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 self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', 69 target=self.qmp_target) 70 71 self.complete_and_wait() 72 result = self.vm.qmp('query-block') 73 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 74 self.vm.shutdown() 75 self.assertTrue(iotests.compare_images(test_img, target_img), 76 'target image does not match source after mirroring') 77 78 def test_cancel(self): 79 self.assert_no_active_block_jobs() 80 81 self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', 82 target=self.qmp_target) 83 84 self.cancel_and_wait(force=True) 85 result = self.vm.qmp('query-block') 86 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 87 88 def test_cancel_after_ready(self): 89 self.assert_no_active_block_jobs() 90 91 self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', 92 target=self.qmp_target) 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 self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', 105 target=self.qmp_target) 106 107 self.pause_job('drive0') 108 109 result = self.vm.qmp('query-block-jobs') 110 offset = self.dictpath(result, 'return[0]/offset') 111 112 time.sleep(0.5) 113 result = self.vm.qmp('query-block-jobs') 114 self.assert_qmp(result, 'return[0]/offset', offset) 115 116 self.vm.cmd('block-job-resume', device='drive0') 117 118 self.complete_and_wait() 119 self.vm.shutdown() 120 self.assertTrue(iotests.compare_images(test_img, target_img), 121 'target image does not match source after mirroring') 122 123 def test_small_buffer(self): 124 self.assert_no_active_block_jobs() 125 126 # A small buffer is rounded up automatically 127 self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', 128 buf_size=4096, target=self.qmp_target) 129 130 self.complete_and_wait() 131 result = self.vm.qmp('query-block') 132 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 133 self.vm.shutdown() 134 self.assertTrue(iotests.compare_images(test_img, target_img), 135 'target image does not match source after mirroring') 136 137 def test_small_buffer2(self): 138 self.assert_no_active_block_jobs() 139 140 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,size=%d' 141 % (self.image_len, self.image_len), target_img) 142 self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', 143 buf_size=65536, mode='existing', target=self.qmp_target) 144 145 self.complete_and_wait() 146 result = self.vm.qmp('query-block') 147 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 148 self.vm.shutdown() 149 self.assertTrue(iotests.compare_images(test_img, target_img), 150 'target image does not match source after mirroring') 151 152 def test_large_cluster(self): 153 self.assert_no_active_block_jobs() 154 155 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' 156 % (self.image_len, backing_img), 157 '-F', 'raw', target_img) 158 self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', 159 mode='existing', target=self.qmp_target) 160 161 self.complete_and_wait() 162 result = self.vm.qmp('query-block') 163 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 164 self.vm.shutdown() 165 self.assertTrue(iotests.compare_images(test_img, target_img), 166 'target image does not match source after mirroring') 167 168 # Tests that the insertion of the mirror_top filter node doesn't make a 169 # difference to query-block 170 def test_implicit_node(self): 171 self.assert_no_active_block_jobs() 172 173 self.vm.cmd(self.qmp_cmd, device='drive0', sync='full', 174 target=self.qmp_target) 175 176 result = self.vm.qmp('query-block') 177 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 178 self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) 179 self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img) 180 self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) 181 self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) 182 self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img) 183 184 result = self.vm.qmp('query-blockstats') 185 self.assert_qmp(result, 'return[0]/node-name', 'top') 186 self.assert_qmp(result, 'return[0]/backing/node-name', 'base') 187 188 self.cancel_and_wait(force=True) 189 result = self.vm.qmp('query-block') 190 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 191 self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) 192 self.assert_qmp(result, 'return[0]/inserted/backing_file', backing_img) 193 self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 1) 194 self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) 195 self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', backing_img) 196 197 result = self.vm.qmp('query-blockstats') 198 self.assert_qmp(result, 'return[0]/node-name', 'top') 199 self.assert_qmp(result, 'return[0]/backing/node-name', 'base') 200 201 def test_medium_not_found(self): 202 if iotests.qemu_default_machine != 'pc': 203 return 204 205 result = self.vm.qmp(self.qmp_cmd, device='ide1-cd0', sync='full', 206 target=self.qmp_target) 207 self.assert_qmp(result, 'error/class', 'GenericError') 208 209 def test_image_not_found(self): 210 result = self.vm.qmp(self.qmp_cmd, device='drive0', sync='full', 211 mode='existing', target=self.qmp_target) 212 self.assert_qmp(result, 'error/class', 'GenericError') 213 214 def test_device_not_found(self): 215 result = self.vm.qmp(self.qmp_cmd, device='nonexistent', sync='full', 216 target=self.qmp_target) 217 self.assert_qmp(result, 'error/class', 'GenericError') 218 219class TestSingleBlockdev(TestSingleDrive): 220 qmp_cmd = 'blockdev-mirror' 