1#!/usr/bin/env python3 2# group: rw auto backing 3# 4# Tests for image mirroring. 5# 6# Copyright (C) 2012 Red Hat, Inc. 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 re 25import json 26import iotests 27from iotests import qemu_img, qemu_img_map, qemu_io 28 29backing_img = os.path.join(iotests.test_dir, 'backing.img') 30target_backing_img = os.path.join(iotests.test_dir, 'target-backing.img') 31test_img = os.path.join(iotests.test_dir, 'test.img') 32target_img = os.path.join(iotests.test_dir, 'target.img') 33 34quorum_img1 = os.path.join(iotests.test_dir, 'quorum1.img') 35quorum_img2 = os.path.join(iotests.test_dir, 'quorum2.img') 36quorum_img3 = os.path.join(iotests.test_dir, 'quorum3.img') 37quorum_repair_img = os.path.join(iotests.test_dir, 'quorum_repair.img') 38quorum_snapshot_file = os.path.join(iotests.test_dir, 'quorum_snapshot.img') 39 40nbd_sock_path = os.path.join(iotests.sock_dir, 'nbd.sock') 41 42class TestSingleDrive(iotests.QMPTestCase): 43 image_len = 1 * 1024 * 1024 # MB 44 qmp_cmd = 'drive-mirror' 45 qmp_target = target_img 46 47 def setUp(self): 48 iotests.create_image(backing_img, self.image_len) 49 qemu_img('create', '-f', iotests.imgfmt, 50 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) 51 self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=base") 52 if iotests.qemu_default_machine == 'pc': 53 self.vm.add_drive(None, 'media=cdrom', 'ide') 54 self.vm.launch() 55 56 def tearDown(self): 57 self.vm.shutdown() 58 os.remove(test_img) 59 os.remove(backing_img) 60 try: 61 os.remove(target_img) 62 except OSError: 63 pass 64 65 def test_complete(self): 66 self.assert_no_active_block_jobs() 67 68 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 69 target=self.qmp_target) 70 self.assert_qmp(result, 'return', {}) 71 72 self.complete_and_wait() 73 result = self.vm.qmp('query-block') 74 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 75 self.vm.shutdown() 76 self.assertTrue(iotests.compare_images(test_img, target_img), 77 'target image does not match source after mirroring') 78 79 def test_cancel(self): 80 self.assert_no_active_block_jobs() 81 82 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 83 target=self.qmp_target) 84 self.assert_qmp(result, 'return', {}) 85 86 self.cancel_and_wait(force=True) 87 result = self.vm.qmp('query-block') 88 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 89 90 def test_cancel_after_ready(self): 91 self.assert_no_active_block_jobs() 92 93 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 94 target=self.qmp_target) 95 self.assert_qmp(result, 'return', {}) 96 97 self.wait_ready_and_cancel() 98 result = self.vm.qmp('query-block') 99 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 100 self.vm.shutdown() 101 self.assertTrue(iotests.compare_images(test_img, target_img), 102 'target image does not match source after mirroring') 103 104 def test_pause(self): 105 self.assert_no_active_block_jobs() 106 107 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 108 target=self.qmp_target) 109 self.assert_qmp(result, 'return', {}) 110 111 self.pause_job('drive0') 112 113 result = self.vm.qmp('query-block-jobs') 114 offset = self.dictpath(result, 'return[0]/offset') 115 116 time.sleep(0.5) 117 result = self.vm.qmp('query-block-jobs') 118 self.assert_qmp(result, 'return[0]/offset', offset) 119 120 result = self.vm.qmp('block-job-resume', device='drive0') 121 self.assert_qmp(result, 'return', {}) 122 123 self.complete_and_wait() 124 self.vm.shutdown() 125 self.assertTrue(iotests.compare_images(test_img, target_img), 126 'target image does not match source after mirroring') 127 128 def test_small_buffer(self): 129 self.assert_no_active_block_jobs() 130 131 # A small buffer is rounded up automatically 132 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 133 buf_size=4096, target=self.qmp_target) 134 self.assert_qmp(result, 'return', {}) 135 136 self.complete_and_wait() 137 result = self.vm.qmp('query-block') 138 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 139 self.vm.shutdown() 140 self.assertTrue(iotests.compare_images(test_img, target_img), 141 'target image does not match source after mirroring') 142 143 def test_small_buffer2(self): 144 self.assert_no_active_block_jobs() 145 146 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,size=%d' 147 % (self.image_len, self.image_len), target_img) 148 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 149 buf_size=65536, mode='existing', target=self.qmp_target) 150 self.assert_qmp(result, 'return', {}) 151 152 self.complete_and_wait() 153 result = self.vm.qmp('query-block') 154 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 155 self.vm.shutdown() 156 self.assertTrue(iotests.compare_images(test_img, target_img), 157 'target image does not match source after mirroring') 158 159 def test_large_cluster(self): 160 self.assert_no_active_block_jobs() 161 162 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' 163 % (self.image_len, backing_img), 164 '-F', 'raw', target_img) 165 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 166 mode='existing', target=self.qmp_target) 167 self.assert_qmp(result, 'return', {}) 168 169 self.complete_and_wait() 170 result = self.vm.qmp('query-block') 171 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 172 self.vm.shutdown() 173 self.assertTrue(iotests.compare_images(test_img, target_img), 174 'target image does not match source after mirroring') 175 176 # Tests that the insertion of the mirror_top filter node doesn't make a 177 # difference to query-block 178 def test_implicit_node(self): 179 self.assert_no_active_block_jobs() 180 181 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 182 target=self.qmp_target) 183 self.assert_qmp(result, 'return', {}) 184 185 result = self.vm.qmp('query-block') 186 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 187 self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) 188 self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img) 189 self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) 190 self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) 191 self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img) 