1#!/usr/bin/env python3 2# group: rw auto 3# 4# Tests for image block commit. 5# 6# Copyright (C) 2012 IBM, Corp. 7# Copyright (C) 2012 Red Hat, Inc. 8# 9# This program is free software; you can redistribute it and/or modify 10# it under the terms of the GNU General Public License as published by 11# the Free Software Foundation; either version 2 of the License, or 12# (at your option) any later version. 13# 14# This program is distributed in the hope that it will be useful, 15# but WITHOUT ANY WARRANTY; without even the implied warranty of 16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17# GNU General Public License for more details. 18# 19# You should have received a copy of the GNU General Public License 20# along with this program. If not, see <http://www.gnu.org/licenses/>. 21# 22# Test for live block commit 23# Derived from Image Streaming Test 030 24 25import time 26import os 27import iotests 28from iotests import qemu_img, qemu_io 29import struct 30import errno 31 32backing_img = os.path.join(iotests.test_dir, 'backing.img') 33mid_img = os.path.join(iotests.test_dir, 'mid.img') 34test_img = os.path.join(iotests.test_dir, 'test.img') 35 36class ImageCommitTestCase(iotests.QMPTestCase): 37 '''Abstract base class for image commit test cases''' 38 39 def wait_for_complete(self, need_ready=False): 40 completed = False 41 ready = False 42 while not completed: 43 for event in self.vm.get_qmp_events(wait=True): 44 if event['event'] == 'BLOCK_JOB_COMPLETED': 45 self.assert_qmp_absent(event, 'data/error') 46 self.assert_qmp(event, 'data/type', 'commit') 47 self.assert_qmp(event, 'data/device', 'drive0') 48 self.assert_qmp(event, 'data/offset', event['data']['len']) 49 if need_ready: 50 self.assertTrue(ready, "Expecting BLOCK_JOB_COMPLETED event") 51 completed = True 52 elif event['event'] == 'BLOCK_JOB_READY': 53 ready = True 54 self.assert_qmp(event, 'data/type', 'commit') 55 self.assert_qmp(event, 'data/device', 'drive0') 56 self.vm.qmp('block-job-complete', device='drive0') 57 58 self.assert_no_active_block_jobs() 59 self.vm.shutdown() 60 61 def run_commit_test(self, top, base, need_ready=False, node_names=False): 62 self.assert_no_active_block_jobs() 63 if node_names: 64 result = self.vm.qmp('block-commit', device='drive0', top_node=top, base_node=base) 65 else: 66 result = self.vm.qmp('block-commit', device='drive0', top=top, base=base) 67 self.assert_qmp(result, 'return', {}) 68 self.wait_for_complete(need_ready) 69 70 def run_default_commit_test(self): 71 self.assert_no_active_block_jobs() 72 result = self.vm.qmp('block-commit', device='drive0') 73 self.assert_qmp(result, 'return', {}) 74 self.wait_for_complete() 75 76class TestSingleDrive(ImageCommitTestCase): 77 # Need some space after the copied data so that throttling is effective in 78 # tests that use it rather than just completing the job immediately 79 image_len = 2 * 1024 * 1024 80 test_len = 1 * 1024 * 256 81 82 def setUp(self): 83 iotests.create_image(backing_img, self.image_len) 84 qemu_img('create', '-f', iotests.imgfmt, 85 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', mid_img) 86 qemu_img('create', '-f', iotests.imgfmt, 87 '-o', 'backing_file=%s' % mid_img, 88 '-F', iotests.imgfmt, test_img) 89 qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', backing_img) 90 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img) 91 self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=mid,backing.backing.node-name=base", interface="none") 92 self.vm.add_device('virtio-scsi') 93 self.vm.add_device("scsi-hd,id=scsi0,drive=drive0") 94 self.vm.launch() 95 self.has_quit = False 96 97 def tearDown(self): 98 self.vm.shutdown(has_quit=self.has_quit) 99 os.remove(test_img) 100 os.remove(mid_img) 101 