1#!/usr/bin/env python3 2# group: rw auto backing 3# 4# Tests for image streaming. 5# 6# Copyright (C) 2012 IBM Corp. 7# 8# This program is free software; you can redistribute it and/or modify 9# it under the terms of the GNU General Public License as published by 10# the Free Software Foundation; either version 2 of the License, or 11# (at your option) any later version. 12# 13# This program is distributed in the hope that it will be useful, 14# but WITHOUT ANY WARRANTY; without even the implied warranty of 15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16# GNU General Public License for more details. 17# 18# You should have received a copy of the GNU General Public License 19# along with this program. If not, see <http://www.gnu.org/licenses/>. 20# 21 22import time 23import os 24import iotests 25import unittest 26from iotests import qemu_img, qemu_io 27 28backing_img = os.path.join(iotests.test_dir, 'backing.img') 29mid_img = os.path.join(iotests.test_dir, 'mid.img') 30test_img = os.path.join(iotests.test_dir, 'test.img') 31 32class TestSingleDrive(iotests.QMPTestCase): 33 image_len = 1 * 1024 * 1024 # MB 34 35 def setUp(self): 36 iotests.create_image(backing_img, TestSingleDrive.image_len) 37 qemu_img('create', '-f', iotests.imgfmt, 38 '-o', 'backing_file=%s' % backing_img, 39 '-F', 'raw', mid_img) 40 qemu_img('create', '-f', iotests.imgfmt, 41 '-o', 'backing_file=%s' % mid_img, 42 '-F', iotests.imgfmt, test_img) 43 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 512', backing_img) 44 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 524288 512', mid_img) 45 self.vm = iotests.VM().add_drive("blkdebug::" + test_img, 46 "backing.node-name=mid," + 47 "backing.backing.node-name=base") 48 self.vm.launch() 49 50 def tearDown(self): 51 self.vm.shutdown() 52 os.remove(test_img) 53 os.remove(mid_img) 54 os.remove(backing_img) 55 56 def test_stream(self): 57 self.assert_no_active_block_jobs() 58 59 result = self.vm.qmp('block-stream', device='drive0') 60 self.assert_qmp(result, 'return', {}) 61 62 self.wait_until_completed() 63 64 self.assert_no_active_block_jobs() 65 self.vm.shutdown() 66 67 self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img), 68 qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 69 'image file map does not match backing file after streaming') 70 71 def test_stream_intermediate(self): 72 self.assert_no_active_block_jobs() 73 74 self.assertNotEqual(qemu_io('-f', 'raw', '-rU', '-c', 'map', backing_img), 75 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', mid_img), 76 'image file map matches backing file before streaming') 77 78 result = self.vm.qmp('block-stream', device='mid', job_id='stream-mid') 79 self.assert_qmp(result, 'return', {}) 80 81 self.wait_until_completed(drive='stream-mid') 82 83 self.assert_no_active_block_jobs() 84 self.vm.shutdown() 85 86 self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img), 87 qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img), 88 'image file map does not match backing file after streaming') 89 90 def test_stream_pause(self): 91 self.assert_no_active_block_jobs() 92 93 self.vm.pause_drive('drive0') 94 result = self.vm.qmp('block-stream', device='drive0') 95 self.assert_qmp(result, 'return', {}) 96 97 self.pause_job('drive0', wait=False) 98 self.vm.resume_drive('drive0') 99 self.pause_wait('drive0') 100 101 result = self.vm.qmp('query-block-jobs') 102 offset = self.dictpath(result, 'return[0]/offset') 103 104 time.sleep(0.5) 105 result = self.vm.qmp('query-block-jobs') 106 self.assert_qmp(result, 'return[0]/offset', offset) 107 108 result = self.vm.qmp('block-job-resume', device='drive0') 109 self.assert_qmp(result, 'return', {}) 110 111 self.wait_until_completed() 112 113 self.assert_no_active_block_jobs() 114 self.vm.shutdown() 115 116 self.assertEqual(qemu_io('-f', 'raw', '-c', 'map', backing_img), 117 qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 118 'image file map does not match backing file after streaming') 119 120 def test_stream_no_op(self): 121 self.assert_no_active_block_jobs() 122 123 # The image map is empty before the operation 124 empty_map = qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', test_img) 125 126 # This is a no-op: no data should ever be copied from the base image 127 result = self.vm.qmp('block-stream', device='drive0', base=mid_img) 128 self.assert_qmp(result, 'return', {}) 129 130 self.wait_until_completed() 131 132 self.assert_no_active_block_jobs() 133 self.vm.shutdown() 134 135 