192 193 result = self.vm.qmp('query-blockstats') 194 self.assert_qmp(result, 'return[0]/node-name', 'top') 195 self.assert_qmp(result, 'return[0]/backing/node-name', 'base') 196 197 self.cancel_and_wait(force=True) 198 result = self.vm.qmp('query-block') 199 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 200 self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) 201 self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img) 202 self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) 203 self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) 204 self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img) 205 206 result = self.vm.qmp('query-blockstats') 207 self.assert_qmp(result, 'return[0]/node-name', 'top') 208 self.assert_qmp(result, 'return[0]/backing/node-name', 'base') 209 210 def test_medium_not_found(self): 211 if iotests.qemu_default_machine != 'pc': 212 return 213 214 result = self.vm.qmp(self.qmp_cmd, device='ide1-cd0', sync='full', 215 target=self.qmp_target) 216 self.assert_qmp(result, 'error/class', 'GenericError') 217 218 def test_image_not_found(self): 219 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 220 mode='existing', target=self.qmp_target) 221 self.assert_qmp(result, 'error/class', 'GenericError') 222 223 def test_device_not_found(self): 224 result = self.vm.qmp(self.qmp_cmd, device='nonexistent', sync='full', 225 target=self.qmp_target) 226 self.assert_qmp(result, 'error/class', 'GenericError') 227 228class TestSingleBlockdev(TestSingleDrive): 229 qmp_cmd = 'blockdev-mirror' 230 qmp_target = 'node1' 231 232 def setUp(self): 233 TestSingleDrive.setUp(self) 234 qemu_img('create', '-f', iotests.imgfmt, 235 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) 236 args = {'driver': iotests.imgfmt, 237 'node-name': self.qmp_target, 238 'file': { 'filename': target_img, 'driver': 'file' } } 239 result = self.vm.qmp("blockdev-add", **args) 240 self.assert_qmp(result, 'return', {}) 241 242 def test_mirror_to_self(self): 243 result = self.vm.qmp(self.qmp_cmd, job_id='job0', 244 device=self.qmp_target, sync='full', 245 target=self.qmp_target) 246 self.assert_qmp(result, 'error/class', 'GenericError') 247 248 def do_test_resize(self, device, node): 249 def pre_finalize(): 250 if device: 251 result = self.vm.qmp('block_resize', device=device, size=65536) 252 self.assert_qmp(result, 'error/class', 'GenericError') 253 254 result = self.vm.qmp('block_resize', node_name=node, size=65536) 255 self.assert_qmp(result, 'error/class', 'GenericError') 256 257 result = self.vm.qmp(self.qmp_cmd, job_id='job0', device='drive0', 258 sync='full', target=self.qmp_target, 259 auto_finalize=False, auto_dismiss=False) 260 self.assert_qmp(result, 'return', {}) 261 262 result = self.vm.run_job('job0', auto_finalize=False, 263 pre_finalize=pre_finalize) 264 self.assertEqual(result, None) 265 266 def test_source_resize(self): 267 self.do_test_resize('drive0', 'top') 268 269 def test_target_resize(self): 270 self.do_test_resize(None, self.qmp_target) 271 272 def do_test_target_size(self, size): 273 result = self.vm.qmp('block_resize', node_name=self.qmp_target, 274 size=size) 275 self.assert_qmp(result, 'return', {}) 276 277 result = self.vm.qmp(self.qmp_cmd, job_id='job0', 278 device='drive0', sync='full', auto_dismiss=False, 279 target=self.qmp_target) 280 self.assert_qmp(result, 'return', {}) 281 282 result = self.vm.run_job('job0') 283 self.assertEqual(result, 'Source and target image have different sizes') 284 285 # qed does not support shrinking 286 @iotests.skip_for_formats(('qed')) 287 def test_small_target(self): 288 self.do_test_target_size(self.image_len // 2) 289 290 def test_large_target(self): 291 self.do_test_target_size(self.image_len * 2) 292 293 test_large_cluster = None 294 test_image_not_found = None 295 test_small_buffer2 = None 296 297class TestSingleDriveZeroLength(TestSingleDrive): 298 image_len = 0 299 test_small_buffer2 = None 300 test_large_cluster = None 301 302class TestSingleBlockdevZeroLength(TestSingleBlockdev): 303 image_len = 0 304 test_small_target = None 305 test_large_target = None 306 307class TestSingleDriveUnalignedLength(TestSingleDrive): 308 image_len = 1025 * 1024 309 test_small_buffer2 = None 310 test_large_cluster = None 311 312class TestSingleBlockdevUnalignedLength(TestSingleBlockdev): 313 image_len = 1025 * 1024 314 315class TestMirrorNoBacking(iotests.QMPTestCase): 316 image_len = 2 * 1024 * 1024 # MB 317 318 def setUp(self): 319 iotests.create_image(backing_img, TestMirrorNoBacking.image_len) 320 qemu_img('create', '-f', iotests.imgfmt, 321 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) 322 self.vm = iotests.VM().add_drive(test_img) 323 self.vm.launch() 324 325 def tearDown(self): 326 self.vm.shutdown() 327 os.remove(test_img) 328 os.remove(backing_img) 329 try: 330 os.remove(target_backing_img) 331 except: 332 pass 333 os.remove(target_img) 334 335 def test_complete(self): 336 self.assert_no_active_block_jobs() 337 338 qemu_img('create', '-f', iotests.imgfmt, 339 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) 340 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 341 mode='existing', target=target_img) 342 self.assert_qmp(result, 'return', {}) 343 344 self.complete_and_wait() 345 result = self.vm.qmp('query-block') 346 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 347 self.vm.shutdown() 348 self.assertTrue(iotests.compare_images(test_img, target_img), 349 'target image does not match source after mirroring') 350 351 def test_cancel(self): 352 self.assert_no_active_block_jobs() 353 354 qemu_img('create', '-f', iotests.imgfmt, 355 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) 356 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 357 mode='existing', target=target_img) 358 self.assert_qmp(result, 'return', {}) 359 360 self.wait_ready_and_cancel() 361 result = self.vm.qmp('query-block') 362 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 363 self.vm.shutdown() 364 self.assertTrue(iotests.compare_images(test_img, target_img), 365 'target image does not match source after mirroring') 366 367 def test_large_cluster(self): 