1#!/usr/bin/env python3 2# 3# Tests for image mirroring. 4# 5# Copyright (C) 2012 Red Hat, Inc. 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 re 24import iotests 25from iotests import qemu_img, qemu_io 26 27backing_img = os.path.join(iotests.test_dir, 'backing.img') 28target_backing_img = os.path.join(iotests.test_dir, 'target-backing.img') 29test_img = os.path.join(iotests.test_dir, 'test.img') 30target_img = os.path.join(iotests.test_dir, 'target.img') 31 32quorum_img1 = os.path.join(iotests.test_dir, 'quorum1.img') 33quorum_img2 = os.path.join(iotests.test_dir, 'quorum2.img') 34quorum_img3 = os.path.join(iotests.test_dir, 'quorum3.img') 35quorum_repair_img = os.path.join(iotests.test_dir, 'quorum_repair.img') 36quorum_snapshot_file = os.path.join(iotests.test_dir, 'quorum_snapshot.img') 37 38nbd_sock_path = os.path.join(iotests.sock_dir, 'nbd.sock') 39 40class TestSingleDrive(iotests.QMPTestCase): 41 image_len = 1 * 1024 * 1024 # MB 42 qmp_cmd = 'drive-mirror' 43 qmp_target = target_img 44 45 def setUp(self): 46 iotests.create_image(backing_img, self.image_len) 47 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 48 self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=base") 49 if iotests.qemu_default_machine == 'pc': 50 self.vm.add_drive(None, 'media=cdrom', 'ide') 51 self.vm.launch() 52 53 def tearDown(self): 54 self.vm.shutdown() 55 os.remove(test_img) 56 os.remove(backing_img) 57 try: 58 os.remove(target_img) 59 except OSError: 60 pass 61 62 def test_complete(self): 63 self.assert_no_active_block_jobs() 64 65 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 66 target=self.qmp_target) 67 self.assert_qmp(result, 'return', {}) 68 69 self.complete_and_wait() 70 result = self.vm.qmp('query-block') 71 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 72 self.vm.shutdown() 73 self.assertTrue(iotests.compare_images(test_img, target_img), 74 'target image does not match source after mirroring') 75 76 def test_cancel(self): 77 self.assert_no_active_block_jobs() 78 79 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 80 target=self.qmp_target) 81 self.assert_qmp(result, 'return', {}) 82 83 self.cancel_and_wait(force=True) 84 result = self.vm.qmp('query-block') 85 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 86 87 def test_cancel_after_ready(self): 88 self.assert_no_active_block_jobs() 89 90 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 91 target=self.qmp_target) 92 self.assert_qmp(result, 'return', {}) 93 94 self.wait_ready_and_cancel() 95 result = self.vm.qmp('query-block') 96 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 97 self.vm.shutdown() 98 self.assertTrue(iotests.compare_images(test_img, target_img), 99 'target image does not match source after mirroring') 100 101 def test_pause(self): 102 self.assert_no_active_block_jobs() 103 104 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 105 target=self.qmp_target) 106 self.assert_qmp(result, 'return', {}) 107 108 self.pause_job('drive0') 109 110 result = self.vm.qmp('query-block-jobs') 111 offset = self.dictpath(result, 'return[0]/offset') 112 113 time.sleep(0.5) 114 result = self.vm.qmp('query-block-jobs') 115 self.assert_qmp(result, 'return[0]/offset', offset) 116 117 result = self.vm.qmp('block-job-resume', device='drive0') 118 self.assert_qmp(result, 'return', {}) 119 120 self.complete_and_wait() 121 self.vm.shutdown() 122 self.assertTrue(iotests.compare_images(test_img, target_img), 123 'target image does not match source after mirroring') 124 125 def test_small_buffer(self): 126 self.assert_no_active_block_jobs() 127 128 # A small buffer is rounded up automatically 129 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 130 buf_size=4096, target=self.qmp_target) 131 self.assert_qmp(result, 'return', {}) 132 133 self.complete_and_wait() 134 result = self.vm.qmp('query-block') 135 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 136 self.vm.shutdown() 137 self.assertTrue(iotests.compare_images(test_img, target_img), 138 'target image does not match source after mirroring') 139 140 def test_small_buffer2(self): 141 self.assert_no_active_block_jobs() 142 143 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,size=%d' 144 % (self.image_len, self.image_len), target_img) 145 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 146 buf_size=65536, mode='existing', target=self.qmp_target) 147 self.assert_qmp(result, 'return', {}) 148 149 self.complete_and_wait() 150 result = self.vm.qmp('query-block') 151 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 152 self.vm.shutdown() 153 self.assertTrue(iotests.compare_images(test_img, target_img), 154 'target image does not match source after mirroring') 155 156 def test_large_cluster(self): 157 self.assert_no_active_block_jobs() 158 159 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' 160 % (self.image_len, backing_img), target_img) 161 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 162 mode='existing', target=self.qmp_target) 163 self.assert_qmp(result, 'return', {}) 164 165 self.complete_and_wait() 166 result = self.vm.qmp('query-block') 167 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 168 self.vm.shutdown() 169 self.assertTrue(iotests.compare_images(test_img, target_img), 170 'target image does not match source after mirroring') 171 172 # Tests that the insertion of the mirror_top filter node doesn't make a 173 # difference to query-block 174 def test_implicit_node(self): 175 self.assert_no_active_block_jobs() 