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 * 512 * 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 odd_img_indexes = [x for x in reversed(range(self.num_imgs)) if x % 2 == 1] 180 for i in range(len(odd_img_indexes)): 181 # Alternate between 256KB and 512KB. 182 # This way jobs will not finish in the same order they were created 183 num_kb = 256 + 256 * (i % 2) 184 qemu_io('-f', iotests.imgfmt, 185 '-c', 'write -P 0xFF %dk %dk' % (i * 512, num_kb), 186 self.imgs[odd_img_indexes[i]]) 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 # Here the stream job is supposed to finish quickly in order to reproduce 322 # the scenario that triggers the bug fixed in 3d5d319e1221 and 1a63a907507 323 def test_stream_commit_1(self): 324 self.assertLessEqual(8, self.num_imgs) 325 self.assert_no_active_block_jobs() 326 327 # Stream from node0 into node2 328 result = self.vm.qmp('block-stream', device='node2', base_node='node0', job_id='node2') 329 self.assert_qmp(result, 'return', {}) 330 331 # Commit from the active layer into node3 332 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3]) 333 self.assert_qmp(result, 'return', {}) 334 335 # Wait for all jobs to be finished. 336 pending_jobs = ['node2', 'drive0'] 337 while len(pending_jobs) > 0: 338 for event in self.vm.get_qmp_events(wait=True): 339 if event['event'] == 'BLOCK_JOB_COMPLETED': 340 node_name = self.dictpath(event, 'data/device') 341 self.assertTrue(node_name in pending_jobs) 342 self.assert_qmp_absent(event, 'data/error') 343 pending_jobs.remove(node_name) 344 if event['event'] == 'BLOCK_JOB_READY': 345 self.assert_qmp(event, 'data/device', 'drive0') 346 self.assert_qmp(event, 'data/type', 'commit') 347 self.assert_qmp_absent(event, 'data/error') 348 self.assertTrue('drive0' in pending_jobs) 349 self.vm.qmp('block-job-complete', device='drive0') 350 351 self.assert_no_active_block_jobs() 352 353 # This is similar to test_stream_commit_1 but both jobs are slowed 354 # down so they can run in parallel for a little while. 355 def test_stream_commit_2(self): 356 self.assertLessEqual(8, self.num_imgs) 357 self.assert_no_active_block_jobs() 358 359 # Stream from node0 into node4 360 result = self.vm.qmp('block-stream', device='node4', base_node='node0', job_id='node4', speed=1024*1024) 361 self.assert_qmp(result, 'return', {}) 362 363 # Commit from the active layer into node5 364 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[5], speed=1024*1024) 365 self.assert_qmp(result, 'return', {}) 366 367 # Wait for all jobs to be finished. 368 pending_jobs = ['node4', 'drive0'] 369 while len(pending_jobs) > 0: 370 for event in self.vm.get_qmp_events(wait=True): 371 if event['event'] == 'BLOCK_JOB_COMPLETED': 372 node_name = self.dictpath(event, 'data/device') 373 self.assertTrue(node_name in pending_jobs) 374 self.assert_qmp_absent(event, 'data/error') 375 pending_jobs.remove(node_name) 376 if event['event'] == 'BLOCK_JOB_READY': 377 self.assert_qmp(event, 'data/device', 'drive0') 378 self.assert_qmp(event, 'data/type', 'commit') 379 self.assert_qmp_absent(event, 'data/error') 380 self.assertTrue('drive0' in pending_jobs) 381 self.vm.qmp('block-job-complete', device='drive0') 382 383 self.assert_no_active_block_jobs() 384 385 # Test the base_node parameter 386 def test_stream_base_node_name(self): 387 self.assert_no_active_block_jobs() 388 389 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]), 390 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]), 391 'image file map matches backing file before streaming') 392 393 # Error: the base node does not exist 394 result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream') 395 self.assert_qmp(result, 'error/class', 'GenericError') 396 397 # Error: the base node is not a backing file of the top node 398 