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 currently blocks the active layer even if it's not used 291 result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0') 292 self.assert_qmp(result, 'error/class', 'GenericError') 293 294 self.wait_until_completed(drive='commit-node3') 295 296 # Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter. 297 # Internally this uses a mirror block job, hence the separate test case. 298 def test_overlapping_3(self): 299 self.assertLessEqual(8, self.num_imgs) 300 self.assert_no_active_block_jobs() 301 302 # Set a speed limit to make sure that this job blocks the rest 303 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024) 304 self.assert_qmp(result, 'return', {}) 305 306 result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6') 307 self.assert_qmp(result, 'error/class', 'GenericError') 308 309 event = self.vm.get_qmp_event(wait=True) 310 self.assertEqual(event['event'], 'BLOCK_JOB_READY') 311 self.assert_qmp(event, 'data/device', 'commit-drive0') 312 self.assert_qmp(event, 'data/type', 'commit') 313 self.assert_qmp_absent(event, 'data/error') 314 315 result = self.vm.qmp('block-job-complete', device='commit-drive0') 316 self.assert_qmp(result, 'return', {}) 317 318 self.wait_until_completed(drive='commit-drive0') 319 320 # Test a block-stream and a block-commit job in parallel 321 def test_stream_commit(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', 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 # Test the base_node parameter 352 def test_stream_base_node_name(self): 353 self.assert_no_active_block_jobs() 354 355 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]), 356 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]), 357 'image file map matches backing file before streaming') 358 359 # Error: the base node does not exist 360 result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream') 361 self.assert_qmp(result, 'error/class', 'GenericError') 362 363 # Error: the base node is not a backing file of the top node 364 result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream') 365 self.assert_qmp(result, 'error/class', 'GenericError') 366 367 # Error: the base node is the same as the top node 368 result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream') 369 self.assert_qmp(result, 'error/class', 'GenericError') 370 371 # Error: cannot specify 'base' and 'base-node' at the same time 372 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream') 373 self.assert_qmp(result, 'error/class', 'GenericError') 374 375 # Success: the base node is a backing file of the top node 376 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream') 377 self.assert_qmp(result, 'return', {}) 378 379 self.wait_until_completed(drive='stream') 380 381 self.assert_no_active_block_jobs() 382 self.vm.shutdown() 383 384 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]), 385 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]), 386 'image file map matches backing file after streaming') 387 388class TestQuorum(iotests.QMPTestCase): 389 num_children = 3 390 children = [] 391 backing = [] 392 393 def setUp(self): 394 opts = ['driver=quorum', 'vote-threshold=2'] 395 396 # Initialize file names and command-line options 397 for i in range(self.num_children): 398 child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i) 399 backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i) 400 self.children.append(child_img) 401 self.backing.append(backing_img) 402 qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') 403 qemu_io('-f', iotests.imgfmt, 404 '-c', 'write -P 0x55 0 1024', backing_img) 405 qemu_img('create', '-f', iotests.imgfmt, 406 '-o', 'backing_file=%s' % backing_img, child_img) 407 opts.append("children.%d.file.filename=%s" % (i, child_img)) 408 opts.append("children.