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 # qed does not support shrinking 281 @iotests.skip_for_formats(('qed')) 282 def test_small_target(self): 283 self.do_test_target_size(self.image_len // 2) 284 285 def test_large_target(self): 286 self.do_test_target_size(self.image_len * 2) 287 288 test_large_cluster = None 289 test_image_not_found = None 290 test_small_buffer2 = None 291 292class TestSingleDriveZeroLength(TestSingleDrive): 293 image_len = 0 294 test_small_buffer2 = None 295 test_large_cluster = None 296 297class TestSingleBlockdevZeroLength(TestSingleBlockdev): 298 image_len = 0 299 test_small_target = None 300 test_large_target = None 301 302class TestSingleDriveUnalignedLength(TestSingleDrive): 303 image_len = 1025 * 1024 304 test_small_buffer2 = None 305 test_large_cluster = None 306 307class TestSingleBlockdevUnalignedLength(TestSingleBlockdev): 308 image_len = 1025 * 1024 309 310class TestMirrorNoBacking(iotests.QMPTestCase): 311 image_len = 2 * 1024 * 1024 # MB 312 313 def setUp(self): 314 iotests.create_image(backing_img, TestMirrorNoBacking.image_len) 315 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 316 self.vm = iotests.VM().add_drive(test_img) 317 self.vm.launch() 318 319 def tearDown(self): 320 self.vm.shutdown() 321 os.remove(test_img) 322 os.remove(backing_img) 323 try: 324 os.remove(target_backing_img) 325 except: 326 pass 327 os.remove(target_img) 328 329 def test_complete(self): 330 self.assert_no_active_block_jobs() 331 332 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img) 333 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 334 mode='existing', target=target_img) 335 self.assert_qmp(result, 'return', {}) 336 337 self.complete_and_wait() 338 result = self.vm.qmp('query-block') 339 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 340 self.vm.shutdown() 341 self.assertTrue(iotests.compare_images(test_img, target_img), 342 'target image does not match source after mirroring') 343 344 def test_cancel(self): 345 self.assert_no_active_block_jobs() 346 347 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, target_img) 348 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 349 mode='existing', target=target_img) 350 self.assert_qmp(result, 'return', {}) 351 352 self.wait_ready_and_cancel() 353 result = self.vm.qmp('query-block') 354 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 355 self.vm.shutdown() 356 self.assertTrue(iotests.compare_images(test_img, target_img), 357 'target image does not match source after mirroring') 358 359 def test_large_cluster(self): 360 self.assert_no_active_block_jobs() 361 362 # qemu-img create fails if the image is not there 363 qemu_img('create', '-f', iotests.imgfmt, '-o', 'size=%d' 364 %(TestMirrorNoBacking.image_len), target_backing_img) 365 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' 366 % (TestMirrorNoBacking.image_len, target_backing_img), target_img) 367 368 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 369 mode='existing', target=target_img) 370 self.assert_qmp(result, 'return', {}) 371 372 self.complete_and_wait() 373 result = self.vm.qmp('query-block') 374 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 375 self.vm.shutdown() 376 self.assertTrue(iotests.compare_images(test_img, target_img), 377 'target image does not match source after mirroring') 378 379class TestMirrorResized(iotests.QMPTestCase): 380 backing_len = 1 * 1024 * 1024 # MB 381 image_len = 2 * 1024 * 1024 # MB 382 383 def setUp(self): 384 iotests.create_image(backing_img, TestMirrorResized.backing_len) 385 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 386 qemu_img('resize', test_img, '2M') 387 self.vm = iotests.VM().add_drive(test_img) 388 self.vm.launch() 389 390 def tearDown(self): 391 self.vm.shutdown() 392 os.remove(test_img) 393 os.remove(backing_img) 394 try: 395 os.remove(target_img) 396 except OSError: 397 pass 398 399 def test_complete_top(self): 400 self.assert_no_active_block_jobs() 401 402 result = self.vm.qmp('drive-mirror', device='drive0', sync='top', 403 target=target_img) 404 self.assert_qmp(result, 'return', {}) 405 406 self.complete_and_wait() 407 result = self.vm.qmp('query-block') 408 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 409 self.vm.shutdown() 410 self.assertTrue(iotests.compare_images(test_img, target_img), 