1#!/usr/bin/env python3 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, 40 "backing.node-name=mid," + 41 "backing.backing.node-name=base") 42 self.vm.launch() 43 44 def tearDown(self): 45 self.vm.shutdown() 46 os.remove(test_img) 47 os.remove(mid_img) 48 os.remove(backing_img) 49 50 def test_stream(self): 51 self.assert_no_active_block_jobs() 52 53 result = self.vm.qmp('block-stream', device='drive0') 54 self.assert_qmp(result, 'return', {}) 55 56 self.wait_until_completed() 57 58 self.assert_no_active_block_jobs() 59 self.vm.shutdown() 60 61 self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img), 62 qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 63 'image file map does not match backing file after streaming') 64 65 def test_stream_intermediate(self): 66 self.assert_no_active_block_jobs() 67 68 self.assertNotEqual(qemu_io('-f', 'raw', '-rU', '-c', 'map', backing_img), 69 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', mid_img), 70 'image file map matches backing file before streaming') 71 72 result = self.vm.qmp('block-stream', device='mid', job_id='stream-mid') 73 self.assert_qmp(result, 'return', {}) 74 75 self.wait_until_completed(drive='stream-mid') 76 77 self.assert_no_active_block_jobs() 78 self.vm.shutdown() 79 80 self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img), 81 qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img), 82 'image file map does not match backing file after streaming') 83 84 def test_stream_pause(self): 85 self.assert_no_active_block_jobs() 86 87 self.vm.pause_drive('drive0') 88 result = self.vm.qmp('block-stream', device='drive0') 89 self.assert_qmp(result, 'return', {}) 90 91 self.pause_job('drive0', wait=False) 92 self.vm.resume_drive('drive0') 93 self.pause_wait('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/desc', 150 'Cannot find device=nonexistent nor node_name=nonexistent') 151 152 def test_job_id_missing(self): 153 result = self.vm.qmp('block-stream', device='mid') 154 self.assert_qmp(result, 'error/desc', "Invalid job ID ''") 155 156 def test_read_only(self): 157 # Create a new file that we can attach (we need a read-only top) 158 with iotests.FilePath('ro-top.img') as ro_top_path: 159 qemu_img('create', '-f', iotests.imgfmt, ro_top_path, 160 str(self.image_len)) 161 162 result = self.vm.qmp('blockdev-add', 163 node_name='ro-top', 164 driver=iotests.imgfmt, 165 read_only=True, 166 file={ 167 'driver': 'file', 168 'filename': ro_top_path, 169 'read-only': True 170 }, 171 backing='mid') 172 self.assert_qmp(result, 'return', {}) 173 174 result = self.vm.qmp('block-stream', job_id='stream', 175 device='ro-top', base_node='base') 176 self.assert_qmp(result, 'error/desc', 'Block node is read-only') 177 178 result = self.vm.qmp('blockdev-del', node_name='ro-top') 179 self.assert_qmp(result, 'return', {}) 180 181 182class TestParallelOps(iotests.QMPTestCase): 183 num_ops = 4 # Number of parallel block-stream operations 184 num_imgs = num_ops * 2 + 1 185 image_len = num_ops * 4 * 1024 * 1024 186 imgs = [] 187 188 def setUp(self): 189 opts = [] 190 self.imgs = [] 191 192 # Initialize file names and command-line options 193 for i in range(self.num_imgs): 194 img_depth = self.num_imgs - i - 1 195 opts.append("backing." * img_depth + "node-name=node%d" % i) 196 self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i)) 197 198 # Create all images 199 iotests.create_image(self.imgs[0], self.image_len) 200 for i in range(1, self.num_imgs): 201 qemu_img('create', '-f', iotests.imgfmt, 202 '-o', 'backing_file=%s' % self.imgs[i-1], self.imgs[i]) 203 204 # Put data into the images we are copying data from 205 odd_img_indexes = [x for x in reversed(range(self.num_imgs)) if x % 2 == 1] 206 for i in range(len(odd_img_indexes)): 207 # Alternate between 2MB and 4MB. 208 # This way jobs will not finish in the same order they were created 209 num_mb = 2 + 2 * (i % 2) 210 qemu_io('-f', iotests.imgfmt, 211 '-c', 'write -P 0xFF %dM %dM' % (i * 4, num_mb), 212 