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 136 empty_map, 'image file map changed after a no-op') 137 138 def test_stream_partial(self): 139 self.assert_no_active_block_jobs() 140 141 result = self.vm.qmp('block-stream', device='drive0', base=backing_img) 142 self.assert_qmp(result, 'return', {}) 143 144 self.wait_until_completed() 145 146 self.assert_no_active_block_jobs() 147 self.vm.shutdown() 148 149 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', mid_img), 150 qemu_io('-f', iotests.imgfmt, '-c', 'map', test_img), 151 'image file map does not match backing file after streaming') 152 153 def test_device_not_found(self): 154 result = self.vm.qmp('block-stream', device='nonexistent') 155 self.assert_qmp(result, 'error/desc', 156 'Cannot find device=nonexistent nor node_name=nonexistent') 157 158 def test_job_id_missing(self): 159 result = self.vm.qmp('block-stream', device='mid') 160 self.assert_qmp(result, 'error/desc', "Invalid job ID ''") 161 162 def test_read_only(self): 163 # Create a new file that we can attach (we need a read-only top) 164 with iotests.FilePath('ro-top.img') as ro_top_path: 165 qemu_img('create', '-f', iotests.imgfmt, ro_top_path, 166 str(self.image_len)) 167 168 result = self.vm.qmp('blockdev-add', 169 node_name='ro-top', 170 driver=iotests.imgfmt, 171 read_only=True, 172 file={ 173 'driver': 'file', 174 'filename': ro_top_path, 175 'read-only': True 176 }, 177 backing='mid') 178 self.assert_qmp(result, 'return', {}) 179 180 result = self.vm.qmp('block-stream', job_id='stream', 181 device='ro-top', base_node='base') 182 self.assert_qmp(result, 'error/desc', 'Block node is read-only') 183 184 result = self.vm.qmp('blockdev-del', node_name='ro-top') 185 self.assert_qmp(result, 'return', {}) 186 187 188class TestParallelOps(iotests.QMPTestCase): 189 num_ops = 4 # Number of parallel block-stream operations 190 num_imgs = num_ops * 2 + 1 191 image_len = num_ops * 4 * 1024 * 1024 192 imgs = [] 193 194 def setUp(self): 195 opts = [] 196 self.imgs = [] 197 198 # Initialize file names and command-line options 199 for i in range(self.num_imgs): 200 img_depth = self.num_imgs - i - 1 201 opts.append("backing." * img_depth + "node-name=node%d" % i) 202 self.imgs.append(os.path.join(iotests.test_dir, 'img-%d.img' % i)) 203 204 # Create all images 205 iotests.create_image(self.imgs[0], self.image_len) 206 for i in range(1, self.num_imgs): 207 qemu_img('create', '-f', iotests.imgfmt, 208 '-o', 'backing_file=%s' % self.imgs[i-1], 209 '-F', 'raw' if i == 1 else iotests.imgfmt, self.imgs[i]) 210 211 # Put data into the images we are copying data from 212 odd_img_indexes = [x for x in reversed(range(self.num_imgs)) if x % 2 == 1] 213 for i in range(len(odd_img_indexes)): 214 # Alternate between 2MB and 4MB. 215 # This way jobs will not finish in the same order they were created 216 num_mb = 2 + 2 * (i % 2) 217 qemu_io('-f', iotests.imgfmt, 218 '-c', 'write -P 0xFF %dM %dM' % (i * 4, num_mb), 219 self.imgs[odd_img_indexes[i]]) 220 221 # Attach the drive to the VM 222 self.vm = iotests.VM() 223 self.vm.add_drive(self.imgs[-1], ','.join(opts)) 224 self.vm.launch() 225 226 def tearDown(self): 227 self.vm.shutdown() 228 for img in self.imgs: 229 os.remove(img) 230 231 # Test that it's possible to run several block-stream operations 232 # in parallel in the same snapshot chain 233 @unittest.skipIf(os.environ.get('QEMU_CHECK_BLOCK_AUTO'), 'disabled in CI') 234 def test_stream_parallel(self): 235 self.assert_no_active_block_jobs() 236 237 # Check that the maps don't match before the streaming operations 238 for i in range(2, self.num_imgs, 2): 239 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i]), 240 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]), 241 'image file map matches backing file before streaming') 242 243 # Create all streaming jobs 244 pending_jobs = [] 245 for i in range(2, self.num_imgs, 2): 246 node_name = 'node%d' % i 247 job_id = 'stream-%s' % node_name 248 pending_jobs.append(job_id) 249 result = self.vm.qmp('block-stream', device=node_name, 250 job_id=job_id, bottom=f'node{i-1}', 251 speed=1024) 252 self.assert_qmp(result, 'return', {}) 253 254 for job in pending_jobs: 255 result = self.vm.qmp('block-job-set-speed', device=job, speed=0) 256 self.assert_qmp(result, 'return', {}) 257 258 # Wait for all jobs to be finished. 