411 'target image does not match source after mirroring') 412 413 def test_complete_full(self): 414 self.assert_no_active_block_jobs() 415 416 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 417 target=target_img) 418 self.assert_qmp(result, 'return', {}) 419 420 self.complete_and_wait() 421 result = self.vm.qmp('query-block') 422 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 423 self.vm.shutdown() 424 self.assertTrue(iotests.compare_images(test_img, target_img), 425 'target image does not match source after mirroring') 426 427class TestReadErrors(iotests.QMPTestCase): 428 image_len = 2 * 1024 * 1024 # MB 429 430 # this should be a multiple of twice the default granularity 431 # so that we hit this offset first in state 1 432 MIRROR_GRANULARITY = 1024 * 1024 433 434 def create_blkdebug_file(self, name, event, errno): 435 file = open(name, 'w') 436 file.write(''' 437[inject-error] 438state = "1" 439event = "%s" 440errno = "%d" 441immediately = "off" 442once = "on" 443sector = "%d" 444 445[set-state] 446state = "1" 447event = "%s" 448new_state = "2" 449 450[set-state] 451state = "2" 452event = "%s" 453new_state = "1" 454''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) 455 file.close() 456 457 def setUp(self): 458 self.blkdebug_file = backing_img + ".blkdebug" 459 iotests.create_image(backing_img, TestReadErrors.image_len) 460 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 461 qemu_img('create', '-f', iotests.imgfmt, 462 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 463 % (self.blkdebug_file, backing_img), 464 test_img) 465 # Write something for tests that use sync='top' 466 qemu_io('-c', 'write %d 512' % (self.MIRROR_GRANULARITY + 65536), 467 test_img) 468 self.vm = iotests.VM().add_drive(test_img) 469 self.vm.launch() 470 471 def tearDown(self): 472 self.vm.shutdown() 473 os.remove(test_img) 474 os.remove(target_img) 475 os.remove(backing_img) 476 os.remove(self.blkdebug_file) 477 478 def test_report_read(self): 479 self.assert_no_active_block_jobs() 480 481 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 482 target=target_img) 483 self.assert_qmp(result, 'return', {}) 484 485 completed = False 486 error = False 487 while not completed: 488 for event in self.vm.get_qmp_events(wait=True): 489 if event['event'] == 'BLOCK_JOB_ERROR': 490 self.assert_qmp(event, 'data/device', 'drive0') 491 self.assert_qmp(event, 'data/operation', 'read') 492 error = True 493 elif event['event'] == 'BLOCK_JOB_READY': 494 self.assertTrue(False, 'job completed unexpectedly') 495 elif event['event'] == 'BLOCK_JOB_COMPLETED': 496 self.assertTrue(error, 'job completed unexpectedly') 497 self.assert_qmp(event, 'data/type', 'mirror') 498 self.assert_qmp(event, 'data/device', 'drive0') 499 self.assert_qmp(event, 'data/error', 'Input/output error') 500 completed = True 501 elif event['event'] == 'JOB_STATUS_CHANGE': 502 self.assert_qmp(event, 'data/id', 'drive0') 503 504 self.assert_no_active_block_jobs() 505 506 def test_ignore_read(self): 507 self.assert_no_active_block_jobs() 508 509 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 510 target=target_img, on_source_error='ignore') 511 self.assert_qmp(result, 'return', {}) 512 513 event = self.vm.get_qmp_event(wait=True) 514 while event['event'] == 'JOB_STATUS_CHANGE': 515 self.assert_qmp(event, 'data/id', 'drive0') 516 event = self.vm.get_qmp_event(wait=True) 517 518 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 519 self.assert_qmp(event, 'data/device', 'drive0') 520 self.assert_qmp(event, 'data/operation', 'read') 521 result = self.vm.qmp('query-block-jobs') 522 self.assert_qmp(result, 'return[0]/paused', False) 523 self.complete_and_wait() 524 525 def test_large_cluster(self): 526 self.assert_no_active_block_jobs() 527 528 # Test COW into the target image. The first half of the 529 # cluster at MIRROR_GRANULARITY has to be copied from 530 # backing_img, even though sync='top'. 