%d.node-name=node%d" % (i, i)) 409 410 # Attach the drive to the VM 411 self.vm = iotests.VM() 412 self.vm.add_drive(path = None, opts = ','.join(opts)) 413 self.vm.launch() 414 415 def tearDown(self): 416 self.vm.shutdown() 417 for img in self.children: 418 os.remove(img) 419 for img in self.backing: 420 os.remove(img) 421 422 def test_stream_quorum(self): 423 if not iotests.supports_quorum(): 424 return 425 426 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]), 427 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]), 428 'image file map matches backing file before streaming') 429 430 self.assert_no_active_block_jobs() 431 432 result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0') 433 self.assert_qmp(result, 'return', {}) 434 435 self.wait_until_completed(drive='stream-node0') 436 437 self.assert_no_active_block_jobs() 438 self.vm.shutdown() 439 440 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]), 441 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]), 442 'image file map does not match backing file after streaming') 443 444class TestSmallerBackingFile(iotests.QMPTestCase): 445 backing_len = 1 * 1024 * 1024 # MB 446 image_len = 2 * backing_len 447 448 def setUp(self): 449 iotests.create_image(backing_img, self.backing_len) 450 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len)) 451 self.vm = iotests.VM().add_drive(test_img) 452 self.vm.launch() 453 454 # If this hangs, then you are missing a fix to complete streaming when the 455 # end of the backing file is reached. 456 def test_stream(self): 457 self.assert_no_active_block_jobs() 458 459 result = self.vm.qmp('block-stream', device='drive0') 460 self.assert_qmp(result, 'return', {}) 461 462 self.wait_until_completed() 463 464 self.assert_no_active_block_jobs() 465 self.vm.shutdown() 466 467class TestErrors(iotests.QMPTestCase): 468 image_len = 2 * 1024 * 1024 # MB 469 470 # this should match STREAM_BUFFER_SIZE/512 in block/stream.c 471 STREAM_BUFFER_SIZE = 512 * 1024 472 473 def create_blkdebug_file(self, name, event, errno): 474 file = open(name, 'w') 475 file.write(''' 476[inject-error] 477state = "1" 478event = "%s" 479errno = "%d" 480immediately = "off" 481once = "on" 482sector = "%d" 483 484[set-state] 485state = "1" 486event = "%s" 487new_state = "2" 488 489[set-state] 490state = "2" 491event = "%s" 492new_state = "1" 493''' % (event, errno, self.STREAM_BUFFER_SIZE / 512, event, event)) 494 file.close() 495 496class TestEIO(TestErrors): 497 def setUp(self): 498 self.blkdebug_file = backing_img + ".blkdebug" 499 iotests.create_image(backing_img, TestErrors.image_len) 500 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 501 qemu_img('create', '-f', iotests.imgfmt, 502 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 503 % (self.blkdebug_file, backing_img), 504 test_img) 505 self.vm = iotests.VM().add_drive(test_img) 506 self.vm.launch() 507 508 def tearDown(self): 509 self.vm.shutdown() 510 os.remove(test_img) 511 os.remove(backing_img) 512 os.remove(self.blkdebug_file) 513 514 def test_report(self): 515 self.assert_no_active_block_jobs() 516 517 result = self.vm.qmp('block-stream', device='drive0') 518 self.assert_qmp(result, 'return', {}) 519 520 completed = False 521 error = False 522 while not completed: 523 for event in self.vm.get_qmp_events(wait=True): 524 if event['event'] == 'BLOCK_JOB_ERROR': 525 self.assert_qmp(event, 'data/device', 'drive0') 526 self.assert_qmp(event, 'data/operation', 'read') 527 error = True 528 elif event['event'] == 'BLOCK_JOB_COMPLETED': 529 self.assertTrue(error, 'job completed unexpectedly') 530 self.assert_qmp(event, 'data/type', 'stream') 531 self.assert_qmp(event, 'data/device', 'drive0') 532 self.assert_qmp(event, 'data/error', 'Input/output error') 533 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 534 self.assert_qmp(event, 'data/len', self.image_len) 535 completed = True 536 537 self.assert_no_active_block_jobs() 538 self.vm.shutdown() 539 540 def test_ignore(self): 541 self.assert_no_active_block_jobs() 542 543 result = self.vm.qmp('block-stream', device='drive0', on_error='ignore') 544 self.assert_qmp(result, 'return', {}) 545 546 error = False 547 completed = False 548 while not completed: 549 for event in self.vm.get_qmp_events(wait=True): 550 if event['event'] == 'BLOCK_JOB_ERROR': 551 error = True 552 self.assert_qmp(event, 'data/device', 'drive0') 553 self.assert_qmp(event, 'data/operation', 'read') 554 result = self.vm.qmp('query-block-jobs') 555 if result == {'return': []}: 556 # Job finished too quickly 