368 self.assert_no_active_block_jobs() 369 370 # qemu-img create fails if the image is not there 371 qemu_img('create', '-f', iotests.imgfmt, '-o', 'size=%d' 372 %(TestMirrorNoBacking.image_len), target_backing_img) 373 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' 374 % (TestMirrorNoBacking.image_len, target_backing_img), 375 '-F', iotests.imgfmt, target_img) 376 377 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 378 mode='existing', target=target_img) 379 self.assert_qmp(result, 'return', {}) 380 381 self.complete_and_wait() 382 result = self.vm.qmp('query-block') 383 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 384 self.vm.shutdown() 385 self.assertTrue(iotests.compare_images(test_img, target_img), 386 'target image does not match source after mirroring') 387 388class TestMirrorResized(iotests.QMPTestCase): 389 backing_len = 1 * 1024 * 1024 # MB 390 image_len = 2 * 1024 * 1024 # MB 391 392 def setUp(self): 393 iotests.create_image(backing_img, TestMirrorResized.backing_len) 394 qemu_img('create', '-f', iotests.imgfmt, 395 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) 396 qemu_img('resize', test_img, '2M') 397 self.vm = iotests.VM().add_drive(test_img) 398 self.vm.launch() 399 400 def tearDown(self): 401 self.vm.shutdown() 402 os.remove(test_img) 403 os.remove(backing_img) 404 try: 405 os.remove(target_img) 406 except OSError: 407 pass 408 409 def test_complete_top(self): 410 self.assert_no_active_block_jobs() 411 412 result = self.vm.qmp('drive-mirror', device='drive0', sync='top', 413 target=target_img) 414 self.assert_qmp(result, 'return', {}) 415 416 self.complete_and_wait() 417 result = self.vm.qmp('query-block') 418 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 419 self.vm.shutdown() 420 self.assertTrue(iotests.compare_images(test_img, target_img), 421 'target image does not match source after mirroring') 422 423 def test_complete_full(self): 424 self.assert_no_active_block_jobs() 425 426 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 427 target=target_img) 428 self.assert_qmp(result, 'return', {}) 429 430 self.complete_and_wait() 431 result = self.vm.qmp('query-block') 432 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 433 self.vm.shutdown() 434 self.assertTrue(iotests.compare_images(test_img, target_img), 435 'target image does not match source after mirroring') 436 437class TestReadErrors(iotests.QMPTestCase): 438 image_len = 2 * 1024 * 1024 # MB 439 440 # this should be a multiple of twice the default granularity 441 # so that we hit this offset first in state 1 442 MIRROR_GRANULARITY = 1024 * 1024 443 444 def create_blkdebug_file(self, name, event, errno): 445 file = open(name, 'w') 446 file.write(''' 447[inject-error] 448state = "1" 449event = "%s" 450errno = "%d" 451immediately = "off" 452once = "on" 453sector = "%d" 454 455[set-state] 456state = "1" 457event = "%s" 458new_state = "2" 459 460[set-state] 461state = "2" 462event = "%s" 463new_state = "1" 464''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) 465 file.close() 466 467 def setUp(self): 468 self.blkdebug_file = backing_img + ".blkdebug" 469 iotests.create_image(backing_img, TestReadErrors.image_len) 470 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 471 qemu_img('create', '-f', iotests.imgfmt, 472 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 473 % (self.blkdebug_file, backing_img), 474 test_img) 475 # Write something for tests that use sync='top' 476 qemu_io('-c', 'write %d 512' % (self.MIRROR_GRANULARITY + 65536), 477 test_img) 478 self.vm = iotests.VM().add_drive(test_img) 479 self.vm.launch() 480 481 def tearDown(self): 482 self.vm.shutdown() 483 os.remove(test_img) 484 os.remove(target_img) 485 os.remove(backing_img) 486 os.remove(self.blkdebug_file) 487 488 def test_report_read(self): 489 self.assert_no_active_block_jobs() 490 491 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 492 target=target_img) 493 self.assert_qmp(result, 'return', {}) 494 495 completed = False 496 error = False 497 while not completed: 498 for event in self.vm.get_qmp_events(wait=True): 499 if event['event'] == 'BLOCK_JOB_ERROR': 500 self.assert_qmp(event, 'data/device', 'drive0') 501 self.assert_qmp(event, 'data/operation', 'read') 502 error = True 503 elif event['event'] == 'BLOCK_JOB_READY': 504 self.assertTrue(False, 'job completed unexpectedly') 505 elif event['event'] == 'BLOCK_JOB_COMPLETED': 506 self.assertTrue(error, 'job completed unexpectedly') 507 self.assert_qmp(event, 'data/type', 'mirror') 508 self.assert_qmp(event, 'data/device', 'drive0') 509 self.assert_qmp(event, 'data/error', 'Input/output error') 510 completed = True 511 elif event['event'] == 'JOB_STATUS_CHANGE': 512 self.assert_qmp(event, 'data/id', 'drive0') 513 514 self.assert_no_active_block_jobs() 515 516 def test_ignore_read(self): 517 self.assert_no_active_block_jobs() 518 519 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 520 target=target_img, on_source_error='ignore') 521 self.assert_qmp(result, 'return', {}) 522 523 event = self.vm.get_qmp_event(wait=True) 524 while event['event'] == 'JOB_STATUS_CHANGE': 525 self.assert_qmp(event, 'data/id', 'drive0') 526 event = self.vm.get_qmp_event(wait=True) 527 528 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 529 self.assert_qmp(event, 'data/device', 'drive0') 530 self.assert_qmp(event, 'data/operation', 'read') 531 result = self.vm.qmp('query-block-jobs') 532 self.assertIn(result['return'][0]['status'], ['running', 'ready']) 533 self.complete_and_wait() 534 535 def test_large_cluster(self): 536 self.assert_no_active_block_jobs() 537 538 # Test COW into the target image. The first half of the 539 # cluster at MIRROR_GRANULARITY has to be copied from 540 # backing_img, even though sync='top'. 