221 qmp_target = 'node1' 222 223 def setUp(self): 224 TestSingleDrive.setUp(self) 225 qemu_img('create', '-f', iotests.imgfmt, 226 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) 227 args = {'driver': iotests.imgfmt, 228 'node-name': self.qmp_target, 229 'file': { 'filename': target_img, 'driver': 'file' } } 230 self.vm.cmd("blockdev-add", args) 231 232 def test_mirror_to_self(self): 233 result = self.vm.qmp(self.qmp_cmd, job_id='job0', 234 device=self.qmp_target, sync='full', 235 target=self.qmp_target) 236 self.assert_qmp(result, 'error/class', 'GenericError') 237 238 def do_test_resize(self, device, node): 239 def pre_finalize(): 240 if device: 241 result = self.vm.qmp('block_resize', device=device, size=65536) 242 self.assert_qmp(result, 'error/class', 'GenericError') 243 244 result = self.vm.qmp('block_resize', node_name=node, size=65536) 245 self.assert_qmp(result, 'error/class', 'GenericError') 246 247 self.vm.cmd(self.qmp_cmd, job_id='job0', device='drive0', 248 sync='full', target=self.qmp_target, 249 auto_finalize=False, auto_dismiss=False) 250 251 result = self.vm.run_job('job0', auto_finalize=False, 252 pre_finalize=pre_finalize) 253 self.assertEqual(result, None) 254 255 def test_source_resize(self): 256 self.do_test_resize('drive0', 'top') 257 258 def test_target_resize(self): 259 self.do_test_resize(None, self.qmp_target) 260 261 def do_test_target_size(self, size): 262 self.vm.cmd('block_resize', node_name=self.qmp_target, 263 size=size) 264 265 self.vm.cmd(self.qmp_cmd, job_id='job0', 266 device='drive0', sync='full', auto_dismiss=False, 267 target=self.qmp_target) 268 269 result = self.vm.run_job('job0') 270 self.assertEqual(result, 'Source and target image have different sizes') 271 272 # qed does not support shrinking 273 @iotests.skip_for_formats(('qed')) 274 def test_small_target(self): 275 self.do_test_target_size(self.image_len // 2) 276 277 def test_large_target(self): 278 self.do_test_target_size(self.image_len * 2) 279 280 test_large_cluster = None 281 test_image_not_found = None 282 test_small_buffer2 = None 283 284class TestSingleDriveZeroLength(TestSingleDrive): 285 image_len = 0 286 test_small_buffer2 = None 287 test_large_cluster = None 288 289class TestSingleBlockdevZeroLength(TestSingleBlockdev): 290 image_len = 0 291 test_small_target = None 292 test_large_target = None 293 294class TestSingleDriveUnalignedLength(TestSingleDrive): 295 image_len = 1025 * 1024 296 test_small_buffer2 = None 297 test_large_cluster = None 298 299class TestSingleBlockdevUnalignedLength(TestSingleBlockdev): 300 image_len = 1025 * 1024 301 302class TestMirrorNoBacking(iotests.QMPTestCase): 303 image_len = 2 * 1024 * 1024 # MB 304 305 def setUp(self): 306 iotests.create_image(backing_img, TestMirrorNoBacking.image_len) 307 qemu_img('create', '-f', iotests.imgfmt, 308 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) 309 self.vm = iotests.VM().add_drive(test_img) 310 self.vm.launch() 311 312 def tearDown(self): 313 self.vm.shutdown() 314 os.remove(test_img) 315 os.remove(backing_img) 316 try: 317 os.remove(target_backing_img) 318 except: 319 pass 320 os.remove(target_img) 321 322 def test_complete(self): 323 self.assert_no_active_block_jobs() 324 325 qemu_img('create', '-f', iotests.imgfmt, 326 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) 327 self.vm.cmd('drive-mirror', device='drive0', sync='full', 328 mode='existing', target=target_img) 329 330 self.complete_and_wait() 331 result = self.vm.qmp('query-block') 332 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 333 self.vm.shutdown() 334 self.assertTrue(iotests.compare_images(test_img, target_img), 335 'target image does not match source after mirroring') 336 337 def test_cancel(self): 338 self.assert_no_active_block_jobs() 339 340 qemu_img('create', '-f', iotests.imgfmt, 341 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', target_img) 342 self.vm.cmd('drive-mirror', device='drive0', sync='full', 343 mode='existing', target=target_img) 344 345 self.wait_ready_and_cancel() 346 result = self.vm.qmp('query-block') 347 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 348 self.vm.shutdown() 349 self.assertTrue(iotests.compare_images(test_img, target_img), 350 'target image does not match source after mirroring') 351 352 def test_large_cluster(self): 353 self.assert_no_active_block_jobs() 354 355 # qemu-img create fails if the image is not there 356 qemu_img('create', '-f', iotests.imgfmt, '-o', 'size=%d' 357 %(TestMirrorNoBacking.image_len), target_backing_img) 358 qemu_img('create', '-f', iotests.imgfmt, '-o', 'cluster_size=%d,backing_file=%s' 359 % (TestMirrorNoBacking.image_len, target_backing_img), 360 '-F', iotests.imgfmt, target_img) 361 362 self.vm.cmd('drive-mirror', device='drive0', sync='full', 363 mode='existing', target=target_img) 364 365 self.complete_and_wait() 366 result = self.vm.qmp('query-block') 367 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 368 self.vm.shutdown() 369 self.assertTrue(iotests.compare_images(test_img, target_img), 370 'target image does not match source after mirroring') 371 372class TestMirrorResized(iotests.QMPTestCase): 373 backing_len = 1 * 1024 * 1024 # MB 374 image_len = 2 * 1024 * 1024 # MB 375 376 def setUp(self): 377 iotests.create_image(backing_img, TestMirrorResized.backing_len) 378 qemu_img('create', '-f', iotests.imgfmt, 379 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', test_img) 380 qemu_img('resize', test_img, '2M') 381 self.vm = iotests.VM().add_drive(test_img) 