result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream') 399 self.assert_qmp(result, 'error/class', 'GenericError') 400 401 # Error: the base node is the same as the top node 402 result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream') 403 self.assert_qmp(result, 'error/class', 'GenericError') 404 405 # Error: cannot specify 'base' and 'base-node' at the same time 406 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream') 407 self.assert_qmp(result, 'error/class', 'GenericError') 408 409 # Success: the base node is a backing file of the top node 410 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream') 411 self.assert_qmp(result, 'return', {}) 412 413 self.wait_until_completed(drive='stream') 414 415 self.assert_no_active_block_jobs() 416 self.vm.shutdown() 417 418 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]), 419 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]), 420 'image file map matches backing file after streaming') 421 422class TestQuorum(iotests.QMPTestCase): 423 num_children = 3 424 children = [] 425 backing = [] 426 427 def setUp(self): 428 opts = ['driver=quorum', 'vote-threshold=2'] 429 430 # Initialize file names and command-line options 431 for i in range(self.num_children): 432 child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i) 433 backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i) 434 self.children.append(child_img) 435 self.backing.append(backing_img) 436 qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') 437 qemu_io('-f', iotests.imgfmt, 438 '-c', 'write -P 0x55 0 1024', backing_img) 439 qemu_img('create', '-f', iotests.imgfmt, 440 '-o', 'backing_file=%s' % backing_img, child_img) 441 opts.append("children.%d.file.filename=%s" % (i, child_img)) 442 opts.append("children.%d.node-name=node%d" % (i, i)) 443 444 # Attach the drive to the VM 445 self.vm = iotests.VM() 446 self.vm.add_drive(path = None, opts = ','.join(opts)) 447 self.vm.launch() 448 449 def tearDown(self): 450 self.vm.shutdown() 451 for img in self.children: 452 os.remove(img) 453 for img in self.backing: 454 os.remove(img) 455 456 def test_stream_quorum(self): 457 if not iotests.supports_quorum(): 458 return 459 460 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]), 461 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]), 462 'image file map matches backing file before streaming') 463 464 self.assert_no_active_block_jobs() 465 466 result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0') 467 self.assert_qmp(result, 'return', {}) 468 469 self.wait_until_completed(drive='stream-node0') 470 471 self.assert_no_active_block_jobs() 472 self.vm.shutdown() 473 474 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]), 475 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]), 476 'image file map does not match backing file after streaming') 477 478class TestSmallerBackingFile(iotests.QMPTestCase): 479 backing_len = 1 * 1024 * 1024 # MB 480 image_len = 2 * backing_len 481 482 def setUp(self): 483 iotests.create_image(backing_img, self.backing_len) 484 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len)) 485 self.vm = iotests.VM().add_drive(test_img) 486 self.vm.launch() 487 488 # If this hangs, then you are missing a fix to complete streaming when the 489 # end of the backing file is reached. 