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.event_wait(name='BLOCK_JOB_READY') 308 self.assert_qmp(event, 'data/device', 'commit-drive0') 309 self.assert_qmp(event, 'data/type', 'commit') 310 self.assert_qmp_absent(event, 'data/error') 311 312 result = self.vm.qmp('block-job-complete', device='commit-drive0') 313 self.assert_qmp(result, 'return', {}) 314 315 self.wait_until_completed(drive='commit-drive0') 316 317 # Test a block-stream and a block-commit job in parallel 318 # Here the stream job is supposed to finish quickly in order to reproduce 319 # the scenario that triggers the bug fixed in 3d5d319e1221 and 1a63a907507 320 def test_stream_commit_1(self): 321 self.assertLessEqual(8, self.num_imgs) 322 self.assert_no_active_block_jobs() 323 324 # Stream from node0 into node2 325 result = self.vm.qmp('block-stream', device='node2', base_node='node0', job_id='node2') 326 self.assert_qmp(result, 'return', {}) 327 328 # Commit from the active layer into node3 329 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3]) 330 self.assert_qmp(result, 'return', {}) 331 332 # Wait for all jobs to be finished. 333 pending_jobs = ['node2', 'drive0'] 334 while len(pending_jobs) > 0: 335 for event in self.vm.get_qmp_events(wait=True): 336 if event['event'] == 'BLOCK_JOB_COMPLETED': 337 node_name = self.dictpath(event, 'data/device') 338 self.assertTrue(node_name in pending_jobs) 339 self.assert_qmp_absent(event, 'data/error') 340 pending_jobs.remove(node_name) 341 if event['event'] == 'BLOCK_JOB_READY': 342 self.assert_qmp(event, 'data/device', 'drive0') 343 self.assert_qmp(event, 'data/type', 'commit') 344 self.assert_qmp_absent(event, 'data/error') 345 self.assertTrue('drive0' in pending_jobs) 346 self.vm.qmp('block-job-complete', device='drive0') 347 348 self.assert_no_active_block_jobs() 349 350 # This is similar to test_stream_commit_1 but both jobs are slowed 351 # down so they can run in parallel for a little while. 352 def test_stream_commit_2(self): 353 self.assertLessEqual(8, self.num_imgs) 354 self.assert_no_active_block_jobs() 355 356 # Stream from node0 into node4 357 result = self.vm.qmp('block-stream', device='node4', base_node='node0', job_id='node4', speed=1024*1024) 358 self.assert_qmp(result, 'return', {}) 359 360 # Commit from the active layer into node5 361 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[5], speed=1024*1024) 362 self.assert_qmp(result, 'return', {}) 363 364 # Wait for all jobs to be finished. 365 pending_jobs = ['node4', 'drive0'] 366 while len(pending_jobs) > 0: 367 for event in self.vm.get_qmp_events(wait=True): 368 if event['event'] == 'BLOCK_JOB_COMPLETED': 369 node_name = self.dictpath(event, 'data/device') 370 self.assertTrue(node_name in pending_jobs) 371 self.assert_qmp_absent(event, 'data/error') 372 pending_jobs.remove(node_name) 373 if event['event'] == 'BLOCK_JOB_READY': 374 self.assert_qmp(event, 'data/device', 'drive0') 375 self.assert_qmp(event, 'data/type', 'commit') 376 self.assert_qmp_absent(event, 'data/error') 377 self.assertTrue('drive0' in pending_jobs) 378 self.vm.qmp('block-job-complete', device='drive0') 379 380 self.assert_no_active_block_jobs() 381 382 # Test the base_node parameter 383 def test_stream_base_node_name(self): 384 self.assert_no_active_block_jobs() 385 386 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]), 387 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]), 388 'image file map matches backing file before streaming') 389 390 # Error: the base node does not exist 391 result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream') 392 self.assert_qmp(result, 'error/class', 'GenericError') 393 394 # Error: the base node is not a backing file of the top node 395 result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream') 396 self.assert_qmp(result, 'error/class', 'GenericError') 397 398 # Error: the base node is