os.remove(backing_img) 102 103 def test_commit(self): 104 self.run_commit_test(mid_img, backing_img) 105 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) 106 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) 107 108 def test_commit_node(self): 109 self.run_commit_test("mid", "base", node_names=True) 110 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) 111 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) 112 113 @iotests.skip_if_unsupported(['throttle']) 114 def test_commit_with_filter_and_quit(self): 115 result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg') 116 self.assert_qmp(result, 'return', {}) 117 118 # Add a filter outside of the backing chain 119 result = self.vm.qmp('blockdev-add', driver='throttle', node_name='filter', throttle_group='tg', file='mid') 120 self.assert_qmp(result, 'return', {}) 121 122 result = self.vm.qmp('block-commit', device='drive0') 123 self.assert_qmp(result, 'return', {}) 124 125 # Quit immediately, thus forcing a simultaneous cancel of the 126 # block job and a bdrv_drain_all() 127 result = self.vm.qmp('quit') 128 self.assert_qmp(result, 'return', {}) 129 130 self.has_quit = True 131 132 # Same as above, but this time we add the filter after starting the job 133 @iotests.skip_if_unsupported(['throttle']) 134 def test_commit_plus_filter_and_quit(self): 135 result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg') 136 self.assert_qmp(result, 'return', {}) 137 138 result = self.vm.qmp('block-commit', device='drive0') 139 self.assert_qmp(result, 'return', {}) 140 141 # Add a filter outside of the backing chain 142 result = self.vm.qmp('blockdev-add', driver='throttle', node_name='filter', throttle_group='tg', file='mid') 143 self.assert_qmp(result, 'return', {}) 144 145 # Quit immediately, thus forcing a simultaneous cancel of the 146 # block job and a bdrv_drain_all() 147 result = self.vm.qmp('quit') 148 self.assert_qmp(result, 'return', {}) 149 150 self.has_quit = True 151 152 def test_device_not_found(self): 153 result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img) 154 self.assert_qmp(result, 'error/class', 'DeviceNotFound') 155 156 def test_top_same_base(self): 157 self.assert_no_active_block_jobs() 158 result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img) 159 self.assert_qmp(result, 'error/class', 'GenericError') 160 self.assert_qmp(result, 'error/desc', "Can't find '%s' in the backing chain" % backing_img) 161 162 def test_top_invalid(self): 163 self.assert_no_active_block_jobs() 164 result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img) 165 self.assert_qmp(result, 'error/class', 'GenericError') 166 self.assert_qmp(result, 'error/desc', 'Top image file badfile not found') 167 168 def test_base_invalid(self): 169 self.assert_no_active_block_jobs() 170 result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile') 171 self.assert_qmp(result, 'error/class', 'GenericError') 172 self.assert_qmp(result, 'error/desc', "Can't find 'badfile' in the backing chain") 173 174 def test_top_node_invalid(self): 175 self.assert_no_active_block_jobs() 176 result = self.vm.qmp('block-commit', device='drive0', top_node='badfile', base_node='base') 177 self.assert_qmp(result, 'error/class', 'GenericError') 178 self.assert_qmp(result, 'error/desc', "Cannot find device='' nor node-name='badfile'") 179 180 def test_base_node_invalid(self): 181 self.assert_no_active_block_jobs() 182 result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='badfile') 183 self.assert_qmp(result, 'error/class', 'GenericError') 184 self.assert_qmp(result, 'error/desc', "Cannot find device='' nor node-name='badfile'") 185 186 def test_top_path_and_node(self): 187 self.assert_no_active_block_jobs() 188 