self.imgs[odd_img_indexes[i]]) 213 214 # Attach the drive to the VM 215 self.vm = iotests.VM() 216 self.vm.add_drive(self.imgs[-1], ','.join(opts)) 217 self.vm.launch() 218 219 def tearDown(self): 220 self.vm.shutdown() 221 for img in self.imgs: 222 os.remove(img) 223 224 # Test that it's possible to run several block-stream operations 225 # in parallel in the same snapshot chain 226 def test_stream_parallel(self): 227 self.assert_no_active_block_jobs() 228 229 # Check that the maps don't match before the streaming operations 230 for i in range(2, self.num_imgs, 2): 231 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i]), 232 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]), 233 'image file map matches backing file before streaming') 234 235 # Create all streaming jobs 236 pending_jobs = [] 237 for i in range(2, self.num_imgs, 2): 238 node_name = 'node%d' % i 239 job_id = 'stream-%s' % node_name 240 pending_jobs.append(job_id) 241 result = self.vm.qmp('block-stream', device=node_name, job_id=job_id, base=self.imgs[i-2], speed=512*1024) 242 self.assert_qmp(result, 'return', {}) 243 244 for job in pending_jobs: 245 result = self.vm.qmp('block-job-set-speed', device=job, speed=0) 246 self.assert_qmp(result, 'return', {}) 247 248 # Wait for all jobs to be finished. 249 while len(pending_jobs) > 0: 250 for event in self.vm.get_qmp_events(wait=True): 251 if event['event'] == 'BLOCK_JOB_COMPLETED': 252 job_id = self.dictpath(event, 'data/device') 253 self.assertTrue(job_id in pending_jobs) 254 self.assert_qmp_absent(event, 'data/error') 255 pending_jobs.remove(job_id) 256 257 self.assert_no_active_block_jobs() 258 self.vm.shutdown() 259 260 # Check that all maps match now 261 for i in range(2, self.num_imgs, 2): 262 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]), 263 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]), 264 'image file map does not match backing file after streaming') 265 266 # Test that it's not possible to perform two block-stream 267 # operations if there are nodes involved in both. 268 def test_overlapping_1(self): 269 self.assert_no_active_block_jobs() 270 271 # Set a speed limit to make sure that this job blocks the rest 272 result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4', base=self.imgs[1], speed=1024*1024) 273 self.assert_qmp(result, 'return', {}) 274 275 result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2]) 276 self.assert_qmp(result, 'error/desc', 277 "Node 'node4' is busy: block device is in use by block job: stream") 278 279 result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2]) 280 self.assert_qmp(result, 'error/desc', 281 "Node 'node3' is busy: block device is in use by block job: stream") 282 283 result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4-v2') 284 self.assert_qmp(result, 'error/desc', 285 "Node 'node4' is busy: block device is in use by block job: stream") 286 287 # block-commit should also fail if it touches nodes used by the stream job 288 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4') 289 self.assert_qmp(result, 'error/desc', 290 "Node 'node4' is busy: block device is in use by block job: stream") 291 292 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1') 293 self.assert_qmp(result, 'error/desc', 294 "Node 'node3' is busy: block device is in use by block job: stream") 295 296 # This fails because it needs to modify the backing string in node2, which is blocked 297 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[0], top=self.imgs[1], job_id='commit-node0') 298 self.assert_qmp(result, 'error/desc', 299 "Node 'node2' is busy: block device is in use by block job: stream") 300 301 result = self.vm.qmp('block-job-set-speed', device='stream-node4', speed=0) 302 self.assert_qmp(result, 'return', {}) 303 304 self.wait_until_completed(drive='stream-node4') 305 self.assert_no_active_block_jobs() 306 307 # Similar to test_overlapping_1, but with block-commit 308 # blocking the other jobs 309 def test_overlapping_2(self): 310 