176 177 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 178 target=self.qmp_target) 179 self.assert_qmp(result, 'return', {}) 180 181 result = self.vm.qmp('query-block') 182 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 183 self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) 184 self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img) 185 self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) 186 self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) 187 self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img) 188 189 result = self.vm.qmp('query-blockstats') 190 self.assert_qmp(result, 'return[0]/node-name', 'top') 191 self.assert_qmp(result, 'return[0]/backing/node-name', 'base') 192 193 self.cancel_and_wait(force=True) 194 result = self.vm.qmp('query-block') 195 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 196 self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) 197 self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img) 198 self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) 199 self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) 200 self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img) 201 202 result = self.vm.qmp('query-blockstats') 203 self.assert_qmp(result, 'return[0]/node-name', 'top') 204 self.assert_qmp(result, 'return[0]/backing/node-name', 'base') 205 206 def test_medium_not_found(self): 207 if iotests.qemu_default_machine != 'pc': 208 return 209 210 result = self.vm.qmp(self.qmp_cmd, device='ide1-cd0', sync='full', 211 target=self.qmp_target) 212 self.assert_qmp(result, 'error/class', 'GenericError') 213 214 def test_image_not_found(self): 215 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 216 mode='existing', target=self.qmp_target) 217 self.assert_qmp(result, 'error/class', 'GenericError') 218 219 def test_device_not_found(self): 220 result = self.vm.qmp(self.qmp_cmd, device='nonexistent', sync='full', 221 target=self.qmp_target) 222 self.assert_qmp(result, 'error/class', 'GenericError') 223 224class TestSingleBlockdev(TestSingleDrive): 225 qmp_cmd = 'blockdev-mirror' 226 qmp_target = 'node1' 227 228 def setUp(self): 229 TestSingleDrive.setUp(self) 230 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img) 231 args = {'driver': iotests.imgfmt, 232 'node-name': self.qmp_target, 233 'file': { 'filename': target_img, 'driver': 'file' } } 234 result = self.vm.qmp("blockdev-add", **args) 235 self.assert_qmp(result, 'return', {}) 236 237 def test_mirror_to_self(self): 238 result = self.vm.qmp(self.qmp_cmd, job_id='job0', 239 device=self.qmp_target, sync='full', 240 target=self.qmp_target) 241 self.assert_qmp(result, 'error/class', 'GenericError') 242 243 def do_test_resize(self, device, node): 244 def pre_finalize(): 245 if device: 246 result = self.vm.qmp('block_resize', device=device, size=65536) 247 self.assert_qmp(result, 'error/class', 'GenericError') 248 249 result = self.vm.qmp('block_resize', node_name=node, size=65536) 250 self.assert_qmp(result, 'error/class', 'GenericError') 251 252 result = self.vm.qmp(self.qmp_cmd, job_id='job0', device='drive0', 253 sync='full', target=self.qmp_target, 254 auto_finalize=False, auto_dismiss=False) 255 self.assert_qmp(result, 'return', {}) 256 257 result = self.vm.run_job('job0', auto_finalize=False, 258 pre_finalize=pre_finalize) 259 self.assertEqual(result, None) 260 261 def test_source_resize(self): 262 self.do_test_resize('drive0', 'top') 263 264 def test_target_resize(self): 265 self.do_test_resize(None, self.qmp_target) 266 267 def do_test_target_size(self, size): 268 result = self.vm.qmp('block_resize', node_name=self.qmp_target, 269 size=size) 270 self.assert_qmp(result, 'return', {}) 271 272 result = self.vm.qmp(self.qmp_cmd, job_id='job0', 273 device='drive0', sync='full', auto_dismiss=False, 274 target=self.qmp_target) 275 self.assert_qmp(result, 'return', {}) 276 277 result = self.vm.run_job('job0') 278 self.assertEqual(result, 'Source and target image have different sizes') 279 280 def test_small_target(self): 281 self.do_test_target_size(self.image_len // 2) 282 283 def test_large_target(self): 284 self.do_test_target_size(self.image_len * 2) 285 286 test_large_cluster = None 287 test_image_not_found = None 288 test_small_buffer2 = None 289 290class TestSingleDriveZeroLength(TestSingleDrive): 291 image_len = 0 292 test_small_buffer2 = None 293 test_large_cluster = None 294 295class TestSingleBlockdevZeroLength(TestSingleBlockdev): 296 image_len = 0 297 test_small_target = None 298 test_large_target = None 299 300class TestSingleDriveUnalignedLength(TestSingleDrive): 301 image_len = 1025 * 1024 302 test_small_buffer2 = None 303 test_large_cluster = None 304 305class TestSingleBlockdevUnalignedLength(TestSingleBlockdev): 306 image_len = 1025 * 1024 307 308class TestMirrorNoBacking(iotests.QMPTestCase): 309 image_len = 2 * 1024 * 1024 # MB 310 311 def setUp(self): 312 iotests.create_image(backing_img, TestMirrorNoBacking.image_len) 313 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 314 self.vm = iotests.VM().add_drive(test_img) 315 self.vm.launch() 316 317 def tearDown(self): 318 self.vm.shutdown() 319 os.remove(test_img) 320 os.remove(backing_img) 321 try: 322 os.remove(target_backing_img) 323 except: 324 pass 325 os.remove(target_img) 326 327 def test_complete(self): 328 self.assert_no_active_block_jobs() 329 330 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img) 331 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 