result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='base', top='%s' % mid_img) 189 self.assert_qmp(result, 'error/class', 'GenericError') 190 self.assert_qmp(result, 'error/desc', "'top-node' and 'top' are mutually exclusive") 191 192 def test_base_path_and_node(self): 193 self.assert_no_active_block_jobs() 194 result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='base', base='%s' % backing_img) 195 self.assert_qmp(result, 'error/class', 'GenericError') 196 self.assert_qmp(result, 'error/desc', "'base-node' and 'base' are mutually exclusive") 197 198 def test_top_is_active(self): 199 self.run_commit_test(test_img, backing_img, need_ready=True) 200 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) 201 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) 202 203 def test_top_is_default_active(self): 204 self.run_default_commit_test() 205 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) 206 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) 207 208 def test_top_and_base_reversed(self): 209 self.assert_no_active_block_jobs() 210 result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img) 211 self.assert_qmp(result, 'error/class', 'GenericError') 212 self.assert_qmp(result, 'error/desc', "Can't find '%s' in the backing chain" % mid_img) 213 214 def test_top_and_base_node_reversed(self): 215 self.assert_no_active_block_jobs() 216 result = self.vm.qmp('block-commit', device='drive0', top_node='base', base_node='top') 217 self.assert_qmp(result, 'error/class', 'GenericError') 218 self.assert_qmp(result, 'error/desc', "'top' is not in this backing file chain") 219 220 def test_top_node_in_wrong_chain(self): 221 self.assert_no_active_block_jobs() 222 223 result = self.vm.qmp('blockdev-add', driver='null-co', node_name='null') 224 self.assert_qmp(result, 'return', {}) 225 226 result = self.vm.qmp('block-commit', device='drive0', top_node='null', base_node='base') 227 self.assert_qmp(result, 'error/class', 'GenericError') 228 self.assert_qmp(result, 'error/desc', "'null' is not in this backing file chain") 229 230 # When the job is running on a BB that is automatically deleted on hot 231 # unplug, the job is cancelled when the device disappears 232 def test_hot_unplug(self): 233 if self.image_len == 0: 234 return 235 236 self.assert_no_active_block_jobs() 237 result = self.vm.qmp('block-commit', device='drive0', top=mid_img, 238 base=backing_img, speed=(self.image_len // 4)) 239 self.assert_qmp(result, 'return', {}) 240 result = self.vm.qmp('device_del', id='scsi0') 241 self.assert_qmp(result, 'return', {}) 242 243 cancelled = False 244 deleted = False 245 while not cancelled or not deleted: 246 for event in self.vm.get_qmp_events(wait=True): 247 if event['event'] == 'DEVICE_DELETED': 248 self.assert_qmp(event, 'data/device', 'scsi0') 249 deleted = True 250 elif event['event'] == 'BLOCK_JOB_CANCELLED': 251 self.assert_qmp(event, 'data/device', 'drive0') 252 cancelled = True 253 elif event['event'] == 'JOB_STATUS_CHANGE': 254 self.assert_qmp(event, 'data/id', 'drive0') 255 else: 256 self.fail("Unexpected event %s" % (event['event'])) 257 258 self.assert_no_active_block_jobs() 259 260 # Tests that the insertion of the commit_top filter node doesn't make a 261 # difference to query-blockstat 262 def test_implicit_node(self): 263 if self.image_len == 0: 264 return 265 266 self.assert_no_active_block_jobs() 267 result = self.vm.qmp('block-commit', device='drive0', top=mid_img, 268 base=backing_img, speed=(self.image_len // 4)) 269 self.assert_qmp(result, 'return', {}) 270 271 result = self.vm.qmp('query-block') 272 self.assert_qmp(result, 'return[0]/inserted/file', test_img) 273 self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) 274 self.assert_qmp(result, 'return[0]/inserted/backing_file', mid_img) 