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 21import time 22import os 23import iotests 24from iotests import qemu_img, qemu_io 25 26backing_img = os.path.join(iotests.test_dir, 'backing.img') 27mid_img = os.path.join(iotests.test_dir, 'mid.img') 28test_img = os.path.join(iotests.test_dir, 'test.img') 29 30class 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 self.vm.resume_drive('drive0') 93 self.pause_job('drive0') 94 95 result = self.vm.qmp('query-block-jobs') 96 offset = self.dictpath(result, 'return[0]/offset') 97 98 time.sleep(0.5) 99 result = self.vm.qmp('query-block-jobs') 100 self.assert_qmp(result, 'return[0]/offset', offset) 101 102 result = self.vm.qmp('block-job-resume', device='drive0') 103 self.assert_qmp(result, 'return', {}) 104 105 self.wait_until_completed() 106 107 self.assert_no_active_block_jobs() 108 self.vm.shutdown() 109 110 self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img), 111 qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 112 'image file map does not match backing file after streaming') 113 114 def test_stream_no_op(self): 115 self.assert_no_active_block_jobs() 116 117 # The image map is empty before the operation 118 empty_map = qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', test_img) 119 120 # This is a no-op: no data should ever be copied from the base image 121 result = self.vm.qmp('block-stream', device='drive0', base=mid_img) 122 self.assert_qmp(result, 'return', {}) 123 124 self.wait_until_completed() 125 126 self.assert_no_active_block_jobs() 127 self.vm.shutdown() 128 129 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 130 empty_map, 'image file map changed after a no-op') 131 132 def test_stream_partial(self): 133 self.assert_no_active_block_jobs() 134 135 result = self.vm.qmp('block-stream', device='drive0', base=backing_img) 136 self.assert_qmp(result, 'return', {}) 137 138 self.wait_until_completed() 139 140 self.assert_no_active_block_jobs() 141 self.vm.shutdown() 142 143 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img), 144 qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 145 'image file map does not match backing file after streaming') 146 147 def test_device_not_found(self): 148 result = self.vm.qmp('block-stream', device='nonexistent') 149 self.assert_qmp(result, 'error/class', 'GenericError') 150 151 def test_job_id_missing(self): 152 result = self.vm.qmp('block-stream', device='mid') 153 self.assert_qmp(result, 'error/class', 'GenericError') 154 155 156class TestParallelOps(iotests.QMPTestCase): 157 num_ops = 4 # Number of parallel block-stream operations 158 num_imgs = num_ops * 2 + 1 159 image_len = num_ops * 1024 * 1024 160 imgs = [] 161 162 def setUp(self): 163 opts = [] 164 self.imgs = [] 165 166 # Initialize file names and command-line options 167 for i in range(self.num_imgs): 168 img_depth = self.num_imgs - i - 1 169 opts.append("backing." * img_depth + "node-name=node%d" % i) 170 self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i)) 171 172 # Create all images 173 iotests.create_image(self.imgs[0], self.image_len) 174 for i in range(1, self.num_imgs): 175 qemu_img('create', '-f', iotests.imgfmt, 176 '-o', 'backing_file=%s' % self.imgs[i-1], self.imgs[i]) 177 178 # Put data into the images we are copying data from 179 for i in range(self.num_imgs / 2): 180 img_index = i * 2 + 1 181 # Alternate between 512k and 1M. 182 # This way jobs will not finish in the same order they were created 183 num_kb = 512 + 512 * (i % 2) 184 qemu_io('-f', iotests.imgfmt, 185 '-c', 'write -P %d %d %d' % (i, i*1024*1024, num_kb * 1024), 186 self.imgs[img_index]) 187 188 # Attach the drive to the VM 189 self.vm = iotests.VM() 190 self.vm.add_drive(self.imgs[-1], ','.join(opts)) 191 self.vm.launch() 192 193 def tearDown(self): 194 self.vm.shutdown() 195 for img in self.imgs: 196 os.remove(img) 197 198 # Test that it's possible to run several block-stream operations 199 # in parallel in the same snapshot chain 200 def test_stream_parallel(self): 201 self.assert_no_active_block_jobs() 202 203 # Check that the maps don't match before the streaming operations 204 for i in range(2, self.num_imgs, 2): 205 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i]), 206 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]), 207 'image file map matches backing file before streaming') 208 209 # Create all streaming jobs 210 pending_jobs = [] 211 for i in range(2, self.num_imgs, 2): 212 node_name = 'node%d' % i 213 job_id = 'stream-%s' % node_name 214 pending_jobs.append(job_id) 215 result = self.vm.qmp('block-stream', device=node_name, job_id=job_id, base=self.imgs[i-2], speed=512*1024) 216 self.assert_qmp(result, 'return', {}) 217 218 # Wait for all jobs to be finished. 