332 mode='existing', target=target_img) 333 self.assert_qmp(result, 'return', {}) 334 335 self.complete_and_wait() 336 result = self.vm.qmp('query-block') 337 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 338 self.vm.shutdown() 339 self.assertTrue(iotests.compare_images(test_img, target_img), 340 'target image does not match source after mirroring') 341 342 def test_cancel(self): 343 self.assert_no_active_block_jobs() 344 345 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img) 346 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 347 mode='existing', target=target_img) 348 self.assert_qmp(result, 'return', {}) 349 350 self.wait_ready_and_cancel() 351 result = self.vm.qmp('query-block') 352 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 353 self.vm.shutdown() 354 self.assertTrue(iotests.compare_images(test_img, target_img), 355 'target image does not match source after mirroring') 356 357 def test_large_cluster(self): 358 self.assert_no_active_block_jobs() 359 360 # qemu-img create fails if the image is not there 361 qemu_img('create', '-f', iotests.imgfmt, '-o', 'size=%d' 362 %(TestMirrorNoBacking.image_len), target_backing_img) 363 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' 364 % (TestMirrorNoBacking.image_len, target_backing_img), target_img) 365 366 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 367 mode='existing', target=target_img) 368 self.assert_qmp(result, 'return', {}) 369 370 self.complete_and_wait() 371 result = self.vm.qmp('query-block') 372 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 373 self.vm.shutdown() 374 self.assertTrue(iotests.compare_images(test_img, target_img), 375 'target image does not match source after mirroring') 376 377class TestMirrorResized(iotests.QMPTestCase): 378 backing_len = 1 * 1024 * 1024 # MB 379 image_len = 2 * 1024 * 1024 # MB 380 381 def setUp(self): 382 iotests.create_image(backing_img, TestMirrorResized.backing_len) 383 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 384 qemu_img('resize', test_img, '2M') 385 self.vm = iotests.VM().add_drive(test_img) 386 self.vm.launch() 387 388 def tearDown(self): 389 self.vm.shutdown() 390 os.remove(test_img) 391 os.remove(backing_img) 392 try: 393 os.remove(target_img) 394 except OSError: 395 pass 396 397 def test_complete_top(self): 398 self.assert_no_active_block_jobs() 399 400 result = self.vm.qmp('drive-mirror', device='drive0', sync='top', 401 target=target_img) 402 self.assert_qmp(result, 'return', {}) 403 404 self.complete_and_wait() 405 result = self.vm.qmp('query-block') 406 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 407 self.vm.shutdown() 408 self.assertTrue(iotests.compare_images(test_img, target_img), 409 'target image does not match source after mirroring') 410 411 def test_complete_full(self): 412 self.assert_no_active_block_jobs() 413 414 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 415 target=target_img) 416 self.assert_qmp(result, 'return', {}) 417 418 self.complete_and_wait() 419 result = self.vm.qmp('query-block') 420 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 421 self.vm.shutdown() 422 self.assertTrue(iotests.compare_images(test_img, target_img), 423 'target image does not match source after mirroring') 424 425class TestReadErrors(iotests.QMPTestCase): 426 image_len = 2 * 1024 * 1024 # MB 427 428 # this should be a multiple of twice the default granularity 429 # so that we hit this offset first in state 1 430 MIRROR_GRANULARITY = 1024 * 1024 431 432 def create_blkdebug_file(self, name, event, errno): 433 file = open(name, 'w') 434 file.write(''' 435[inject-error] 436state = "1" 437event = "%s" 438errno = "%d" 439immediately = "off" 440once = "on" 441sector = "%d" 442 443[set-state] 444state = "1" 445event = "%s" 446new_state = "2" 447 448[set-state] 449state = "2" 450event = "%s" 451new_state = "1" 452''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) 453 file.close() 454 455 def setUp(self): 456 self.blkdebug_file = backing_img + ".blkdebug" 457 iotests.create_image(backing_img, TestReadErrors.image_len) 458 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 459 qemu_img('create', '-f', iotests.imgfmt, 460 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 461 % (self.blkdebug_file, backing_img), 462 test_img) 463 # Write something for tests that use sync='top' 464 qemu_io('-c', 'write %d 512' % (self.MIRROR_GRANULARITY + 65536), 465 test_img) 466 self.vm = iotests.VM().add_drive(test_img) 467 self.vm.launch() 468 469 def tearDown(self): 470 self.vm.shutdown() 471 os.remove(test_img) 472 os.remove(target_img) 473 os.remove(backing_img) 474 os.remove(self.blkdebug_file) 475 476 def test_report_read(self): 477 self.assert_no_active_block_jobs() 478 479 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 480 target=target_img) 481 self.assert_qmp(result, 'return', {}) 482 483 completed = False 484 error = False 485 while not completed: 486 for event in self.vm.get_qmp_events(wait=True): 487 if event['event'] == 'BLOCK_JOB_ERROR': 488 self.assert_qmp(event, 'data/device', 'drive0') 489 self.assert_qmp(event, 'data/operation', 'read') 490 error = True 491 elif event['event'] == 'BLOCK_JOB_READY': 492 self.assertTrue(False, 'job completed unexpectedly') 493 elif event['event'] == 'BLOCK_JOB_COMPLETED': 494 self.assertTrue(error, 'job completed unexpectedly') 495 self.assert_qmp(event, 'data/type', 'mirror') 496 self.assert_qmp(event, 'data/device', 'drive0') 497 self.assert_qmp(event, 