self.assertLessEqual(9, self.num_imgs) 311 self.assert_no_active_block_jobs() 312 313 # Set a speed limit to make sure that this job blocks the rest 314 result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[5], base=self.imgs[3], job_id='commit-node3', speed=1024*1024) 315 self.assert_qmp(result, 'return', {}) 316 317 result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3') 318 self.assert_qmp(result, 'error/desc', 319 "Node 'node3' is busy: block device is in use by block job: commit") 320 321 result = self.vm.qmp('block-stream', device='node6', base=self.imgs[2], job_id='stream-node6') 322 self.assert_qmp(result, 'error/desc', 323 "Node 'node5' is busy: block device is in use by block job: commit") 324 325 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], job_id='stream-node4') 326 self.assert_qmp(result, 'error/desc', 327 "Node 'node4' is busy: block device is in use by block job: commit") 328 329 result = self.vm.qmp('block-stream', device='node6', base=self.imgs[4], job_id='stream-node6-v2') 330 self.assert_qmp(result, 'error/desc', 331 "Node 'node5' is busy: block device is in use by block job: commit") 332 333 # This fails because block-commit currently blocks the active layer even if it's not used 334 result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0') 335 self.assert_qmp(result, 'error/desc', 336 "Node 'drive0' is busy: block device is in use by block job: commit") 337 338 result = self.vm.qmp('block-job-set-speed', device='commit-node3', speed=0) 339 self.assert_qmp(result, 'return', {}) 340 341 self.wait_until_completed(drive='commit-node3') 342 343 # Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter. 344 # Internally this uses a mirror block job, hence the separate test case. 345 def test_overlapping_3(self): 346 self.assertLessEqual(8, self.num_imgs) 347 self.assert_no_active_block_jobs() 348 349 # Set a speed limit to make sure that this job blocks the rest 350 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024) 351 self.assert_qmp(result, 'return', {}) 352 353 result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6') 354 self.assert_qmp(result, 'error/desc', 355 "Node 'node5' is busy: block device is in use by block job: commit") 356 357 event = self.vm.event_wait(name='BLOCK_JOB_READY') 358 self.assert_qmp(event, 'data/device', 'commit-drive0') 359 self.assert_qmp(event, 'data/type', 'commit') 360 self.assert_qmp_absent(event, 'data/error') 361 362 result = self.vm.qmp('block-job-set-speed', device='commit-drive0', speed=0) 363 self.assert_qmp(result, 'return', {}) 364 365 result = self.vm.qmp('block-job-complete', device='commit-drive0') 366 self.assert_qmp(result, 'return', {}) 367 368 self.wait_until_completed(drive='commit-drive0') 369 370 # In this case the base node of the stream job is the same as the 371 # top node of commit job. Since this results in the commit filter 372 # node being part of the stream chain, this is not allowed. 373 def test_overlapping_4(self): 374 self.assert_no_active_block_jobs() 375 376 # Commit from node2 into node0 377 result = self.vm.qmp('block-commit', device='drive0', 378 top=self.imgs[2], base=self.imgs[0], 379 filter_node_name='commit-filter', speed=1024*1024) 380 self.assert_qmp(result, 'return', {}) 381 382 # Stream from node2 into node4 383 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='node4') 384 self.assert_qmp(result, 'error/desc', 385 "Cannot freeze 'backing' link to 'commit-filter'") 386 387 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0) 388 self.assert_qmp(result, 'return', {}) 389 390 self.wait_until_completed() 391 self.assert_no_active_block_jobs() 392 393 # In this case the base node of the stream job is the commit job's 394 # filter node. stream does not have a real dependency on its base 395 # node, so even though commit removes it when it is done, there is 396 # no conflict. 