259 while len(pending_jobs) > 0: 260 for event in self.vm.get_qmp_events(wait=True): 261 if event['event'] == 'BLOCK_JOB_COMPLETED': 262 job_id = self.dictpath(event, 'data/device') 263 self.assertTrue(job_id in pending_jobs) 264 self.assert_qmp_absent(event, 'data/error') 265 pending_jobs.remove(job_id) 266 267 self.assert_no_active_block_jobs() 268 self.vm.shutdown() 269 270 # Check that all maps match now 271 for i in range(2, self.num_imgs, 2): 272 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]), 273 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]), 274 'image file map does not match backing file after streaming') 275 276 # Test that it's not possible to perform two block-stream 277 # operations if there are nodes involved in both. 278 def test_overlapping_1(self): 279 self.assert_no_active_block_jobs() 280 281 # Set a speed limit to make sure that this job blocks the rest 282 result = self.vm.qmp('block-stream', device='node4', 283 job_id='stream-node4', base=self.imgs[1], 284 filter_node_name='stream-filter', speed=1024*1024) 285 self.assert_qmp(result, 'return', {}) 286 287 result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2]) 288 self.assert_qmp(result, 'error/desc', 289 "Node 'stream-filter' is busy: block device is in use by block job: stream") 290 291 result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2]) 292 self.assert_qmp(result, 'error/desc', 293 "Node 'node3' is busy: block device is in use by block job: stream") 294 295 result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4-v2') 296 self.assert_qmp(result, 'error/desc', 297 "Node 'node4' is busy: block device is in use by block job: stream") 298 299 # block-commit should also fail if it touches nodes used by the stream job 300 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4') 301 self.assert_qmp(result, 'error/desc', 302 "Node 'stream-filter' is busy: block device is in use by block job: stream") 303 304 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1') 305 self.assert_qmp(result, 'error/desc', 306 "Node 'node3' is busy: block device is in use by block job: stream") 307 308 # This fails because it needs to modify the backing string in node2, which is blocked 309 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[0], top=self.imgs[1], job_id='commit-node0') 310 self.assert_qmp(result, 'error/desc', 311 "Node 'node2' is busy: block device is in use by block job: stream") 312 313 result = self.vm.qmp('block-job-set-speed', device='stream-node4', speed=0) 314 self.assert_qmp(result, 'return', {}) 315 316 self.wait_until_completed(drive='stream-node4') 317 self.assert_no_active_block_jobs() 318 319 # Similar to test_overlapping_1, but with block-commit 320 # blocking the other jobs 321 def test_overlapping_2(self): 322 self.assertLessEqual(9, self.num_imgs) 323 self.assert_no_active_block_jobs() 324 325 # Set a speed limit to make sure that this job blocks the rest 326 result = self.vm.qmp('block-commit', device='drive0', top=self.imgs[5], base=self.imgs[3], job_id='commit-node3', speed=1024*1024) 327 self.assert_qmp(result, 'return', {}) 328 329 result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3') 330 self.assert_qmp(result, 'error/desc', 331 "Node 'node3' is busy: block device is in use by block job: commit") 332 333 result = self.vm.qmp('block-stream', device='node6', base=self.imgs[2], job_id='stream-node6') 334 self.assert_qmp(result, 'error/desc', 335 "Node 'node5' is busy: block device is in use by block job: commit") 336 337 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], job_id='stream-node4') 338 self.assert_qmp(result, 'error/desc', 339 "Node 'node4' is busy: block device is in use by block job: commit") 340 341 result = self.vm.qmp('block-stream', device='node6', base=self.imgs[4], job_id='stream-node6-v2') 342 self.assert_qmp(result, 'error/desc', 343 "Node 'node5' is busy: block device is in use by block job: commit") 344 345 # This fails because block-commit currently blocks the active layer even if it's not used 346 result = self.vm.qmp('block-stream', device='drive0', base=self.imgs[5], job_id='stream-drive0') 347 self.assert_qmp(result, 'error/desc', 348 "Node 'drive0' is busy: block device is in use by block job: commit") 349 350 result = self.vm.qmp('block-job-set-speed', device='commit-node3', speed=0) 351 self.assert_qmp(result, 'return', {}) 352 353 self.wait_until_completed(drive='commit-node3') 354 355 # Similar to test_overlapping_2, but here block-commit doesn't use the 'top' parameter. 