541 qemu_img('create', '-f', iotests.imgfmt, 542 '-ocluster_size=131072,backing_file=%s' %(backing_img), 543 '-F', 'raw', target_img) 544 result = self.vm.qmp('drive-mirror', device='drive0', sync='top', 545 on_source_error='ignore', 546 mode='existing', target=target_img) 547 self.assert_qmp(result, 'return', {}) 548 549 event = self.vm.get_qmp_event(wait=True) 550 while event['event'] == 'JOB_STATUS_CHANGE': 551 self.assert_qmp(event, 'data/id', 'drive0') 552 event = self.vm.get_qmp_event(wait=True) 553 554 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 555 self.assert_qmp(event, 'data/device', 'drive0') 556 self.assert_qmp(event, 'data/operation', 'read') 557 result = self.vm.qmp('query-block-jobs') 558 self.assertIn(result['return'][0]['status'], ['running', 'ready']) 559 self.complete_and_wait() 560 self.vm.shutdown() 561 562 # Detach blkdebug to compare images successfully 563 qemu_img('rebase', '-f', iotests.imgfmt, '-u', '-b', backing_img, 564 '-F', 'raw', test_img) 565 self.assertTrue(iotests.compare_images(test_img, target_img), 566 'target image does not match source after mirroring') 567 568 def test_stop_read(self): 569 self.assert_no_active_block_jobs() 570 571 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 572 target=target_img, on_source_error='stop') 573 self.assert_qmp(result, 'return', {}) 574 575 error = False 576 ready = False 577 while not ready: 578 for event in self.vm.get_qmp_events(wait=True): 579 if event['event'] == 'BLOCK_JOB_ERROR': 580 self.assert_qmp(event, 'data/device', 'drive0') 581 self.assert_qmp(event, 'data/operation', 'read') 582 583 if self.vm.qmp('query-block-jobs')['return'][0]['status'] != 'paused': 584 self.vm.events_wait([( 585 'JOB_STATUS_CHANGE', 586 {'data': {'id': 'drive0', 'status': 'paused'}} 587 )]) 588 589 result = self.vm.qmp('query-block-jobs') 590 self.assert_qmp(result, 'return[0]/status', 'paused') 591 self.assert_qmp(result, 'return[0]/io-status', 'failed') 592 593 result = self.vm.qmp('block-job-resume', device='drive0') 594 self.assert_qmp(result, 'return', {}) 595 error = True 596 elif event['event'] == 'BLOCK_JOB_READY': 597 self.assertTrue(error, 'job completed unexpectedly') 598 self.assert_qmp(event, 'data/device', 'drive0') 599 ready = True 600 601 result = self.vm.qmp('query-block-jobs') 602 self.assert_qmp(result, 'return[0]/status', 'ready') 603 self.assert_qmp(result, 'return[0]/io-status', 'ok') 604 605 self.complete_and_wait(wait_ready=False) 606 self.assert_no_active_block_jobs() 607 608class TestWriteErrors(iotests.QMPTestCase): 609 image_len = 2 * 1024 * 1024 # MB 610 611 # this should be a multiple of twice the default granularity 612 # so that we hit this offset first in state 1 613 MIRROR_GRANULARITY = 1024 * 1024 614 615 def create_blkdebug_file(self, name, event, errno): 616 file = open(name, 'w') 617 file.write(''' 618[inject-error] 619state = "1" 620event = "%s" 621errno = "%d" 622immediately = "off" 623once = "on" 624sector = "%d" 625 626[set-state] 627state = "1" 628event = "%s" 629new_state = "2" 630 631[set-state] 632state = "2" 633event = "%s" 634new_state = "1" 635''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) 636 file.close() 637 638 def setUp(self): 639 self.blkdebug_file = target_img + ".blkdebug" 640 iotests.create_image(backing_img, TestWriteErrors.image_len) 641 self.create_blkdebug_file(self.blkdebug_file, "write_aio", 5) 642 qemu_img('create', '-f', iotests.imgfmt, 643 '-obacking_file=%s' %(backing_img), '-F', 'raw', test_img) 644 self.vm = iotests.VM().add_drive(test_img) 645 self.target_img = 'blkdebug:%s:%s' % (self.blkdebug_file, target_img) 646 qemu_img('create', '-f', iotests.imgfmt, '-osize=%d' %(TestWriteErrors.image_len), target_img) 647 self.vm.launch() 648 649 def tearDown(self): 650 self.vm.shutdown() 651 os.remove(test_img) 652 os.remove(target_img) 653 os.remove(backing_img) 654 os.remove(self.blkdebug_file) 655 656 def test_report_write(self): 657 self.assert_no_active_block_jobs() 658 659 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 660 mode='existing', target=self.target_img) 661 self.assert_qmp(result, 'return', {}) 662 663 completed = False 664 error = False 665 while not completed: 666 for event in self.vm.get_qmp_events(wait=True): 667 if event['event'] == 'BLOCK_JOB_ERROR': 668 self.assert_qmp(event, 'data/device', 'drive0') 669 self.assert_qmp(event, 'data/operation', 'write') 670 error = True 671 elif event['event'] == 'BLOCK_JOB_READY': 672 self.assertTrue(False, 'job completed unexpectedly') 673 elif event['event'] == 'BLOCK_JOB_COMPLETED': 674 self.assertTrue(error, 'job completed unexpectedly') 675 self.assert_qmp(event, 'data/type', 'mirror') 676 self.assert_qmp(event, 'data/device', 'drive0') 677 self.assert_qmp(event, 'data/error', 'Input/output error') 678 completed = True 679 680 self.assert_no_active_block_jobs() 681 682 def test_ignore_write(self): 683 self.assert_no_active_block_jobs() 684 685 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 686 mode='existing', target=self.target_img, 687 on_target_error='ignore') 688 self.assert_qmp(result, 'return', {}) 689 690 event = self.vm.event_wait(name='BLOCK_JOB_ERROR') 691 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 692 self.assert_qmp(event, 'data/device', 'drive0') 693 self.assert_qmp(event, 'data/operation', 'write') 694 result = self.vm.qmp('query-block-jobs') 695 self.assertIn(result['return'][0]['status'], ['running', 'ready']) 696 self.complete_and_wait() 697 698 def test_stop_write(self): 699 self.assert_no_active_block_jobs() 700 701 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 702 mode='existing', target=self.target_img, 703 on_target_error='stop') 704 self.assert_qmp(result, 'return', {}) 705 706 error = False 707 ready = False 708 while not ready: 709 for event in self.vm.get_qmp_events(wait=True): 710 if event['event'] == 'BLOCK_JOB_ERROR': 711 self.assert_qmp(event, 'data/device', 'drive0') 712 self.assert_qmp(event, 'data/operation', 'write') 713 714 if self.vm.qmp('query-block-jobs')['return'][0]['status'] != 'paused': 715 self.vm.events_wait([( 716 'JOB_STATUS_CHANGE', 717 {'data': {'id': 'drive0', 'status': 'paused'}} 718 )]) 719 720 result = self.vm.qmp('query-block-jobs') 721 self.assert_qmp(result, 'return[0]/status', 'paused') 722 self.assert_qmp(result, 'return[0]/io-status', 'failed') 723 724 result = self.vm.qmp('block-job-resume', device='drive0') 725 self.assert_qmp(result, 'return', {}) 726 727 result = self.vm.qmp('query-block-jobs') 728 