219 while len(pending_jobs) > 0: 220 for event in self.vm.get_qmp_events(wait=True): 221 if event['event'] == 'BLOCK_JOB_COMPLETED': 222 job_id = self.dictpath(event, 'data/device') 223 self.assertTrue(job_id in pending_jobs) 224 self.assert_qmp_absent(event, 'data/error') 225 pending_jobs.remove(job_id) 226 227 self.assert_no_active_block_jobs() 228 self.vm.shutdown() 229 230 # Check that all maps match now 231 for i in range(2, self.num_imgs, 2): 232 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]), 233 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]), 234 'image file map does not match backing file after streaming') 235 236 # Test that it's not possible to perform two block-stream 237 # operations if there are nodes involved in both. 238 def test_overlapping_1(self): 239 self.assert_no_active_block_jobs() 240 241 # Set a speed limit to make sure that this job blocks the rest 242 result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4', base=self.imgs[1], speed=1024*1024) 243 self.assert_qmp(result, 'return', {}) 244 245 result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2]) 246 self.assert_qmp(result, 'error/class', 'GenericError') 247 248 result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2]) 249 self.assert_qmp(result, 'error/class', 'GenericError') 250 251 result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4-v2') 252 self.assert_qmp(result, 'error/class', 'GenericError') 253 254 # block-commit should also fail if it touches nodes used by the stream job 255 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4') 256 self.assert_qmp(result, 'error/class', 'GenericError') 257 258 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1') 259 self.assert_qmp(result, 'error/class', 'GenericError') 260 261 # This fails because it needs to modify the backing string in node2, which is blocked 262 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[0], top=self.imgs[1], job_id='commit-node0') 263 self.assert_qmp(result, 'error/class', 'GenericError') 264 265 self.wait_until_completed(drive='stream-node4') 266 self.assert_no_active_block_jobs() 267 268 # Similar to test_overlapping_1, but with block-commit 269 # blocking the other jobs 270 def test_overlapping_2(self): 271 self.assertLessEqual(9, self.num_imgs) 272 self.assert_no_active_block_jobs() 273 274 # Set a speed limit to make sure that this job blocks the rest 275 result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[5], base=self.imgs[3], job_id='commit-node3', speed=1024*1024) 276 self.assert_qmp(result, 'return', {}) 277 278 result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3') 279 self.assert_qmp(result, 'error/class', 'GenericError') 280 281 result = self.vm.qmp('block-stream', device='node6', base=self.imgs[2], job_id='stream-node6') 282 self.assert_qmp(result, 'error/class', 'GenericError') 283 284 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], job_id='stream-node4') 285 self.assert_qmp(result, 'error/class', 'GenericError') 286 287 result = self.vm.qmp('block-stream', device='node6', base=self.imgs[4], job_id='stream-node6-v2') 288 self.assert_qmp(result, 'error/class', 'GenericError') 289 290 # This fails because block-commit needs to block node6, the overlay of the 'top' image 291 result = self.vm.qmp('block-stream', device='node7', base=self.imgs[5], job_id='stream-node6-v3') 292 self.assert_qmp(result, 'error/class', 'GenericError') 293 294 # This fails because block-commit currently blocks the active layer even if it's not used 295 result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0') 296 self.assert_qmp(result, 'error/class', 'GenericError') 297 298 self.wait_until_completed(drive='commit-node3') 299 300 # Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter. 301 # Internally this uses a mirror block job, hence the separate test case. 302 def test_overlapping_3(self): 303 self.assertLessEqual(8, self.num_imgs) 304 self.assert_no_active_block_jobs() 305 306 # Set a speed limit to make sure