'data/error', 'Input/output error') 498 completed = True 499 elif event['event'] == 'JOB_STATUS_CHANGE': 500 self.assert_qmp(event, 'data/id', 'drive0') 501 502 self.assert_no_active_block_jobs() 503 504 def test_ignore_read(self): 505 self.assert_no_active_block_jobs() 506 507 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 508 target=target_img, on_source_error='ignore') 509 self.assert_qmp(result, 'return', {}) 510 511 event = self.vm.get_qmp_event(wait=True) 512 while event['event'] == 'JOB_STATUS_CHANGE': 513 self.assert_qmp(event, 'data/id', 'drive0') 514 event = self.vm.get_qmp_event(wait=True) 515 516 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 517 self.assert_qmp(event, 'data/device', 'drive0') 518 self.assert_qmp(event, 'data/operation', 'read') 519 result = self.vm.qmp('query-block-jobs') 520 self.assert_qmp(result, 'return[0]/paused', False) 521 self.complete_and_wait() 522 523 def test_large_cluster(self): 524 self.assert_no_active_block_jobs() 525 526 # Test COW into the target image. The first half of the 527 # cluster at MIRROR_GRANULARITY has to be copied from 528 # backing_img, even though sync='top'. 529 qemu_img('create', '-f', iotests.imgfmt, '-ocluster_size=131072,backing_file=%s' %(backing_img), target_img) 530 result = self.vm.qmp('drive-mirror', device='drive0', sync='top', 531 on_source_error='ignore', 532 mode='existing', target=target_img) 533 self.assert_qmp(result, 'return', {}) 534 535 event = self.vm.get_qmp_event(wait=True) 536 while event['event'] == 'JOB_STATUS_CHANGE': 537 self.assert_qmp(event, 'data/id', 'drive0') 538 event = self.vm.get_qmp_event(wait=True) 539 540 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 541 self.assert_qmp(event, 'data/device', 'drive0') 542 self.assert_qmp(event, 'data/operation', 'read') 543 result = self.vm.qmp('query-block-jobs') 544 self.assert_qmp(result, 'return[0]/paused', False) 545 self.complete_and_wait() 546 self.vm.shutdown() 547 548 # Detach blkdebug to compare images successfully 549 qemu_img('rebase', '-f', iotests.imgfmt, '-u', '-b', backing_img, test_img) 550 self.assertTrue(iotests.compare_images(test_img, target_img), 551 'target image does not match source after mirroring') 552 553 def test_stop_read(self): 554 self.assert_no_active_block_jobs() 555 556 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 557 target=target_img, on_source_error='stop') 558 self.assert_qmp(result, 'return', {}) 559 560 error = False 561 ready = False 562 while not ready: 563 for event in self.vm.get_qmp_events(wait=True): 564 if event['event'] == 'BLOCK_JOB_ERROR': 565 self.assert_qmp(event, 'data/device', 'drive0') 566 self.assert_qmp(event, 'data/operation', 'read') 567 568 result = self.vm.qmp('query-block-jobs') 569 self.assert_qmp(result, 'return[0]/paused', True) 570 self.assert_qmp(result, 'return[0]/io-status', 'failed') 571 572 result = self.vm.qmp('block-job-resume', device='drive0') 573 self.assert_qmp(result, 'return', {}) 574 error = True 575 elif event['event'] == 'BLOCK_JOB_READY': 576 self.assertTrue(error, 'job completed unexpectedly') 577 self.assert_qmp(event, 'data/device', 'drive0') 578 ready = True 579 580 result = self.vm.qmp('query-block-jobs') 581 self.assert_qmp(result, 'return[0]/paused', False) 582 self.assert_qmp(result, 'return[0]/io-status', 'ok') 583 584 self.complete_and_wait(wait_ready=False) 585 self.assert_no_active_block_jobs() 586 587class TestWriteErrors(iotests.QMPTestCase): 588 image_len = 2 * 1024 * 1024 # MB 589 590 # this should be a multiple of twice the default granularity 591 # so that we hit this offset first in state 1 592 MIRROR_GRANULARITY = 1024 * 1024 593 594 def create_blkdebug_file(self, name, event, errno): 595 file = open(name, 'w') 596 file.write(''' 597[inject-error] 598state = "1" 599event = "%s" 600errno = "%d" 601immediately = "off" 602once = "on" 603sector = "%d" 604 605[set-state] 606state = "1" 607event = "%s" 608new_state = "2" 609 610[set-state] 611state = "2" 612event = "%s" 613new_state = "1" 614''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) 615 file.close() 616 617 def setUp(self): 618 self.blkdebug_file = target_img + ".blkdebug" 619 iotests.create_image(backing_img, TestWriteErrors.image_len) 620 self.create_blkdebug_file(self.blkdebug_file, "write_aio", 5) 621 qemu_img('create', '-f', iotests.imgfmt, '-obacking_file=%s' %(backing_img), test_img) 622 self.vm = iotests.VM().add_drive(test_img) 623 self.target_img = 'blkdebug:%s:%s' % (self.blkdebug_file, target_img) 624 qemu_img('create', '-f', iotests.imgfmt, '-osize=%d' %(TestWriteErrors.image_len), target_img) 625 self.vm.launch() 626 627 def tearDown(self): 628 self.vm.shutdown() 629 os.remove(test_img) 630 os.remove(target_img) 631 os.remove(backing_img) 632 os.remove(self.blkdebug_file) 633 634 def test_report_write(self): 635 self.assert_no_active_block_jobs() 636 637 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 638 mode='existing', target=self.target_img) 639 self.assert_qmp(result, 'return', {}) 640 641 completed = False 642 error = False 643 while not completed: 644 for event in self.vm.get_qmp_events(wait=True): 645 if event['event'] == 'BLOCK_JOB_ERROR': 646 self.assert_qmp(event, 'data/device', 'drive0') 647 self.assert_qmp(event, 'data/operation', 'write') 648 error = True 649 elif event['event'] == 'BLOCK_JOB_READY': 650 self.assertTrue(False, 'job completed unexpectedly') 651 elif event['event'] == 'BLOCK_JOB_COMPLETED': 652 self.assertTrue(error, 'job