self.assertIn(result['return'][0]['status'], ['running', 'ready']) 729 self.assert_qmp(result, 'return[0]/io-status', 'ok') 730 error = True 731 elif event['event'] == 'BLOCK_JOB_READY': 732 self.assertTrue(error, 'job completed unexpectedly') 733 self.assert_qmp(event, 'data/device', 'drive0') 734 ready = True 735 736 self.complete_and_wait(wait_ready=False) 737 self.assert_no_active_block_jobs() 738 739class TestSetSpeed(iotests.QMPTestCase): 740 image_len = 80 * 1024 * 1024 # MB 741 742 def setUp(self): 743 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 744 qemu_img('create', '-f', iotests.imgfmt, 745 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) 746 self.vm = iotests.VM().add_drive(test_img) 747 self.vm.launch() 748 749 def tearDown(self): 750 self.vm.shutdown() 751 os.remove(test_img) 752 os.remove(backing_img) 753 os.remove(target_img) 754 755 def test_set_speed(self): 756 self.assert_no_active_block_jobs() 757 758 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 759 target=target_img) 760 self.assert_qmp(result, 'return', {}) 761 762 # Default speed is 0 763 result = self.vm.qmp('query-block-jobs') 764 self.assert_qmp(result, 'return[0]/device', 'drive0') 765 self.assert_qmp(result, 'return[0]/speed', 0) 766 767 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 768 self.assert_qmp(result, 'return', {}) 769 770 # Ensure the speed we set was accepted 771 result = self.vm.qmp('query-block-jobs') 772 self.assert_qmp(result, 'return[0]/device', 'drive0') 773 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 774 775 self.wait_ready_and_cancel() 776 777 # Check setting speed in drive-mirror works 778 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 779 target=target_img, speed=4*1024*1024) 780 self.assert_qmp(result, 'return', {}) 781 782 result = self.vm.qmp('query-block-jobs') 783 self.assert_qmp(result, 'return[0]/device', 'drive0') 784 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 785 786 self.wait_ready_and_cancel() 787 788 def test_set_speed_invalid(self): 789 self.assert_no_active_block_jobs() 790 791 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 792 target=target_img, speed=-1) 793 self.assert_qmp(result, 'error/class', 'GenericError') 794 795 self.assert_no_active_block_jobs() 796 797 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 798 target=target_img) 799 self.assert_qmp(result, 'return', {}) 800 801 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 802 self.assert_qmp(result, 'error/class', 'GenericError') 803 804 self.wait_ready_and_cancel() 805 806class TestUnbackedSource(iotests.QMPTestCase): 807 image_len = 2 * 1024 * 1024 # MB 808 809 def setUp(self): 810 qemu_img('create', '-f', iotests.imgfmt, test_img, 811 str(TestUnbackedSource.image_len)) 812 self.vm = iotests.VM() 813 self.vm.launch() 814 result = self.vm.qmp('blockdev-add', node_name='drive0', 815 driver=iotests.imgfmt, 816 file={ 817 'driver': 'file', 818 'filename': test_img, 819 }) 820 self.assert_qmp(result, 'return', {}) 821 822 def tearDown(self): 823 self.vm.shutdown() 824 os.remove(test_img) 825 os.remove(target_img) 826 827 def test_absolute_paths_full(self): 828 self.assert_no_active_block_jobs() 829 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 830 sync='full', target=target_img, 831 mode='absolute-paths') 832 self.assert_qmp(result, 'return', {}) 833 self.complete_and_wait() 834 self.assert_no_active_block_jobs() 835 836 def test_absolute_paths_top(self): 837 self.assert_no_active_block_jobs() 838 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 839 sync='top', target=target_img, 840 mode='absolute-paths') 841 self.assert_qmp(result, 'return', {}) 842 self.complete_and_wait() 843 self.assert_no_active_block_jobs() 844 845 def test_absolute_paths_none(self): 846 self.assert_no_active_block_jobs() 847 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 848 sync='none', target=target_img, 849 mode='absolute-paths') 850 self.assert_qmp(result, 'return', {}) 851 self.complete_and_wait() 852 self.assert_no_active_block_jobs() 853 854 def test_existing_full(self): 855 qemu_img('create', '-f', iotests.imgfmt, target_img, 856 str(self.image_len)) 857 qemu_io('-c', 'write -P 42 0 64k', target_img) 858 859 self.assert_no_active_block_jobs() 860 result = self.vm.qmp('drive-mirror', job_id='drive0', device='drive0', 861 sync='full', target=target_img, mode='existing') 862 self.assert_qmp(result, 'return', {}) 863 self.complete_and_wait() 864 self.assert_no_active_block_jobs() 865 866 result = self.vm.qmp('blockdev-del', node_name='drive0') 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') 871 872 def test_blockdev_full(self): 873 qemu_img('create', '-f', iotests.imgfmt, target_img, 874 str(self.image_len)) 875 qemu_io('-c', 'write -P 42 0 64k', target_img) 876 877 result = self.vm.qmp('blockdev-add', node_name='target', 878 driver=iotests.imgfmt, 879 file={ 880 'driver': 'file', 881 'filename': target_img, 882 }) 883 self.assert_qmp(result, 'return', {}) 884 885 self.assert_no_active_block_jobs() 886 result = self.vm.qmp('blockdev-mirror', job_id='drive0', device='drive0', 887 sync='full', target='target') 888 self.assert_qmp(result, 'return', {}) 889 self.complete_and_wait() 890 self.assert_no_active_block_jobs() 891 892 result = self.vm.qmp('blockdev-del', node_name='drive0') 893 self.assert_qmp(result, 'return', {}) 894 895 result = self.vm.qmp('blockdev-del', node_name='target') 896 self.assert_qmp(result, 'return', {}) 897 898 self.assertTrue(iotests.compare_images(test_img, target_img), 899 'target image does not match source after mirroring') 900 901class TestGranularity(iotests.QMPTestCase): 902 image_len = 10 * 1024 * 1024 # MB 903 904 def setUp(self): 905 qemu_img('create', '-f', iotests.imgfmt, test_img, 906 str(TestGranularity.image_len)) 907 qemu_io('-c', 'write 0 %d' % (self.image_len), 908 test_img) 909 self.vm = iotests.VM().add_drive(test_img) 910 self.vm.launch() 911 912 def tearDown(self): 913 self.vm.shutdown() 914 self.assertTrue(iotests.compare_images(test_img, target_img), 915 'target image does not match source after mirroring') 916 os.remove(test_img) 917 os.remove(target_img) 918 919 def test_granularity(self): 920 self.assert_no_active_block_jobs() 921 result = self.vm.qmp('drive-mirror', device='drive0', 922 sync='full', target=target_img, 923 mode='absolute-paths', granularity=8192) 924 self.assert_qmp(result, 'return', {}) 925 926 event = self.vm.get_qmp_event(wait=60.0) 927 while event['event'] == 'JOB_STATUS_CHANGE': 928 self.assert_qmp(event, 'data/id', 'drive0') 929 event = self.vm.get_qmp_event(wait=60.0) 930 931 # Failures will manifest as COMPLETED/ERROR. 