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 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 154class 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.get_qmp_event(wait=True) 308 self.assertEqual(event['event'], 'BLOCK_JOB_READY') 309 self.assert_qmp(event, 'data/device', 'commit-drive0') 310 self.assert_qmp(event, 'data/type', 'commit') 311 self.assert_qmp_absent(event, 'data/error') 312 313 result = self.vm.qmp('block-job-complete', device='commit-drive0') 314 self.assert_qmp(result, 'return', {}) 315 316 self.wait_until_completed(drive='commit-drive0') 317 318 # Test a block-stream and a block-commit job in parallel 319 # Here the stream job is supposed to finish quickly in order to reproduce 320 # the scenario that triggers the bug fixed in 3d5d319e1221 and 1a63a907507 321 def test_stream_commit_1(self): 322 self.assertLessEqual(8, self.num_imgs) 323 self.assert_no_active_block_jobs() 324 325 # Stream from node0 into node2 326 result = self.vm.qmp('block-stream', device='node2', base_node='node0', job_id='node2') 327 self.assert_qmp(result, 'return', {}) 328 329 # Commit from the active layer into node3 330 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3]) 331 self.assert_qmp(result, 'return', {}) 332 333 # Wait for all jobs to be finished. 334 pending_jobs = ['node2', 'drive0'] 335 while len(pending_jobs) > 0: 336 for event in self.vm.get_qmp_events(wait=True): 337 if event['event'] == 'BLOCK_JOB_COMPLETED': 338 node_name = self.dictpath(event, 'data/device') 339 self.assertTrue(node_name in pending_jobs) 340 self.assert_qmp_absent(event, 'data/error') 341 pending_jobs.remove(node_name) 342 if event['event'] == 'BLOCK_JOB_READY': 343 self.assert_qmp(event, 'data/device', 'drive0') 344 self.assert_qmp(event, 'data/type', 'commit') 345 self.assert_qmp_absent(event, 'data/error') 346 self.assertTrue('drive0' in pending_jobs) 347 self.vm.qmp('block-job-complete', device='drive0') 348 349 self.assert_no_active_block_jobs() 350 351 # This is similar to test_stream_commit_1 but both jobs are slowed 352 # down so they can run in parallel for a little while. 353 def test_stream_commit_2(self): 354 self.assertLessEqual(8, self.num_imgs) 355 self.assert_no_active_block_jobs() 356 357 # Stream from node0 into node4 358 result = self.vm.qmp('block-stream', device='node4', base_node='node0', job_id='node4', speed=1024*1024) 359 self.assert_qmp(result, 'return', {}) 360 361 # Commit from the active layer into node5 362 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[5], speed=1024*1024) 363 self.assert_qmp(result, 'return', {}) 364 365 # Wait for all jobs to be finished. 366 pending_jobs = ['node4', 'drive0'] 367 while len(pending_jobs) > 0: 368 for event in self.vm.get_qmp_events(wait=True): 369 if event['event'] == 'BLOCK_JOB_COMPLETED': 370 node_name = self.dictpath(event, 'data/device') 371 self.assertTrue(node_name in pending_jobs) 372 self.assert_qmp_absent(event, 'data/error') 373 pending_jobs.remove(node_name) 374 if event['event'] == 'BLOCK_JOB_READY': 375 self.assert_qmp(event, 'data/device', 'drive0') 376 self.assert_qmp(event, 'data/type', 'commit') 377 self.assert_qmp_absent(event, 'data/error') 378 self.assertTrue('drive0' in pending_jobs) 379 self.vm.qmp('block-job-complete', device='drive0') 380 381 self.assert_no_active_block_jobs() 382 383 # Test the base_node parameter 384 def test_stream_base_node_name(self): 385 self.assert_no_active_block_jobs() 386 387 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]), 388 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]), 389 'image file map matches backing file before streaming') 390 391 # Error: the base node does not exist 392 result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream') 393 self.assert_qmp(result, 'error/class', 'GenericError') 