382 self.vm.launch() 383 384 def tearDown(self): 385 self.vm.shutdown() 386 os.remove(test_img) 387 os.remove(backing_img) 388 try: 389 os.remove(target_img) 390 except OSError: 391 pass 392 393 def test_complete_top(self): 394 self.assert_no_active_block_jobs() 395 396 self.vm.cmd('drive-mirror', device='drive0', sync='top', 397 target=target_img) 398 399 self.complete_and_wait() 400 result = self.vm.qmp('query-block') 401 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 402 self.vm.shutdown() 403 self.assertTrue(iotests.compare_images(test_img, target_img), 404 'target image does not match source after mirroring') 405 406 def test_complete_full(self): 407 self.assert_no_active_block_jobs() 408 409 self.vm.cmd('drive-mirror', device='drive0', sync='full', 410 target=target_img) 411 412 self.complete_and_wait() 413 result = self.vm.qmp('query-block') 414 self.assert_qmp(result, 'return[0]/inserted/file', target_img) 415 self.vm.shutdown() 416 self.assertTrue(iotests.compare_images(test_img, target_img), 417 'target image does not match source after mirroring') 418 419class TestReadErrors(iotests.QMPTestCase): 420 image_len = 2 * 1024 * 1024 # MB 421 422 # this should be a multiple of twice the default granularity 423 # so that we hit this offset first in state 1 424 MIRROR_GRANULARITY = 1024 * 1024 425 426 def create_blkdebug_file(self, name, event, errno): 427 file = open(name, 'w') 428 file.write(''' 429[inject-error] 430state = "1" 431event = "%s" 432errno = "%d" 433immediately = "off" 434once = "on" 435sector = "%d" 436 437[set-state] 438state = "1" 439event = "%s" 440new_state = "2" 441 442[set-state] 443state = "2" 444event = "%s" 445new_state = "1" 446''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) 447 file.close() 448 449 def setUp(self): 450 self.blkdebug_file = backing_img + ".blkdebug" 451 iotests.create_image(backing_img, TestReadErrors.image_len) 452 self.create_blkdebug_file(self.blkdebug_file, "read_aio", 5) 453 qemu_img('create', '-f', iotests.imgfmt, 454 '-o', 'backing_file=blkdebug:%s:%s,backing_fmt=raw' 455 % (self.blkdebug_file, backing_img), 456 test_img) 457 # Write something for tests that use sync='top' 458 qemu_io('-c', 'write %d 512' % (self.MIRROR_GRANULARITY + 65536), 459 test_img) 460 self.vm = iotests.VM().add_drive(test_img) 461 self.vm.launch() 462 463 def tearDown(self): 464 self.vm.shutdown() 465 os.remove(test_img) 466 os.remove(target_img) 467 os.remove(backing_img) 468 os.remove(self.blkdebug_file) 469 470 def test_report_read(self): 471 self.assert_no_active_block_jobs() 472 473 self.vm.cmd('drive-mirror', device='drive0', sync='full', 474 target=target_img) 475 476 completed = False 477 error = False 478 while not completed: 479 for event in self.vm.get_qmp_events(wait=True): 480 if event['event'] == 'BLOCK_JOB_ERROR': 481 self.assert_qmp(event, 'data/device', 'drive0') 482 self.assert_qmp(event, 'data/operation', 'read') 483 error = True 484 elif event['event'] == 'BLOCK_JOB_READY': 485 self.assertTrue(False, 'job completed unexpectedly') 486 elif event['event'] == 'BLOCK_JOB_COMPLETED': 487 self.assertTrue(error, 'job completed unexpectedly') 488 self.assert_qmp(event, 'data/type', 'mirror') 489 self.assert_qmp(event, 'data/device', 'drive0') 490 self.assert_qmp(event, 'data/error', 'Input/output error') 491 completed = True 492 elif event['event'] == 'JOB_STATUS_CHANGE': 493 self.assert_qmp(event, 'data/id', 'drive0') 494 495 self.assert_no_active_block_jobs() 496 497 def test_ignore_read(self): 498 self.assert_no_active_block_jobs() 499 500 self.vm.cmd('drive-mirror', device='drive0', sync='full', 501 target=target_img, on_source_error='ignore') 502 503 event = self.vm.get_qmp_event(wait=True) 504 while event['event'] == 'JOB_STATUS_CHANGE': 505 self.assert_qmp(event, 'data/id', 'drive0') 506 event = self.vm.get_qmp_event(wait=True) 507 508 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 509 self.assert_qmp(event, 'data/device', 'drive0') 510 self.assert_qmp(event, 'data/operation', 'read') 511 result = self.vm.qmp('query-block-jobs') 512 self.assertIn(result['return'][0]['status'], ['running', 'ready']) 513 self.complete_and_wait() 514 515 def test_large_cluster(self): 516 self.assert_no_active_block_jobs() 517 518 # Test COW into the target image. The first half of the 519 # cluster at MIRROR_GRANULARITY has to be copied from 520 # backing_img, even though sync='top'. 521 qemu_img('create', '-f', iotests.imgfmt, 522 '-ocluster_size=131072,backing_file=%s' %(backing_img), 523 '-F', 'raw', target_img) 524 self.vm.cmd('drive-mirror', device='drive0', sync='top', 525 on_source_error='ignore', 526 mode='existing', target=target_img) 527 528 event = self.vm.get_qmp_event(wait=True) 529 while event['event'] == 'JOB_STATUS_CHANGE': 530 self.assert_qmp(event, 'data/id', 'drive0') 531 event = self.vm.get_qmp_event(wait=True) 532 533 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 534 self.assert_qmp(event, 'data/device', 'drive0') 535 self.assert_qmp(event, 'data/operation', 'read') 536 result = self.vm.qmp('query-block-jobs') 537 self.assertIn(result['return'][0]['status'], ['running', 'ready']) 538 self.complete_and_wait() 539 self.vm.shutdown() 540 541 # Detach blkdebug to compare images successfully 542 qemu_img('rebase', '-f', iotests.imgfmt, '-u', '-b', backing_img, 543 '-F', 'raw', test_img) 544 self.assertTrue(iotests.compare_images(test_img, target_img), 545 'target image does not match source after mirroring') 546 547 def