356 # Internally this uses a mirror block job, hence the separate test case. 357 def test_overlapping_3(self): 358 self.assertLessEqual(8, self.num_imgs) 359 self.assert_no_active_block_jobs() 360 361 # Set a speed limit to make sure that this job blocks the rest 362 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3], job_id='commit-drive0', speed=1024*1024) 363 self.assert_qmp(result, 'return', {}) 364 365 result = self.vm.qmp('block-stream', device='node5', base=self.imgs[3], job_id='stream-node6') 366 self.assert_qmp(result, 'error/desc', 367 "Node 'node5' is busy: block device is in use by block job: commit") 368 369 result = self.vm.qmp('block-job-set-speed', device='commit-drive0', speed=0) 370 self.assert_qmp(result, 'return', {}) 371 372 event = self.vm.event_wait(name='BLOCK_JOB_READY') 373 self.assert_qmp(event, 'data/device', 'commit-drive0') 374 self.assert_qmp(event, 'data/type', 'commit') 375 self.assert_qmp_absent(event, 'data/error') 376 377 result = self.vm.qmp('block-job-complete', device='commit-drive0') 378 self.assert_qmp(result, 'return', {}) 379 380 self.wait_until_completed(drive='commit-drive0') 381 382 # In this case the base node of the stream job is the same as the 383 # top node of commit job. Since this results in the commit filter 384 # node being part of the stream chain, this is not allowed. 385 def test_overlapping_4(self): 386 self.assert_no_active_block_jobs() 387 388 # Commit from node2 into node0 389 result = self.vm.qmp('block-commit', device='drive0', 390 top=self.imgs[2], base=self.imgs[0], 391 filter_node_name='commit-filter', speed=1024*1024) 392 self.assert_qmp(result, 'return', {}) 393 394 # Stream from node2 into node4 395 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='node4') 396 self.assert_qmp(result, 'error/desc', 397 "Cannot freeze 'backing' link to 'commit-filter'") 398 399 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0) 400 self.assert_qmp(result, 'return', {}) 401 402 self.wait_until_completed() 403 self.assert_no_active_block_jobs() 404 405 # In this case the base node of the stream job is the commit job's 406 # filter node. stream does not have a real dependency on its base 407 # node, so even though commit removes it when it is done, there is 408 # no conflict. 409 def test_overlapping_5(self): 410 self.assert_no_active_block_jobs() 411 412 # Commit from node2 into node0 413 result = self.vm.qmp('block-commit', device='drive0', 414 top_node='node2', base_node='node0', 415 filter_node_name='commit-filter', speed=1024*1024) 416 self.assert_qmp(result, 'return', {}) 417 418 # Stream from node2 into node4 419 result = self.vm.qmp('block-stream', device='node4', 420 base_node='commit-filter', job_id='node4') 421 self.assert_qmp(result, 'return', {}) 422 423 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=0) 424 self.assert_qmp(result, 'return', {}) 425 426 self.vm.run_job(job='drive0', auto_dismiss=True) 427 self.vm.run_job(job='node4', auto_dismiss=True) 428 self.assert_no_active_block_jobs() 429 430 # Test a block-stream and a block-commit job in parallel 431 # Here the stream job is supposed to finish quickly in order to reproduce 432 # the scenario that triggers the bug fixed in 3d5d319e1221 and 1a63a907507 433 def test_stream_commit_1(self): 434 self.assertLessEqual(8, self.num_imgs) 435 self.assert_no_active_block_jobs() 436 437 # Stream from node0 into node2 438 result = self.vm.qmp('block-stream', device='node2', base_node='node0', job_id='node2') 439 self.assert_qmp(result, 'return', {}) 440 441 # Commit from the active layer into node3 442 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[3]) 443 self.assert_qmp(result, 'return', {}) 444 445 # Wait for all jobs to be finished. 446 pending_jobs = ['node2', 'drive0'] 447 while len(pending_jobs) > 0: 448 for event in self.vm.get_qmp_events(wait=True): 449 if event['event'] == 'BLOCK_JOB_COMPLETED': 450 node_name = self.dictpath(event, 'data/device') 451 self.assertTrue(node_name in pending_jobs) 452 self.assert_qmp_absent(event, 'data/error') 453 pending_jobs.remove(node_name) 454 if event['event'] == 'BLOCK_JOB_READY': 455 self.assert_qmp(event, 'data/device', 'drive0') 456 self.assert_qmp(event, 'data/type', 'commit') 457 self.assert_qmp_absent(event, 'data/error') 458 self.assertTrue('drive0' in pending_jobs) 459 self.vm.qmp('block-job-complete', device='drive0') 460 461 self.assert_no_active_block_jobs() 462 463 # This is similar to test_stream_commit_1 but both jobs are slowed 464 # down so they can run in parallel for a little while. 