')
 586                     self.assert_qmp(event, 'data/operation', 'read')
 587                     result = self.vm.qmp('query-block-jobs')
 588                     if result == {'return': []}:
 589                         # Job finished too quickly
 590                         continue
 591                     self.assert_qmp(result, 'return[0]/paused', False)
 592                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 593                     self.assertTrue(error, 'job completed unexpectedly')
 594                     self.assert_qmp(event, 'data/type', 'stream')
 595                     self.assert_qmp(event, 'data/device', 'drive0')
 596                     self.assert_qmp(event, 'data/error', 'Input/output error')
 597                     self.assert_qmp(event, 'data/offset', self.image_len)
 598                     self.assert_qmp(event, 'data/len', self.image_len)
 599                     completed = True
 600                 elif event['event'] == 'JOB_STATUS_CHANGE':
 601                     self.assert_qmp(event, 'data/id', 'drive0')
 602
 603         self.assert_no_active_block_jobs()
 604         self.vm.shutdown()
 605
 606     def test_stop(self):
 607         self.assert_no_active_block_jobs()
 608
 609         result = self.vm.qmp('block-stream', device='drive0', on_error='stop')
 610         self.assert_qmp(result, 'return', {})
 611
 612         error = False
 613         completed = False
 614         while not completed:
 615             for event in self.vm.get_qmp_events(wait=True):
 616                 if event['event'] == 'BLOCK_JOB_ERROR':
 617                     error = True
 618                     self.assert_qmp(event, 'data/device', 'drive0')
 619                     self.assert_qmp(event, 'data/operation', 'read')
 620
 621                     result = self.vm.qmp('query-block-jobs')
 622                     self.assert_qmp(result, 'return[0]/paused', True)
 623                     self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE)
 624                     self.assert_qmp(result, 'return[0]/io-status', 'failed')
 625
 626                     result = self.vm.qmp('block-job-resume', device='drive0')
 627                     self.assert_qmp(result, 'return', {})
 628
 629                     result = self.vm.qmp('query-block-jobs')
 630                     if result == {'return': []}:
 631                         # Race; likely already finished. Check.
 632                         continue
 633                     self.assert_qmp(result, 'return[0]/paused', False)
 634                     self.assert_qmp(result, 'return[0]/io-status', 'ok')
 635                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 636                     self.assertTrue(error, 'job completed unexpectedly')
 637                     self.assert_qmp(event, 'data/type', 'stream')
 638                     self.assert_qmp(event, 'data/device', 'drive0')
 639                     self.assert_qmp_absent(event, 'data/error')
 640                     self.assert_qmp(event, 'data/offset', self.image_len)
 641                     self.assert_qmp(event, 'data/len', self.image_len)
 642                     completed = True
 643                 elif event['event'] == 'JOB_STATUS_CHANGE':
 644                     self.assert_qmp(event, 'data/id', 'drive0')
 645
 646         self.assert_no_active_block_jobs()
 647         self.vm.shutdown()
 648
 649     def test_enospc(self):
 650         self.assert_no_active_block_jobs()
 651
 652         result = self.vm.qmp('block-stream', device='drive0', on_error='enospc')
 653         self.assert_qmp(result, 'return', {})
 654
 655         completed = False
 656         error = False
 657         while not completed:
 658             for event in self.vm.get_qmp_events(wait=True):
 659                 if event['event'] == 'BLOCK_JOB_ERROR':
 660                     self.assert_qmp(event, 'data/device', 'drive0')
 661                     self.assert_qmp(event, 'data/operation', 'read')
 662                     error = True
 663                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 664                     self.assertTrue(error, 'job completed unexpectedly')
 665                     self.assert_qmp(event, 'data/type', 'stream')
 666                     self.assert_qmp(event, 'data/device', 'drive0')
 667                     self.assert_qmp(event, 'data/error', 'Input/output error')
 668                     self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE)
 669                     self.assert_qmp(event, 'data/len', self.image_len)
 670                     completed = True
 671                 elif event['event'] == 'JOB_STATUS_CHANGE':
 672                     self.assert_qmp(event, 'data/id', 'drive0')
 673
 674         self.assert_no_active_block_jobs()
 675         self.vm.shutdown()
 676
 677 class TestENOSPC(TestErrors):
 678     def setUp(self):
 679         self.blkdebug_file = backing_img + ".blkdebug"
 680         iotests.create_image(backing_img, TestErrors.image_len)
 681         self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28)
 682         qemu_img('create', '-f', iotests.imgfmt,
 683                  '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw'
 684                        % (self.blkdebug_file, backing_img),
 685                  test_img)
 686         self.vm = iotests.VM().add_drive(test_img)
 687         self.vm.launch()
 688
 689     def tearDown(self):
 690         self.vm.shutdown()
 691         os.remove(test_img)
 692         os.remove(backing_img)
 693         os.remove(self.blkdebug_file)
 694
 695     def test_enospc(self):
 696         self.assert_no_active_block_jobs()
 697
 698         result = self.vm.qmp('block-stream', device='drive0', on_error='enospc')
 699         self.assert_qmp(result, 'return', {})
 700
 701         error = False
 702         completed = False
 703         while not completed:
 704             for event in self.vm.get_qmp_events(wait=True):
 705                 if event['event'] == 'BLOCK_JOB_ERROR':
 706                     self.assert_qmp(event, 'data/device', 'drive0')
 707                     self.assert_qmp(event, 'data/operation', 'read')
 708                     error = True
 709
 710                     result = self.vm.qmp('query-block-jobs')
 711                     self.assert_qmp(result, 'return[0]/paused', True)
 712                     self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE)
 713                     self.assert_qmp(result, 'return[0]/io-status', 'nospace')
 714
 715                     result = self.vm.qmp('block-job-resume', device='drive0')
 716                     self.assert_qmp(result, 'return', {})
 717
 718                     result = self.vm.qmp('query-block-jobs')
 719                     if result == {'return': []}:
 720                         # Race; likely already finished. Check.