275 self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 2) 276 self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) 277 self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', mid_img) 278 self.assert_qmp(result, 'return[0]/inserted/image/backing-image/backing-image/filename', backing_img) 279 280 result = self.vm.qmp('query-blockstats') 281 self.assert_qmp(result, 'return[0]/node-name', 'top') 282 self.assert_qmp(result, 'return[0]/backing/node-name', 'mid') 283 self.assert_qmp(result, 'return[0]/backing/backing/node-name', 'base') 284 285 self.cancel_and_wait() 286 self.assert_no_active_block_jobs() 287 288class TestRelativePaths(ImageCommitTestCase): 289 image_len = 1 * 1024 * 1024 290 test_len = 1 * 1024 * 256 291 292 dir1 = "dir1" 293 dir2 = "dir2/" 294 dir3 = "dir2/dir3/" 295 296 test_img = os.path.join(iotests.test_dir, dir3, 'test.img') 297 mid_img = "../mid.img" 298 backing_img = "../dir1/backing.img" 299 300 backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img') 301 mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img') 302 303 def setUp(self): 304 try: 305 os.mkdir(os.path.join(iotests.test_dir, self.dir1)) 306 os.mkdir(os.path.join(iotests.test_dir, self.dir2)) 307 os.mkdir(os.path.join(iotests.test_dir, self.dir3)) 308 except OSError as exception: 309 if exception.errno != errno.EEXIST: 310 raise 311 iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len) 312 qemu_img('create', '-f', iotests.imgfmt, 313 '-o', 'backing_file=%s' % self.backing_img_abs, 314 '-F', 'raw', self.mid_img_abs) 315 qemu_img('create', '-f', iotests.imgfmt, 316 '-o', 'backing_file=%s' % self.mid_img_abs, 317 '-F', iotests.imgfmt, self.test_img) 318 qemu_img('rebase', '-u', '-b', self.backing_img, 319 '-F', 'raw', self.mid_img_abs) 320 qemu_img('rebase', '-u', '-b', self.mid_img, 321 '-F', iotests.imgfmt, self.test_img) 322 qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', self.backing_img_abs) 323 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', self.mid_img_abs) 324 self.vm = iotests.VM().add_drive(self.test_img) 325 self.vm.launch() 326 327 def tearDown(self): 328 self.vm.shutdown() 329 os.remove(self.test_img) 330 os.remove(self.mid_img_abs) 331 os.remove(self.backing_img_abs) 332 try: 333 os.rmdir(os.path.join(iotests.test_dir, self.dir1)) 334 os.rmdir(os.path.join(iotests.test_dir, self.dir3)) 335 os.rmdir(os.path.join(iotests.test_dir, self.dir2)) 336 except OSError as exception: 337 if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY: 338 raise 339 340 def test_commit(self): 341 self.run_commit_test(self.mid_img, self.backing_img) 342 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed")) 343 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed")) 344 345 def test_device_not_found(self): 346 result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img) 347 self.assert_qmp(result, 'error/class', 'DeviceNotFound') 348 349 def test_top_same_base(self): 350 self.assert_no_active_block_jobs() 351 result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img) 352 self.assert_qmp(result, 'error/class', 'GenericError') 353 self.assert_qmp(result, 'error/desc', "Can't find '%s' in the backing chain" % self.mid_img) 354 355 def test_top_invalid(self): 356 self.assert_no_active_block_jobs() 357 result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img) 358 self.assert_qmp(result, 'error/class', 'GenericError') 359 self.assert_qmp(result, 'error/desc', 'Top image file badfile not found') 360 361 def test_base_invalid(self): 362 self.assert_no_active_block_jobs() 363 result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile') 364 self.assert_qmp(result, 'error/class', 'GenericError') 365 self.assert_qmp(result, 'error/desc', "Can't