490 def test_stream(self): 491 self.assert_no_active_block_jobs() 492 493 result = self.vm.qmp('block-stream', device='drive0') 494 self.assert_qmp(result, 'return', {}) 495 496 self.wait_until_completed() 497 498 self.assert_no_active_block_jobs() 499 self.vm.shutdown() 500 501class TestErrors(iotests.QMPTestCase): 502 image_len = 2 * 1024 * 1024 # MB 503 504 # this should match STREAM_BUFFER_SIZE/512 in block/stream.c 505 STREAM_BUFFER_SIZE = 512 * 1024 506 507 def create_blkdebug_file(self, name, event, errno): 508 file = open(name, 'w') 509 file.write(''' 510[inject-error] 511state = "1" 512event = "%s" 513errno = "%d" 514immediately = "off" 515once = "on" 516sector = "%d" 517 518[set-state] 519state = "1" 520event = "%s" 521new_state = "2" 522 523[set-state] 524state = "2" 525event = "%s" 526new_state = "1" 527''' % (event, errno, self.STREAM_BUFFER_SIZE / 512, event, event)) 528 file.close() 529 530class TestEIO(TestErrors): 531 def setUp(self): 532 self.blkdebug_file = backing_img + ".blkdebug" 533 iotests.create_image(backing_img, TestErrors.image_len) 534 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 535 qemu_img('create', '-f', iotests.imgfmt, 536 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 537 % (self.blkdebug_file, backing_img), 538 test_img) 539 self.vm = iotests.VM().add_drive(test_img) 540 self.vm.launch() 541 542 def tearDown(self): 543 self.vm.shutdown() 544 os.remove(test_img) 545 os.remove(backing_img) 546 os.remove(self.blkdebug_file) 547 548 def test_report(self): 549 self.assert_no_active_block_jobs() 550 551 result = self.vm.qmp('block-stream', device='drive0') 552 self.assert_qmp(result, 'return', {}) 553 554 completed = False 555 error = False 556 while not completed: 557 for event in self.vm.get_qmp_events(wait=True): 558 if event['event'] == 'BLOCK_JOB_ERROR': 559 self.assert_qmp(event, 'data/device', 'drive0') 560 self.assert_qmp(event, 'data/operation', 'read') 561 error = True 562 elif event['event'] == 'BLOCK_JOB_COMPLETED': 563 self.assertTrue(error, 'job completed unexpectedly') 564 self.assert_qmp(event, 'data/type', 'stream') 565 self.assert_qmp(event, 'data/device', 'drive0') 566 self.assert_qmp(event, 'data/error', 'Input/output error') 567 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 568 self.assert_qmp(event, 'data/len', self.image_len) 569 completed = True 570 571 self.assert_no_active_block_jobs() 572 self.vm.shutdown() 573 574 def test_ignore(self): 575 self.assert_no_active_block_jobs() 576 577 result = self.vm.qmp('block-stream', device='drive0', on_error='ignore') 578 self.assert_qmp(result, 'return', {}) 579 580 error = False 581 completed = False 582 while not completed: 583 for event in self.vm.get_qmp_events(wait=True): 584 if event['event'] == 'BLOCK_JOB_ERROR': 585 error = True 586 self.assert_qmp(event, 'data/device', 'drive0') 587 self.assert_qmp(event, 'data/operation', 'read') 588 result = self.vm.qmp('query-block-jobs') 589 if result == {'return': []}: 590 # Job finished too quickly 591 continue 592 self.assert_qmp(result, 'return[0]/paused', False) 593 elif event['event'] == 'BLOCK_JOB_COMPLETED': 594 self.assertTrue(error, 'job completed unexpectedly') 595 self.assert_qmp(event, 'data/type', 'stream') 596 self.assert_qmp(event, 'data/device', 'drive0') 597 self.assert_qmp(event, 'data/error', 'Input/output error') 598 self.assert_qmp(event, 'data/offset', self.image_len) 599 self.assert_qmp(event, 'data/len', self.image_len) 600 completed = True 601 602 self.assert_no_active_block_jobs() 603 self.vm.shutdown() 604 605 def test_stop(self): 606 self.assert_no_active_block_jobs() 607 608 result = self.vm.qmp('block-stream', device='drive0', on_error='stop') 609 self.assert_qmp(result, 'return', {}) 610 611 error = False 612 completed = False 613 while not completed: 614 for event in self.vm.get_qmp_events(wait=True): 615 if event['event'] == 'BLOCK_JOB_ERROR': 616 error = True 617 self.assert_qmp(event, 'data/device', 'drive0') 618 self.assert_qmp(event, 'data/operation', 'read') 619 620 result = self.vm.qmp('query-block-jobs') 621 self.assert_qmp(result, 'return[0]/paused', True) 622 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 623 self.assert_qmp(result, 'return[0]/io-status', 'failed') 624 625 result = self.vm.qmp('block-job-resume', device='drive0') 626 self.assert_qmp(result, 'return', {}) 627 628 result = self.vm.qmp('query-block-jobs') 629 if result == {'return': []}: 630 # Race; likely already finished. Check. 