397 def test_overlapping_5(self): 398 self.assert_no_active_block_jobs() 399 400 # Commit from node2 into node0 401 result = self.vm.qmp('block-commit', device='drive0', 402 top_node='node2', base_node='node0', 403 filter_node_name='commit-filter', speed=1024*1024) 404 self.assert_qmp(result, 'return', {}) 405 406 # Stream from node2 into node4 407 result = self.vm.qmp('block-stream', device='node4', 408 base_node='commit-filter', job_id='node4') 409 self.assert_qmp(result, 'return', {}) 410 411 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0) 412 self.assert_qmp(result, 'return', {}) 413 414 self.vm.run_job(job='drive0', auto_dismiss=True) 415 self.vm.run_job(job='node4', auto_dismiss=True) 416 self.assert_no_active_block_jobs() 417 418 # Test a block-stream and a block-commit job in parallel 419 # Here the stream job is supposed to finish quickly in order to reproduce 420 # the scenario that triggers the bug fixed in 3d5d319e1221 and 1a63a907507 421 def test_stream_commit_1(self): 422 self.assertLessEqual(8, self.num_imgs) 423 self.assert_no_active_block_jobs() 424 425 # Stream from node0 into node2 426 result = self.vm.qmp('block-stream', device='node2', base_node='node0', job_id='node2') 427 self.assert_qmp(result, 'return', {}) 428 429 # Commit from the active layer into node3 430 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3]) 431 self.assert_qmp(result, 'return', {}) 432 433 # Wait for all jobs to be finished. 434 pending_jobs = ['node2', 'drive0'] 435 while len(pending_jobs) > 0: 436 for event in self.vm.get_qmp_events(wait=True): 437 if event['event'] == 'BLOCK_JOB_COMPLETED': 438 node_name = self.dictpath(event, 'data/device') 439 self.assertTrue(node_name in pending_jobs) 440 self.assert_qmp_absent(event, 'data/error') 441 pending_jobs.remove(node_name) 442 if event['event'] == 'BLOCK_JOB_READY': 443 self.assert_qmp(event, 'data/device', 'drive0') 444 self.assert_qmp(event, 'data/type', 'commit') 445 self.assert_qmp_absent(event, 'data/error') 446 self.assertTrue('drive0' in pending_jobs) 447 self.vm.qmp('block-job-complete', device='drive0') 448 449 self.assert_no_active_block_jobs() 450 451 # This is similar to test_stream_commit_1 but both jobs are slowed 452 # down so they can run in parallel for a little while. 453 def test_stream_commit_2(self): 454 self.assertLessEqual(8, self.num_imgs) 455 self.assert_no_active_block_jobs() 456 457 # Stream from node0 into node4 458 result = self.vm.qmp('block-stream', device='node4', base_node='node0', job_id='node4', speed=1024*1024) 459 self.assert_qmp(result, 'return', {}) 460 461 # Commit from the active layer into node5 462 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[5], speed=1024*1024) 463 self.assert_qmp(result, 'return', {}) 464 465 for job in ['drive0', 'node4']: 466 result = self.vm.qmp('block-job-set-speed', device=job, speed=0) 467 self.assert_qmp(result, 'return', {}) 468 469 # Wait for all jobs to be finished. 470 pending_jobs = ['node4', 'drive0'] 471 while len(pending_jobs) > 0: 472 for event in self.vm.get_qmp_events(wait=True): 473 if event['event'] == 'BLOCK_JOB_COMPLETED': 474 node_name = self.dictpath(event, 'data/device') 475 self.assertTrue(node_name in pending_jobs) 476 self.assert_qmp_absent(event, 'data/error') 477 pending_jobs.remove(node_name) 478 if event['event'] == 'BLOCK_JOB_READY': 479 self.assert_qmp(event, 'data/device', 'drive0') 480 self.assert_qmp(event, 'data/type', 'commit') 481 self.assert_qmp_absent(event, 'data/error') 482 self.assertTrue('drive0' in pending_jobs) 483 self.vm.qmp('block-job-complete', device='drive0') 484 485 self.assert_no_active_block_jobs() 486 487 # Test the base_node parameter 488 def test_stream_base_node_name(self): 489 self.assert_no_active_block_jobs() 490 491 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]), 492 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]), 493 'image file map matches backing file before streaming') 494 495 # Error: the base node does not exist 496 result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream') 497 self.assert_qmp(result, 'error/desc', 498 'Cannot find