932 self.assert_qmp(event, 'event', 'BLOCK_JOB_READY') 933 self.complete_and_wait(drive='drive0', wait_ready=False) 934 self.assert_no_active_block_jobs() 935 936class TestRepairQuorum(iotests.QMPTestCase): 937 """ This class test quorum file repair using drive-mirror. 938 It's mostly a fork of TestSingleDrive """ 939 image_len = 1 * 1024 * 1024 # MB 940 IMAGES = [ quorum_img1, quorum_img2, quorum_img3 ] 941 942 @iotests.skip_if_unsupported(['quorum']) 943 def setUp(self): 944 self.vm = iotests.VM() 945 946 if iotests.qemu_default_machine == 'pc': 947 self.vm.add_drive(None, 'media=cdrom', 'ide') 948 949 # Add each individual quorum images 950 for i in self.IMAGES: 951 qemu_img('create', '-f', iotests.imgfmt, i, 952 str(self.image_len)) 953 # Assign a node name to each quorum image in order to manipulate 954 # them 955 opts = "node-name=img%i" % self.IMAGES.index(i) 956 opts += ',driver=%s' % iotests.imgfmt 957 opts += ',file.driver=file' 958 opts += ',file.filename=%s' % i 959 self.vm = self.vm.add_blockdev(opts) 960 961 self.vm.launch() 962 963 #assemble the quorum block device from the individual files 964 args = { "driver": "quorum", "node-name": "quorum0", 965 "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] } 966 result = self.vm.qmp("blockdev-add", **args) 967 self.assert_qmp(result, 'return', {}) 968 969 970 def tearDown(self): 971 self.vm.shutdown() 972 for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file, 973 nbd_sock_path ]: 974 # Do a try/except because the test may have deleted some images 975 try: 976 os.remove(i) 977 except OSError: 978 pass 979 980 def test_complete(self): 981 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 982 sync='full', node_name="repair0", replaces="img1", 983 target=quorum_repair_img, format=iotests.imgfmt) 984 self.assert_qmp(result, 'return', {}) 985 986 self.complete_and_wait(drive="job0") 987 self.assert_has_block_node("repair0", quorum_repair_img) 988 self.vm.assert_block_path('quorum0', '/children.1', 'repair0') 989 self.vm.shutdown() 990 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 991 'target image does not match source after mirroring') 992 993 def test_cancel(self): 994 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 995 sync='full', node_name="repair0", replaces="img1", 996 target=quorum_repair_img, format=iotests.imgfmt) 997 self.assert_qmp(result, 'return', {}) 998 999 self.cancel_and_wait(drive="job0", force=True) 1000 # here we check that the last registered quorum file has not been 1001 # swapped out and unref 1002 self.assert_has_block_node(None, quorum_img3) 1003 1004 def test_cancel_after_ready(self): 1005 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1006 sync='full', node_name="repair0", replaces="img1", 1007 target=quorum_repair_img, format=iotests.imgfmt) 1008 self.assert_qmp(result, 'return', {}) 1009 1010 self.wait_ready_and_cancel(drive="job0") 1011 # here we check that the last registered quorum file has not been 1012 # swapped out and unref 1013 self.assert_has_block_node(None, quorum_img3) 1014 self.vm.shutdown() 1015 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 1016 'target image does not match source after mirroring') 1017 1018 def test_pause(self): 1019 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1020 sync='full', node_name="repair0", replaces="img1", 1021 target=quorum_repair_img, format=iotests.imgfmt) 1022 self.assert_qmp(result, 'return', {}) 1023 1024 self.pause_job('job0') 1025 1026 result = self.vm.qmp('query-block-jobs') 1027 offset = self.dictpath(result, 'return[0]/offset') 1028 1029 time.sleep(0.5) 1030 result = self.vm.qmp('query-block-jobs') 1031 self.assert_qmp(result, 'return[0]/offset', offset) 1032 1033 result = self.vm.qmp('block-job-resume', device='job0') 1034 self.assert_qmp(result, 'return', {}) 1035 1036 self.complete_and_wait(drive="job0") 1037 self.vm.shutdown() 1038 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 1039 'target image does not match source after mirroring') 1040 1041 def test_medium_not_found(self): 1042 if iotests.qemu_default_machine != 'pc': 1043 return 1044 1045 result = self.vm.qmp('drive-mirror', job_id='job0', device='drive0', # CD-ROM 1046 sync='full', 1047 node_name='repair0', 1048 replaces='img1', 1049 target=quorum_repair_img, format=iotests.imgfmt) 1050 self.assert_qmp(result, 'error/class', 'GenericError') 1051 1052 def test_image_not_found(self): 1053 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1054 sync='full', node_name='repair0', replaces='img1', 1055 mode='existing', target=quorum_repair_img, 1056 format=iotests.imgfmt) 1057 self.assert_qmp(result, 'error/class', 'GenericError') 1058 1059 def test_device_not_found(self): 1060 result = self.vm.qmp('drive-mirror', job_id='job0', 1061 device='nonexistent', sync='full', 1062 node_name='repair0', 1063 replaces='img1', 1064 target=quorum_repair_img, format=iotests.imgfmt) 1065 self.assert_qmp(result, 'error/class', 'GenericError') 1066 1067 def test_wrong_sync_mode(self): 1068 result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0', 1069 node_name='repair0', 1070 replaces='img1', 1071 target=quorum_repair_img, format=iotests.imgfmt) 1072 self.assert_qmp(result, 'error/class', 'GenericError') 1073 1074 def test_no_node_name(self): 1075 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1076 sync='full', replaces='img1', 1077 target=quorum_repair_img, format=iotests.imgfmt) 1078 self.assert_qmp(result, 'error/class', 'GenericError') 1079 1080 def test_nonexistent_replaces(self): 1081 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1082 sync='full', node_name='repair0', replaces='img77', 