465 def test_stream_commit_2(self): 466 self.assertLessEqual(8, self.num_imgs) 467 self.assert_no_active_block_jobs() 468 469 # Stream from node0 into node4 470 result = self.vm.qmp('block-stream', device='node4', base_node='node0', job_id='node4', speed=1024*1024) 471 self.assert_qmp(result, 'return', {}) 472 473 # Commit from the active layer into node5 474 result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[5], speed=1024*1024) 475 self.assert_qmp(result, 'return', {}) 476 477 for job in ['drive0', 'node4']: 478 result = self.vm.qmp('block-job-set-speed', device=job, speed=0) 479 self.assert_qmp(result, 'return', {}) 480 481 # Wait for all jobs to be finished. 482 pending_jobs = ['node4', 'drive0'] 483 while len(pending_jobs) > 0: 484 for event in self.vm.get_qmp_events(wait=True): 485 if event['event'] == 'BLOCK_JOB_COMPLETED': 486 node_name = self.dictpath(event, 'data/device') 487 self.assertTrue(node_name in pending_jobs) 488 self.assert_qmp_absent(event, 'data/error') 489 pending_jobs.remove(node_name) 490 if event['event'] == 'BLOCK_JOB_READY': 491 self.assert_qmp(event, 'data/device', 'drive0') 492 self.assert_qmp(event, 'data/type', 'commit') 493 self.assert_qmp_absent(event, 'data/error') 494 self.assertTrue('drive0' in pending_jobs) 495 self.vm.qmp('block-job-complete', device='drive0') 496 497 self.assert_no_active_block_jobs() 498 499 # Test the base_node parameter 500 def test_stream_base_node_name(self): 501 self.assert_no_active_block_jobs() 502 503 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[4]), 504 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[3]), 505 'image file map matches backing file before streaming') 506 507 # Error: the base node does not exist 508 result = self.vm.qmp('block-stream', device='node4', base_node='none', job_id='stream') 509 self.assert_qmp(result, 'error/desc', 510 'Cannot find device= nor node_name=none') 511 512 # Error: the base node is not a backing file of the top node 513 result = self.vm.qmp('block-stream', device='node4', base_node='node6', job_id='stream') 514 self.assert_qmp(result, 'error/desc', 515 "Node 'node6' is not a backing image of 'node4'") 516 517 # Error: the base node is the same as the top node 518 result = self.vm.qmp('block-stream', device='node4', base_node='node4', job_id='stream') 519 self.assert_qmp(result, 'error/desc', 520 "Node 'node4' is not a backing image of 'node4'") 521 522 # Error: cannot specify 'base' and 'base-node' at the same time 523 result = self.vm.qmp('block-stream', device='node4', base=self.imgs[2], base_node='node2', job_id='stream') 524 self.assert_qmp(result, 'error/desc', 525 "'base' and 'base-node' cannot be specified at the same time") 526 527 # Success: the base node is a backing file of the top node 528 result = self.vm.qmp('block-stream', device='node4', base_node='node2', job_id='stream') 529 self.assert_qmp(result, 'return', {}) 530 531 self.wait_until_completed(drive='stream') 532 533 self.assert_no_active_block_jobs() 534 self.vm.shutdown() 535 536 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[4]), 537 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[3]), 538 'image file map matches backing file after streaming') 539 540class TestQuorum(iotests.QMPTestCase): 541 num_children = 3 542 children = [] 543 backing = [] 544 545 @iotests.skip_if_unsupported(['quorum']) 546 def setUp(self): 547 opts = ['driver=quorum', 'vote-threshold=2'] 548 549 # Initialize file names and command-line options 550 for i in range(self.num_children): 551 child_img = os.path.join(iotests.test_dir, 'img-%d.img' % i) 552 backing_img = os.path.join(iotests.test_dir, 'backing-%d.img' % i) 553 self.children.append(child_img) 554 self.backing.append(backing_img) 555 qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') 556 qemu_io('-f', iotests.imgfmt, 557 '-c', 'write -P 0x55 0 1024', backing_img) 558 qemu_img('create', '-f', iotests.imgfmt, 559 '-o', 'backing_file=%s' % backing_img, 560 '-F', iotests.imgfmt, child_img) 561 opts.append("children.%d.file.filename=%s" % (i, child_img)) 562 opts.append("children.