the same as the top node 399 result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream') 400 self.assert_qmp(result, 'error/class', 'GenericError') 401 402 # Error: cannot specify 'base' and 'base-node' at the same time 403 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream') 404 self.assert_qmp(result, 'error/class', 'GenericError') 405 406 # Success: the base node is a backing file of the top node 407 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream') 408 self.assert_qmp(result, 'return', {}) 409 410 self.wait_until_completed(drive='stream') 411 412 self.assert_no_active_block_jobs() 413 self.vm.shutdown() 414 415 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]), 416 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]), 417 'image file map matches backing file after streaming') 418 419class TestQuorum(iotests.QMPTestCase): 420 num_children = 3 421 children = [] 422 backing = [] 423 424 def setUp(self): 425 opts = ['driver=quorum', 'vote-threshold=2'] 426 427 # Initialize file names and command-line options 428 for i in range(self.num_children): 429 child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i) 430 backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i) 431 self.children.append(child_img) 432 self.backing.append(backing_img) 433 qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') 434 qemu_io('-f', iotests.imgfmt, 435 '-c', 'write -P 0x55 0 1024', backing_img) 436 qemu_img('create', '-f', iotests.imgfmt, 437 '-o', 'backing_file=%s' % backing_img, child_img) 438 opts.append("children.%d.file.filename=%s" % (i, child_img)) 439 opts.append("children.%d.node-name=node%d" % (i, i)) 440 441 # Attach the drive to the VM 442 self.vm = iotests.VM() 443 self.vm.add_drive(path = None, opts = ','.join(opts)) 444 self.vm.launch() 445 446 def tearDown(self): 447 self.vm.shutdown() 448 for img in self.children: 449 os.remove(img) 450 for img in self.backing: 451 os.remove(img) 452 453 def test_stream_quorum(self): 454 if not iotests.supports_quorum(): 455 return 456 457 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]), 458 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]), 459 'image file map matches backing file before streaming') 460 461 self.assert_no_active_block_jobs() 462 463 result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0') 464 self.assert_qmp(result, 'return', {}) 465 466 self.wait_until_completed(drive='stream-node0') 467 468 self.assert_no_active_block_jobs() 469 self.vm.shutdown() 470 471 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]), 472 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]), 473 'image file map does not match backing file after streaming') 474 475class TestSmallerBackingFile(iotests.QMPTestCase): 476 backing_len = 1 * 1024 * 1024 # MB 477 image_len = 2 * backing_len 478 479 def setUp(self): 480 iotests.create_image(backing_img, self.backing_len) 481 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len)) 482 self.vm = iotests.VM().add_drive(test_img) 483 self.vm.launch() 484 485 # If this hangs, then you are missing a fix to complete streaming when the 486 # end of the backing file is reached. 487 def test_stream(self): 488 self.assert_no_active_block_jobs() 489 490 result = self.vm.qmp('block-stream', device='drive0') 491 self.assert_qmp(result, 'return', {}) 492 493 self.wait_until_completed() 494 495 self.assert_no_active_block_jobs() 496 self.vm.shutdown() 497 498class TestErrors(iotests.QMPTestCase): 499 image_len = 2 * 1024 * 1024 # MB 500 501 # this should match STREAM_BUFFER_SIZE/512 in block/stream.c 502 STREAM_BUFFER_SIZE = 512 * 1024 503 504 def create_blkdebug_file(self, name, event, errno): 505 file = open(name, 'w') 506 file.write(''' 507[inject-error] 508state = "1" 509event = "%s" 510errno = "%d" 511immediately = "off" 512once = "on" 513sector = "%d" 514 515[set-state] 516state = "1" 517event = "%s" 518new_state = "2" 519 520[set-state] 521state = "2" 522event = "%s" 523new_state = "1" 524''' % (event, errno, self.STREAM_BUFFER_SIZE // 512, event, event)) 525 file.close() 526 527class TestEIO(TestErrors): 528 def setUp(self): 529 self.blkdebug_file = backing_img + ".blkdebug" 530 iotests.create_image(backing_img, TestErrors.image_len) 531 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 532 qemu_img('create', '-f', iotests.imgfmt, 533 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 534 % (self.blkdebug_file, backing_img), 535 test_img) 536 self.vm = iotests.VM().add_drive(test_img) 537 self.vm.launch() 538 539 def tearDown(self): 540 self.vm.shutdown() 541 os.remove(test_img) 542 os.remove(backing_img) 543 os.remove(self.blkdebug_file) 544 545 def test_report(self): 546 self.assert_no_active_block_jobs() 547 548 result = self.vm.qmp('block-stream', device='drive0') 549 self.assert_qmp(result, 'return', {}) 550 551 completed = False 552 error = False 553 while not completed: 554 for event in self.vm.get_qmp_events(wait=True): 555 if event['event'] == 'BLOCK_JOB_ERROR': 556 self.assert_qmp(event, 'data/device', 'drive0') 557 self.assert_qmp(event, 'data/operation', 'read') 558 error = True 559 elif event['event'] == 'BLOCK_JOB_COMPLETED': 560 self.assertTrue(error, 'job completed unexpectedly') 561 self.assert_qmp(event, 'data/type', 'stream') 562 self.assert_qmp(event, 'data/device', 'drive0') 563 self.assert_qmp(event, 'data/error', 'Input/output error') 564 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 565 self.assert_qmp(event, 'data/len', self.image_len) 566 completed = True 567 elif event['event'] == 'JOB_STATUS_CHANGE': 568 self.assert_qmp(event, 'data/id', 'drive0') 569 570 self.assert_no_active_block_jobs() 571 self.vm.shutdown() 572 573 def test_ignore(self): 574 self.assert_no_active_block_jobs() 575 576 result = self.vm.qmp('block-stream', device='drive0', on_error='ignore') 577 self.assert_qmp(result, 'return', {}) 578 579 error = False 580 completed = False 581 while not completed: 582 for event in self.vm.get_qmp_events(wait=True): 583 if event['event'] == 'BLOCK_JOB_ERROR': 584 error = True 585 self.assert_qmp(event, 'data/device', 'drive0') 586 self.assert_qmp(event, 'data/operation', 'read') 587 result = self.vm.qmp('query-block-jobs') 588 if result == {'return': []}: 589 # Job finished too quickly 590 continue 591 self.assert_qmp(result, 'return[0]/paused', False) 592 elif event['event'] == 'BLOCK_JOB_COMPLETED': 593 self.assertTrue(error, 'job completed unexpectedly') 594 self.assert_qmp(event, 'data/type', 'stream') 595 self.assert_qmp(event, 'data/device', 'drive0') 596 self.assert_qmp(event, 'data/error', 'Input/output error') 597 self.assert_qmp(event, 'data/offset', self.image_len) 598 self.assert_qmp(event, 'data/len', self.image_len) 599 completed = True 600 elif event['event'] == 'JOB_STATUS_CHANGE': 601 self.assert_qmp(event, 'data/id', 'drive0') 602 603 self.assert_no_active_block_jobs() 604 self.vm.shutdown() 605 606 def test_stop(self): 607 self.assert_no_active_block_jobs() 608 609 result = self.vm.qmp('block-stream', device='drive0', on_error='stop') 610 self.assert_qmp(result, 'return', {}) 611 612 error = False 613 completed = False 614 while not completed: 615 for event in self.vm.get_qmp_events(wait=True): 616 if event['event'] == 'BLOCK_JOB_ERROR': 617 error = True 618 self.assert_qmp(event, 'data/device', 'drive0') 619 self.assert_qmp(event, 'data/operation', 'read') 620 621 result = self.vm.qmp('query-block-jobs') 622 self.assert_qmp(result, 'return[0]/paused', True) 623 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 624 self.assert_qmp(result, 'return[0]/io-status', 'failed') 625 626 result = self.vm.qmp('block-job-resume', device='drive0') 627 self.assert_qmp(result, 'return', {}) 628 629 result = self.vm.qmp('query-block-jobs') 630 if result == {'return': []}: 631 # Race; likely already finished. Check. 