test_stop_read(self): 548 self.assert_no_active_block_jobs() 549 550 self.vm.cmd('drive-mirror', device='drive0', sync='full', 551 target=target_img, on_source_error='stop') 552 553 error = False 554 ready = False 555 while not ready: 556 for event in self.vm.get_qmp_events(wait=True): 557 if event['event'] == 'BLOCK_JOB_ERROR': 558 self.assert_qmp(event, 'data/device', 'drive0') 559 self.assert_qmp(event, 'data/operation', 'read') 560 561 if self.vm.qmp('query-block-jobs')['return'][0]['status'] != 'paused': 562 self.vm.events_wait([( 563 'JOB_STATUS_CHANGE', 564 {'data': {'id': 'drive0', 'status': 'paused'}} 565 )]) 566 567 result = self.vm.qmp('query-block-jobs') 568 self.assert_qmp(result, 'return[0]/status', 'paused') 569 self.assert_qmp(result, 'return[0]/io-status', 'failed') 570 571 self.vm.cmd('block-job-resume', device='drive0') 572 error = True 573 elif event['event'] == 'BLOCK_JOB_READY': 574 self.assertTrue(error, 'job completed unexpectedly') 575 self.assert_qmp(event, 'data/device', 'drive0') 576 ready = True 577 578 result = self.vm.qmp('query-block-jobs') 579 self.assert_qmp(result, 'return[0]/status', 'ready') 580 self.assert_qmp(result, 'return[0]/io-status', 'ok') 581 582 self.complete_and_wait(wait_ready=False) 583 self.assert_no_active_block_jobs() 584 585class TestWriteErrors(iotests.QMPTestCase): 586 image_len = 2 * 1024 * 1024 # MB 587 588 # this should be a multiple of twice the default granularity 589 # so that we hit this offset first in state 1 590 MIRROR_GRANULARITY = 1024 * 1024 591 592 def create_blkdebug_file(self, name, event, errno): 593 file = open(name, 'w') 594 file.write(''' 595[inject-error] 596state = "1" 597event = "%s" 598errno = "%d" 599immediately = "off" 600once = "on" 601sector = "%d" 602 603[set-state] 604state = "1" 605event = "%s" 606new_state = "2" 607 608[set-state] 609state = "2" 610event = "%s" 611new_state = "1" 612''' % (event, errno, self.MIRROR_GRANULARITY // 512, event, event)) 613 file.close() 614 615 def setUp(self): 616 self.blkdebug_file = target_img + ".blkdebug" 617 iotests.create_image(backing_img, TestWriteErrors.image_len) 618 self.create_blkdebug_file(self.blkdebug_file, "write_aio", 5) 619 qemu_img('create', '-f', iotests.imgfmt, 620 '-obacking_file=%s' %(backing_img), '-F', 'raw', test_img) 621 self.vm = iotests.VM().add_drive(test_img) 622 self.target_img = 'blkdebug:%s:%s' % (self.blkdebug_file, target_img) 623 qemu_img('create', '-f', iotests.imgfmt, '-osize=%d' %(TestWriteErrors.image_len), target_img) 624 self.vm.launch() 625 626 def tearDown(self): 627 self.vm.shutdown() 628 os.remove(test_img) 629 os.remove(target_img) 630 os.remove(backing_img) 631 os.remove(self.blkdebug_file) 632 633 def test_report_write(self): 634 self.assert_no_active_block_jobs() 635 636 self.vm.cmd('drive-mirror', device='drive0', sync='full', 637 mode='existing', target=self.target_img) 638 639 completed = False 640 error = False 641 while not completed: 642 for event in self.vm.get_qmp_events(wait=True): 643 if event['event'] == 'BLOCK_JOB_ERROR': 644 self.assert_qmp(event, 'data/device', 'drive0') 645 self.assert_qmp(event, 'data/operation', 'write') 646 error = True 647 elif event['event'] == 'BLOCK_JOB_READY': 648 self.assertTrue(False, 'job completed unexpectedly') 649 elif event['event'] == 'BLOCK_JOB_COMPLETED': 650 self.assertTrue(error, 'job completed unexpectedly') 651 self.assert_qmp(event, 'data/type', 'mirror') 652 self.assert_qmp(event, 'data/device', 'drive0') 653 self.assert_qmp(event, 'data/error', 'Input/output error') 654 completed = True 655 656 self.assert_no_active_block_jobs() 657 658 def test_ignore_write(self): 659 self.assert_no_active_block_jobs() 660 661 self.vm.cmd('drive-mirror', device='drive0', sync='full', 662 mode='existing', target=self.target_img, 663 on_target_error='ignore') 664 665 event = self.vm.event_wait(name='BLOCK_JOB_ERROR') 666 self.assertEqual(event['event'], 'BLOCK_JOB_ERROR') 667 self.assert_qmp(event, 'data/device', 'drive0') 668 self.assert_qmp(event, 'data/operation', 'write') 669 result = self.vm.qmp('query-block-jobs') 670 self.assertIn(result['return'][0]['status'], ['running', 'ready']) 671 self.complete_and_wait() 672 673 def test_stop_write(self): 674 self.assert_no_active_block_jobs() 675 676 self.vm.cmd('drive-mirror', device='drive0', sync='full', 677 mode='existing', target=self.target_img, 678 on_target_error='stop') 679 680 error = False 681 ready = False 682 while not ready: 683 for event in self.vm.get_qmp_events(wait=True): 684 if event['event'] == 'BLOCK_JOB_ERROR': 685 self.assert_qmp(event, 'data/device', 'drive0') 686 self.assert_qmp(event, 'data/operation', 'write') 687 688 if self.vm.qmp('query-block-jobs')['return'][0]['status'] != 'paused': 689 self.vm.events_wait([( 690 'JOB_STATUS_CHANGE', 691 {'data': {'id': 'drive0', 'status': 'paused'}} 692 )]) 693 694 result = self.vm.qmp('query-block-jobs') 695 self.assert_qmp(result, 'return[0]/status', 'paused') 696 self.assert_qmp(result, 'return[0]/io-status', 'failed') 697 698 self.vm.cmd('block-job-resume', device='drive0') 699 700 result = self.vm.qmp('query-block-jobs') 701 self.assertIn(result['return'][0]['status'], ['running', 'ready']) 702 self.assert_qmp(result, 'return[0]/io-status', 'ok') 703 error = True 704 elif event['event'] == 'BLOCK_JOB_READY': 705 self.assertTrue(error, 'job completed unexpectedly') 706 self.assert_qmp(event, 'data/device', 'drive0') 707 ready = True 708 709 self.complete_and_wait(wait_ready=False) 710 