device= nor node_name=none') 499 500 # Error: the base node is not a backing file of the top node 501 result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream') 502 self.assert_qmp(result, 'error/desc', 503 "Node 'node6' is not a backing image of 'node4'") 504 505 # Error: the base node is the same as the top node 506 result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream') 507 self.assert_qmp(result, 'error/desc', 508 "Node 'node4' is not a backing image of 'node4'") 509 510 # Error: cannot specify 'base' and 'base-node' at the same time 511 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream') 512 self.assert_qmp(result, 'error/desc', 513 "'base' and 'base-node' cannot be specified at the same time") 514 515 # Success: the base node is a backing file of the top node 516 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream') 517 self.assert_qmp(result, 'return', {}) 518 519 self.wait_until_completed(drive='stream') 520 521 self.assert_no_active_block_jobs() 522 self.vm.shutdown() 523 524 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]), 525 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]), 526 'image file map matches backing file after streaming') 527 528class TestQuorum(iotests.QMPTestCase): 529 num_children = 3 530 children = [] 531 backing = [] 532 533 @iotests.skip_if_unsupported(['quorum']) 534 def setUp(self): 535 opts = ['driver=quorum', 'vote-threshold=2'] 536 537 # Initialize file names and command-line options 538 for i in range(self.num_children): 539 child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i) 540 backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i) 541 self.children.append(child_img) 542 self.backing.append(backing_img) 543 qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') 544 qemu_io('-f', iotests.imgfmt, 545 '-c', 'write -P 0x55 0 1024', backing_img) 546 qemu_img('create', '-f', iotests.imgfmt, 547 '-o', 'backing_file=%s' % backing_img, child_img) 548 opts.append("children.%d.file.filename=%s" % (i, child_img)) 549 opts.append("children.%d.node-name=node%d" % (i, i)) 550 551 # Attach the drive to the VM 552 self.vm = iotests.VM() 553 self.vm.add_drive(path = None, opts = ','.join(opts)) 554 self.vm.launch() 555 556 def tearDown(self): 557 self.vm.shutdown() 558 for img in self.children: 559 os.remove(img) 560 for img in self.backing: 561 os.remove(img) 562 563 def test_stream_quorum(self): 564 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]), 565 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]), 566 'image file map matches backing file before streaming') 567 568 self.assert_no_active_block_jobs() 569 570 result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0') 571 self.assert_qmp(result, 'return', {}) 572 573 self.wait_until_completed(drive='stream-node0') 574 575 self.assert_no_active_block_jobs() 576 self.vm.shutdown() 577 578 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]), 579 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]), 580 'image file map does not match backing file after streaming') 581 582class TestSmallerBackingFile(iotests.QMPTestCase): 583 backing_len = 1 * 1024 * 1024 # MB 584 image_len = 2 * backing_len 585 586 def setUp(self): 587 iotests.create_image(backing_img, self.backing_len) 588 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len)) 589 self.vm = iotests.VM().add_drive(test_img) 590 self.vm.launch() 591 592 # If this hangs, then you are missing a fix to complete streaming when the 593 # end of the backing file is reached. 