find 'badfile' in the backing chain") 366 367 def test_top_is_active(self): 368 self.run_commit_test(self.test_img, self.backing_img) 369 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed")) 370 self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed")) 371 372 def test_top_and_base_reversed(self): 373 self.assert_no_active_block_jobs() 374 result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img) 375 self.assert_qmp(result, 'error/class', 'GenericError') 376 self.assert_qmp(result, 'error/desc', "Can't find '%s' in the backing chain" % self.mid_img) 377 378 379class TestSetSpeed(ImageCommitTestCase): 380 image_len = 80 * 1024 * 1024 # MB 381 382 def setUp(self): 383 qemu_img('create', backing_img, str(TestSetSpeed.image_len)) 384 qemu_img('create', '-f', iotests.imgfmt, 385 '-o', 'backing_file=%s' % backing_img, '-F', 'raw', mid_img) 386 qemu_img('create', '-f', iotests.imgfmt, 387 '-o', 'backing_file=%s' % mid_img, 388 '-F', iotests.imgfmt, test_img) 389 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 0 512', test_img) 390 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img) 391 self.vm = iotests.VM().add_drive('blkdebug::' + test_img) 392 self.vm.launch() 393 394 def tearDown(self): 395 self.vm.shutdown() 396 os.remove(test_img) 397 os.remove(mid_img) 398 os.remove(backing_img) 399 400 def test_set_speed(self): 401 self.assert_no_active_block_jobs() 402 403 self.vm.pause_drive('drive0') 404 result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024) 405 self.assert_qmp(result, 'return', {}) 406 407 # Ensure the speed we set was accepted 408 result = self.vm.qmp('query-block-jobs') 409 self.assert_qmp(result, 'return[0]/device', 'drive0') 410 self.assert_qmp(result, 'return[0]/speed', 1024 * 1024) 411 412 self.cancel_and_wait(resume=True) 413 414class TestActiveZeroLengthImage(TestSingleDrive): 415 image_len = 0 416 417class TestReopenOverlay(ImageCommitTestCase): 418 image_len = 1024 * 1024 419 img0 = os.path.join(iotests.test_dir, '0.img') 420 img1 = os.path.join(iotests.test_dir, '1.img') 421 img2 = os.path.join(iotests.test_dir, '2.img') 422 img3 = os.path.join(iotests.test_dir, '3.img') 423 424 def setUp(self): 425 iotests.create_image(self.img0, self.image_len) 426 qemu_img('create', '-f', iotests.imgfmt, 427 '-o', 'backing_file=%s' % self.img0, '-F', 'raw', self.img1) 428 qemu_img('create', '-f', iotests.imgfmt, 429 '-o', 'backing_file=%s' % self.img1, 430 '-F', iotests.imgfmt, self.img2) 431 qemu_img('create', '-f', iotests.imgfmt, 432 '-o', 'backing_file=%s' % self.img2, 433 '-F', iotests.imgfmt, self.img3) 434 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xab 0 128K', self.img1) 435 self.vm = iotests.VM().add_drive(self.img3) 436 self.vm.launch() 437 438 def tearDown(self): 439 self.vm.shutdown() 440 os.remove(self.img0) 441 os.remove(self.img1) 442 os.remove(self.img2) 443 os.remove(self.img3) 444 445 # This tests what happens when the overlay image of the 'top' node 446 # needs to be reopened in read-write mode in order to update the 447 # backing image string. 448 def test_reopen_overlay(self): 449 self.run_commit_test(self.img1, self.img0) 450 451class TestErrorHandling(iotests.QMPTestCase): 452 image_len = 2 * 1024 * 1024 453 454 def setUp(self): 455 iotests.create_image(backing_img, self.image_len) 456 qemu_img('create', '-f', iotests.imgfmt, 457 '-o', 'backing_file=%s' % backing_img, 458 '-F', 'raw', mid_img) 459 qemu_img('create', '-f', iotests.imgfmt, 460 '-o', 'backing_file=%s' % mid_img, 461 '-F', iotests.imgfmt, test_img) 462 463 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x11 0 512k', mid_img) 464 qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x22 0 512k', test_img) 465 466 self.vm = iotests.VM() 467 self.vm.launch() 