632 continue 633 self.assert_qmp(result, 'return[0]/paused', False) 634 self.assert_qmp(result, 'return[0]/io-status', 'ok') 635 elif event['event'] == 'BLOCK_JOB_COMPLETED': 636 self.assertTrue(error, 'job completed unexpectedly') 637 self.assert_qmp(event, 'data/type', 'stream') 638 self.assert_qmp(event, 'data/device', 'drive0') 639 self.assert_qmp_absent(event, 'data/error') 640 self.assert_qmp(event, 'data/offset', self.image_len) 641 self.assert_qmp(event, 'data/len', self.image_len) 642 completed = True 643 elif event['event'] == 'JOB_STATUS_CHANGE': 644 self.assert_qmp(event, 'data/id', 'drive0') 645 646 self.assert_no_active_block_jobs() 647 self.vm.shutdown() 648 649 def test_enospc(self): 650 self.assert_no_active_block_jobs() 651 652 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 653 self.assert_qmp(result, 'return', {}) 654 655 completed = False 656 error = False 657 while not completed: 658 for event in self.vm.get_qmp_events(wait=True): 659 if event['event'] == 'BLOCK_JOB_ERROR': 660 self.assert_qmp(event, 'data/device', 'drive0') 661 self.assert_qmp(event, 'data/operation', 'read') 662 error = True 663 elif event['event'] == 'BLOCK_JOB_COMPLETED': 664 self.assertTrue(error, 'job completed unexpectedly') 665 self.assert_qmp(event, 'data/type', 'stream') 666 self.assert_qmp(event, 'data/device', 'drive0') 667 self.assert_qmp(event, 'data/error', 'Input/output error') 668 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 669 self.assert_qmp(event, 'data/len', self.image_len) 670 completed = True 671 elif event['event'] == 'JOB_STATUS_CHANGE': 672 self.assert_qmp(event, 'data/id', 'drive0') 673 674 self.assert_no_active_block_jobs() 675 self.vm.shutdown() 676 677class TestENOSPC(TestErrors): 678 def setUp(self): 679 self.blkdebug_file = backing_img + ".blkdebug" 680 iotests.create_image(backing_img, TestErrors.image_len) 681 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28) 682 qemu_img('create', '-f', iotests.imgfmt, 683 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 684 % (self.blkdebug_file, backing_img), 685 test_img) 686 self.vm = iotests.VM().add_drive(test_img) 687 self.vm.launch() 688 689 def tearDown(self): 690 self.vm.shutdown() 691 os.remove(test_img) 692 os.remove(backing_img) 693 os.remove(self.blkdebug_file) 694 695 def test_enospc(self): 696 self.assert_no_active_block_jobs() 697 698 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 699 self.assert_qmp(result, 'return', {}) 700 701 error = False 702 completed = False 703 while not completed: 704 for event in self.vm.get_qmp_events(wait=True): 705 if event['event'] == 'BLOCK_JOB_ERROR': 706 self.assert_qmp(event, 'data/device', 'drive0') 707 self.assert_qmp(event, 'data/operation', 'read') 708 error = True 709 710 result = self.vm.qmp('query-block-jobs') 711 self.assert_qmp(result, 'return[0]/paused', True) 712 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 713 self.assert_qmp(result, 'return[0]/io-status', 'nospace') 714 715 result = self.vm.qmp('block-job-resume', device='drive0') 716 self.assert_qmp(result, 'return', {}) 717 718 result = self.vm.qmp('query-block-jobs') 719 if result == {'return': []}: 720 # Race; likely already finished. Check. 721 continue 722 self.assert_qmp(result, 'return[0]/paused', False) 723 self.assert_qmp(result, 'return[0]/io-status', 'ok') 724 elif event['event'] == 'BLOCK_JOB_COMPLETED': 725 self.assertTrue(error, 'job completed unexpectedly') 726 self.assert_qmp(event, 'data/type', 'stream') 727 self.assert_qmp(event, 'data/device', 'drive0') 728 self.assert_qmp_absent(event, 'data/error') 729 self.assert_qmp(event, 'data/offset', self.image_len) 730 self.assert_qmp(event, 'data/len', self.image_len) 731 completed = True 732 elif event['event'] == 'JOB_STATUS_CHANGE': 733 self.assert_qmp(event, 'data/id', 