557 continue 558 self.assert_qmp(result, 'return[0]/paused', False) 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.image_len) 565 self.assert_qmp(event, 'data/len', self.image_len) 566 completed = True 567 568 self.assert_no_active_block_jobs() 569 self.vm.shutdown() 570 571 def test_stop(self): 572 self.assert_no_active_block_jobs() 573 574 result = self.vm.qmp('block-stream', device='drive0', on_error='stop') 575 self.assert_qmp(result, 'return', {}) 576 577 error = False 578 completed = False 579 while not completed: 580 for event in self.vm.get_qmp_events(wait=True): 581 if event['event'] == 'BLOCK_JOB_ERROR': 582 error = True 583 self.assert_qmp(event, 'data/device', 'drive0') 584 self.assert_qmp(event, 'data/operation', 'read') 585 586 result = self.vm.qmp('query-block-jobs') 587 self.assert_qmp(result, 'return[0]/paused', True) 588 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 589 self.assert_qmp(result, 'return[0]/io-status', 'failed') 590 591 result = self.vm.qmp('block-job-resume', device='drive0') 592 self.assert_qmp(result, 'return', {}) 593 594 result = self.vm.qmp('query-block-jobs') 595 if result == {'return': []}: 596 # Race; likely already finished. Check. 597 continue 598 self.assert_qmp(result, 'return[0]/paused', False) 599 self.assert_qmp(result, 'return[0]/io-status', 'ok') 600 elif event['event'] == 'BLOCK_JOB_COMPLETED': 601 self.assertTrue(error, 'job completed unexpectedly') 602 self.assert_qmp(event, 'data/type', 'stream') 603 self.assert_qmp(event, 'data/device', 'drive0') 604 self.assert_qmp_absent(event, 'data/error') 605 self.assert_qmp(event, 'data/offset', self.image_len) 606 self.assert_qmp(event, 'data/len', self.image_len) 607 completed = True 608 609 self.assert_no_active_block_jobs() 610 self.vm.shutdown() 611 612 def test_enospc(self): 613 self.assert_no_active_block_jobs() 614 615 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 616 self.assert_qmp(result, 'return', {}) 617 618 completed = False 619 error = False 620 while not completed: 621 for event in self.vm.get_qmp_events(wait=True): 622 if event['event'] == 'BLOCK_JOB_ERROR': 623 self.assert_qmp(event, 'data/device', 'drive0') 624 self.assert_qmp(event, 'data/operation', 'read') 625 error = True 626 elif event['event'] == 'BLOCK_JOB_COMPLETED': 627 self.assertTrue(error, 'job completed unexpectedly') 628 self.assert_qmp(event, 'data/type', 'stream') 629 self.assert_qmp(event, 'data/device', 'drive0') 630 self.assert_qmp(event, 'data/error', 'Input/output error') 631 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 632 self.assert_qmp(event, 'data/len', self.image_len) 633 completed = True 634 635 self.assert_no_active_block_jobs() 636 self.vm.shutdown() 637 638class TestENOSPC(TestErrors): 639 def setUp(self): 640 self.blkdebug_file = backing_img + ".blkdebug" 641 iotests.create_image(backing_img, TestErrors.image_len) 642 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28) 643 qemu_img('create', '-f', iotests.imgfmt, 644 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 645 % (self.blkdebug_file, backing_img), 646 test_img) 647 self.vm = iotests.VM().add_drive(test_img) 648 self.vm.launch() 649 650 def tearDown(self): 651 self.vm.shutdown() 652 os.remove(test_img) 653 os.remove(backing_img) 654 os.remove(self.blkdebug_file) 655 656 def test_enospc(self): 657 self.assert_no_active_block_jobs() 658 659 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 660 self.assert_qmp(result, 'return', {}) 661 662 error = False 663 completed = False 664 while not completed: 665 for event in self.vm.get_qmp_events(wait=True): 666 if event['event'] == 'BLOCK_JOB_ERROR': 667 self.assert_qmp(event, 'data/device', 'drive0') 668 self.assert_qmp(event, 'data/operation', 'read') 669 error = True 670 671 result = self.vm.qmp('query-block-jobs') 672 self.assert_qmp(result, 'return[0]/paused', True) 673 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 674 self.assert_qmp(result, 'return[0]/io-status', 'nospace') 675 676 result = self.vm.qmp('block-job-resume', device='drive0') 677 self.assert_qmp(result, 'return', {}) 678 679 result = self.vm.qmp('query-block-jobs') 680 if result == {'return': []}: 681 # Race; likely already finished. Check. 