1083 target=quorum_repair_img, format=iotests.imgfmt) 1084 self.assert_qmp(result, 'error/class', 'GenericError') 1085 1086 def test_after_a_quorum_snapshot(self): 1087 result = self.vm.qmp('blockdev-snapshot-sync', node_name='img1', 1088 snapshot_file=quorum_snapshot_file, 1089 snapshot_node_name="snap1"); 1090 1091 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1092 sync='full', node_name='repair0', replaces="img1", 1093 target=quorum_repair_img, format=iotests.imgfmt) 1094 self.assert_qmp(result, 'error/class', 'GenericError') 1095 1096 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1097 sync='full', node_name='repair0', replaces="snap1", 1098 target=quorum_repair_img, format=iotests.imgfmt) 1099 self.assert_qmp(result, 'return', {}) 1100 1101 self.complete_and_wait('job0') 1102 self.assert_has_block_node("repair0", quorum_repair_img) 1103 self.vm.assert_block_path('quorum0', '/children.1', 'repair0') 1104 1105 def test_with_other_parent(self): 1106 """ 1107 Check that we cannot replace a Quorum child when it has other 1108 parents. 1109 """ 1110 result = self.vm.qmp('nbd-server-start', 1111 addr={ 1112 'type': 'unix', 1113 'data': {'path': nbd_sock_path} 1114 }) 1115 self.assert_qmp(result, 'return', {}) 1116 1117 result = self.vm.qmp('nbd-server-add', device='img1') 1118 self.assert_qmp(result, 'return', {}) 1119 1120 result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', 1121 sync='full', node_name='repair0', replaces='img1', 1122 target=quorum_repair_img, format=iotests.imgfmt) 1123 self.assert_qmp(result, 'error/desc', 1124 "Cannot replace 'img1' by a node mirrored from " 1125 "'quorum0', because it cannot be guaranteed that doing " 1126 "so would not lead to an abrupt change of visible data") 1127 1128 def test_with_other_parents_after_mirror_start(self): 1129 """ 1130 The same as test_with_other_parent(), but add the NBD server 1131 only when the mirror job is already running. 1132 """ 1133 result = self.vm.qmp('nbd-server-start', 1134 addr={ 1135 'type': 'unix', 1136 'data': {'path': nbd_sock_path} 1137 }) 1138 self.assert_qmp(result, 'return', {}) 1139 1140 result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', 1141 sync='full', node_name='repair0', replaces='img1', 1142 target=quorum_repair_img, format=iotests.imgfmt) 1143 self.assert_qmp(result, 'return', {}) 1144 1145 result = self.vm.qmp('nbd-server-add', device='img1') 1146 self.assert_qmp(result, 'return', {}) 1147 1148 # The full error message goes to stderr, we will check it later 1149 self.complete_and_wait('mirror', 1150 completion_error='Operation not permitted') 1151 1152 # Should not have been replaced 1153 self.vm.assert_block_path('quorum0', '/children.1', 'img1') 1154 1155 # Check the full error message now 1156 self.vm.shutdown() 1157 log = self.vm.get_log() 1158 log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log) 1159 log = re.sub(r'^Formatting.*\n', '', log) 1160 log = re.sub(r'\n\[I \+\d+\.\d+\] CLOSED\n?$', '', log) 1161 log = re.sub(r'^%s: ' % os.path.basename(iotests.qemu_prog), '', log) 1162 1163 self.assertEqual(log, 1164 "Can no longer replace 'img1' by 'repair0', because " + 1165 "it can no longer be guaranteed that doing so would " + 1166 "not lead to an abrupt change of visible data") 1167 1168 1169# Test mirroring with a source that does not have any parents (not even a 1170# BlockBackend) 1171class TestOrphanedSource(iotests.QMPTestCase): 1172 def setUp(self): 1173 blk0 = { 'node-name': 'src', 1174 'driver': 'null-co' } 1175 1176 blk1 = { 'node-name': 'dest', 1177 'driver': 'null-co' } 1178 1179 blk2 = { 'node-name': 'dest-ro', 1180 'driver': 'null-co', 1181 'read-only': 'on' } 1182 1183 self.vm = iotests.VM() 1184 self.vm.add_blockdev(self.vm.qmp_to_opts(blk0)) 1185 self.vm.add_blockdev(self.vm.qmp_to_opts(blk1)) 1186 self.vm.add_blockdev(self.vm.qmp_to_opts(blk2)) 1187 self.vm.launch() 1188 1189 def tearDown(self): 1190 self.vm.shutdown() 1191 1192 def test_no_job_id(self): 1193 self.assert_no_active_block_jobs() 1194 1195 result = self.vm.qmp('blockdev-mirror', device='src', sync='full', 1196 target='dest') 1197 self.assert_qmp(result, 'error/class', 'GenericError') 1198 1199 def test_success(self): 1200 self.assert_no_active_block_jobs() 1201 1202 result = self.vm.qmp('blockdev-mirror', job_id='job', device='src', 1203 sync='full', target='dest') 1204 self.assert_qmp(result, 'return', {}) 1205 1206 self.complete_and_wait('job') 1207 1208 def test_failing_permissions(self): 1209 self.assert_no_active_block_jobs() 1210 1211 result = self.vm.qmp('blockdev-mirror', device='src', sync='full', 1212 target='dest-ro') 1213 self.assert_qmp(result, 'error/class', 'GenericError') 1214 1215 def test_failing_permission_in_complete(self): 1216 self.assert_no_active_block_jobs() 1217 1218 # Unshare consistent-read on the target 1219 # (The mirror job does not care) 1220 result = self.vm.qmp('blockdev-add', 1221 driver='blkdebug', 1222 node_name='dest-perm', 1223 image='dest', 1224 unshare_child_perms=['consistent-read']) 1225 self.assert_qmp(result, 'return', {}) 1226 1227 result = self.vm.qmp('blockdev-mirror', job_id='job', device='src', 1228 sync='full', target='dest', 1229 filter_node_name='mirror-filter') 1230 self.assert_qmp(result, 'return', {}) 1231 1232 # Require consistent-read on the source 1233 # (We can only add this node once the job has started, or it 1234 # will complain that it does not want to run on non-root nodes) 1235 result = self.vm.qmp('blockdev-add', 1236 driver='blkdebug', 1237 node_name='src-perm', 1238 image='src', 1239 take_child_perms=['consistent-read']) 1240 self.assert_qmp(result, 'return', {}) 1241 1242 # While completing, mirror will attempt to replace src by 1243 # dest, which must fail because src-perm requires 1244 # consistent-read but dest-perm does not share it; thus 1245 # aborting the job when it is supposed to complete 1246 self.complete_and_wait('job', 1247 completion_error='Operation not permitted') 1248 1249 # Assert that all of our nodes are still there (except for the 1250 # mirror filter, which should be gone despite the failure) 1251 nodes = self.vm.qmp('query-named-block-nodes')['return'] 1252 nodes = [node['node-name'] for node in nodes] 1253 1254 for expect in ('src', 'src-perm', 'dest', 'dest-perm'): 1255 self.assertTrue(expect in nodes, '%s disappeared' % expect) 1256 self.assertFalse('mirror-filter' in nodes, 1257 'Mirror filter node did not disappear') 1258 1259# Test cases for @replaces that do not necessarily involve Quorum 1260class TestReplaces(iotests.QMPTestCase): 1261 # Each of these test cases needs their own block graph, so do not 1262 # create any nodes here 1263 def setUp(self): 1264 self.vm = iotests.VM() 1265 self.vm.launch() 1266 1267 def tearDown(self): 1268 self.vm.shutdown() 1269 for img in (test_img, target_img): 1270 try: 1271 os.remove(img) 1272 except OSError: 1273 pass 1274 1275 @iotests.skip_if_unsupported(['copy-on-read']) 1276 def test_replace_filter(self): 1277 """ 1278 Check that we can replace filter nodes. 