531 qemu_img('create', '-f', iotests.imgfmt, '-ocluster_size=131072,backing_file=%s' %(backing_img), target_img) 532 result = self.vm.qmp('drive-mirror', device='drive0', sync='top', 533 on_source_error='ignore', 534 mode='existing', target=target_img) 535 self.assert_qmp(result, 'return', {}) 536 537 event = self.vm.get_qmp_event(wait=True) 538 while event['event'] == 'JOB_STATUS_CHANGE': 539 self.assert_qmp(event, 'data/id', 'drive0') 540 event = self.vm.get_qmp_event(wait=True) 541 542 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 543 self.assert_qmp(event, 'data/device', 'drive0') 544 self.assert_qmp(event, 'data/operation', 'read') 545 result = self.vm.qmp('query-block-jobs') 546 self.assert_qmp(result, 'return[0]/paused', False) 547 self.complete_and_wait() 548 self.vm.shutdown() 549 550 # Detach blkdebug to compare images successfully 551 qemu_img('rebase', '-f', iotests.imgfmt, '-u', '-b', backing_img, test_img) 552 self.assertTrue(iotests.compare_images(test_img, target_img), 553 'target image does not match source after mirroring') 554 555 def test_stop_read(self): 556 self.assert_no_active_block_jobs() 557 558 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 559 target=target_img, on_source_error='stop') 560 self.assert_qmp(result, 'return', {}) 561 562 error = False 563 ready = False 564 while not ready: 565 for event in self.vm.get_qmp_events(wait=True): 566 if event['event'] == 'BLOCK_JOB_ERROR': 567 self.assert_qmp(event, 'data/device', 'drive0') 568 self.assert_qmp(event, 'data/operation', 'read') 569 570 result = self.vm.qmp('query-block-jobs') 571 self.assert_qmp(result, 'return[0]/paused', True) 572 self.assert_qmp(result, 'return[0]/io-status', 'failed') 573 574 result = self.vm.qmp('block-job-resume', device='drive0') 575 self.assert_qmp(result, 'return', {}) 576 error = True 577 elif event['event'] == 'BLOCK_JOB_READY': 578 self.assertTrue(error, 'job completed unexpectedly') 579 self.assert_qmp(event, 'data/device', 'drive0') 580 ready = True 581 582 result = self.vm.qmp('query-block-jobs') 583 self.assert_qmp(result, 'return[0]/paused', False) 584 self.assert_qmp(result, 'return[0]/io-status', 'ok') 585 586 self.complete_and_wait(wait_ready=False) 587 self.assert_no_active_block_jobs() 588 589class TestWriteErrors(iotests.QMPTestCase): 590 image_len = 2 * 1024 * 1024 # MB 591 592 # this should be a multiple of twice the default granularity 593 # so that we hit this offset first in state 1 594 MIRROR_GRANULARITY = 1024 * 1024 595 596 def create_blkdebug_file(self, name, event, errno): 597 file = open(name, 'w') 598 file.write(''' 599[inject-error] 600state = "1" 601event = "%s" 602errno = "%d" 603immediately = "off" 604once = "on" 605sector = "%d" 606 607[set-state] 608state = "1" 609event = "%s" 610new_state = "2" 611 612[set-state] 613state = "2" 614event = "%s" 615new_state = "1" 616''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) 617 file.close() 618 619 def setUp(self): 620 self.blkdebug_file = target_img + ".blkdebug" 621 iotests.create_image(backing_img, TestWriteErrors.image_len) 622 self.create_blkdebug_file(self.blkdebug_file, "write_aio", 5) 623 qemu_img('create', '-f', iotests.imgfmt, '-obacking_file=%s' %(backing_img), test_img) 624 self.vm = iotests.VM().add_drive(test_img) 625 self.target_img = 'blkdebug:%s:%s' % (self.blkdebug_file, target_img) 626 qemu_img('create', '-f', iotests.imgfmt, '-osize=%d' %(TestWriteErrors.image_len), target_img) 627 self.vm.launch() 628 629 def tearDown(self): 630 self.vm.shutdown() 631 os.remove(test_img) 632 os.remove(target_img) 633 os.remove(backing_img) 634 os.remove(self.blkdebug_file) 635 636 def test_report_write(self): 637 self.assert_no_active_block_jobs() 638 639 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 640 mode='existing', target=self.target_img) 641 self.assert_qmp(result, 'return', {}) 642 643 completed = False 644 error = False 645 while not completed: 646 for event in self.vm.get_qmp_events(wait=True): 647 if event['event'] == 'BLOCK_JOB_ERROR': 648 self.assert_qmp(event, 'data/device', 'drive0') 649 self.assert_qmp(event, 'data/operation', 'write') 650 error = True 651 elif event['event'] == 'BLOCK_JOB_READY': 652 self.assertTrue(False, 'job completed unexpectedly') 653 elif event['event'] == 'BLOCK_JOB_COMPLETED': 654 self.assertTrue(error, 'job completed unexpectedly') 655 self.assert_qmp(event, 'data/type', 'mirror') 656 self.assert_qmp(event, 'data/device', 'drive0') 657 self.assert_qmp(event, 'data/error', 'Input/output error') 658 completed = True 659 660 self.assert_no_active_block_jobs() 661 662 def test_ignore_write(self): 663 self.assert_no_active_block_jobs() 664 665 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 