594 def test_stream(self): 595 self.assert_no_active_block_jobs() 596 597 result = self.vm.qmp('block-stream', device='drive0') 598 self.assert_qmp(result, 'return', {}) 599 600 self.wait_until_completed() 601 602 self.assert_no_active_block_jobs() 603 self.vm.shutdown() 604 605class TestErrors(iotests.QMPTestCase): 606 image_len = 2 * 1024 * 1024 # MB 607 608 # this should match STREAM_BUFFER_SIZE/512 in block/stream.c 609 STREAM_BUFFER_SIZE = 512 * 1024 610 611 def create_blkdebug_file(self, name, event, errno): 612 file = open(name, 'w') 613 file.write(''' 614[inject-error] 615state = "1" 616event = "%s" 617errno = "%d" 618immediately = "off" 619once = "on" 620sector = "%d" 621 622[set-state] 623state = "1" 624event = "%s" 625new_state = "2" 626 627[set-state] 628state = "2" 629event = "%s" 630new_state = "1" 631''' % (event, errno, self.STREAM_BUFFER_SIZE // 512, event, event)) 632 file.close() 633 634class TestEIO(TestErrors): 635 def setUp(self): 636 self.blkdebug_file = backing_img + ".blkdebug" 637 iotests.create_image(backing_img, TestErrors.image_len) 638 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 639 qemu_img('create', '-f', iotests.imgfmt, 640 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 641 % (self.blkdebug_file, backing_img), 642 test_img) 643 self.vm = iotests.VM().add_drive(test_img) 644 self.vm.launch() 645 646 def tearDown(self): 647 self.vm.shutdown() 648 os.remove(test_img) 649 os.remove(backing_img) 650 os.remove(self.blkdebug_file) 651 652 def test_report(self): 653 self.assert_no_active_block_jobs() 654 655 result = self.vm.qmp('block-stream', device='drive0') 656 self.assert_qmp(result, 'return', {}) 657 658 completed = False 659 error = False 660 while not completed: 661 for event in self.vm.get_qmp_events(wait=True): 662 if event['event'] == 'BLOCK_JOB_ERROR': 663 self.assert_qmp(event, 'data/device', 'drive0') 664 self.assert_qmp(event, 'data/operation', 'read') 665 error = True 666 elif event['event'] == 'BLOCK_JOB_COMPLETED': 667 self.assertTrue(error, 'job completed unexpectedly') 668 self.assert_qmp(event, 'data/type', 'stream') 669 self.assert_qmp(event, 'data/device', 'drive0') 670 self.assert_qmp(event, 'data/error', 'Input/output error') 671 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 672 self.assert_qmp(event, 'data/len', self.image_len) 673 completed = True 674 elif event['event'] == 'JOB_STATUS_CHANGE': 675 self.assert_qmp(event, 'data/id', 'drive0') 676 677 self.assert_no_active_block_jobs() 678 self.vm.shutdown() 679 680 def test_ignore(self): 681 self.assert_no_active_block_jobs() 682 683 result = self.vm.qmp('block-stream', device='drive0', on_error='ignore') 684 self.assert_qmp(result, 'return', {}) 685 686 error = False 687 completed = False 688 while not completed: 689 for event in self.vm.get_qmp_events(wait=True): 690 if event['event'] == 'BLOCK_JOB_ERROR': 691 error = True 692 self.assert_qmp(event, 'data/device', 'drive0') 693 self.assert_qmp(event, 'data/operation', 'read') 694 result = self.vm.qmp('query-block-jobs') 695 if result == {'return': []}: 696 # Job finished too quickly 697 continue 698 self.assert_qmp(result, 'return[0]/paused', False) 699 elif event['event'] == 'BLOCK_JOB_COMPLETED': 700 self.assertTrue(error, 'job completed unexpectedly') 701 self.assert_qmp(event, 'data/type', 'stream') 702 self.assert_qmp(event, 'data/device', 'drive0') 703 self.assert_qmp(event, 'data/error', 'Input/output error') 704 self.assert_qmp(event, 'data/offset', self.image_len) 705 self.assert_qmp(event, 'data/len', self.image_len) 706 completed = True 707 elif event['event'] == 'JOB_STATUS_CHANGE': 708 self.assert_qmp(event, 'data/id', 'drive0') 709 710 self.assert_no_active_block_jobs() 711 self.vm.shutdown() 712 713 def test_stop(self): 714 self.assert_no_active_block_jobs() 715 716 result = self.vm.qmp('block-stream', device='drive0', on_error='stop') 717 self.assert_qmp(result, 'return', {}) 718 719 error = False 720 completed = False 721 while not completed: 722 for event in self.vm.get_qmp_events(wait=True): 723 if event['event'] == 'BLOCK_JOB_ERROR': 724 error = True 725 self.assert_qmp(event, 'data/device', 'drive0') 726 self.assert_qmp(event, 'data/operation', 'read') 727 728 result = self.vm.qmp('query-block-jobs') 729 self.assert_qmp(result, 'return[0]/paused', True) 730 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 731 self.assert_qmp(result, 'return[0]/io-status', 'failed') 732 733 result = self.vm.qmp('block-job-resume', device='drive0') 734 self.assert_qmp(result, 'return', {}) 735 736 result = self.vm.qmp('query-block-jobs') 737 if result == {'return': []}: 738 # Race; likely already finished. Check. 