631 continue 632 self.assert_qmp(result, 'return[0]/paused', False) 633 self.assert_qmp(result, 'return[0]/io-status', 'ok') 634 elif event['event'] == 'BLOCK_JOB_COMPLETED': 635 self.assertTrue(error, 'job completed unexpectedly') 636 self.assert_qmp(event, 'data/type', 'stream') 637 self.assert_qmp(event, 'data/device', 'drive0') 638 self.assert_qmp_absent(event, 'data/error') 639 self.assert_qmp(event, 'data/offset', self.image_len) 640 self.assert_qmp(event, 'data/len', self.image_len) 641 completed = True 642 643 self.assert_no_active_block_jobs() 644 self.vm.shutdown() 645 646 def test_enospc(self): 647 self.assert_no_active_block_jobs() 648 649 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 650 self.assert_qmp(result, 'return', {}) 651 652 completed = False 653 error = False 654 while not completed: 655 for event in self.vm.get_qmp_events(wait=True): 656 if event['event'] == 'BLOCK_JOB_ERROR': 657 self.assert_qmp(event, 'data/device', 'drive0') 658 self.assert_qmp(event, 'data/operation', 'read') 659 error = True 660 elif event['event'] == 'BLOCK_JOB_COMPLETED': 661 self.assertTrue(error, 'job completed unexpectedly') 662 self.assert_qmp(event, 'data/type', 'stream') 663 self.assert_qmp(event, 'data/device', 'drive0') 664 self.assert_qmp(event, 'data/error', 'Input/output error') 665 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 666 self.assert_qmp(event, 'data/len', self.image_len) 667 completed = True 668 669 self.assert_no_active_block_jobs() 670 self.vm.shutdown() 671 672class TestENOSPC(TestErrors): 673 def setUp(self): 674 self.blkdebug_file = backing_img + ".blkdebug" 675 iotests.create_image(backing_img, TestErrors.image_len) 676 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28) 677 qemu_img('create', '-f', iotests.imgfmt, 678 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 679 % (self.blkdebug_file, backing_img), 680 test_img) 681 self.vm = iotests.VM().add_drive(test_img) 682 self.vm.launch() 683 684 def tearDown(self): 685 self.vm.shutdown() 686 os.remove(test_img) 687 os.remove(backing_img) 688 os.remove(self.blkdebug_file) 689 690 def test_enospc(self): 691 self.assert_no_active_block_jobs() 692 693 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 694 self.assert_qmp(result, 'return', {}) 695 696 error = False 697 completed = False 698 while not completed: 699 for event in self.vm.get_qmp_events(wait=True): 700 if event['event'] == 'BLOCK_JOB_ERROR': 701 self.assert_qmp(event, 'data/device', 'drive0') 702 self.assert_qmp(event, 'data/operation', 'read') 703 error = True 704 705 result = self.vm.qmp('query-block-jobs') 706 self.assert_qmp(result, 'return[0]/paused', True) 707 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 708 self.assert_qmp(result, 'return[0]/io-status', 'nospace') 709 710 result = self.vm.qmp('block-job-resume', device='drive0') 711 self.assert_qmp(result, 'return', {}) 712 713 result = self.vm.qmp('query-block-jobs') 714 if result == {'return': []}: 715 # Race; likely already finished. Check. 