666 mode='existing', target=self.target_img, 667 on_target_error='ignore') 668 self.assert_qmp(result, 'return', {}) 669 670 event = self.vm.event_wait(name='BLOCK_JOB_ERROR') 671 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 672 self.assert_qmp(event, 'data/device', 'drive0') 673 self.assert_qmp(event, 'data/operation', 'write') 674 result = self.vm.qmp('query-block-jobs') 675 self.assert_qmp(result, 'return[0]/paused', False) 676 self.complete_and_wait() 677 678 def test_stop_write(self): 679 self.assert_no_active_block_jobs() 680 681 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 682 mode='existing', target=self.target_img, 683 on_target_error='stop') 684 self.assert_qmp(result, 'return', {}) 685 686 error = False 687 ready = False 688 while not ready: 689 for event in self.vm.get_qmp_events(wait=True): 690 if event['event'] == 'BLOCK_JOB_ERROR': 691 self.assert_qmp(event, 'data/device', 'drive0') 692 self.assert_qmp(event, 'data/operation', 'write') 693 694 result = self.vm.qmp('query-block-jobs') 695 self.assert_qmp(result, 'return[0]/paused', True) 696 self.assert_qmp(result, 'return[0]/io-status', 'failed') 697 698 result = self.vm.qmp('block-job-resume', device='drive0') 699 self.assert_qmp(result, 'return', {}) 700 701 result = self.vm.qmp('query-block-jobs') 702 self.assert_qmp(result, 'return[0]/paused', False) 703 self.assert_qmp(result, 'return[0]/io-status', 'ok') 704 error = True 705 elif event['event'] == 'BLOCK_JOB_READY': 706 self.assertTrue(error, 'job completed unexpectedly') 707 self.assert_qmp(event, 'data/device', 'drive0') 708 ready = True 709 710 self.complete_and_wait(wait_ready=False) 711 self.assert_no_active_block_jobs() 712 713class TestSetSpeed(iotests.QMPTestCase): 714 image_len = 80 * 1024 * 1024 # MB 715 716 def setUp(self): 717 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 718 qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img) 719 self.vm = iotests.VM().add_drive(test_img) 720 self.vm.launch() 721 722 def tearDown(self): 723 self.vm.shutdown() 724 os.remove(test_img) 725 os.remove(backing_img) 726 os.remove(target_img) 727 728 def test_set_speed(self): 729 self.assert_no_active_block_jobs() 730 731 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 732 target=target_img) 733 self.assert_qmp(result, 'return', {}) 734 735 # Default speed is 0 736 result = self.vm.qmp('query-block-jobs') 737 self.assert_qmp(result, 'return[0]/device', 'drive0') 738 self.assert_qmp(result, 'return[0]/speed', 0) 739 740 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 741 self.assert_qmp(result, 'return', {}) 742 743 # Ensure the speed we set was accepted 744 result = self.vm.qmp('query-block-jobs') 745 self.assert_qmp(result, 'return[0]/device', 'drive0') 746 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 747 748 self.wait_ready_and_cancel() 749 750 # Check setting speed in drive-mirror works 751 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 752 target=target_img, speed=4*1024*1024) 753 self.assert_qmp(result, 'return', {}) 754 755 result = self.vm.qmp('query-block-jobs') 756 self.assert_qmp(result, 'return[0]/device', 'drive0') 757 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 758 759 self.wait_ready_and_cancel() 760 761 def test_set_speed_invalid(self): 762 self.assert_no_active_block_jobs() 763 764 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 765 target=target_img, speed=-1) 766 self.assert_qmp(result, 'error/class', 'GenericError') 767 768 self.assert_no_active_block_jobs() 769 770 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 771 target=target_img) 772 self.assert_qmp(result, 'return', {}) 773 774 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 775 self.assert_qmp(result, 'error/class', 'GenericError') 776 777 self.wait_ready_and_cancel() 778 779class TestUnbackedSource(iotests.QMPTestCase): 780 image_len = 2 * 1024 * 1024 # MB 781 782 def setUp(self): 783 qemu_img('create', '-f', iotests.imgfmt, test_img, 784 str(TestUnbackedSource.image_len)) 785 self.vm = iotests.VM() 786 self.vm.launch() 787 result = self.vm.qmp('blockdev-add', node_name='drive0', 788 driver=iotests.imgfmt, 789 file={ 790 'driver': 'file', 791 'filename': test_img, 792 }) 793 self.assert_qmp(result, 'return', {}) 794 795 def tearDown(self): 796 