739 continue 740 self.assert_qmp(result, 'return[0]/paused', False) 741 self.assert_qmp(result, 'return[0]/io-status', 'ok') 742 elif event['event'] == 'BLOCK_JOB_COMPLETED': 743 self.assertTrue(error, 'job completed unexpectedly') 744 self.assert_qmp(event, 'data/type', 'stream') 745 self.assert_qmp(event, 'data/device', 'drive0') 746 self.assert_qmp_absent(event, 'data/error') 747 self.assert_qmp(event, 'data/offset', self.image_len) 748 self.assert_qmp(event, 'data/len', self.image_len) 749 completed = True 750 elif event['event'] == 'JOB_STATUS_CHANGE': 751 self.assert_qmp(event, 'data/id', 'drive0') 752 753 self.assert_no_active_block_jobs() 754 self.vm.shutdown() 755 756 def test_enospc(self): 757 self.assert_no_active_block_jobs() 758 759 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 760 self.assert_qmp(result, 'return', {}) 761 762 completed = False 763 error = False 764 while not completed: 765 for event in self.vm.get_qmp_events(wait=True): 766 if event['event'] == 'BLOCK_JOB_ERROR': 767 self.assert_qmp(event, 'data/device', 'drive0') 768 self.assert_qmp(event, 'data/operation', 'read') 769 error = True 770 elif event['event'] == 'BLOCK_JOB_COMPLETED': 771 self.assertTrue(error, 'job completed unexpectedly') 772 self.assert_qmp(event, 'data/type', 'stream') 773 self.assert_qmp(event, 'data/device', 'drive0') 774 self.assert_qmp(event, 'data/error', 'Input/output error') 775 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 776 self.assert_qmp(event, 'data/len', self.image_len) 777 completed = True 778 elif event['event'] == 'JOB_STATUS_CHANGE': 779 self.assert_qmp(event, 'data/id', 'drive0') 780 781 self.assert_no_active_block_jobs() 782 self.vm.shutdown() 783 784class TestENOSPC(TestErrors): 785 def setUp(self): 786 self.blkdebug_file = backing_img + ".blkdebug" 787 iotests.create_image(backing_img, TestErrors.image_len) 788 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28) 789 qemu_img('create', '-f', iotests.imgfmt, 790 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 791 % (self.blkdebug_file, backing_img), 792 test_img) 793 self.vm = iotests.VM().add_drive(test_img) 794 self.vm.launch() 795 796 def tearDown(self): 797 self.vm.shutdown() 798 os.remove(test_img) 799 os.remove(backing_img) 800 os.remove(self.blkdebug_file) 801 802 def test_enospc(self): 803 self.assert_no_active_block_jobs() 804 805 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 806 self.assert_qmp(result, 'return', {}) 807 808 error = False 809 completed = False 810 while not completed: 811 for event in self.vm.get_qmp_events(wait=True): 812 if event['event'] == 'BLOCK_JOB_ERROR': 813 self.assert_qmp(event, 'data/device', 'drive0') 814 self.assert_qmp(event, 'data/operation', 'read') 815 error = True 816 817 result = self.vm.qmp('query-block-jobs') 818 self.assert_qmp(result, 'return[0]/paused', True) 819 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 820 self.assert_qmp(result, 'return[0]/io-status', 'nospace') 821 822 result = self.vm.qmp('block-job-resume', device='drive0') 823 self.assert_qmp(result, 'return', {}) 824 825 result = self.vm.qmp('query-block-jobs') 826 if result == {'return': []}: 827 # Race; likely already finished. Check. 