1279 """ 1280 result = self.vm.qmp('blockdev-add', **{ 1281 'driver': 'copy-on-read', 1282 'node-name': 'filter0', 1283 'file': { 1284 'driver': 'copy-on-read', 1285 'node-name': 'filter1', 1286 'file': { 1287 'driver': 'null-co' 1288 } 1289 } 1290 }) 1291 self.assert_qmp(result, 'return', {}) 1292 1293 result = self.vm.qmp('blockdev-add', 1294 node_name='target', driver='null-co') 1295 self.assert_qmp(result, 'return', {}) 1296 1297 result = self.vm.qmp('blockdev-mirror', job_id='mirror', device='filter0', 1298 target='target', sync='full', replaces='filter1') 1299 self.assert_qmp(result, 'return', {}) 1300 1301 self.complete_and_wait('mirror') 1302 1303 self.vm.assert_block_path('filter0', '/file', 'target') 1304 1305# Tests for mirror with filters (and how the mirror filter behaves, as 1306# an example for an implicit filter) 1307class TestFilters(iotests.QMPTestCase): 1308 def setUp(self): 1309 qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') 1310 qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, 1311 '-F', iotests.imgfmt, test_img) 1312 qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, 1313 '-F', iotests.imgfmt, target_img) 1314 1315 qemu_io('-c', 'write -P 1 0 512k', backing_img) 1316 qemu_io('-c', 'write -P 2 512k 512k', test_img) 1317 1318 self.vm = iotests.VM().add_device('virtio-scsi,id=vio-scsi') 1319 self.vm.launch() 1320 1321 result = self.vm.qmp('blockdev-add', **{ 1322 'node-name': 'target', 1323 'driver': iotests.imgfmt, 1324 'file': { 1325 'driver': 'file', 1326 'filename': target_img 1327 }, 1328 'backing': None 1329 }) 1330 self.assert_qmp(result, 'return', {}) 1331 1332 self.filterless_chain = { 1333 'node-name': 'source', 1334 'driver': iotests.imgfmt, 1335 'file': { 1336 'driver': 'file', 1337 'filename': test_img 1338 }, 1339 'backing': { 1340 'node-name': 'backing', 1341 'driver': iotests.imgfmt, 1342 'file': { 1343 'driver': 'file', 1344 'filename': backing_img 1345 } 1346 } 1347 } 1348 1349 def tearDown(self): 1350 self.vm.shutdown() 1351 1352 os.remove(test_img) 1353 os.remove(target_img) 1354 os.remove(backing_img) 1355 1356 def test_cor(self): 1357 result = self.vm.qmp('blockdev-add', **{ 1358 'node-name': 'filter', 1359 'driver': 'copy-on-read', 1360 'file': self.filterless_chain 1361 }) 1362 self.assert_qmp(result, 'return', {}) 1363 1364 result = self.vm.qmp('blockdev-mirror', 1365 job_id='mirror', 1366 device='filter', 1367 target='target', 1368 sync='top') 1369 self.assert_qmp(result, 'return', {}) 1370 1371 self.complete_and_wait('mirror') 1372 1373 self.vm.qmp('blockdev-del', node_name='target') 1374 1375 target_map = qemu_img_map(target_img) 1376 1377 assert target_map[0]['start'] == 0 1378 assert target_map[0]['length'] == 512 * 1024 1379 assert target_map[0]['depth'] == 1 1380 1381 assert target_map[1]['start'] == 512 * 1024 1382 assert target_map[1]['length'] == 512 * 1024 1383 assert target_map[1]['depth'] == 0 1384 1385 def test_implicit_mirror_filter(self): 1386 result = self.vm.qmp('blockdev-add', **self.filterless_chain) 1387 self.assert_qmp(result, 'return', {}) 1388 1389 # We need this so we can query from above the mirror node 1390 result = self.vm.qmp('device_add', 1391 driver='scsi-hd', 1392 id='virtio', 1393 bus='vio-scsi.0', 1394 drive='source') 1395 self.assert_qmp(result, 'return', {}) 1396 1397 result = self.vm.qmp('blockdev-mirror', 1398 job_id='mirror', 1399 device='source', 1400 target='target', 1401 sync='top') 1402 self.assert_qmp(result, 'return', {}) 1403 1404 # The mirror filter is now an implicit node, so it should be 1405 # invisible when querying the backing chain 1406 blockdevs = self.vm.qmp('query-block')['return'] 1407 device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio') 1408 1409 assert device_info['inserted']['node-name'] == 'source' 1410 1411 image_info = device_info['inserted']['image'] 1412 assert image_info['filename'] == test_img 1413 assert image_info['backing-image']['filename'] == backing_img 1414 1415 self.complete_and_wait('mirror') 1416 1417 def test_explicit_mirror_filter(self): 1418 # Same test as above, but this time we give the mirror filter 1419 # a node-name so it will not be invisible 1420 result = self.vm.qmp('blockdev-add', **self.filterless_chain) 1421 self.assert_qmp(result, 'return', {}) 1422 1423 # We need this so we can query from above the mirror node 1424 result = self.vm.qmp('device_add', 1425 driver='scsi-hd', 1426 id='virtio', 1427 bus='vio-scsi.0', 1428 drive='source') 1429 self.assert_qmp(result, 'return', {}) 1430 1431 result = self.vm.qmp('blockdev-mirror', 1432 job_id='mirror', 1433 device='source', 1434 target='target', 1435 sync='top', 1436 filter_node_name='mirror-filter') 1437 self.assert_qmp(result, 'return', {}) 1438 1439 # With a node-name given to it, the mirror filter should now 1440 # be visible 1441 blockdevs = self.vm.qmp('query-block')['return'] 1442 device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio') 1443 1444 assert device_info['inserted']['node-name'] == 'mirror-filter' 1445 1446 self.complete_and_wait('mirror') 1447 1448 1449if __name__ == '__main__': 1450 iotests.main(supported_fmts=['qcow2', 'qed'], 1451 supported_protocols=['file'], 1452 supported_platforms=['linux', 'freebsd', 'netbsd', 'openbsd']) 1453