self.assert_no_active_block_jobs() 711 712class TestSetSpeed(iotests.QMPTestCase): 713 image_len = 80 * 1024 * 1024 # MB 714 715 def setUp(self): 716 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 717 qemu_img('create', '-f', iotests.imgfmt, 718 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', 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 self.vm.cmd('drive-mirror', device='drive0', sync='full', 732 target=target_img) 733 734 # Default speed is 0 735 result = self.vm.qmp('query-block-jobs') 736 self.assert_qmp(result, 'return[0]/device', 'drive0') 737 self.assert_qmp(result, 'return[0]/speed', 0) 738 739 self.vm.cmd('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024) 740 741 # Ensure the speed we set was accepted 742 result = self.vm.qmp('query-block-jobs') 743 self.assert_qmp(result, 'return[0]/device', 'drive0') 744 self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024) 745 746 self.wait_ready_and_cancel() 747 748 # Check setting speed in drive-mirror works 749 self.vm.cmd('drive-mirror', device='drive0', sync='full', 750 target=target_img, speed=4*1024*1024) 751 752 result = self.vm.qmp('query-block-jobs') 753 self.assert_qmp(result, 'return[0]/device', 'drive0') 754 self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024) 755 756 self.wait_ready_and_cancel() 757 758 def test_set_speed_invalid(self): 759 self.assert_no_active_block_jobs() 760 761 result = self.vm.qmp('drive-mirror', device='drive0', sync='full', 762 target=target_img, speed=-1) 763 self.assert_qmp(result, 'error/class', 'GenericError') 764 765 self.assert_no_active_block_jobs() 766 767 self.vm.cmd('drive-mirror', device='drive0', sync='full', 768 target=target_img) 769 770 result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1) 771 self.assert_qmp(result, 'error/class', 'GenericError') 772 773 self.wait_ready_and_cancel() 774 775class TestUnbackedSource(iotests.QMPTestCase): 776 image_len = 2 * 1024 * 1024 # MB 777 778 def setUp(self): 779 qemu_img('create', '-f', iotests.imgfmt, test_img, 780 str(TestUnbackedSource.image_len)) 781 self.vm = iotests.VM() 782 self.vm.launch() 783 self.vm.cmd('blockdev-add', node_name='drive0', 784 driver=iotests.imgfmt, 785 file={ 786 'driver': 'file', 787 'filename': test_img, 788 }) 789 790 def tearDown(self): 791 self.vm.shutdown() 792 os.remove(test_img) 793 os.remove(target_img) 794 795 def test_absolute_paths_full(self): 796 self.assert_no_active_block_jobs() 797 self.vm.cmd('drive-mirror', job_id='drive0', device='drive0', 798 sync='full', target=target_img, 799 mode='absolute-paths') 800 self.complete_and_wait() 801 self.assert_no_active_block_jobs() 802 803 def test_absolute_paths_top(self): 804 self.assert_no_active_block_jobs() 805 self.vm.cmd('drive-mirror', job_id='drive0', device='drive0', 806 sync='top', target=target_img, 807 mode='absolute-paths') 808 self.complete_and_wait() 809 self.assert_no_active_block_jobs() 810 811 def test_absolute_paths_none(self): 812 self.assert_no_active_block_jobs() 813 self.vm.cmd('drive-mirror', job_id='drive0', device='drive0', 814 sync='none', target=target_img, 815 mode='absolute-paths') 816 self.complete_and_wait() 817 self.assert_no_active_block_jobs() 818 819 def test_existing_full(self): 820 qemu_img('create', '-f', iotests.imgfmt, target_img, 821 str(self.image_len)) 822 qemu_io('-c', 'write -P 42 0 64k', target_img) 823 824 self.assert_no_active_block_jobs() 825 self.vm.cmd('drive-mirror', job_id='drive0', device='drive0', 826 sync='full', target=target_img, mode='existing') 827 self.complete_and_wait() 828 self.assert_no_active_block_jobs() 829 830 self.vm.cmd('blockdev-del', node_name='drive0') 831 832 self.assertTrue(iotests.compare_images(test_img, target_img), 833 'target image does not match source after mirroring') 834 835 def test_blockdev_full(self): 836 qemu_img('create', '-f', iotests.imgfmt, target_img, 837 str(self.image_len)) 838 qemu_io('-c', 'write -P 42 0 64k', target_img) 839 840 self.vm.cmd('blockdev-add', node_name='target', 841 driver=iotests.imgfmt, 842 file={ 843 'driver': 'file', 844 'filename': target_img, 845 }) 846 847 self.assert_no_active_block_jobs() 848 self.vm.cmd('blockdev-mirror', job_id='drive0', device='drive0', 849 sync='full', target='target') 850 self.complete_and_wait() 851 self.assert_no_active_block_jobs() 852 853 self.vm.cmd('blockdev-del', node_name='drive0') 854 855 self.vm.cmd('blockdev-del', node_name='target') 856 857 self.assertTrue(iotests.compare_images(test_img, target_img), 858 'target image does not match source after mirroring') 859 860class TestGranularity(iotests.QMPTestCase): 861 image_len = 10 * 1024 * 1024 # MB 862 863 def setUp(self): 864 qemu_img('create', '-f', iotests.imgfmt, test_img, 865 str(TestGranularity.image_len)) 866 qemu_io('-c', 'write 0 %d' % (self.image_len), 867 test_img) 868 self.vm = iotests.VM().add_drive(test_img) 869 self.vm.launch() 870 871 def tearDown(self): 872 self.vm.shutdown() 873 self.assertTrue(iotests.compare_images(test_img, target_img), 874 'target image does not match source after mirroring') 875 os.remove(test_img) 876 os.remove(target_img) 877 878 def test_granularity(self): 879 self.assert_no_active_block_jobs() 880 self.vm.cmd('drive-mirror', device='drive0', 881 sync='full', target=target_img, 882 mode='absolute-paths', granularity=8192) 883 884 event = self.vm.get_qmp_event(wait=60.0) 885 while event['event'] == 'JOB_STATUS_CHANGE': 886 self.assert_qmp(event, 'data/id', 'drive0') 887 event = self.vm.get_qmp_event(wait=60.0) 888 889 # Failures will manifest as COMPLETED/ERROR. 