completed unexpectedly') 653 self.assert_qmp(event, 'data/type', 'mirror') 654 self.assert_qmp(event, 'data/device', 'drive0') 655 self.assert_qmp(event, 'data/error', 'Input/output error') 656 completed = True 657 658 self.assert_no_active_block_jobs() 659 660 def test_ignore_write(self): 661 self.assert_no_active_block_jobs() 662 663 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 664 mode='existing', target=self.target_img, 665 on_target_error='ignore') 666 self.assert_qmp(result, 'return', {}) 667 668 event = self.vm.event_wait(name='BLOCK_JOB_ERROR') 669 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 670 self.assert_qmp(event, 'data/device', 'drive0') 671 self.assert_qmp(event, 'data/operation', 'write') 672 result = self.vm.qmp('query-block-jobs') 673 self.assert_qmp(result, 'return[0]/paused', False) 674 self.complete_and_wait() 675 676 def test_stop_write(self): 677 self.assert_no_active_block_jobs() 678 679 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 680 mode='existing', target=self.target_img, 681 on_target_error='stop') 682 self.assert_qmp(result, 'return', {}) 683 684 error = False 685 ready = False 686 while not ready: 687 for event in self.vm.get_qmp_events(wait=True): 688 if event['event'] == 'BLOCK_JOB_ERROR': 689 self.assert_qmp(event, 'data/device', 'drive0') 690 self.assert_qmp(event, 'data/operation', 'write') 691 692 result = self.vm.qmp('query-block-jobs') 693 self.assert_qmp(result, 'return[0]/paused', True) 694 self.assert_qmp(result, 'return[0]/io-status', 'failed') 695 696 result = self.vm.qmp('block-job-resume', device='drive0') 697 self.assert_qmp(result, 'return', {}) 698 699 result = self.vm.qmp('query-block-jobs') 700 self.assert_qmp(result, 'return[0]/paused', False) 701 self.assert_qmp(result, 'return[0]/io-status', 'ok') 702 error = True 703 elif event['event'] == 'BLOCK_JOB_READY': 704 self.assertTrue(error, 'job completed unexpectedly') 705 self.assert_qmp(event, 'data/device', 'drive0') 706 ready = True 707 708 self.complete_and_wait(wait_ready=False) 709 self.assert_no_active_block_jobs() 710 711class TestSetSpeed(iotests.QMPTestCase): 712 image_len = 80 * 1024 * 1024 # MB 713 714 def setUp(self): 715 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 716 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 717 self.vm = iotests.VM().add_drive(test_img) 718 self.vm.launch() 719 720 def tearDown(self): 721 self.vm.shutdown() 722 os.remove(test_img) 723 os.remove(backing_img) 724 os.remove(target_img) 725 726 def test_set_speed(self): 727 self.assert_no_active_block_jobs() 728 729 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 730 target=target_img) 731 self.assert_qmp(result, 'return', {}) 732 733 # Default speed is 0 734 result = self.vm.qmp('query-block-jobs') 735 self.assert_qmp(result, 'return[0]/device', 'drive0') 736 self.assert_qmp(result, 'return[0]/speed', 0) 737 738 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 739 self.assert_qmp(result, 'return', {}) 740 741 # Ensure the speed we set was accepted 742 result = self.vm.qmp('query-block-jobs') 743 self.assert_qmp(result, 'return[0]/device', 'drive0') 744 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 745 746 self.wait_ready_and_cancel() 747 748 # Check setting speed in drive-mirror works 749 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 750 target=target_img, speed=4*1024*1024) 751 self.assert_qmp(result, 'return', {}) 752 753 result = self.vm.qmp('query-block-jobs') 754 self.assert_qmp(result, 'return[0]/device', 'drive0') 755 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 756 757 self.wait_ready_and_cancel() 758 759 def test_set_speed_invalid(self): 760 self.assert_no_active_block_jobs() 761 762 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 763 target=target_img, speed=-1) 764 self.assert_qmp(result, 'error/class', 'GenericError') 765 766 self.assert_no_active_block_jobs() 767 768 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 769 target=target_img) 770 self.assert_qmp(result, 'return', {}) 771 772 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 773 self.assert_qmp(result, 'error/class', 'GenericError') 774 775 self.wait_ready_and_cancel() 776 777class TestUnbackedSource(iotests.QMPTestCase): 778 image_len = 2 * 1024 * 1024 # MB 779 780 def setUp(self): 781 qemu_img('create', '-f', iotests.imgfmt, test_img, 782 str(TestUnbackedSource.image_len)) 783 self.vm = iotests.VM() 784 self.vm.launch() 785 result = self.vm.qmp('blockdev-add', node_name='drive0', 786 driver=iotests.imgfmt, 787 file={ 788 'driver': 'file', 789 'filename': test_img, 790 }) 791 self.assert_qmp(result, 'return', {}) 792 793 def tearDown(self): 794 self.vm.shutdown() 795 os.remove(test_img) 796 os.remove(target_img) 797 798 def test_absolute_paths_full(self): 799 self.assert_no_active_block_jobs() 800 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 801 sync='full', target=target_img, 802 mode='absolute-paths') 803 self.assert_qmp(result, 'return', {}) 804 self.complete_and_wait() 805 self.assert_no_active_block_jobs() 806 807 def test_absolute_paths_top(self): 808 self.assert_no_active_block_jobs() 809 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 810 sync='top', target=target_img, 811 mode='absolute-paths') 812 self.assert_qmp(result, 'return', {}) 813 self.complete_and_wait() 814 self.assert_no_active_block_jobs() 815 816 def test_absolute_paths_none(self): 817 self.assert_no_active_block_jobs() 818 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 