'drive0') 734 735 self.assert_no_active_block_jobs() 736 self.vm.shutdown() 737 738class TestStreamStop(iotests.QMPTestCase): 739 image_len = 8 * 1024 * 1024 * 1024 # GB 740 741 def setUp(self): 742 qemu_img('create', backing_img, str(TestStreamStop.image_len)) 743 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 744 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 745 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 746 self.vm = iotests.VM().add_drive("blkdebug::" + test_img) 747 self.vm.launch() 748 749 def tearDown(self): 750 self.vm.shutdown() 751 os.remove(test_img) 752 os.remove(backing_img) 753 754 def test_stream_stop(self): 755 self.assert_no_active_block_jobs() 756 757 self.vm.pause_drive('drive0') 758 result = self.vm.qmp('block-stream', device='drive0') 759 self.assert_qmp(result, 'return', {}) 760 761 time.sleep(0.1) 762 events = self.vm.get_qmp_events(wait=False) 763 for e in events: 764 self.assert_qmp(e, 'event', 'JOB_STATUS_CHANGE') 765 self.assert_qmp(e, 'data/id', 'drive0') 766 767 self.cancel_and_wait(resume=True) 768 769class TestSetSpeed(iotests.QMPTestCase): 770 image_len = 80 * 1024 * 1024 # MB 771 772 def setUp(self): 773 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 774 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 775 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 776 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 777 self.vm = iotests.VM().add_drive('blkdebug::' + test_img) 778 self.vm.launch() 779 780 def tearDown(self): 781 self.vm.shutdown() 782 os.remove(test_img) 783 os.remove(backing_img) 784 785 # This is a short performance test which is not run by default. 786 # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" 787 def perf_test_throughput(self): 788 self.assert_no_active_block_jobs() 789 790 result = self.vm.qmp('block-stream', device='drive0') 791 self.assert_qmp(result, 'return', {}) 792 793 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 794 self.assert_qmp(result, 'return', {}) 795 796 self.wait_until_completed() 797 798 self.assert_no_active_block_jobs() 799 800 def test_set_speed(self): 801 self.assert_no_active_block_jobs() 802 803 self.vm.pause_drive('drive0') 804 result = self.vm.qmp('block-stream', device='drive0') 805 self.assert_qmp(result, 'return', {}) 806 807 # Default speed is 0 808 result = self.vm.qmp('query-block-jobs') 809 self.assert_qmp(result, 'return[0]/device', 'drive0') 810 self.assert_qmp(result, 'return[0]/speed', 0) 811 812 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 813 self.assert_qmp(result, 'return', {}) 814 815 # Ensure the speed we set was accepted 816 result = self.vm.qmp('query-block-jobs') 817 self.assert_qmp(result, 'return[0]/device', 'drive0') 818 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 819 820 self.cancel_and_wait(resume=True) 821 self.vm.pause_drive('drive0') 822 823 # Check setting speed in block-stream works 824 result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024) 825 self.assert_qmp(result, 'return', {}) 826 827 result = self.vm.qmp('query-block-jobs') 828 self.assert_qmp(result, 'return[0]/device', 'drive0') 829 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 830 831 self.cancel_and_wait(resume=True) 832 833 def test_set_speed_invalid(self): 834 self.assert_no_active_block_jobs() 835 836 result = self.vm.qmp('block-stream', device='drive0', speed=-1) 837 self.assert_qmp(result, 'error/class', 'GenericError') 838 839 self.assert_no_active_block_jobs() 840 841 self.vm.pause_drive('drive0') 842 result = self.vm.qmp('block-stream', device='drive0') 843 self.assert_qmp(result, 'return', {}) 844 845 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 846 self.assert_qmp(result, 'error/class', 'GenericError') 847 848 self.cancel_and_wait(resume=True) 849 850if __name__ == '__main__': 851 iotests.main(supported_fmts=['qcow2', 'qed']) 852