self.vm.shutdown() 797 os.remove(test_img) 798 os.remove(target_img) 799 800 def test_absolute_paths_full(self): 801 self.assert_no_active_block_jobs() 802 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 803 sync='full', target=target_img, 804 mode='absolute-paths') 805 self.assert_qmp(result, 'return', {}) 806 self.complete_and_wait() 807 self.assert_no_active_block_jobs() 808 809 def test_absolute_paths_top(self): 810 self.assert_no_active_block_jobs() 811 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 812 sync='top', target=target_img, 813 mode='absolute-paths') 814 self.assert_qmp(result, 'return', {}) 815 self.complete_and_wait() 816 self.assert_no_active_block_jobs() 817 818 def test_absolute_paths_none(self): 819 self.assert_no_active_block_jobs() 820 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 821 sync='none', target=target_img, 822 mode='absolute-paths') 823 self.assert_qmp(result, 'return', {}) 824 self.complete_and_wait() 825 self.assert_no_active_block_jobs() 826 827 def test_existing_full(self): 828 qemu_img('create', '-f', iotests.imgfmt, target_img, 829 str(self.image_len)) 830 qemu_io('-c', 'write -P 42 0 64k', target_img) 831 832 self.assert_no_active_block_jobs() 833 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 834 sync='full', target=target_img, mode='existing') 835 self.assert_qmp(result, 'return', {}) 836 self.complete_and_wait() 837 self.assert_no_active_block_jobs() 838 839 result = self.vm.qmp('blockdev-del', node_name='drive0') 840 self.assert_qmp(result, 'return', {}) 841 842 self.assertTrue(iotests.compare_images(test_img, target_img), 843 'target image does not match source after mirroring') 844 845 def test_blockdev_full(self): 846 qemu_img('create', '-f', iotests.imgfmt, target_img, 847 str(self.image_len)) 848 qemu_io('-c', 'write -P 42 0 64k', target_img) 849 850 result = self.vm.qmp('blockdev-add', node_name='target', 851 driver=iotests.imgfmt, 852 file={ 853 'driver': 'file', 854 'filename': target_img, 855 }) 856 self.assert_qmp(result, 'return', {}) 857 858 self.assert_no_active_block_jobs() 859 result = self.vm.qmp('blockdev-mirror', job_id='drive0', device='drive0', 860 sync='full', target='target') 861 self.assert_qmp(result, 'return', {}) 862 self.complete_and_wait() 863 self.assert_no_active_block_jobs() 864 865 result = self.vm.qmp('blockdev-del', node_name='drive0') 866 self.assert_qmp(result, 'return', {}) 867 868 result = self.vm.qmp('blockdev-del', node_name='target') 869 self.assert_qmp(result, 'return', {}) 870 871 self.assertTrue(iotests.compare_images(test_img, target_img), 872 'target image does not match source after mirroring') 873 874class TestGranularity(iotests.QMPTestCase): 875 image_len = 10 * 1024 * 1024 # MB 876 877 def setUp(self): 878 qemu_img('create', '-f', iotests.imgfmt, test_img, 879 str(TestGranularity.image_len)) 880 qemu_io('-c', 'write 0 %d' % (self.image_len), 881 test_img) 882 self.vm = iotests.VM().add_drive(test_img) 883 self.vm.launch() 884 885 def tearDown(self): 886 self.vm.shutdown() 887 self.assertTrue(iotests.compare_images(test_img, target_img), 888 'target image does not match source after mirroring') 889 os.remove(test_img) 890 os.remove(target_img) 891 892 def test_granularity(self): 893 self.assert_no_active_block_jobs() 894 result = self.vm.qmp('drive-mirror', device='drive0', 895 sync='full', target=target_img, 896 mode='absolute-paths', granularity=8192) 897 self.assert_qmp(result, 'return', {}) 898 899 event = self.vm.get_qmp_event(wait=60.0) 900 while event['event'] == 'JOB_STATUS_CHANGE': 901 self.assert_qmp(event, 'data/id', 'drive0') 902 event = self.vm.get_qmp_event(wait=60.0) 903 904 # Failures will manifest as COMPLETED/ERROR. 905 self.assert_qmp(event, 'event', 'BLOCK_JOB_READY') 906 self.complete_and_wait(drive='drive0', wait_ready=False) 907 self.assert_no_active_block_jobs() 908 909class TestRepairQuorum(iotests.QMPTestCase): 910 """ This class test quorum file repair using drive-mirror. 