819 sync='none', target=target_img, 820 mode='absolute-paths') 821 self.assert_qmp(result, 'return', {}) 822 self.complete_and_wait() 823 self.assert_no_active_block_jobs() 824 825 def test_existing_full(self): 826 qemu_img('create', '-f', iotests.imgfmt, target_img, 827 str(self.image_len)) 828 qemu_io('-c', 'write -P 42 0 64k', target_img) 829 830 self.assert_no_active_block_jobs() 831 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 832 sync='full', target=target_img, mode='existing') 833 self.assert_qmp(result, 'return', {}) 834 self.complete_and_wait() 835 self.assert_no_active_block_jobs() 836 837 result = self.vm.qmp('blockdev-del', node_name='drive0') 838 self.assert_qmp(result, 'return', {}) 839 840 self.assertTrue(iotests.compare_images(test_img, target_img), 841 'target image does not match source after mirroring') 842 843 def test_blockdev_full(self): 844 qemu_img('create', '-f', iotests.imgfmt, target_img, 845 str(self.image_len)) 846 qemu_io('-c', 'write -P 42 0 64k', target_img) 847 848 result = self.vm.qmp('blockdev-add', node_name='target', 849 driver=iotests.imgfmt, 850 file={ 851 'driver': 'file', 852 'filename': target_img, 853 }) 854 self.assert_qmp(result, 'return', {}) 855 856 self.assert_no_active_block_jobs() 857 result = self.vm.qmp('blockdev-mirror', job_id='drive0', device='drive0', 858 sync='full', target='target') 859 self.assert_qmp(result, 'return', {}) 860 self.complete_and_wait() 861 self.assert_no_active_block_jobs() 862 863 result = self.vm.qmp('blockdev-del', node_name='drive0') 864 self.assert_qmp(result, 'return', {}) 865 866 result = self.vm.qmp('blockdev-del', node_name='target') 867 self.assert_qmp(result, 'return', {}) 868 869 self.assertTrue(iotests.compare_images(test_img, target_img), 870 'target image does not match source after mirroring') 871 872class TestGranularity(iotests.QMPTestCase): 873 image_len = 10 * 1024 * 1024 # MB 874 875 def setUp(self): 876 qemu_img('create', '-f', iotests.imgfmt, test_img, 877 str(TestGranularity.image_len)) 878 qemu_io('-c', 'write 0 %d' % (self.image_len), 879 test_img) 880 self.vm = iotests.VM().add_drive(test_img) 881 self.vm.launch() 882 883 def tearDown(self): 884 self.vm.shutdown() 885 self.assertTrue(iotests.compare_images(test_img, target_img), 886 'target image does not match source after mirroring') 887 os.remove(test_img) 888 os.remove(target_img) 889 890 def test_granularity(self): 891 self.assert_no_active_block_jobs() 892 result = self.vm.qmp('drive-mirror', device='drive0', 893 sync='full', target=target_img, 894 mode='absolute-paths', granularity=8192) 895 self.assert_qmp(result, 'return', {}) 896 897 event = self.vm.get_qmp_event(wait=60.0) 898 while event['event'] == 'JOB_STATUS_CHANGE': 899 self.assert_qmp(event, 'data/id', 'drive0') 900 event = self.vm.get_qmp_event(wait=60.0) 901 902 # Failures will manifest as COMPLETED/ERROR. 903 self.assert_qmp(event, 'event', 'BLOCK_JOB_READY') 904 self.complete_and_wait(drive='drive0', wait_ready=False) 905 self.assert_no_active_block_jobs() 906 907class TestRepairQuorum(iotests.QMPTestCase): 908 """ This class test quorum file repair using drive-mirror. 909 It's mostly a fork of TestSingleDrive """ 910 image_len = 1 * 1024 * 1024 # MB 911 IMAGES = [ quorum_img1, quorum_img2, quorum_img3 ] 912 913 @iotests.skip_if_unsupported(['quorum']) 914 def setUp(self): 915 self.vm = iotests.VM() 916 917 if iotests.qemu_default_machine == 'pc': 918 self.vm.add_drive(None, 'media=cdrom', 'ide') 919 920 # Add each individual quorum images 921 for i in self.IMAGES: 922 qemu_img('create', '-f', iotests.imgfmt, i, 923 str(self.image_len)) 924 # Assign a node name to each quorum image in order to manipulate 925 # them 926 opts = "node-name=img%i" % self.IMAGES.index(i) 927 opts += ',driver=%s' % iotests.imgfmt 928 opts += ',file.driver=file' 929 opts += ',file.filename=%s' % i 930 self.vm = self.vm.add_blockdev(opts) 931 932 self.vm.launch() 933 934 #assemble the quorum block device from the individual files 935 args = { "driver": "quorum", "node-name": "quorum0", 936 "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] } 937 result = self.vm.qmp("blockdev-add", **args) 938 self.assert_qmp(result, 'return', {}) 939 940 941 def tearDown(self): 942 self.vm.shutdown() 943 for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file, 944 nbd_sock_path ]: 945 # Do a try/except because the test may have deleted some images 946 try: 947 os.remove(i) 948 except OSError: 949 pass 950 951 def test_complete(self): 952 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 953 sync='full', node_name="repair0", replaces="img1", 954 target=quorum_repair_img, format=iotests.imgfmt) 955 self.assert_qmp(result, 'return', {}) 956 957 self.complete_and_wait(drive="job0") 958 self.assert_has_block_node("repair0", quorum_repair_img) 959 self.vm.assert_block_path('quorum0', '/children.1', 'repair0') 960 self.vm.shutdown() 961 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 962 'target image does not match source after mirroring') 963 964 def test_cancel(self): 965 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 966 sync='full', node_name="repair0", replaces="img1", 967 target=quorum_repair_img, format=iotests.imgfmt) 968 self.assert_qmp(result, 'return', {}) 969 970 self.cancel_and_wait(drive="job0", force=True) 971 # here we check that the last registered quorum file has not been 972 # swapped out and unref 973 self.assert_has_block_node(None, quorum_img3) 