that this job blocks the rest 307 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024) 308 self.assert_qmp(result, 'return', {}) 309 310 result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6') 311 self.assert_qmp(result, 'error/class', 'GenericError') 312 313 event = self.vm.get_qmp_event(wait=True) 314 self.assertEqual(event['event'], 'BLOCK_JOB_READY') 315 self.assert_qmp(event, 'data/device', 'commit-drive0') 316 self.assert_qmp(event, 'data/type', 'commit') 317 self.assert_qmp_absent(event, 'data/error') 318 319 result = self.vm.qmp('block-job-complete', device='commit-drive0') 320 self.assert_qmp(result, 'return', {}) 321 322 self.wait_until_completed(drive='commit-drive0') 323 324 # Test a block-stream and a block-commit job in parallel 325 def test_stream_commit(self): 326 self.assertLessEqual(8, self.num_imgs) 327 self.assert_no_active_block_jobs() 328 329 # Stream from node0 into node2 330 result = self.vm.qmp('block-stream', device='node2', job_id='node2') 331 self.assert_qmp(result, 'return', {}) 332 333 # Commit from the active layer into node3 334 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3]) 335 self.assert_qmp(result, 'return', {}) 336 337 # Wait for all jobs to be finished. 338 pending_jobs = ['node2', 'drive0'] 339 while len(pending_jobs) > 0: 340 for event in self.vm.get_qmp_events(wait=True): 341 if event['event'] == 'BLOCK_JOB_COMPLETED': 342 node_name = self.dictpath(event, 'data/device') 343 self.assertTrue(node_name in pending_jobs) 344 self.assert_qmp_absent(event, 'data/error') 345 pending_jobs.remove(node_name) 346 if event['event'] == 'BLOCK_JOB_READY': 347 self.assert_qmp(event, 'data/device', 'drive0') 348 self.assert_qmp(event, 'data/type', 'commit') 349 self.assert_qmp_absent(event, 'data/error') 350 self.assertTrue('drive0' in pending_jobs) 351 self.vm.qmp('block-job-complete', device='drive0') 352 353 self.assert_no_active_block_jobs() 354 355 # Test the base_node parameter 356 def test_stream_base_node_name(self): 357 self.assert_no_active_block_jobs() 358 359 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]), 360 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]), 361 'image file map matches backing file before streaming') 362 363 # Error: the base node does not exist 364 result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream') 365 self.assert_qmp(result, 'error/class', 'GenericError') 366 367 # Error: the base node is not a backing file of the top node 368 result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream') 369 self.assert_qmp(result, 'error/class', 'GenericError') 370 371 # Error: the base node is the same as the top node 372 result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream') 373 self.assert_qmp(result, 'error/class', 'GenericError') 374 375 # Error: cannot specify 'base' and 'base-node' at the same time 376 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream') 377 self.assert_qmp(result, 'error/class', 'GenericError') 378 379 # Success: the base node is a backing file of the top node 380 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream') 381 self.assert_qmp(result, 'return', {}) 382 383 self.wait_until_completed(drive='stream') 384 385 self.assert_no_active_block_jobs() 386 self.vm.shutdown() 387 388 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]), 389 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]), 390 'image file map matches backing file after streaming') 391 392class TestQuorum(iotests.QMPTestCase): 393 num_children = 3 394 children = [] 395 backing = [] 396 397 def setUp(self): 398 opts = ['driver=quorum', 'vote-threshold=2'] 399 400 # Initialize file names and command-line options 401 for i in range(self.num_children): 402 child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i) 403 backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i) 404 self.children.append(child_img) 405 self.backing.append(backing_img) 406 qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') 407 qemu_io('-f', iotests.imgfmt, 408 '-c', 'write -P 0x55 0 1024', backing_img) 409 qemu_img('create', '-f', iotests.imgfmt, 410 '-o', 'backing_file=%s' % backing_img, child_img) 411 opts.append("children.%d.file.filename=%s" % (i, child_img)) 412 opts.append("children.