%d.node-name=node%d" % (i, i)) 563 564 # Attach the drive to the VM 565 self.vm = iotests.VM() 566 self.vm.add_drive(path = None, opts = ','.join(opts)) 567 self.vm.launch() 568 569 def tearDown(self): 570 self.vm.shutdown() 571 for img in self.children: 572 os.remove(img) 573 for img in self.backing: 574 os.remove(img) 575 576 def test_stream_quorum(self): 577 self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.children[0]), 578 qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.backing[0]), 579 'image file map matches backing file before streaming') 580 581 self.assert_no_active_block_jobs() 582 583 result = self.vm.qmp('block-stream', device='node0', job_id='stream-node0') 584 self.assert_qmp(result, 'return', {}) 585 586 self.wait_until_completed(drive='stream-node0') 587 588 self.assert_no_active_block_jobs() 589 self.vm.shutdown() 590 591 self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.children[0]), 592 qemu_io('-f', iotests.imgfmt, '-c', 'map', self.backing[0]), 593 'image file map does not match backing file after streaming') 594 595class TestSmallerBackingFile(iotests.QMPTestCase): 596 backing_len = 1 * 1024 * 1024 # MB 597 image_len = 2 * backing_len 598 599 def setUp(self): 600 iotests.create_image(backing_img, self.backing_len) 601 qemu_img('create', '-f', iotests.imgfmt, 602 '-o', 'backing_file=%s' % backing_img, 603 '-F', 'raw', test_img, str(self.image_len)) 604 self.vm = iotests.VM().add_drive(test_img) 605 self.vm.launch() 606 607 # If this hangs, then you are missing a fix to complete streaming when the 608 # end of the backing file is reached. 609 def test_stream(self): 610 self.assert_no_active_block_jobs() 611 612 result = self.vm.qmp('block-stream', device='drive0') 613 self.assert_qmp(result, 'return', {}) 614 615 self.wait_until_completed() 616 617 self.assert_no_active_block_jobs() 618 self.vm.shutdown() 619 620class TestErrors(iotests.QMPTestCase): 621 image_len = 2 * 1024 * 1024 # MB 622 623 # this should match STREAM_BUFFER_SIZE/512 in block/stream.c 624 STREAM_BUFFER_SIZE = 512 * 1024 625 626 def create_blkdebug_file(self, name, event, errno): 627 file = open(name, 'w') 628 file.write(''' 629[inject-error] 630state = "1" 631event = "%s" 632errno = "%d" 633immediately = "off" 634once = "on" 635sector = "%d" 636 637[set-state] 638state = "1" 639event = "%s" 640new_state = "2" 641 642[set-state] 643state = "2" 644event = "%s" 645new_state = "1" 646''' % (event, errno, self.STREAM_BUFFER_SIZE // 512, event, event)) 647 file.close() 648 649class TestEIO(TestErrors): 650 def setUp(self): 651 self.blkdebug_file = backing_img + ".blkdebug" 652 iotests.create_image(backing_img, TestErrors.image_len) 653 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 654 qemu_img('create', '-f', iotests.imgfmt, 655 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 656 % (self.blkdebug_file, backing_img), 657 test_img) 658 self.vm = iotests.VM().add_drive(test_img) 659 self.vm.launch() 660 661 def tearDown(self): 662 self.vm.shutdown() 663 os.remove(test_img) 664 os.remove(backing_img) 665 os.remove(self.blkdebug_file) 666 667 def test_report(self): 668 self.assert_no_active_block_jobs() 669 670 result = self.vm.qmp('block-stream', device='drive0') 671 self.assert_qmp(result, 'return', {}) 672 673 completed = False 674 error = False 675 while not completed: 676 for event in self.vm.get_qmp_events(wait=True): 677 if event['event'] == 'BLOCK_JOB_ERROR': 678 self.assert_qmp(event, 'data/device', 'drive0') 679 self.assert_qmp(event, 'data/operation', 'read') 680 error = True 681 elif event['event'] == 'BLOCK_JOB_COMPLETED': 682 self.assertTrue(error, 'job completed unexpectedly') 683 self.assert_qmp(event, 'data/type', 'stream') 684 self.assert_qmp(event, 'data/device', 'drive0') 685 self.assert_qmp(event, 'data/error', 'Input/output error') 686 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 687 self.assert_qmp(event, 'data/len', self.image_len) 688 completed = True 689 elif event['event'] == 'JOB_STATUS_CHANGE': 690 self.assert_qmp(event, 'data/id', 'drive0') 691 692 self.assert_no_active_block_jobs() 693 self.vm.shutdown() 694 695 def test_ignore(self): 696 self.assert_no_active_block_jobs() 697 698 result = self.vm.qmp('block-stream', device='drive0', on_error='ignore') 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 error = True 707 self.assert_qmp(event, 'data/device', 'drive0') 708 self.assert_qmp(event, 'data/operation', 'read') 709 result = self.vm.qmp('query-block-jobs') 710 if result == {'return': []}: 711 # Job finished too quickly 712 continue 713 self.assert_qmp(result, 'return[0]/paused', False) 714 elif event['event'] == 'BLOCK_JOB_COMPLETED': 715 self.assertTrue(error, 'job completed unexpectedly') 716 self.assert_qmp(event, 'data/type', 'stream') 717 self.assert_qmp(event, 'data/device', 'drive0') 718 self.assert_qmp(event, 'data/error', 'Input/output error') 719 self.assert_qmp(event, 'data/offset', self.image_len) 720 self.assert_qmp(event, 'data/len', self.image_len) 721 completed = True 722 elif event['event'] == 'JOB_STATUS_CHANGE': 