974 975 def test_cancel_after_ready(self): 976 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 977 sync='full', node_name="repair0", replaces="img1", 978 target=quorum_repair_img, format=iotests.imgfmt) 979 self.assert_qmp(result, 'return', {}) 980 981 self.wait_ready_and_cancel(drive="job0") 982 # here we check that the last registered quorum file has not been 983 # swapped out and unref 984 self.assert_has_block_node(None, quorum_img3) 985 self.vm.shutdown() 986 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 987 'target image does not match source after mirroring') 988 989 def test_pause(self): 990 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 991 sync='full', node_name="repair0", replaces="img1", 992 target=quorum_repair_img, format=iotests.imgfmt) 993 self.assert_qmp(result, 'return', {}) 994 995 self.pause_job('job0') 996 997 result = self.vm.qmp('query-block-jobs') 998 offset = self.dictpath(result, 'return[0]/offset') 999 1000 time.sleep(0.5) 1001 result = self.vm.qmp('query-block-jobs') 1002 self.assert_qmp(result, 'return[0]/offset', offset) 1003 1004 result = self.vm.qmp('block-job-resume', device='job0') 1005 self.assert_qmp(result, 'return', {}) 1006 1007 self.complete_and_wait(drive="job0") 1008 self.vm.shutdown() 1009 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 1010 'target image does not match source after mirroring') 1011 1012 def test_medium_not_found(self): 1013 if iotests.qemu_default_machine != 'pc': 1014 return 1015 1016 result = self.vm.qmp('drive-mirror', job_id='job0', device='drive0', # CD-ROM 1017 sync='full', 1018 node_name='repair0', 1019 replaces='img1', 1020 target=quorum_repair_img, format=iotests.imgfmt) 1021 self.assert_qmp(result, 'error/class', 'GenericError') 1022 1023 def test_image_not_found(self): 1024 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1025 sync='full', node_name='repair0', replaces='img1', 1026 mode='existing', target=quorum_repair_img, 1027 format=iotests.imgfmt) 1028 self.assert_qmp(result, 'error/class', 'GenericError') 1029 1030 def test_device_not_found(self): 1031 result = self.vm.qmp('drive-mirror', job_id='job0', 1032 device='nonexistent', sync='full', 1033 node_name='repair0', 1034 replaces='img1', 1035 target=quorum_repair_img, format=iotests.imgfmt) 1036 self.assert_qmp(result, 'error/class', 'GenericError') 1037 1038 def test_wrong_sync_mode(self): 1039 result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0', 1040 node_name='repair0', 1041 replaces='img1', 1042 target=quorum_repair_img, format=iotests.imgfmt) 1043 self.assert_qmp(result, 'error/class', 'GenericError') 1044 1045 def test_no_node_name(self): 1046 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1047 sync='full', replaces='img1', 1048 target=quorum_repair_img, format=iotests.imgfmt) 1049 self.assert_qmp(result, 'error/class', 'GenericError') 1050 1051 def test_nonexistent_replaces(self): 1052 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1053 sync='full', node_name='repair0', replaces='img77', 1054 target=quorum_repair_img, format=iotests.imgfmt) 1055 self.assert_qmp(result, 'error/class', 'GenericError') 1056 1057 def test_after_a_quorum_snapshot(self): 1058 result = self.vm.qmp('blockdev-snapshot-sync', node_name='img1', 1059 snapshot_file=quorum_snapshot_file, 1060 snapshot_node_name="snap1"); 1061 1062 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1063 sync='full', node_name='repair0', replaces="img1", 1064 target=quorum_repair_img, format=iotests.imgfmt) 1065 self.assert_qmp(result, 'error/class', 'GenericError') 1066 1067 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1068 sync='full', node_name='repair0', replaces="snap1", 1069 target=quorum_repair_img, format=iotests.imgfmt) 1070 self.assert_qmp(result, 'return', {}) 1071 1072 self.complete_and_wait('job0') 1073 self.assert_has_block_node("repair0", quorum_repair_img) 1074 self.vm.assert_block_path('quorum0', '/children.1', 'repair0') 1075 1076 def test_with_other_parent(self): 1077 """ 1078 Check that we cannot replace a Quorum child when it has other 1079 parents. 1080 """ 1081 result = self.vm.qmp('nbd-server-start', 1082 addr={ 1083 'type': 'unix', 1084 'data': {'path': nbd_sock_path} 1085 }) 1086 self.assert_qmp(result, 'return', {}) 1087 1088 result = self.vm.qmp('nbd-server-add', device='img1') 1089 self.assert_qmp(result, 'return', {}) 1090 1091 result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', 1092 sync='full', node_name='repair0', replaces='img1', 1093 target=quorum_repair_img, format=iotests.imgfmt) 1094 self.assert_qmp(result, 'error/desc', 1095 "Cannot replace 'img1' by a node mirrored from " 1096 "'quorum0', because it cannot be guaranteed that doing " 1097 "so would not lead to an abrupt change of visible data") 1098 1099 def test_with_other_parents_after_mirror_start(self): 1100 """ 1101 The same as test_with_other_parent(), but add the NBD server 1102 only when the mirror job is already running. 1103 """ 1104 result = self.vm.qmp('nbd-server-start', 1105 addr={ 1106 'type': 'unix', 1107 'data': {'path': nbd_sock_path} 1108 }) 1109 self.assert_qmp(result, 'return', {}) 1110 1111 result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', 1112 sync='full', node_name='repair0', replaces='img1', 1113 target=quorum_repair_img, format=iotests.imgfmt) 1114 self.assert_qmp(result, 'return', {}) 1115 1116 result = self.vm.qmp('nbd-server-add', device='img1') 1117 self.assert_qmp(result, 'return', {}) 1118 1119 # The full error message goes to stderr, we will check it later 1120 self.complete_and_wait('mirror', 1121 completion_error='Operation not permitted') 1122 1123 # Should not have been replaced 1124 self.vm.assert_block_path('quorum0', '/children.1', 'img1') 1125 1126 # Check the full error message now 1127 self.vm.shutdown() 1128 log = self.vm.get_log() 1129 log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log) 1130 log = re.sub(r'^Formatting.