%d.node-name=node%d" % (i, i)) 413 414 # Attach the drive to the VM 415 self.vm = iotests.VM() 416 self.vm.add_drive(path = None, opts = ','.join(opts)) 417 self.vm.launch() 418 419 def tearDown(self): 420 self.vm.shutdown() 421 for img in self.children: 422 os.remove(img) 423 for img in self.backing: 424 os.remove(img) 425 426 def test_stream_quorum(self): 427 if not iotests.supports_quorum(): 428 return 429 430 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]), 431 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]), 432 'image file map matches backing file before streaming') 433 434 self.assert_no_active_block_jobs() 435 436 result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0') 437 self.assert_qmp(result, 'return', {}) 438 439 self.wait_until_completed(drive='stream-node0') 440 441 self.assert_no_active_block_jobs() 442 self.vm.shutdown() 443 444 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]), 445 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]), 446 'image file map does not match backing file after streaming') 447 448class TestSmallerBackingFile(iotests.QMPTestCase): 449 backing_len = 1 * 1024 * 1024 # MB 450 image_len = 2 * backing_len 451 452 def setUp(self): 453 iotests.create_image(backing_img, self.backing_len) 454 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len)) 455 self.vm = iotests.VM().add_drive(test_img) 456 self.vm.launch() 457 458 # If this hangs, then you are missing a fix to complete streaming when the 459 # end of the backing file is reached. 460 def test_stream(self): 461 self.assert_no_active_block_jobs() 462 463 result = self.vm.qmp('block-stream', device='drive0') 464 self.assert_qmp(result, 'return', {}) 465 466 self.wait_until_completed() 467 468 self.assert_no_active_block_jobs() 469 self.vm.shutdown() 470 471class TestErrors(iotests.QMPTestCase): 472 image_len = 2 * 1024 * 1024 # MB 473 474 # this should match STREAM_BUFFER_SIZE/512 in block/stream.c 475 STREAM_BUFFER_SIZE = 512 * 1024 476 477 def create_blkdebug_file(self, name, event, errno): 478 file = open(name, 'w') 479 file.write(''' 480[inject-error] 481state = "1" 482event = "%s" 483errno = "%d" 484immediately = "off" 485once = "on" 486sector = "%d" 487 488[set-state] 489state = "1" 490event = "%s" 491new_state = "2" 492 493[set-state] 494state = "2" 495event = "%s" 496new_state = "1" 497''' % (event, errno, self.STREAM_BUFFER_SIZE / 512, event, event)) 498 file.close() 499 500class TestEIO(TestErrors): 501 def setUp(self): 502 self.blkdebug_file = backing_img + ".blkdebug" 503 iotests.create_image(backing_img, TestErrors.image_len) 504 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 505 qemu_img('create', '-f', iotests.imgfmt, 506 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 507 % (self.blkdebug_file, backing_img), 508 test_img) 509 self.vm = iotests.VM().add_drive(test_img) 510 self.vm.launch() 511 512 def tearDown(self): 513 self.vm.shutdown() 514 os.remove(test_img) 515 os.remove(backing_img) 516 os.remove(self.blkdebug_file) 517 518 def test_report(self): 519 self.assert_no_active_block_jobs() 520 521 result = self.vm.qmp('block-stream', device='drive0') 522 self.assert_qmp(result, 'return', {}) 523 524 completed = False 525 error = False 526 while not completed: 527 for event in self.vm.get_qmp_events(wait=True): 528 if event['event'] == 'BLOCK_JOB_ERROR': 529 self.assert_qmp(event, 'data/device', 'drive0') 530 self.assert_qmp(event, 'data/operation', 'read') 531 error = True 532 elif event['event'] == 'BLOCK_JOB_COMPLETED': 533 self.assertTrue(error, 'job completed unexpectedly') 534 self.assert_qmp(event, 'data/type', 'stream') 535 self.assert_qmp(event, 'data/device', 'drive0') 536 self.assert_qmp(event, 'data/error', 'Input/output error') 537 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 538 self.assert_qmp(event, 'data/len', self.image_len) 539 completed = True 540 541 self.assert_no_active_block_jobs() 542 self.vm.shutdown() 543 544 def test_ignore(self): 545 self.assert_no_active_block_jobs() 546 547 result = self.vm.qmp('block-stream', device='drive0', on_error='ignore') 548 self.assert_qmp(result, 'return', {}) 549 550 error = False 551 completed = False 552 while not completed: 553 for event in self.vm.get_qmp_events(wait=True): 554 if event['event'] == 'BLOCK_JOB_ERROR': 555 error = True 556 self.assert_qmp(event, 'data/device', 'drive0') 557 self.assert_qmp(event, 'data/operation', 'read') 558 result = self.vm.qmp('query-block-jobs') 559 