911 It's mostly a fork of TestSingleDrive """ 912 image_len = 1 * 1024 * 1024 # MB 913 IMAGES = [ quorum_img1, quorum_img2, quorum_img3 ] 914 915 @iotests.skip_if_unsupported(['quorum']) 916 def setUp(self): 917 self.vm = iotests.VM() 918 919 if iotests.qemu_default_machine == 'pc': 920 self.vm.add_drive(None, 'media=cdrom', 'ide') 921 922 # Add each individual quorum images 923 for i in self.IMAGES: 924 qemu_img('create', '-f', iotests.imgfmt, i, 925 str(self.image_len)) 926 # Assign a node name to each quorum image in order to manipulate 927 # them 928 opts = "node-name=img%i" % self.IMAGES.index(i) 929 opts += ',driver=%s' % iotests.imgfmt 930 opts += ',file.driver=file' 931 opts += ',file.filename=%s' % i 932 self.vm = self.vm.add_blockdev(opts) 933 934 self.vm.launch() 935 936 #assemble the quorum block device from the individual files 937 args = { "driver": "quorum", "node-name": "quorum0", 938 "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] } 939 result = self.vm.qmp("blockdev-add", **args) 940 self.assert_qmp(result, 'return', {}) 941 942 943 def tearDown(self): 944 self.vm.shutdown() 945 for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file, 946 nbd_sock_path ]: 947 # Do a try/except because the test may have deleted some images 948 try: 949 os.remove(i) 950 except OSError: 951 pass 952 953 def test_complete(self): 954 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 955 sync='full', node_name="repair0", replaces="img1", 956 target=quorum_repair_img, format=iotests.imgfmt) 957 self.assert_qmp(result, 'return', {}) 958 959 self.complete_and_wait(drive="job0") 960 self.assert_has_block_node("repair0", quorum_repair_img) 961 self.vm.assert_block_path('quorum0', '/children.1', 'repair0') 962 self.vm.shutdown() 963 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 964 'target image does not match source after mirroring') 965 966 def test_cancel(self): 967 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 968 sync='full', node_name="repair0", replaces="img1", 969 target=quorum_repair_img, format=iotests.imgfmt) 970 self.assert_qmp(result, 'return', {}) 971 972 self.cancel_and_wait(drive="job0", force=True) 973 # here we check that the last registered quorum file has not been 974 # swapped out and unref 975 self.assert_has_block_node(None, quorum_img3) 976 977 def test_cancel_after_ready(self): 978 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 979 sync='full', node_name="repair0", replaces="img1", 980 target=quorum_repair_img, format=iotests.imgfmt) 981 self.assert_qmp(result, 'return', {}) 982 983 self.wait_ready_and_cancel(drive="job0") 984 # here we check that the last registered quorum file has not been 985 # swapped out and unref 986 self.assert_has_block_node(None, quorum_img3) 987 self.vm.shutdown() 988 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 989 'target image does not match source after mirroring') 990 991 def test_pause(self): 992 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 993 sync='full', node_name="repair0", replaces="img1", 994 target=quorum_repair_img, format=iotests.imgfmt) 995 self.assert_qmp(result, 'return', {}) 996 997 self.pause_job('job0') 998 999 result = self.vm.qmp('query-block-jobs') 1000 offset = self.dictpath(result, 'return[0]/offset') 1001 1002 time.sleep(0.5) 1003 result = self.vm.qmp('query-block-jobs') 1004 self.assert_qmp(result, 'return[0]/offset', offset) 1005 1006 result = self.vm.qmp('block-job-resume', device='job0') 1007 self.assert_qmp(result, 'return', {}) 1008 1009 self.complete_and_wait(drive="job0") 1010 self.vm.shutdown() 1011 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 1012 'target image does not match source after mirroring') 1013 1014 def test_medium_not_found(self): 1015 if iotests.qemu_default_machine != 'pc': 1016 return 1017 1018 result = self.vm.qmp('drive-mirror', job_id='job0', device='drive0', # CD-ROM 1019 sync='full', 1020 node_name='repair0', 1021 replaces='img1', 1022 target=quorum_repair_img, format=iotests.imgfmt) 1023 self.assert_qmp(result, 'error/class', 'GenericError') 1024 1025 def test_image_not_found(self): 1026 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1027 sync='full', node_name='repair0', replaces='img1', 1028 mode='existing', target=quorum_repair_img, 1029 format=iotests.imgfmt) 1030 self.assert_qmp(result, 'error/class', 'GenericError') 1031 1032 def test_device_not_found(self): 1033 result = self.vm.qmp('drive-mirror', job_id='job0', 1034 device='nonexistent', sync='full', 1035 node_name='repair0', 1036 replaces='img1', 1037 target=quorum_repair_img, format=iotests.imgfmt) 1038 self.assert_qmp(result, 'error/class', 