 721                         continue
 722                     self.assert_qmp(result, 'return[0]/paused', False)
 723                     self.assert_qmp(result, 'return[0]/io-status', 'ok')
 724                 elif event['event'] == 'BLOCK_JOB_COMPLETED':
 725                     self.assertTrue(error, 'job completed unexpectedly')
 726                     self.assert_qmp(event, 'data/type', 'stream')
 727                     self.assert_qmp(event, 'data/device', 'drive0')
 728                     self.assert_qmp_absent(event, 'data/error')
 729                     self.assert_qmp(event, 'data/offset', self.image_len)
 730                     self.assert_qmp(event, 'data/len', self.image_len)
 731                     completed = True
 732                 elif event['event'] == 'JOB_STATUS_CHANGE':
 733                     self.assert_qmp(event, 'data/id', 'drive0')
 734
 735         self.assert_no_active_block_jobs()
 736         self.vm.shutdown()
 737
 738 class TestStreamStop(iotests.QMPTestCase):
 739     image_len = 8 * 1024 * 1024 * 1024 # GB
 740
 741     def setUp(self):
 742         qemu_img('create', backing_img, str(TestStreamStop.image_len))
 743         qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img)
 744         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 745         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img)
 746         self.vm = iotests.VM().add_drive("blkdebug::" + test_img)
 747         self.vm.launch()
 748
 749     def tearDown(self):
 750         self.vm.shutdown()
 751         os.remove(test_img)
 752         os.remove(backing_img)
 753
 754     def test_stream_stop(self):
 755         self.assert_no_active_block_jobs()
 756
 757         self.vm.pause_drive('drive0')
 758         result = self.vm.qmp('block-stream', device='drive0')
 759         self.assert_qmp(result, 'return', {})
 760
 761         time.sleep(0.1)
 762         events = self.vm.get_qmp_events(wait=False)
 763         for e in events:
 764             self.assert_qmp(e, 'event', 'JOB_STATUS_CHANGE')
 765             self.assert_qmp(e, 'data/id', 'drive0')
 766
 767         self.cancel_and_wait(resume=True)
 768
 769 class TestSetSpeed(iotests.QMPTestCase):
 770     image_len = 80 * 1024 * 1024 # MB
 771
 772     def setUp(self):
 773         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 774         qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img)
 775         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 776         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img)
 777         self.vm = iotests.VM().add_drive('blkdebug::' + test_img)
 778         self.vm.launch()
 779
 780     def tearDown(self):
 781         self.vm.shutdown()
 782         os.remove(test_img)
 783         os.remove(backing_img)
 784
 785     # This is a short performance test which is not run by default.
 786     # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput"
 787     def perf_test_throughput(self):
 788         self.assert_no_active_block_jobs()
 789
 790         result = self.vm.qmp('block-stream', device='drive0')
 791         self.assert_qmp(result, 'return', {})
 792
 793         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 794         self.assert_qmp(result, 'return', {})
 795
 796         self.wait_until_completed()
 797
 798         self.assert_no_active_block_jobs()
 799
 800     def test_set_speed(self):
 801         self.assert_no_active_block_jobs()
 802
 803         self.vm.pause_drive('drive0')
 804         result = self.vm.qmp('block-stream', device='drive0')
 805         self.assert_qmp(result, 'return', {})
 806
 807         # Default speed is 0
 808         result = self.vm.qmp('query-block-jobs')
 809         self.assert_qmp(result, 'return[0]/device', 'drive0')
 810         self.assert_qmp(result, 'return[0]/speed', 0)
 811
 812         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 813         self.assert_qmp(result, 'return', {})
 814
 815         # Ensure the speed we set was accepted
 816         result = self.vm.qmp('query-block-jobs')
 817         self.assert_qmp(result, 'return[0]/device', 'drive0')
 818         self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024)
 819
 820         self.cancel_and_wait(resume=True)
 821         self.vm.pause_drive('drive0')
 822
 823         # Check setting speed in block-stream works
 824         result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024)
 825         self.assert_qmp(result, 'return', {})
 826
 827         result = self.vm.qmp('query-block-jobs')
 828         self.assert_qmp(result, 'return[0]/device', 'drive0')
 829         self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024)
 830
 831         self.cancel_and_wait(resume=True)
 832
 833     def test_set_speed_invalid(self):
 834         self.assert_no_active_block_jobs()
 835
 836         result = self.vm.qmp('block-stream', device='drive0', speed=-1)
 837         self.assert_qmp(result, 'error/class', 'GenericError')
 838
 839         self.assert_no_active_block_jobs()
 840
 841         self.vm.pause_drive('drive0')
 842         result = self.vm.qmp('block-stream', device='drive0')
 843         self.assert_qmp(result, 'return', {})
 844
 845         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1)
 846         self.assert_qmp(result, 'error/class', 'GenericError')
 847
 848         self.cancel_and_wait(resume=True)
 849
 850 if __name__ == '__main__':
 851     iotests.main(supported_fmts=['qcow2', 'qed'])