*\n', '', log) 1131 log = re.sub(r'\n\[I \+\d+\.\d+\] CLOSED\n?$', '', log) 1132 log = re.sub(r'^%s: ' % os.path.basename(iotests.qemu_prog), '', log) 1133 1134 self.assertEqual(log, 1135 "Can no longer replace 'img1' by 'repair0', because " + 1136 "it can no longer be guaranteed that doing so would " + 1137 "not lead to an abrupt change of visible data") 1138 1139 1140# Test mirroring with a source that does not have any parents (not even a 1141# BlockBackend) 1142class TestOrphanedSource(iotests.QMPTestCase): 1143 def setUp(self): 1144 blk0 = { 'node-name': 'src', 1145 'driver': 'null-co' } 1146 1147 blk1 = { 'node-name': 'dest', 1148 'driver': 'null-co' } 1149 1150 blk2 = { 'node-name': 'dest-ro', 1151 'driver': 'null-co', 1152 'read-only': 'on' } 1153 1154 self.vm = iotests.VM() 1155 self.vm.add_blockdev(self.vm.qmp_to_opts(blk0)) 1156 self.vm.add_blockdev(self.vm.qmp_to_opts(blk1)) 1157 self.vm.add_blockdev(self.vm.qmp_to_opts(blk2)) 1158 self.vm.launch() 1159 1160 def tearDown(self): 1161 self.vm.shutdown() 1162 1163 def test_no_job_id(self): 1164 self.assert_no_active_block_jobs() 1165 1166 result = self.vm.qmp('blockdev-mirror', device='src', sync='full', 1167 target='dest') 1168 self.assert_qmp(result, 'error/class', 'GenericError') 1169 1170 def test_success(self): 1171 self.assert_no_active_block_jobs() 1172 1173 result = self.vm.qmp('blockdev-mirror', job_id='job', device='src', 1174 sync='full', target='dest') 1175 self.assert_qmp(result, 'return', {}) 1176 1177 self.complete_and_wait('job') 1178 1179 def test_failing_permissions(self): 1180 self.assert_no_active_block_jobs() 1181 1182 result = self.vm.qmp('blockdev-mirror', device='src', sync='full', 1183 target='dest-ro') 1184 self.assert_qmp(result, 'error/class', 'GenericError') 1185 1186 def test_failing_permission_in_complete(self): 1187 self.assert_no_active_block_jobs() 1188 1189 # Unshare consistent-read on the target 1190 # (The mirror job does not care) 1191 result = self.vm.qmp('blockdev-add', 1192 driver='blkdebug', 1193 node_name='dest-perm', 1194 image='dest', 1195 unshare_child_perms=['consistent-read']) 1196 self.assert_qmp(result, 'return', {}) 1197 1198 result = self.vm.qmp('blockdev-mirror', job_id='job', device='src', 1199 sync='full', target='dest', 1200 filter_node_name='mirror-filter') 1201 self.assert_qmp(result, 'return', {}) 1202 1203 # Require consistent-read on the source 1204 # (We can only add this node once the job has started, or it 1205 # will complain that it does not want to run on non-root nodes) 1206 result = self.vm.qmp('blockdev-add', 1207 driver='blkdebug', 1208 node_name='src-perm', 1209 image='src', 1210 take_child_perms=['consistent-read']) 1211 self.assert_qmp(result, 'return', {}) 1212 1213 # While completing, mirror will attempt to replace src by 1214 # dest, which must fail because src-perm requires 1215 # consistent-read but dest-perm does not share it; thus 1216 # aborting the job when it is supposed to complete 1217 self.complete_and_wait('job', 1218 completion_error='Operation not permitted') 1219 1220 # Assert that all of our nodes are still there (except for the 1221 # mirror filter, which should be gone despite the failure) 1222 nodes = self.vm.qmp('query-named-block-nodes')['return'] 1223 nodes = [node['node-name'] for node in nodes] 1224 1225 for expect in ('src', 'src-perm', 'dest', 'dest-perm'): 1226 self.assertTrue(expect in nodes, '%s disappeared' % expect) 1227 self.assertFalse('mirror-filter' in nodes, 1228 'Mirror filter node did not disappear') 1229 1230# Test cases for @replaces that do not necessarily involve Quorum 1231class TestReplaces(iotests.QMPTestCase): 1232 # Each of these test cases needs their own block graph, so do not 1233 # create any nodes here 1234 def setUp(self): 1235 self.vm = iotests.VM() 1236 self.vm.launch() 1237 1238 def tearDown(self): 1239 self.vm.shutdown() 1240 for img in (test_img, target_img): 1241 try: 1242 os.remove(img) 1243 except OSError: 1244 pass 1245 1246 @iotests.skip_if_unsupported(['copy-on-read']) 1247 def test_replace_filter(self): 1248 """ 1249 Check that we can replace filter nodes. 1250 """ 1251 result = self.vm.qmp('blockdev-add', **{ 1252 'driver': 'copy-on-read', 1253 'node-name': 'filter0', 1254 'file': { 1255 'driver': 'copy-on-read', 1256 'node-name': 'filter1', 1257 'file': { 1258 'driver': 'null-co' 1259 } 1260 } 1261 }) 1262 self.assert_qmp(result, 'return', {}) 1263 1264 result = self.vm.qmp('blockdev-add', 1265 node_name='target', driver='null-co') 1266 self.assert_qmp(result, 'return', {}) 1267 1268 result = self.vm.qmp('blockdev-mirror', job_id='mirror', device='filter0', 1269 target='target', sync='full', replaces='filter1') 1270 self.assert_qmp(result, 'return', {}) 1271 1272 self.complete_and_wait('mirror') 1273 1274 self.vm.assert_block_path('filter0', '/file', 'target') 1275 1276if __name__ == '__main__': 1277 iotests.main(supported_fmts=['qcow2', 'qed'], 1278 supported_protocols=['file'], 1279 supported_platforms=['linux', 'freebsd', 'netbsd', 'openbsd']) 1280