890 self.assert_qmp(event, 'event', 'BLOCK_JOB_READY') 891 self.complete_and_wait(drive='drive0', wait_ready=False) 892 self.assert_no_active_block_jobs() 893 894class TestRepairQuorum(iotests.QMPTestCase): 895 """ This class test quorum file repair using drive-mirror. 896 It's mostly a fork of TestSingleDrive """ 897 image_len = 1 * 1024 * 1024 # MB 898 IMAGES = [ quorum_img1, quorum_img2, quorum_img3 ] 899 900 @iotests.skip_if_unsupported(['quorum']) 901 def setUp(self): 902 self.vm = iotests.VM() 903 904 if iotests.qemu_default_machine == 'pc': 905 self.vm.add_drive(None, 'media=cdrom', 'ide') 906 907 # Add each individual quorum images 908 for i in self.IMAGES: 909 qemu_img('create', '-f', iotests.imgfmt, i, 910 str(self.image_len)) 911 # Assign a node name to each quorum image in order to manipulate 912 # them 913 opts = "node-name=img%i" % self.IMAGES.index(i) 914 opts += ',driver=%s' % iotests.imgfmt 915 opts += ',file.driver=file' 916 opts += ',file.filename=%s' % i 917 self.vm = self.vm.add_blockdev(opts) 918 919 self.vm.launch() 920 921 #assemble the quorum block device from the individual files 922 args = { "driver": "quorum", "node-name": "quorum0", 923 "vote-threshold": 2, "children": [ "img0", "img1", "img2" ] } 924 self.vm.cmd("blockdev-add", args) 925 926 927 def tearDown(self): 928 self.vm.shutdown() 929 for i in self.IMAGES + [ quorum_repair_img, quorum_snapshot_file, 930 nbd_sock_path ]: 931 # Do a try/except because the test may have deleted some images 932 try: 933 os.remove(i) 934 except OSError: 935 pass 936 937 def test_complete(self): 938 self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', 939 sync='full', node_name="repair0", replaces="img1", 940 target=quorum_repair_img, format=iotests.imgfmt) 941 942 self.complete_and_wait(drive="job0") 943 self.assert_has_block_node("repair0", quorum_repair_img) 944 self.vm.assert_block_path('quorum0', '/children.1', 'repair0') 945 self.vm.shutdown() 946 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 947 'target image does not match source after mirroring') 948 949 def test_cancel(self): 950 self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', 951 sync='full', node_name="repair0", replaces="img1", 952 target=quorum_repair_img, format=iotests.imgfmt) 953 954 self.cancel_and_wait(drive="job0", force=True) 955 # here we check that the last registered quorum file has not been 956 # swapped out and unref 957 self.assert_has_block_node(None, quorum_img3) 958 959 def test_cancel_after_ready(self): 960 self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', 961 sync='full', node_name="repair0", replaces="img1", 962 target=quorum_repair_img, format=iotests.imgfmt) 963 964 self.wait_ready_and_cancel(drive="job0") 965 # here we check that the last registered quorum file has not been 966 # swapped out and unref 967 self.assert_has_block_node(None, quorum_img3) 968 self.vm.shutdown() 969 self.assertTrue(iotests.compare_images(quorum_img2, quorum_repair_img), 970 'target image does not match source after mirroring') 971 972 def test_pause(self): 973 self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', 974 sync='full', node_name="repair0", replaces="img1", 975 target=quorum_repair_img, format=iotests.imgfmt) 976 977 self.pause_job('job0') 978 979 result = self.vm.qmp('query-block-jobs') 980 offset = self.dictpath(result, 'return[0]/offset') 981 982 time.sleep(0.5) 983 result = self.vm.qmp('query-block-jobs') 984 self.assert_qmp(result, 'return[0]/offset', offset) 985 986 self.vm.cmd('block-job-resume', device='job0') 987 988 self.complete_and_wait(drive="job0") 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_medium_not_found(self): 994 if iotests.qemu_default_machine != 'pc': 995 return 996 997 result = self.vm.qmp('drive-mirror', job_id='job0', device='drive0', # CD-ROM 998 sync='full', 999 node_name='repair0', 1000 replaces='img1', 1001 target=quorum_repair_img, format=iotests.imgfmt) 1002 self.assert_qmp(result, 'error/class', 'GenericError') 1003 1004 def test_image_not_found(self): 1005 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1006 sync='full', node_name='repair0', replaces='img1', 1007 mode='existing', target=quorum_repair_img, 1008 format=iotests.imgfmt) 1009 self.assert_qmp(result, 'error/class', 'GenericError') 1010 1011 def test_device_not_found(self): 1012 result = self.vm.qmp('drive-mirror', job_id='job0', 1013 device='nonexistent', sync='full', 1014 node_name='repair0', 1015 replaces='img1', 1016 target=quorum_repair_img, format=iotests.imgfmt) 1017 self.assert_qmp(result, 'error/class', 'GenericError') 1018 1019 def test_wrong_sync_mode(self): 1020 result = self.vm.qmp('drive-mirror', device='quorum0', job_id='job0', 1021 node_name='repair0', 1022 replaces='img1', 1023 target=quorum_repair_img, format=iotests.imgfmt) 1024 self.assert_qmp(result, 'error/class', 'GenericError') 1025 1026 def test_no_node_name(self): 1027 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1028 sync='full', replaces='img1', 1029 target=quorum_repair_img, format=iotests.imgfmt) 1030 self.assert_qmp(result, 'error/class', 'GenericError') 1031 1032 def test_nonexistent_replaces(self): 1033 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1034 sync='full', node_name='repair0', replaces='img77', 1035 target=quorum_repair_img, format=iotests.imgfmt) 1036 self.assert_qmp(result, 'error/class', 'GenericError') 1037 1038 def test_after_a_quorum_snapshot(self): 1039 