394 395 # Error: the base node is not a backing file of the top node 396 result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream') 397 self.assert_qmp(result, 'error/class', 'GenericError') 398 399 # Error: the base node is the same as the top node 400 result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream') 401 self.assert_qmp(result, 'error/class', 'GenericError') 402 403 # Error: cannot specify 'base' and 'base-node' at the same time 404 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream') 405 self.assert_qmp(result, 'error/class', 'GenericError') 406 407 # Success: the base node is a backing file of the top node 408 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream') 409 self.assert_qmp(result, 'return', {}) 410 411 self.wait_until_completed(drive='stream') 412 413 self.assert_no_active_block_jobs() 414 self.vm.shutdown() 415 416 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]), 417 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]), 418 'image file map matches backing file after streaming') 419 420class TestQuorum(iotests.QMPTestCase): 421 num_children = 3 422 children = [] 423 backing = [] 424 425 def setUp(self): 426 opts = ['driver=quorum', 'vote-threshold=2'] 427 428 # Initialize file names and command-line options 429 for i in range(self.num_children): 430 child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i) 431 backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i) 432 self.children.append(child_img) 433 self.backing.append(backing_img) 434 qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') 435 qemu_io('-f', iotests.imgfmt, 436 '-c', 'write -P 0x55 0 1024', backing_img) 437 qemu_img('create', '-f', iotests.imgfmt, 438 '-o', 'backing_file=%s' % backing_img, child_img) 439 opts.append("children.%d.file.filename=%s" % (i, child_img)) 440 opts.append("children.%d.node-name=node%d" % (i, i)) 441 442 # Attach the drive to the VM 443 self.vm = iotests.VM() 444 self.vm.add_drive(path = None, opts = ','.join(opts)) 445 self.vm.launch() 446 447 def tearDown(self): 448 self.vm.shutdown() 449 for img in self.children: 450 os.remove(img) 451 for img in self.backing: 452 os.remove(img) 453 454 def test_stream_quorum(self): 455 if not iotests.supports_quorum(): 456 return 457 458 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]), 459 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]), 460 'image file map matches backing file before streaming') 461 462 self.assert_no_active_block_jobs() 463 464 result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0') 465 self.assert_qmp(result, 'return', {}) 466 467 self.wait_until_completed(drive='stream-node0') 468 469 self.assert_no_active_block_jobs() 470 self.vm.shutdown() 471 472 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]), 473 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]), 474 'image file map does not match backing file after streaming') 475 476class TestSmallerBackingFile(iotests.QMPTestCase): 477 backing_len = 1 * 1024 * 1024 # MB 478 image_len = 2 * backing_len 479 480 def setUp(self): 481 iotests.create_image(backing_img, self.backing_len) 482 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len)) 483 self.vm = iotests.VM().add_drive(test_img) 484 self.vm.launch() 485 486 # If this hangs, then you are missing a fix to complete streaming when the 487 # end of the backing file is reached. 