'GenericError') 1039 1040 def test_wrong_sync_mode(self): 1041 result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0', 1042 node_name='repair0', 1043 replaces='img1', 1044 target=quorum_repair_img, format=iotests.imgfmt) 1045 self.assert_qmp(result, 'error/class', 'GenericError') 1046 1047 def test_no_node_name(self): 1048 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1049 sync='full', replaces='img1', 1050 target=quorum_repair_img, format=iotests.imgfmt) 1051 self.assert_qmp(result, 'error/class', 'GenericError') 1052 1053 def test_nonexistent_replaces(self): 1054 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1055 sync='full', node_name='repair0', replaces='img77', 1056 target=quorum_repair_img, format=iotests.imgfmt) 1057 self.assert_qmp(result, 'error/class', 'GenericError') 1058 1059 def test_after_a_quorum_snapshot(self): 1060 result = self.vm.qmp('blockdev-snapshot-sync', node_name='img1', 1061 snapshot_file=quorum_snapshot_file, 1062 snapshot_node_name="snap1"); 1063 1064 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1065 sync='full', node_name='repair0', replaces="img1", 1066 target=quorum_repair_img, format=iotests.imgfmt) 1067 self.assert_qmp(result, 'error/class', 'GenericError') 1068 1069 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1070 sync='full', node_name='repair0', replaces="snap1", 1071 target=quorum_repair_img, format=iotests.imgfmt) 1072 self.assert_qmp(result, 'return', {}) 1073 1074 self.complete_and_wait('job0') 1075 self.assert_has_block_node("repair0", quorum_repair_img) 1076 self.vm.assert_block_path('quorum0', '/children.1', 'repair0') 1077 1078 def test_with_other_parent(self): 1079 """ 1080 Check that we cannot replace a Quorum child when it has other 1081 parents. 1082 """ 1083 result = self.vm.qmp('nbd-server-start', 1084 addr={ 1085 'type': 'unix', 1086 'data': {'path': nbd_sock_path} 1087 }) 1088 self.assert_qmp(result, 'return', {}) 1089 1090 result = self.vm.qmp('nbd-server-add', device='img1') 1091 self.assert_qmp(result, 'return', {}) 1092 1093 result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', 1094 sync='full', node_name='repair0', replaces='img1', 1095 target=quorum_repair_img, format=iotests.imgfmt) 1096 self.assert_qmp(result, 'error/desc', 1097 "Cannot replace 'img1' by a node mirrored from " 1098 "'quorum0', because it cannot be guaranteed that doing " 1099 "so would not lead to an abrupt change of visible data") 1100 1101 def test_with_other_parents_after_mirror_start(self): 1102 """ 1103 The same as test_with_other_parent(), but add the NBD server 1104 only when the mirror job is already running. 1105 """ 1106 result = self.vm.qmp('nbd-server-start', 1107 addr={ 1108 'type': 'unix', 1109 'data': {'path': nbd_sock_path} 1110 }) 1111 self.assert_qmp(result, 'return', {}) 1112 1113 result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', 1114 sync='full', node_name='repair0', replaces='img1', 1115 target=quorum_repair_img, format=iotests.imgfmt) 1116 self.assert_qmp(result, 'return', {}) 1117 1118 result = self.vm.qmp('nbd-server-add', device='img1') 1119 self.assert_qmp(result, 'return', {}) 1120 1121 # The full error message goes to stderr, we will check it later 1122 self.complete_and_wait('mirror', 1123 completion_error='Operation not permitted') 1124 1125 # Should not have been replaced 1126 self.vm.assert_block_path('quorum0', '/children.1', 'img1') 1127 1128 # Check the full error message now 1129 self.vm.shutdown() 1130 log = self.vm.get_log() 1131 log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log) 1132 log = re.sub(r'^Formatting.*\n', '', log) 1133 log = re.sub(r'\n\[I \+\d+\.\d+\] CLOSED\n?$', '', log) 1134 log = re.sub(r'^%s: ' % os.path.basename(iotests.qemu_prog), '', log) 1135 1136 self.assertEqual(log, 1137 "Can no longer replace 'img1' by 'repair0', because " + 1138 "it can no longer be guaranteed that doing so would " + 1139 "not lead to an abrupt change of visible data") 1140 1141 1142# Test mirroring with a source that does not have any parents (not even a 1143# BlockBackend) 1144class TestOrphanedSource(iotests.QMPTestCase): 1145 def setUp(self): 1146 blk0 = { 'node-name': 'src', 1147 'driver': 'null-co' } 1148 1149 blk1 = { 'node-name': 'dest', 1150 'driver': 'null-co' } 1151 1152 blk2 = { 'node-name': 'dest-ro', 1153 