self.vm.cmd('blockdev-snapshot-sync', node_name='img1', 1040 snapshot_file=quorum_snapshot_file, 1041 snapshot_node_name="snap1") 1042 1043 result = self.vm.qmp('drive-mirror', job_id='job0', device='quorum0', 1044 sync='full', node_name='repair0', replaces="img1", 1045 target=quorum_repair_img, format=iotests.imgfmt) 1046 self.assert_qmp(result, 'error/class', 'GenericError') 1047 1048 self.vm.cmd('drive-mirror', job_id='job0', device='quorum0', 1049 sync='full', node_name='repair0', replaces="snap1", 1050 target=quorum_repair_img, format=iotests.imgfmt) 1051 1052 self.complete_and_wait('job0') 1053 self.assert_has_block_node("repair0", quorum_repair_img) 1054 self.vm.assert_block_path('quorum0', '/children.1', 'repair0') 1055 1056 def test_with_other_parent(self): 1057 """ 1058 Check that we cannot replace a Quorum child when it has other 1059 parents. 1060 """ 1061 self.vm.cmd('nbd-server-start', 1062 addr={ 1063 'type': 'unix', 1064 'data': {'path': nbd_sock_path} 1065 }) 1066 1067 self.vm.cmd('nbd-server-add', device='img1') 1068 1069 result = self.vm.qmp('drive-mirror', job_id='mirror', device='quorum0', 1070 sync='full', node_name='repair0', replaces='img1', 1071 target=quorum_repair_img, format=iotests.imgfmt) 1072 self.assert_qmp(result, 'error/desc', 1073 "Cannot replace 'img1' by a node mirrored from " 1074 "'quorum0', because it cannot be guaranteed that doing " 1075 "so would not lead to an abrupt change of visible data") 1076 1077 def test_with_other_parents_after_mirror_start(self): 1078 """ 1079 The same as test_with_other_parent(), but add the NBD server 1080 only when the mirror job is already running. 1081 """ 1082 self.vm.cmd('nbd-server-start', 1083 addr={ 1084 'type': 'unix', 1085 'data': {'path': nbd_sock_path} 1086 }) 1087 1088 self.vm.cmd('drive-mirror', job_id='mirror', device='quorum0', 1089 sync='full', node_name='repair0', replaces='img1', 1090 target=quorum_repair_img, format=iotests.imgfmt) 1091 1092 self.vm.cmd('nbd-server-add', device='img1') 1093 1094 # The full error message goes to stderr, we will check it later 1095 self.complete_and_wait('mirror', 1096 completion_error='Operation not permitted') 1097 1098 # Should not have been replaced 1099 self.vm.assert_block_path('quorum0', '/children.1', 'img1') 1100 1101 # Check the full error message now 1102 self.vm.shutdown() 1103 log = self.vm.get_log() 1104 log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log) 1105 log = re.sub(r'^Formatting.*\n', '', log) 1106 log = re.sub(r'\n\[I \+\d+\.\d+\] CLOSED\n?$', '', log) 1107 log = re.sub(r'^%s: ' % os.path.basename(iotests.qemu_prog), '', log) 1108 1109 self.assertEqual(log, 1110 "Can no longer replace 'img1' by 'repair0', because " + 1111 "it can no longer be guaranteed that doing so would " + 1112 "not lead to an abrupt change of visible data") 1113 1114 1115# Test mirroring with a source that does not have any parents (not even a 1116# BlockBackend) 1117class TestOrphanedSource(iotests.QMPTestCase): 1118 def setUp(self): 1119 blk0 = { 'node-name': 'src', 1120 'driver': 'null-co' } 1121 1122 blk1 = { 'node-name': 'dest', 1123 'driver': 'null-co' } 1124 1125 blk2 = { 'node-name': 'dest-ro', 1126 'driver': 'null-co', 1127 'read-only': 'on' } 1128 1129 self.vm = iotests.VM() 1130 self.vm.add_blockdev(self.vm.qmp_to_opts(blk0)) 1131 self.vm.add_blockdev(self.vm.qmp_to_opts(blk1)) 1132 self.vm.add_blockdev(self.vm.qmp_to_opts(blk2)) 1133 self.vm.launch() 1134 1135 def tearDown(self): 1136 self.vm.shutdown() 1137 1138 def test_no_job_id(self): 1139 self.assert_no_active_block_jobs() 1140 1141 result = self.vm.qmp('blockdev-mirror', device='src', sync='full', 1142 target='dest') 1143 self.assert_qmp(result, 'error/class', 'GenericError') 1144 1145 def test_success(self): 1146 self.assert_no_active_block_jobs() 1147 1148 self.vm.cmd('blockdev-mirror', job_id='job', device='src', 1149 sync='full', target='dest') 1150 1151 self.complete_and_wait('job') 1152 1153 def test_failing_permissions(self): 1154 self.assert_no_active_block_jobs() 1155 1156 result = self.vm.qmp('blockdev-mirror', device='src', sync='full', 1157 target='dest-ro') 1158 self.assert_qmp(result, 'error/class', 'GenericError') 1159 1160 def test_failing_permission_in_complete(self): 1161 self.assert_no_active_block_jobs() 1162 1163 # Unshare consistent-read on the target 1164 # (The mirror job does not care) 1165 self.vm.cmd('blockdev-add', 1166 driver='blkdebug', 1167 node_name='dest-perm', 1168 image='dest', 1169 unshare_child_perms=['consistent-read']) 1170 1171 self.vm.cmd('blockdev-mirror', job_id='job', device='src', 1172 sync='full', target='dest', 1173 filter_node_name='mirror-filter') 1174 1175 # Require consistent-read on the source 1176 # (We can only add this node once the job has started, or it 1177 # will complain that it does not want to run on non-root nodes) 1178 self.vm.cmd('blockdev-add', 1179 driver='blkdebug', 1180 node_name='src-perm', 1181 image='src', 1182 take_child_perms=['consistent-read']) 1183 1184 # While completing, mirror will attempt to replace src by 1185 # dest, which must fail because src-perm requires 1186 # consistent-read but dest-perm does not share it; thus 1187 # aborting the job when it is supposed to complete 1188 self.complete_and_wait('job', 1189 completion_error='Operation not permitted') 1190 1191 # Assert that all of our nodes are still there (except for the 1192 # mirror filter, which should be gone despite the failure) 1193 nodes = self.vm.qmp('query-named-block-nodes')['return'] 