716 continue 717 self.assert_qmp(result, 'return[0]/paused', False) 718 self.assert_qmp(result, 'return[0]/io-status', 'ok') 719 elif event['event'] == 'BLOCK_JOB_COMPLETED': 720 self.assertTrue(error, 'job completed unexpectedly') 721 self.assert_qmp(event, 'data/type', 'stream') 722 self.assert_qmp(event, 'data/device', 'drive0') 723 self.assert_qmp_absent(event, 'data/error') 724 self.assert_qmp(event, 'data/offset', self.image_len) 725 self.assert_qmp(event, 'data/len', self.image_len) 726 completed = True 727 728 self.assert_no_active_block_jobs() 729 self.vm.shutdown() 730 731class TestStreamStop(iotests.QMPTestCase): 732 image_len = 8 * 1024 * 1024 * 1024 # GB 733 734 def setUp(self): 735 qemu_img('create', backing_img, str(TestStreamStop.image_len)) 736 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 737 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 738 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 739 self.vm = iotests.VM().add_drive("blkdebug::" + test_img) 740 self.vm.launch() 741 742 def tearDown(self): 743 self.vm.shutdown() 744 os.remove(test_img) 745 os.remove(backing_img) 746 747 def test_stream_stop(self): 748 self.assert_no_active_block_jobs() 749 750 self.vm.pause_drive('drive0') 751 result = self.vm.qmp('block-stream', device='drive0') 752 self.assert_qmp(result, 'return', {}) 753 754 time.sleep(0.1) 755 events = self.vm.get_qmp_events(wait=False) 756 self.assertEqual(events, [], 'unexpected QMP event: %s' % events) 757 758 self.cancel_and_wait(resume=True) 759 760class TestSetSpeed(iotests.QMPTestCase): 761 image_len = 80 * 1024 * 1024 # MB 762 763 def setUp(self): 764 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 765 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 766 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 767 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 768 self.vm = iotests.VM().add_drive('blkdebug::' + test_img) 769 self.vm.launch() 770 771 def tearDown(self): 772 self.vm.shutdown() 773 os.remove(test_img) 774 os.remove(backing_img) 775 776 # This is a short performance test which is not run by default. 777 # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" 778 def perf_test_throughput(self): 779 self.assert_no_active_block_jobs() 780 781 result = self.vm.qmp('block-stream', device='drive0') 782 self.assert_qmp(result, 'return', {}) 783 784 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 785 self.assert_qmp(result, 'return', {}) 786 787 self.wait_until_completed() 788 789 self.assert_no_active_block_jobs() 790 791 def test_set_speed(self): 792 self.assert_no_active_block_jobs() 793 794 self.vm.pause_drive('drive0') 795 result = self.vm.qmp('block-stream', device='drive0') 796 self.assert_qmp(result, 'return', {}) 797 798 # Default speed is 0 799 result = self.vm.qmp('query-block-jobs') 800 self.assert_qmp(result, 'return[0]/device', 'drive0') 801 self.assert_qmp(result, 'return[0]/speed', 0) 802 803 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 804 self.assert_qmp(result, 'return', {}) 805 806 # Ensure the speed we set was accepted 807 result = self.vm.qmp('query-block-jobs') 808 self.assert_qmp(result, 'return[0]/device', 'drive0') 809 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 810 811 self.cancel_and_wait(resume=True) 812 self.vm.pause_drive('drive0') 813 814 # Check setting speed in block-stream works 815 result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024) 816 self.assert_qmp(result, 'return', {}) 817 818 result = self.vm.qmp('query-block-jobs') 819 self.assert_qmp(result, 'return[0]/device', 'drive0') 820 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 821 822 self.cancel_and_wait(resume=True) 823 824 def test_set_speed_invalid(self): 825 self.assert_no_active_block_jobs() 826 827 result = self.vm.qmp('block-stream', device='drive0', speed=-1) 828 self.assert_qmp(result, 'error/class', 'GenericError') 829 830 self.assert_no_active_block_jobs() 831 832 self.vm.pause_drive('drive0') 833 result = self.vm.qmp('block-stream', device='drive0') 834 self.assert_qmp(result, 'return', {}) 835 836 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 837 self.assert_qmp(result, 'error/class', 'GenericError') 838 839 self.cancel_and_wait(resume=True) 840 841if __name__ == '__main__': 842 iotests.main(supported_fmts=['qcow2', 'qed']) 843