828 continue 829 self.assert_qmp(result, 'return[0]/paused', False) 830 self.assert_qmp(result, 'return[0]/io-status', 'ok') 831 elif event['event'] == 'BLOCK_JOB_COMPLETED': 832 self.assertTrue(error, 'job completed unexpectedly') 833 self.assert_qmp(event, 'data/type', 'stream') 834 self.assert_qmp(event, 'data/device', 'drive0') 835 self.assert_qmp_absent(event, 'data/error') 836 self.assert_qmp(event, 'data/offset', self.image_len) 837 self.assert_qmp(event, 'data/len', self.image_len) 838 completed = True 839 elif event['event'] == 'JOB_STATUS_CHANGE': 840 self.assert_qmp(event, 'data/id', 'drive0') 841 842 self.assert_no_active_block_jobs() 843 self.vm.shutdown() 844 845class TestStreamStop(iotests.QMPTestCase): 846 image_len = 8 * 1024 * 1024 * 1024 # GB 847 848 def setUp(self): 849 qemu_img('create', backing_img, str(TestStreamStop.image_len)) 850 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 851 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 852 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 853 self.vm = iotests.VM().add_drive("blkdebug::" + test_img) 854 self.vm.launch() 855 856 def tearDown(self): 857 self.vm.shutdown() 858 os.remove(test_img) 859 os.remove(backing_img) 860 861 def test_stream_stop(self): 862 self.assert_no_active_block_jobs() 863 864 self.vm.pause_drive('drive0') 865 result = self.vm.qmp('block-stream', device='drive0') 866 self.assert_qmp(result, 'return', {}) 867 868 time.sleep(0.1) 869 events = self.vm.get_qmp_events(wait=False) 870 for e in events: 871 self.assert_qmp(e, 'event', 'JOB_STATUS_CHANGE') 872 self.assert_qmp(e, 'data/id', 'drive0') 873 874 self.cancel_and_wait(resume=True) 875 876class TestSetSpeed(iotests.QMPTestCase): 877 image_len = 80 * 1024 * 1024 # MB 878 879 def setUp(self): 880 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 881 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 882 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 883 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 884 self.vm = iotests.VM().add_drive('blkdebug::' + test_img) 885 self.vm.launch() 886 887 def tearDown(self): 888 self.vm.shutdown() 889 os.remove(test_img) 890 os.remove(backing_img) 891 892 # This is a short performance test which is not run by default. 893 # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" 894 def perf_test_throughput(self): 895 self.assert_no_active_block_jobs() 896 897 result = self.vm.qmp('block-stream', device='drive0') 898 self.assert_qmp(result, 'return', {}) 899 900 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 901 self.assert_qmp(result, 'return', {}) 902 903 self.wait_until_completed() 904 905 self.assert_no_active_block_jobs() 906 907 def test_set_speed(self): 908 self.assert_no_active_block_jobs() 909 910 self.vm.pause_drive('drive0') 911 result = self.vm.qmp('block-stream', device='drive0') 912 self.assert_qmp(result, 'return', {}) 913 914 # Default speed is 0 915 result = self.vm.qmp('query-block-jobs') 916 self.assert_qmp(result, 'return[0]/device', 'drive0') 917 self.assert_qmp(result, 'return[0]/speed', 0) 918 919 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 920 self.assert_qmp(result, 'return', {}) 921 922 # Ensure the speed we set was accepted 923 result = self.vm.qmp('query-block-jobs') 924 self.assert_qmp(result, 'return[0]/device', 'drive0') 925 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 926 927 self.cancel_and_wait(resume=True) 928 self.vm.pause_drive('drive0') 929 930 # Check setting speed in block-stream works 931 result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024) 932 self.assert_qmp(result, 'return', {}) 933 934 result = self.vm.qmp('query-block-jobs') 935 self.assert_qmp(result, 'return[0]/device', 'drive0') 936 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 937 938 self.cancel_and_wait(resume=True) 939 940 def test_set_speed_invalid(self): 941 self.assert_no_active_block_jobs() 942 943 result = self.vm.qmp('block-stream', device='drive0', speed=-1) 944 self.assert_qmp(result, 'error/desc', "Parameter 'speed' expects a non-negative value") 945 946 self.assert_no_active_block_jobs() 947 948 self.vm.pause_drive('drive0') 949 result = self.vm.qmp('block-stream', device='drive0') 950 self.assert_qmp(result, 'return', {}) 951 952 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 953 self.assert_qmp(result, 'error/desc', "Parameter 'speed' expects a non-negative value") 954 955 self.cancel_and_wait(resume=True) 956 957if __name__ == '__main__': 958 iotests.main(supported_fmts=['qcow2', 'qed'], 959 supported_protocols=['file']) 960