488 def test_stream(self): 489 self.assert_no_active_block_jobs() 490 491 result = self.vm.qmp('block-stream', device='drive0') 492 self.assert_qmp(result, 'return', {}) 493 494 self.wait_until_completed() 495 496 self.assert_no_active_block_jobs() 497 self.vm.shutdown() 498 499class TestErrors(iotests.QMPTestCase): 500 image_len = 2 * 1024 * 1024 # MB 501 502 # this should match STREAM_BUFFER_SIZE/512 in block/stream.c 503 STREAM_BUFFER_SIZE = 512 * 1024 504 505 def create_blkdebug_file(self, name, event, errno): 506 file = open(name, 'w') 507 file.write(''' 508[inject-error] 509state = "1" 510event = "%s" 511errno = "%d" 512immediately = "off" 513once = "on" 514sector = "%d" 515 516[set-state] 517state = "1" 518event = "%s" 519new_state = "2" 520 521[set-state] 522state = "2" 523event = "%s" 524new_state = "1" 525''' % (event, errno, self.STREAM_BUFFER_SIZE / 512, event, event)) 526 file.close() 527 528class TestEIO(TestErrors): 529 def setUp(self): 530 self.blkdebug_file = backing_img + ".blkdebug" 531 iotests.create_image(backing_img, TestErrors.image_len) 532 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 533 qemu_img('create', '-f', iotests.imgfmt, 534 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 535 % (self.blkdebug_file, backing_img), 536 test_img) 537 self.vm = iotests.VM().add_drive(test_img) 538 self.vm.launch() 539 540 def tearDown(self): 541 self.vm.shutdown() 542 os.remove(test_img) 543 os.remove(backing_img) 544 os.remove(self.blkdebug_file) 545 546 def test_report(self): 547 self.assert_no_active_block_jobs() 548 549 result = self.vm.qmp('block-stream', device='drive0') 550 self.assert_qmp(result, 'return', {}) 551 552 completed = False 553 error = False 554 while not completed: 555 for event in self.vm.get_qmp_events(wait=True): 556 if event['event'] == 'BLOCK_JOB_ERROR': 557 self.assert_qmp(event, 'data/device', 'drive0') 558 self.assert_qmp(event, 'data/operation', 'read') 559 error = True 560 elif event['event'] == 'BLOCK_JOB_COMPLETED': 561 self.assertTrue(error, 'job completed unexpectedly') 562 self.assert_qmp(event, 'data/type', 'stream') 563 self.assert_qmp(event, 'data/device', 'drive0') 564 self.assert_qmp(event, 'data/error', 'Input/output error') 565 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 566 self.assert_qmp(event, 'data/len', self.image_len) 567 completed = True 568 569 self.assert_no_active_block_jobs() 570 self.vm.shutdown() 571 572 def test_ignore(self): 573 self.assert_no_active_block_jobs() 574 575 result = self.vm.qmp('block-stream', device='drive0', on_error='ignore') 576 self.assert_qmp(result, 'return', {}) 577 578 error = False 579 completed = False 580 while not completed: 581 for event in self.vm.get_qmp_events(wait=True): 582 if event['event'] == 'BLOCK_JOB_ERROR': 583 error = True 584 self.assert_qmp(event, 'data/device', 'drive0') 585 self.assert_qmp(event, 'data/operation', 'read') 586 result = self.vm.qmp('query-block-jobs') 587 if result == {'return': []}: 588 # Job finished too quickly 589 continue 590 self.assert_qmp(result, 'return[0]/paused', False) 591 elif event['event'] == 'BLOCK_JOB_COMPLETED': 592 self.assertTrue(error, 'job completed unexpectedly') 593 self.assert_qmp(event, 'data/type', 'stream') 594 self.assert_qmp(event, 'data/device', 'drive0') 595 self.assert_qmp(event, 'data/error', 'Input/output error') 596 self.assert_qmp(event, 'data/offset', self.image_len) 597 self.assert_qmp(event, 'data/len', self.image_len) 598 completed = True 599 600 self.assert_no_active_block_jobs() 601 self.vm.shutdown() 602 603 def test_stop(self): 604 self.assert_no_active_block_jobs() 605 606 result = self.vm.qmp('block-stream', device='drive0', on_error='stop') 607 self.assert_qmp(result, 'return', {}) 608 609 error = False 610 completed = False 611 while not completed: 612 for event in self.vm.get_qmp_events(wait=True): 613 if event['event'] == 'BLOCK_JOB_ERROR': 614 error = True 615 self.assert_qmp(event, 'data/device', 'drive0') 616 self.assert_qmp(event, 'data/operation', 'read') 617 618 result = self.vm.qmp('query-block-jobs') 619 self.assert_qmp(result, 'return[0]/paused', True) 620 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 621 self.assert_qmp(result, 'return[0]/io-status', 'failed') 622 623 result = self.vm.qmp('block-job-resume', device='drive0') 624 self.assert_qmp(result, 'return', {}) 625 626 result = self.vm.qmp('query-block-jobs') 627 if result == {'return': []}: 628 # Race; likely already finished. Check. 