682 continue 683 self.assert_qmp(result, 'return[0]/paused', False) 684 self.assert_qmp(result, 'return[0]/io-status', 'ok') 685 elif event['event'] == 'BLOCK_JOB_COMPLETED': 686 self.assertTrue(error, 'job completed unexpectedly') 687 self.assert_qmp(event, 'data/type', 'stream') 688 self.assert_qmp(event, 'data/device', 'drive0') 689 self.assert_qmp_absent(event, 'data/error') 690 self.assert_qmp(event, 'data/offset', self.image_len) 691 self.assert_qmp(event, 'data/len', self.image_len) 692 completed = True 693 694 self.assert_no_active_block_jobs() 695 self.vm.shutdown() 696 697class TestStreamStop(iotests.QMPTestCase): 698 image_len = 8 * 1024 * 1024 * 1024 # GB 699 700 def setUp(self): 701 qemu_img('create', backing_img, str(TestStreamStop.image_len)) 702 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 703 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 704 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 705 self.vm = iotests.VM().add_drive("blkdebug::" + test_img) 706 self.vm.launch() 707 708 def tearDown(self): 709 self.vm.shutdown() 710 os.remove(test_img) 711 os.remove(backing_img) 712 713 def test_stream_stop(self): 714 self.assert_no_active_block_jobs() 715 716 self.vm.pause_drive('drive0') 717 result = self.vm.qmp('block-stream', device='drive0') 718 self.assert_qmp(result, 'return', {}) 719 720 time.sleep(0.1) 721 events = self.vm.get_qmp_events(wait=False) 722 self.assertEqual(events, [], 'unexpected QMP event: %s' % events) 723 724 self.cancel_and_wait(resume=True) 725 726class TestSetSpeed(iotests.QMPTestCase): 727 image_len = 80 * 1024 * 1024 # MB 728 729 def setUp(self): 730 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 731 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 732 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 733 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 734 self.vm = iotests.VM().add_drive('blkdebug::' + test_img) 735 self.vm.launch() 736 737 def tearDown(self): 738 self.vm.shutdown() 739 os.remove(test_img) 740 os.remove(backing_img) 741 742 # This is a short performance test which is not run by default. 743 # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" 744 def perf_test_throughput(self): 745 self.assert_no_active_block_jobs() 746 747 result = self.vm.qmp('block-stream', device='drive0') 748 self.assert_qmp(result, 'return', {}) 749 750 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 751 self.assert_qmp(result, 'return', {}) 752 753 self.wait_until_completed() 754 755 self.assert_no_active_block_jobs() 756 757 def test_set_speed(self): 758 self.assert_no_active_block_jobs() 759 760 self.vm.pause_drive('drive0') 761 result = self.vm.qmp('block-stream', device='drive0') 762 self.assert_qmp(result, 'return', {}) 763 764 # Default speed is 0 765 result = self.vm.qmp('query-block-jobs') 766 self.assert_qmp(result, 'return[0]/device', 'drive0') 767 self.assert_qmp(result, 'return[0]/speed', 0) 768 769 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 770 self.assert_qmp(result, 'return', {}) 771 772 # Ensure the speed we set was accepted 773 result = self.vm.qmp('query-block-jobs') 774 self.assert_qmp(result, 'return[0]/device', 'drive0') 775 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 776 777 self.cancel_and_wait(resume=True) 778 self.vm.pause_drive('drive0') 779 780 # Check setting speed in block-stream works 781 result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024) 782 self.assert_qmp(result, 'return', {}) 783 784 result = self.vm.qmp('query-block-jobs') 785 self.assert_qmp(result, 'return[0]/device', 'drive0') 786 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 787 788 self.cancel_and_wait(resume=True) 789 790 def test_set_speed_invalid(self): 791 self.assert_no_active_block_jobs() 792 793 result = self.vm.qmp('block-stream', device='drive0', speed=-1) 794 self.assert_qmp(result, 'error/class', 'GenericError') 795 796 self.assert_no_active_block_jobs() 797 798 self.vm.pause_drive('drive0') 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(resume=True) 806 807if __name__ == '__main__': 808 iotests.main(supported_fmts=['qcow2', 'qed']) 809