723 self.assert_qmp(event, 'data/id', 'drive0') 724 725 self.assert_no_active_block_jobs() 726 self.vm.shutdown() 727 728 def test_stop(self): 729 self.assert_no_active_block_jobs() 730 731 result = self.vm.qmp('block-stream', device='drive0', on_error='stop') 732 self.assert_qmp(result, 'return', {}) 733 734 error = False 735 completed = False 736 while not completed: 737 for event in self.vm.get_qmp_events(wait=True): 738 if event['event'] == 'BLOCK_JOB_ERROR': 739 error = True 740 self.assert_qmp(event, 'data/device', 'drive0') 741 self.assert_qmp(event, 'data/operation', 'read') 742 743 result = self.vm.qmp('query-block-jobs') 744 self.assert_qmp(result, 'return[0]/paused', True) 745 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 746 self.assert_qmp(result, 'return[0]/io-status', 'failed') 747 748 result = self.vm.qmp('block-job-resume', device='drive0') 749 self.assert_qmp(result, 'return', {}) 750 751 result = self.vm.qmp('query-block-jobs') 752 if result == {'return': []}: 753 # Race; likely already finished. Check. 754 continue 755 self.assert_qmp(result, 'return[0]/paused', False) 756 self.assert_qmp(result, 'return[0]/io-status', 'ok') 757 elif event['event'] == 'BLOCK_JOB_COMPLETED': 758 self.assertTrue(error, 'job completed unexpectedly') 759 self.assert_qmp(event, 'data/type', 'stream') 760 self.assert_qmp(event, 'data/device', 'drive0') 761 self.assert_qmp_absent(event, 'data/error') 762 self.assert_qmp(event, 'data/offset', self.image_len) 763 self.assert_qmp(event, 'data/len', self.image_len) 764 completed = True 765 elif event['event'] == 'JOB_STATUS_CHANGE': 766 self.assert_qmp(event, 'data/id', 'drive0') 767 768 self.assert_no_active_block_jobs() 769 self.vm.shutdown() 770 771 def test_enospc(self): 772 self.assert_no_active_block_jobs() 773 774 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 775 self.assert_qmp(result, 'return', {}) 776 777 completed = False 778 error = False 779 while not completed: 780 for event in self.vm.get_qmp_events(wait=True): 781 if event['event'] == 'BLOCK_JOB_ERROR': 782 self.assert_qmp(event, 'data/device', 'drive0') 783 self.assert_qmp(event, 'data/operation', 'read') 784 error = True 785 elif event['event'] == 'BLOCK_JOB_COMPLETED': 786 self.assertTrue(error, 'job completed unexpectedly') 787 self.assert_qmp(event, 'data/type', 'stream') 788 self.assert_qmp(event, 'data/device', 'drive0') 789 self.assert_qmp(event, 'data/error', 'Input/output error') 790 self.assert_qmp(event, 'data/offset', self.STREAM_BUFFER_SIZE) 791 self.assert_qmp(event, 'data/len', self.image_len) 792 completed = True 793 elif event['event'] == 'JOB_STATUS_CHANGE': 794 self.assert_qmp(event, 'data/id', 'drive0') 795 796 self.assert_no_active_block_jobs() 797 self.vm.shutdown() 798 799class TestENOSPC(TestErrors): 800 def setUp(self): 801 self.blkdebug_file = backing_img + ".blkdebug" 802 iotests.create_image(backing_img, TestErrors.image_len) 803 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 28) 804 qemu_img('create', '-f', iotests.imgfmt, 805 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 806 % (self.blkdebug_file, backing_img), 807 test_img) 808 self.vm = iotests.VM().add_drive(test_img) 809 self.vm.launch() 810 811 def tearDown(self): 812 self.vm.shutdown() 813 os.remove(test_img) 814 os.remove(backing_img) 815 os.remove(self.blkdebug_file) 816 817 def test_enospc(self): 818 self.assert_no_active_block_jobs() 819 820 result = self.vm.qmp('block-stream', device='drive0', on_error='enospc') 821 self.assert_qmp(result, 'return', {}) 822 823 error = False 824 completed = False 825 while not completed: 826 for event in self.vm.get_qmp_events(wait=True): 827 if event['event'] == 'BLOCK_JOB_ERROR': 828 self.assert_qmp(event, 'data/device', 'drive0') 829 self.assert_qmp(event, 'data/operation', 'read') 830 error = True 831 832 result = self.vm.qmp('query-block-jobs') 833 self.assert_qmp(result, 'return[0]/paused', True) 834 self.assert_qmp(result, 'return[0]/offset', self.STREAM_BUFFER_SIZE) 835 self.assert_qmp(result, 'return[0]/io-status', 'nospace') 836 837 result = self.vm.qmp('block-job-resume', device='drive0') 838 self.assert_qmp(result, 'return', {}) 839 840 result = self.vm.qmp('query-block-jobs') 841 if result == {'return': []}: 842 # Race; likely already finished. Check. 