629 continue 630 self.assert_qmp(result, 'return[0]/paused', False) 631 self.assert_qmp(result, 'return[0]/io-status', 'ok') 632 elif event['event'] == 'BLOCK_JOB_COMPLETED': 633 self.assertTrue(error, 'job completed unexpectedly') 634 self.assert_qmp(event, 'data/type', 'stream') 635 self.assert_qmp(event, 'data/device', 'drive0') 636 self.assert_qmp_absent(event, 'data/error') 637 self.assert_qmp(event, 'data/offset', self.image_len) 638 self.assert_qmp(event, 'data/len', self.image_len) 639 completed = True 640 641 self.assert_no_active_block_jobs() 642 self.vm.shutdown() 643 644 def test_enospc(self): 645 self.assert_no_active_block_jobs() 646 647 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 648 self.assert_qmp(result, 'return', {}) 649 650 completed = False 651 error = False 652 while not completed: 653 for event in self.vm.get_qmp_events(wait=True): 654 if event['event'] == 'BLOCK_JOB_ERROR': 655 self.assert_qmp(event, 'data/device', 'drive0') 656 self.assert_qmp(event, 'data/operation', 'read') 657 error = True 658 elif event['event'] == 'BLOCK_JOB_COMPLETED': 659 self.assertTrue(error, 'job completed unexpectedly') 660 self.assert_qmp(event, 'data/type', 'stream') 661 self.assert_qmp(event, 'data/device', 'drive0') 662 self.assert_qmp(event, 'data/error', 'Input/output error') 663 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 664 self.assert_qmp(event, 'data/len', self.image_len) 665 completed = True 666 667 self.assert_no_active_block_jobs() 668 self.vm.shutdown() 669 670class TestENOSPC(TestErrors): 671 def setUp(self): 672 self.blkdebug_file = backing_img + ".blkdebug" 673 iotests.create_image(backing_img, TestErrors.image_len) 674 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28) 675 qemu_img('create', '-f', iotests.imgfmt, 676 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 677 % (self.blkdebug_file, backing_img), 678 test_img) 679 self.vm = iotests.VM().add_drive(test_img) 680 self.vm.launch() 681 682 def tearDown(self): 683 self.vm.shutdown() 684 os.remove(test_img) 685 os.remove(backing_img) 686 os.remove(self.blkdebug_file) 687 688 def test_enospc(self): 689 self.assert_no_active_block_jobs() 690 691 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 692 self.assert_qmp(result, 'return', {}) 693 694 error = False 695 completed = False 696 while not completed: 697 for event in self.vm.get_qmp_events(wait=True): 698 if event['event'] == 'BLOCK_JOB_ERROR': 699 self.assert_qmp(event, 'data/device', 'drive0') 700 self.assert_qmp(event, 'data/operation', 'read') 701 error = True 702 703 result = self.vm.qmp('query-block-jobs') 704 self.assert_qmp(result, 'return[0]/paused', True) 705 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 706 self.assert_qmp(result, 'return[0]/io-status', 'nospace') 707 708 result = self.vm.qmp('block-job-resume', device='drive0') 709 self.assert_qmp(result, 'return', {}) 710 711 result = self.vm.qmp('query-block-jobs') 712 if result == {'return': []}: 713 # Race; likely already finished. Check. 