if result == {'return': []}: 560 # Job finished too quickly 561 continue 562 self.assert_qmp(result, 'return[0]/paused', False) 563 elif event['event'] == 'BLOCK_JOB_COMPLETED': 564 self.assertTrue(error, 'job completed unexpectedly') 565 self.assert_qmp(event, 'data/type', 'stream') 566 self.assert_qmp(event, 'data/device', 'drive0') 567 self.assert_qmp(event, 'data/error', 'Input/output error') 568 self.assert_qmp(event, 'data/offset', self.image_len) 569 self.assert_qmp(event, 'data/len', self.image_len) 570 completed = True 571 572 self.assert_no_active_block_jobs() 573 self.vm.shutdown() 574 575 def test_stop(self): 576 self.assert_no_active_block_jobs() 577 578 result = self.vm.qmp('block-stream', device='drive0', on_error='stop') 579 self.assert_qmp(result, 'return', {}) 580 581 error = False 582 completed = False 583 while not completed: 584 for event in self.vm.get_qmp_events(wait=True): 585 if event['event'] == 'BLOCK_JOB_ERROR': 586 error = True 587 self.assert_qmp(event, 'data/device', 'drive0') 588 self.assert_qmp(event, 'data/operation', 'read') 589 590 result = self.vm.qmp('query-block-jobs') 591 self.assert_qmp(result, 'return[0]/paused', True) 592 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 593 self.assert_qmp(result, 'return[0]/io-status', 'failed') 594 595 result = self.vm.qmp('block-job-resume', device='drive0') 596 self.assert_qmp(result, 'return', {}) 597 598 result = self.vm.qmp('query-block-jobs') 599 if result == {'return': []}: 600 # Race; likely already finished. Check. 601 continue 602 self.assert_qmp(result, 'return[0]/paused', False) 603 self.assert_qmp(result, 'return[0]/io-status', 'ok') 604 elif event['event'] == 'BLOCK_JOB_COMPLETED': 605 self.assertTrue(error, 'job completed unexpectedly') 606 self.assert_qmp(event, 'data/type', 'stream') 607 self.assert_qmp(event, 'data/device', 'drive0') 608 self.assert_qmp_absent(event, 'data/error') 609 self.assert_qmp(event, 'data/offset', self.image_len) 610 self.assert_qmp(event, 'data/len', self.image_len) 611 completed = True 612 613 self.assert_no_active_block_jobs() 614 self.vm.shutdown() 615 616 def test_enospc(self): 617 self.assert_no_active_block_jobs() 618 619 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 620 self.assert_qmp(result, 'return', {}) 621 622 completed = False 623 error = False 624 while not completed: 625 for event in self.vm.get_qmp_events(wait=True): 626 if event['event'] == 'BLOCK_JOB_ERROR': 627 self.assert_qmp(event, 'data/device', 'drive0') 628 self.assert_qmp(event, 'data/operation', 'read') 629 error = True 630 elif event['event'] == 'BLOCK_JOB_COMPLETED': 631 self.assertTrue(error, 'job completed unexpectedly') 632 self.assert_qmp(event, 'data/type', 'stream') 633 self.assert_qmp(event, 'data/device', 'drive0') 634 self.assert_qmp(event, 'data/error', 'Input/output error') 635 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 636 self.assert_qmp(event, 'data/len', self.image_len) 637 completed = True 638 639 self.assert_no_active_block_jobs() 640 self.vm.shutdown() 641 642class TestENOSPC(TestErrors): 643 def setUp(self): 644 self.blkdebug_file = backing_img + ".blkdebug" 645 iotests.create_image(backing_img, TestErrors.image_len) 646 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28) 647 qemu_img('create', '-f', iotests.imgfmt, 648 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 649 % (self.blkdebug_file, backing_img), 650 test_img) 651 self.vm = iotests.VM().add_drive(test_img) 652 self.vm.launch() 653 654 def tearDown(self): 655 self.vm.shutdown() 656 os.remove(test_img) 657 os.remove(backing_img) 658 os.remove(self.blkdebug_file) 659 660 def test_enospc(self): 661 self.assert_no_active_block_jobs() 662 663 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 664 self.assert_qmp(result, 'return', {}) 665 666 error = False 667 completed = False 668 while not completed: 669 for event in self.vm.get_qmp_events(wait=True): 670 if event['event'] == 'BLOCK_JOB_ERROR': 671 self.assert_qmp(event, 'data/device', 'drive0') 672 self.assert_qmp(event, 'data/operation', 'read') 673 674 result = self.vm.qmp('query-block-jobs') 675 self.assert_qmp(result, 'return[0]/paused', True) 676 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 677 self.assert_qmp(result, 'return[0]/io-status', 'nospace') 678 679 result = self.vm.qmp('block-job-resume', device='drive0') 680 