'driver': 'null-co', 1154 'read-only': 'on' } 1155 1156 self.vm = iotests.VM() 1157 self.vm.add_blockdev(self.vm.qmp_to_opts(blk0)) 1158 self.vm.add_blockdev(self.vm.qmp_to_opts(blk1)) 1159 self.vm.add_blockdev(self.vm.qmp_to_opts(blk2)) 1160 self.vm.launch() 1161 1162 def tearDown(self): 1163 self.vm.shutdown() 1164 1165 def test_no_job_id(self): 1166 self.assert_no_active_block_jobs() 1167 1168 result = self.vm.qmp('blockdev-mirror', device='src', sync='full', 1169 target='dest') 1170 self.assert_qmp(result, 'error/class', 'GenericError') 1171 1172 def test_success(self): 1173 self.assert_no_active_block_jobs() 1174 1175 result = self.vm.qmp('blockdev-mirror', job_id='job', device='src', 1176 sync='full', target='dest') 1177 self.assert_qmp(result, 'return', {}) 1178 1179 self.complete_and_wait('job') 1180 1181 def test_failing_permissions(self): 1182 self.assert_no_active_block_jobs() 1183 1184 result = self.vm.qmp('blockdev-mirror', device='src', sync='full', 1185 target='dest-ro') 1186 self.assert_qmp(result, 'error/class', 'GenericError') 1187 1188 def test_failing_permission_in_complete(self): 1189 self.assert_no_active_block_jobs() 1190 1191 # Unshare consistent-read on the target 1192 # (The mirror job does not care) 1193 result = self.vm.qmp('blockdev-add', 1194 driver='blkdebug', 1195 node_name='dest-perm', 1196 image='dest', 1197 unshare_child_perms=['consistent-read']) 1198 self.assert_qmp(result, 'return', {}) 1199 1200 result = self.vm.qmp('blockdev-mirror', job_id='job', device='src', 1201 sync='full', target='dest', 1202 filter_node_name='mirror-filter') 1203 self.assert_qmp(result, 'return', {}) 1204 1205 # Require consistent-read on the source 1206 # (We can only add this node once the job has started, or it 1207 # will complain that it does not want to run on non-root nodes) 1208 result = self.vm.qmp('blockdev-add', 1209 driver='blkdebug', 1210 node_name='src-perm', 1211 image='src', 1212 take_child_perms=['consistent-read']) 1213 self.assert_qmp(result, 'return', {}) 1214 1215 # While completing, mirror will attempt to replace src by 1216 # dest, which must fail because src-perm requires 1217 # consistent-read but dest-perm does not share it; thus 1218 # aborting the job when it is supposed to complete 1219 self.complete_and_wait('job', 1220 completion_error='Operation not permitted') 1221 1222 # Assert that all of our nodes are still there (except for the 1223 # mirror filter, which should be gone despite the failure) 1224 nodes = self.vm.qmp('query-named-block-nodes')['return'] 1225 nodes = [node['node-name'] for node in nodes] 1226 1227 for expect in ('src', 'src-perm', 'dest', 'dest-perm'): 1228 self.assertTrue(expect in nodes, '%s disappeared' % expect) 1229 self.assertFalse('mirror-filter' in nodes, 1230 'Mirror filter node did not disappear') 1231 1232# Test cases for @replaces that do not necessarily involve Quorum 1233class TestReplaces(iotests.QMPTestCase): 1234 # Each of these test cases needs their own block graph, so do not 1235 # create any nodes here 1236 def setUp(self): 1237 self.vm = iotests.VM() 1238 self.vm.launch() 1239 1240 def tearDown(self): 1241 self.vm.shutdown() 1242 for img in (test_img, target_img): 1243 try: 1244 os.remove(img) 1245 except OSError: 1246 pass 1247 1248 @iotests.skip_if_unsupported(['copy-on-read']) 1249 def test_replace_filter(self): 1250 """ 1251 Check that we can replace filter nodes. 1252 """ 1253 result = self.vm.qmp('blockdev-add', **{ 1254 'driver': 'copy-on-read', 1255 'node-name': 'filter0', 1256 'file': { 1257 'driver': 'copy-on-read', 1258 'node-name': 'filter1', 1259 'file': { 1260 'driver': 'null-co' 1261 } 1262 } 1263 }) 1264 self.assert_qmp(result, 'return', {}) 1265 1266 result = self.vm.qmp('blockdev-add', 1267 node_name='target', driver='null-co') 1268 self.assert_qmp(result, 'return', {}) 1269 1270 result = self.vm.qmp('blockdev-mirror', job_id='mirror', device='filter0', 1271 target='target', sync='full', replaces='filter1') 1272 self.assert_qmp(result, 'return', {}) 1273 1274 self.complete_and_wait('mirror') 1275 1276 self.vm.assert_block_path('filter0', '/file', 'target') 1277 1278if __name__ == '__main__': 1279 iotests.main(supported_fmts=['qcow2', 'qed'], 1280 supported_protocols=['file'], 1281 supported_platforms=['linux', 'freebsd', 'netbsd', 'openbsd']) 1282