714 continue 715 self.assert_qmp(result, 'return[0]/paused', False) 716 self.assert_qmp(result, 'return[0]/io-status', 'ok') 717 elif event['event'] == 'BLOCK_JOB_COMPLETED': 718 self.assertTrue(error, 'job completed unexpectedly') 719 self.assert_qmp(event, 'data/type', 'stream') 720 self.assert_qmp(event, 'data/device', 'drive0') 721 self.assert_qmp_absent(event, 'data/error') 722 self.assert_qmp(event, 'data/offset', self.image_len) 723 self.assert_qmp(event, 'data/len', self.image_len) 724 completed = True 725 726 self.assert_no_active_block_jobs() 727 self.vm.shutdown() 728 729class TestStreamStop(iotests.QMPTestCase): 730 image_len = 8 * 1024 * 1024 * 1024 # GB 731 732 def setUp(self): 733 qemu_img('create', backing_img, str(TestStreamStop.image_len)) 734 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 735 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 736 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 737 self.vm = iotests.VM().add_drive("blkdebug::" + test_img) 738 self.vm.launch() 739 740 def tearDown(self): 741 self.vm.shutdown() 742 os.remove(test_img) 743 os.remove(backing_img) 744 745 def test_stream_stop(self): 746 self.assert_no_active_block_jobs() 747 748 self.vm.pause_drive('drive0') 749 result = self.vm.qmp('block-stream', device='drive0') 750 self.assert_qmp(result, 'return', {}) 751 752 time.sleep(0.1) 753 events = self.vm.get_qmp_events(wait=False) 754 self.assertEqual(events, [], 'unexpected QMP event: %s' % events) 755 756 self.cancel_and_wait(resume=True) 757 758class TestSetSpeed(iotests.QMPTestCase): 759 image_len = 80 * 1024 * 1024 # MB 760 761 def setUp(self): 762 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 763 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 764 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 765 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 766 self.vm = iotests.VM().add_drive('blkdebug::' + test_img) 767 self.vm.launch() 768 769 def tearDown(self): 770 self.vm.shutdown() 771 os.remove(test_img) 772 os.remove(backing_img) 773 774 # This is a short performance test which is not run by default. 775 # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" 776 def perf_test_throughput(self): 777 self.assert_no_active_block_jobs() 778 779 result = self.vm.qmp('block-stream', device='drive0') 780 self.assert_qmp(result, 'return', {}) 781 782 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 783 self.assert_qmp(result, 'return', {}) 784 785 self.wait_until_completed() 786 787 self.assert_no_active_block_jobs() 788 789 def test_set_speed(self): 790 self.assert_no_active_block_jobs() 791 792 self.vm.pause_drive('drive0') 793 result = self.vm.qmp('block-stream', device='drive0') 794 self.assert_qmp(result, 'return', {}) 795 796 # Default speed is 0 797 result = self.vm.qmp('query-block-jobs') 798 self.assert_qmp(result, 'return[0]/device', 'drive0') 799 self.assert_qmp(result, 'return[0]/speed', 0) 800 801 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 802 self.assert_qmp(result, 'return', {}) 803 804 # Ensure the speed we set was accepted 805 result = self.vm.qmp('query-block-jobs') 806 self.assert_qmp(result, 'return[0]/device', 'drive0') 807 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 808 809 self.cancel_and_wait(resume=True) 810 self.vm.pause_drive('drive0') 811 812 # Check setting speed in block-stream works 813 result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024) 814 self.assert_qmp(result, 'return', {}) 815 816 result = self.vm.qmp('query-block-jobs') 817 self.assert_qmp(result, 'return[0]/device', 'drive0') 818 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 819 820 self.cancel_and_wait(resume=True) 821 822 def test_set_speed_invalid(self): 823 self.assert_no_active_block_jobs() 824 825 result = self.vm.qmp('block-stream', device='drive0', speed=-1) 826 self.assert_qmp(result, 'error/class', 'GenericError') 827 828 self.assert_no_active_block_jobs() 829 830 self.vm.pause_drive('drive0') 831 result = self.vm.qmp('block-stream', device='drive0') 832 self.assert_qmp(result, 'return', {}) 833 834 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 835 self.assert_qmp(result, 'error/class', 'GenericError') 836 837 self.cancel_and_wait(resume=True) 838 839if __name__ == '__main__': 840 iotests.main(supported_fmts=['qcow2', 'qed']) 841