self.assert_qmp(result, 'return', {}) 681 682 result = self.vm.qmp('query-block-jobs') 683 self.assert_qmp(result, 'return[0]/paused', False) 684 self.assert_qmp(result, 'return[0]/io-status', 'ok') 685 error = True 686 elif event['event'] == 'BLOCK_JOB_COMPLETED': 687 self.assertTrue(error, 'job completed unexpectedly') 688 self.assert_qmp(event, 'data/type', 'stream') 689 self.assert_qmp(event, 'data/device', 'drive0') 690 self.assert_qmp_absent(event, 'data/error') 691 self.assert_qmp(event, 'data/offset', self.image_len) 692 self.assert_qmp(event, 'data/len', self.image_len) 693 completed = True 694 695 self.assert_no_active_block_jobs() 696 self.vm.shutdown() 697 698class TestStreamStop(iotests.QMPTestCase): 699 image_len = 8 * 1024 * 1024 * 1024 # GB 700 701 def setUp(self): 702 qemu_img('create', backing_img, str(TestStreamStop.image_len)) 703 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 704 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 705 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 706 self.vm = iotests.VM().add_drive("blkdebug::" + test_img) 707 self.vm.launch() 708 709 def tearDown(self): 710 self.vm.shutdown() 711 os.remove(test_img) 712 os.remove(backing_img) 713 714 def test_stream_stop(self): 715 self.assert_no_active_block_jobs() 716 717 self.vm.pause_drive('drive0') 718 result = self.vm.qmp('block-stream', device='drive0') 719 self.assert_qmp(result, 'return', {}) 720 721 time.sleep(0.1) 722 events = self.vm.get_qmp_events(wait=False) 723 self.assertEqual(events, [], 'unexpected QMP event: %s' % events) 724 725 self.cancel_and_wait(resume=True) 726 727class TestSetSpeed(iotests.QMPTestCase): 728 image_len = 80 * 1024 * 1024 # MB 729 730 def setUp(self): 731 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 732 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 733 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 734 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 735 self.vm = iotests.VM().add_drive('blkdebug::' + test_img) 736 self.vm.launch() 737 738 def tearDown(self): 739 self.vm.shutdown() 740 os.remove(test_img) 741 os.remove(backing_img) 742 743 # This is a short performance test which is not run by default. 744 # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" 745 def perf_test_throughput(self): 746 self.assert_no_active_block_jobs() 747 748 result = self.vm.qmp('block-stream', device='drive0') 749 self.assert_qmp(result, 'return', {}) 750 751 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 752 self.assert_qmp(result, 'return', {}) 753 754 self.wait_until_completed() 755 756 self.assert_no_active_block_jobs() 757 758 def test_set_speed(self): 759 self.assert_no_active_block_jobs() 760 761 self.vm.pause_drive('drive0') 762 result = self.vm.qmp('block-stream', device='drive0') 763 self.assert_qmp(result, 'return', {}) 764 765 # Default speed is 0 766 result = self.vm.qmp('query-block-jobs') 767 self.assert_qmp(result, 'return[0]/device', 'drive0') 768 self.assert_qmp(result, 'return[0]/speed', 0) 769 770 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 771 self.assert_qmp(result, 'return', {}) 772 773 # Ensure the speed we set was accepted 774 result = self.vm.qmp('query-block-jobs') 775 self.assert_qmp(result, 'return[0]/device', 'drive0') 776 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 777 778 self.cancel_and_wait(resume=True) 779 self.vm.pause_drive('drive0') 780 781 # Check setting speed in block-stream works 782 result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024) 783 self.assert_qmp(result, 'return', {}) 784 785 result = self.vm.qmp('query-block-jobs') 786 self.assert_qmp(result, 'return[0]/device', 'drive0') 787 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 788 789 self.cancel_and_wait(resume=True) 790 791 def test_set_speed_invalid(self): 792 self.assert_no_active_block_jobs() 793 794 result = self.vm.qmp('block-stream', device='drive0', speed=-1) 795 self.assert_qmp(result, 'error/class', 'GenericError') 796 797 self.assert_no_active_block_jobs() 798 799 result = self.vm.qmp('block-stream', device='drive0') 800 self.assert_qmp(result, 'return', {}) 801 802 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 803 self.assert_qmp(result, 'error/class', 'GenericError') 804 805 self.cancel_and_wait() 806 807if __name__ == '__main__': 808 iotests.main(supported_fmts=['qcow2', 'qed']) 809