1194 nodes = [node['node-name'] for node in nodes] 1195 1196 for expect in ('src', 'src-perm', 'dest', 'dest-perm'): 1197 self.assertTrue(expect in nodes, '%s disappeared' % expect) 1198 self.assertFalse('mirror-filter' in nodes, 1199 'Mirror filter node did not disappear') 1200 1201# Test cases for @replaces that do not necessarily involve Quorum 1202class TestReplaces(iotests.QMPTestCase): 1203 # Each of these test cases needs their own block graph, so do not 1204 # create any nodes here 1205 def setUp(self): 1206 self.vm = iotests.VM() 1207 self.vm.launch() 1208 1209 def tearDown(self): 1210 self.vm.shutdown() 1211 for img in (test_img, target_img): 1212 try: 1213 os.remove(img) 1214 except OSError: 1215 pass 1216 1217 @iotests.skip_if_unsupported(['copy-on-read']) 1218 def test_replace_filter(self): 1219 """ 1220 Check that we can replace filter nodes. 1221 """ 1222 self.vm.cmd('blockdev-add', { 1223 'driver': 'copy-on-read', 1224 'node-name': 'filter0', 1225 'file': { 1226 'driver': 'copy-on-read', 1227 'node-name': 'filter1', 1228 'file': { 1229 'driver': 'null-co' 1230 } 1231 } 1232 }) 1233 1234 self.vm.cmd('blockdev-add', 1235 node_name='target', driver='null-co') 1236 1237 self.vm.cmd('blockdev-mirror', job_id='mirror', device='filter0', 1238 target='target', sync='full', replaces='filter1') 1239 1240 self.complete_and_wait('mirror') 1241 1242 self.vm.assert_block_path('filter0', '/file', 'target') 1243 1244# Tests for mirror with filters (and how the mirror filter behaves, as 1245# an example for an implicit filter) 1246class TestFilters(iotests.QMPTestCase): 1247 def setUp(self): 1248 qemu_img('create', '-f', iotests.imgfmt, backing_img, '1M') 1249 qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, 1250 '-F', iotests.imgfmt, test_img) 1251 qemu_img('create', '-f', iotests.imgfmt, '-b', backing_img, 1252 '-F', iotests.imgfmt, target_img) 1253 1254 qemu_io('-c', 'write -P 1 0 512k', backing_img) 1255 qemu_io('-c', 'write -P 2 512k 512k', test_img) 1256 1257 self.vm = iotests.VM().add_device('virtio-scsi,id=vio-scsi') 1258 self.vm.launch() 1259 1260 self.vm.cmd('blockdev-add', { 1261 'node-name': 'target', 1262 'driver': iotests.imgfmt, 1263 'file': { 1264 'driver': 'file', 1265 'filename': target_img 1266 }, 1267 'backing': None 1268 }) 1269 1270 self.filterless_chain = { 1271 'node-name': 'source', 1272 'driver': iotests.imgfmt, 1273 'file': { 1274 'driver': 'file', 1275 'filename': test_img 1276 }, 1277 'backing': { 1278 'node-name': 'backing', 1279 'driver': iotests.imgfmt, 1280 'file': { 1281 'driver': 'file', 1282 'filename': backing_img 1283 } 1284 } 1285 } 1286 1287 def tearDown(self): 1288 self.vm.shutdown() 1289 1290 os.remove(test_img) 1291 os.remove(target_img) 1292 os.remove(backing_img) 1293 1294 def test_cor(self): 1295 self.vm.cmd('blockdev-add', { 1296 'node-name': 'filter', 1297 'driver': 'copy-on-read', 1298 'file': self.filterless_chain 1299 }) 1300 1301 self.vm.cmd('blockdev-mirror', 1302 job_id='mirror', 1303 device='filter', 1304 target='target', 1305 sync='top') 1306 1307 self.complete_and_wait('mirror') 1308 1309 self.vm.qmp('blockdev-del', node_name='target') 1310 1311 target_map = qemu_img_map(target_img) 1312 1313 assert target_map[0]['start'] == 0 1314 assert target_map[0]['length'] == 512 * 1024 1315 assert target_map[0]['depth'] == 1 1316 1317 assert target_map[1]['start'] == 512 * 1024 1318 assert target_map[1]['length'] == 512 * 1024 1319 assert target_map[1]['depth'] == 0 1320 1321 def test_implicit_mirror_filter(self): 1322 self.vm.cmd('blockdev-add', self.filterless_chain) 1323 1324 # We need this so we can query from above the mirror node 1325 self.vm.cmd('device_add', 1326 driver='scsi-hd', 1327 id='virtio', 1328 bus='vio-scsi.0', 1329 drive='source') 1330 1331 self.vm.cmd('blockdev-mirror', 1332 job_id='mirror', 1333 device='source', 1334 target='target', 1335 sync='top') 1336 1337 # The mirror filter is now an implicit node, so it should be 1338 # invisible when querying the backing chain 1339 blockdevs = self.vm.qmp('query-block')['return'] 1340 device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio') 1341 1342 assert device_info['inserted']['node-name'] == 'source' 1343 1344 image_info = device_info['inserted']['image'] 1345 assert image_info['filename'] == test_img 1346 assert image_info['backing-image']['filename'] == backing_img 1347 1348 self.complete_and_wait('mirror') 1349 1350 def test_explicit_mirror_filter(self): 1351 # Same test as above, but this time we give the mirror filter 1352 # a node-name so it will not be invisible 1353 self.vm.cmd('blockdev-add', self.filterless_chain) 1354 1355 # We need this so we can query from above the mirror node 1356 self.vm.cmd('device_add', 1357 driver='scsi-hd', 1358 id='virtio', 1359 bus='vio-scsi.0', 1360 drive='source') 1361 1362 self.vm.cmd('blockdev-mirror', 1363 job_id='mirror', 1364 device='source', 1365 target='target', 1366 sync='top', 1367 filter_node_name='mirror-filter') 1368 1369 # With a node-name given to it, the mirror filter should now 1370 # be visible 1371 blockdevs = self.vm.qmp('query-block')['return'] 1372 device_info = next(dev for dev in blockdevs if dev['qdev'] == 'virtio') 1373 1374 assert device_info['inserted']['node-name'] == 'mirror-filter' 1375 1376 self.complete_and_wait('mirror') 1377 1378 1379if __name__ == '__main__': 1380 iotests.main(supported_fmts=['qcow2', 'qed'], 1381 supported_protocols=['file'], 1382 supported_platforms=['linux', 'freebsd', 'netbsd', 'openbsd']) 1383