843 continue 844 self.assert_qmp(result, 'return[0]/paused', False) 845 self.assert_qmp(result, 'return[0]/io-status', 'ok') 846 elif event['event'] == 'BLOCK_JOB_COMPLETED': 847 self.assertTrue(error, 'job completed unexpectedly') 848 self.assert_qmp(event, 'data/type', 'stream') 849 self.assert_qmp(event, 'data/device', 'drive0') 850 self.assert_qmp_absent(event, 'data/error') 851 self.assert_qmp(event, 'data/offset', self.image_len) 852 self.assert_qmp(event, 'data/len', self.image_len) 853 completed = True 854 elif event['event'] == 'JOB_STATUS_CHANGE': 855 self.assert_qmp(event, 'data/id', 'drive0') 856 857 self.assert_no_active_block_jobs() 858 self.vm.shutdown() 859 860class TestStreamStop(iotests.QMPTestCase): 861 image_len = 8 * 1024 * 1024 * 1024 # GB 862 863 def setUp(self): 864 qemu_img('create', backing_img, str(TestStreamStop.image_len)) 865 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 866 qemu_img('create', '-f', iotests.imgfmt, 867 '-o', 'backing_file=%s' % backing_img, 868 '-F', 'raw', test_img) 869 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 870 self.vm = iotests.VM().add_drive("blkdebug::" + test_img) 871 self.vm.launch() 872 873 def tearDown(self): 874 self.vm.shutdown() 875 os.remove(test_img) 876 os.remove(backing_img) 877 878 def test_stream_stop(self): 879 self.assert_no_active_block_jobs() 880 881 self.vm.pause_drive('drive0') 882 result = self.vm.qmp('block-stream', device='drive0') 883 self.assert_qmp(result, 'return', {}) 884 885 time.sleep(0.1) 886 events = self.vm.get_qmp_events(wait=False) 887 for e in events: 888 self.assert_qmp(e, 'event', 'JOB_STATUS_CHANGE') 889 self.assert_qmp(e, 'data/id', 'drive0') 890 891 self.cancel_and_wait(resume=True) 892 893class TestSetSpeed(iotests.QMPTestCase): 894 image_len = 80 * 1024 * 1024 # MB 895 896 def setUp(self): 897 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 898 qemu_io('-f', 'raw', '-c', 'write -P 0x1 0 32M', backing_img) 899 qemu_img('create', '-f', iotests.imgfmt, 900 '-o', 'backing_file=%s' % backing_img, 901 '-F', 'raw', test_img) 902 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 32M 32M', test_img) 903 self.vm = iotests.VM().add_drive('blkdebug::' + test_img) 904 self.vm.launch() 905 906 def tearDown(self): 907 self.vm.shutdown() 908 os.remove(test_img) 909 os.remove(backing_img) 910 911 # This is a short performance test which is not run by default. 912 # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput" 913 def perf_test_throughput(self): 914 self.assert_no_active_block_jobs() 915 916 result = self.vm.qmp('block-stream', device='drive0') 917 self.assert_qmp(result, 'return', {}) 918 919 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 920 self.assert_qmp(result, 'return', {}) 921 922 self.wait_until_completed() 923 924 self.assert_no_active_block_jobs() 925 926 def test_set_speed(self): 927 self.assert_no_active_block_jobs() 928 929 self.vm.pause_drive('drive0') 930 result = self.vm.qmp('block-stream', device='drive0') 931 self.assert_qmp(result, 'return', {}) 932 933 # Default speed is 0 934 result = self.vm.qmp('query-block-jobs') 935 self.assert_qmp(result, 'return[0]/device', 'drive0') 936 self.assert_qmp(result, 'return[0]/speed', 0) 937 938 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 939 self.assert_qmp(result, 'return', {}) 940 941 # Ensure the speed we set was accepted 942 result = self.vm.qmp('query-block-jobs') 943 self.assert_qmp(result, 'return[0]/device', 'drive0') 944 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 945 946 self.cancel_and_wait(resume=True) 947 self.vm.pause_drive('drive0') 948 949 # Check setting speed in block-stream works 950 result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024) 951 self.assert_qmp(result, 'return', {}) 952 953 result = self.vm.qmp('query-block-jobs') 954 self.assert_qmp(result, 'return[0]/device', 'drive0') 955 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 956 957 self.cancel_and_wait(resume=True) 958 959 def test_set_speed_invalid(self): 960 self.assert_no_active_block_jobs() 961 962 result = self.vm.qmp('block-stream', device='drive0', speed=-1) 963 self.assert_qmp(result, 'error/desc', "Parameter 'speed' expects a non-negative value") 964 965 self.assert_no_active_block_jobs() 966 967 self.vm.pause_drive('drive0') 968 result = self.vm.qmp('block-stream', device='drive0') 969 self.assert_qmp(result, 'return', {}) 970 971 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 972 self.assert_qmp(result, 'error/desc', "Parameter 'speed' expects a non-negative value") 973 974 self.cancel_and_wait(resume=True) 975 976if __name__ == '__main__': 977 iotests.main(supported_fmts=['qcow2', 'qed'], 978 supported_protocols=['file']) 979