468 469 self.blkdebug_file = iotests.file_path("blkdebug.conf") 470 471 def tearDown(self): 472 self.vm.shutdown() 473 os.remove(test_img) 474 os.remove(mid_img) 475 os.remove(backing_img) 476 477 def blockdev_add(self, **kwargs): 478 result = self.vm.qmp('blockdev-add', **kwargs) 479 self.assert_qmp(result, 'return', {}) 480 481 def add_block_nodes(self, base_debug=None, mid_debug=None, top_debug=None): 482 self.blockdev_add(node_name='base-file', driver='file', 483 filename=backing_img) 484 self.blockdev_add(node_name='mid-file', driver='file', 485 filename=mid_img) 486 self.blockdev_add(node_name='top-file', driver='file', 487 filename=test_img) 488 489 if base_debug: 490 self.blockdev_add(node_name='base-dbg', driver='blkdebug', 491 image='base-file', inject_error=base_debug) 492 if mid_debug: 493 self.blockdev_add(node_name='mid-dbg', driver='blkdebug', 494 image='mid-file', inject_error=mid_debug) 495 if top_debug: 496 self.blockdev_add(node_name='top-dbg', driver='blkdebug', 497 image='top-file', inject_error=top_debug) 498 499 self.blockdev_add(node_name='base-fmt', driver='raw', 500 file=('base-dbg' if base_debug else 'base-file')) 501 self.blockdev_add(node_name='mid-fmt', driver=iotests.imgfmt, 502 file=('mid-dbg' if mid_debug else 'mid-file'), 503 backing='base-fmt') 504 self.blockdev_add(node_name='top-fmt', driver=iotests.imgfmt, 505 file=('top-dbg' if top_debug else 'top-file'), 506 backing='mid-fmt') 507 508 def run_job(self, expected_events, error_pauses_job=False): 509 match_device = {'data': {'device': 'job0'}} 510 events = [ 511 ('BLOCK_JOB_COMPLETED', match_device), 512 ('BLOCK_JOB_CANCELLED', match_device), 513 ('BLOCK_JOB_ERROR', match_device), 514 ('BLOCK_JOB_READY', match_device), 515 ] 516 517 completed = False 518 log = [] 519 while not completed: 520 ev = self.vm.events_wait(events, timeout=5.0) 521 if ev['event'] == 'BLOCK_JOB_COMPLETED': 522 completed = True 523 elif ev['event'] == 'BLOCK_JOB_ERROR': 524 if error_pauses_job: 525 result = self.vm.qmp('block-job-resume', device='job0') 526 self.assert_qmp(result, 'return', {}) 527 elif ev['event'] == 'BLOCK_JOB_READY': 528 result = self.vm.qmp('block-job-complete', device='job0') 529 self.assert_qmp(result, 'return', {}) 530 else: 531 self.fail("Unexpected event: %s" % ev) 532 log.append(iotests.filter_qmp_event(ev)) 533 534 self.maxDiff = None 535 self.assertEqual(expected_events, log) 536 537 def event_error(self, op, action): 538 return { 539 'event': 'BLOCK_JOB_ERROR', 540 'data': {'action': action, 'device': 'job0', 'operation': op}, 541 'timestamp': {'microseconds': 'USECS', 'seconds': 'SECS'} 542 } 543 544 def event_ready(self): 545 return { 546 'event': 'BLOCK_JOB_READY', 547 'data': {'device': 'job0', 548 'len': 524288, 549 'offset': 524288, 550 'speed': 0, 551 'type': 'commit'}, 552 'timestamp': {'microseconds': 'USECS', 'seconds': 'SECS'}, 553 } 554 555 def event_completed(self, errmsg=None, active=True): 556 max_len = 524288 if active else self.image_len 557 data = { 558 'device': 'job0', 559 'len': max_len, 560 'offset': 0 if errmsg else max_len, 561 'speed': 0, 562 'type': 'commit' 563 } 564 if errmsg: 565 data['error'] = errmsg 566 567 return { 568 'event': 'BLOCK_JOB_COMPLETED', 569 'data': data, 570 'timestamp': {'microseconds': 'USECS', 'seconds': 'SECS'}, 571 } 572 573 def blkdebug_event(self, event, is_raw=False): 574 if event: 575 return [{ 576 'event': event, 577 'sector': 512 if is_raw else 1024, 578 'once': True, 579 }] 580 return None 581 582 def prepare_and_start_job(self, on_error, active=True, 583 top_event=None, mid_event=None, base_event=None): 584 585 top_debug = self.blkdebug_event(top_event) 586 mid_debug = self.blkdebug_event(mid_event) 587 base_debug = self.blkdebug_event(base_event, True) 588 589 self.add_block_nodes(top_debug=top_debug, mid_debug=mid_debug, 590 base_debug=base_debug) 591 592 result = self.vm.qmp('block-commit', job_id='job0', device='top-fmt', 593 top_node='top-fmt' if active else 'mid-fmt', 594 base_node='mid-fmt' if active else 'base-fmt', 595 on_error=on_error) 596 self.assert_qmp(result, 'return', {}) 597 598 def testActiveReadErrorReport(self): 599 self.prepare_and_start_job('report', top_event='read_aio') 600 self.run_job([ 601 self.event_error('read', 'report'), 602 self.event_completed('Input/output error') 603 ]) 604 605 self.vm.shutdown() 606 self.assertFalse(iotests.compare_images(test_img, mid_img), 607 'target image matches source after error') 608 609 def testActiveReadErrorStop(self): 610 self.prepare_and_start_job('stop', top_event='read_aio') 611 self.run_job([ 612 self.event_error('read', 'stop'), 613 self.event_ready(), 614 self.event_completed() 615 ], error_pauses_job=True) 616 617 self.vm.shutdown() 618 self.assertTrue(iotests.compare_images(test_img, mid_img), 619 'target image does not match source after commit') 620 621 def testActiveReadErrorIgnore(self): 622 self.prepare_and_start_job('ignore', top_event='read_aio') 623 self.run_job([ 624 self.event_error('read', 'ignore'), 625 self.event_ready(), 626 self.event_completed() 627 ]) 628 629 # For commit, 'ignore' actually means retry, so this will succeed 630 self.vm.shutdown() 631 self.assertTrue(iotests.compare_images(test_img, mid_img), 632 'target image does not match source after commit') 633 634 def testActiveWriteErrorReport(self): 635 self.prepare_and_start_job('report', mid_event='write_aio') 636 self.run_job([ 637 self.event_error('write', 'report'), 638 self.event_completed('Input/output error') 639 ]) 640 641 self.vm.shutdown() 642 self.assertFalse(iotests.compare_images(test_img, mid_img), 643 'target image matches source after error') 644 645 def testActiveWriteErrorStop(self): 646 self.prepare_and_start_job('stop', mid_event='write_aio') 647 self.run_job([ 648 self.event_error('write', 'stop'), 649 self.event_ready(), 650 self.event_completed() 651 ], error_pauses_job=True) 652 653 self.vm.shutdown() 654 self.assertTrue(iotests.compare_images(test_img, mid_img), 655 'target image does not match source after commit') 656 657 def testActiveWriteErrorIgnore(self): 658 self.prepare_and_start_job('ignore', mid_event='write_aio') 659 self.run_job([ 660 self.event_error('write', 'ignore'), 661 self.event_ready(), 662 self.event_completed() 663 ]) 664 665 # For commit, 'ignore' actually means retry, so this will succeed 666 self.vm.shutdown() 667 self.assertTrue(iotests.compare_images(test_img, mid_img), 668 'target image does not match source after commit') 669 670 def testIntermediateReadErrorReport(self): 671 self.prepare_and_start_job('report', active=False, mid_event='read_aio') 672 self.run_job([ 673 self.event_error('read', 'report'), 674 self.event_completed('Input/output error', active=False) 675 ]) 676 677 self.vm.shutdown() 678 self.assertFalse(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 679 'target image matches source after error') 680 681 def testIntermediateReadErrorStop(self): 682 self.prepare_and_start_job('stop', active=False, mid_event='read_aio') 683 self.run_job([ 684 self.event_error('read', 'stop'), 685 self.event_completed(active=False) 686 ], error_pauses_job=True) 687 688 self.vm.shutdown() 689 self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 690 'target image does not match source after commit') 691 692 def testIntermediateReadErrorIgnore(self): 693 self.prepare_and_start_job('ignore', active=False, mid_event='read_aio') 694 self.run_job([ 695 self.event_error('read', 'ignore'), 696 self.event_completed(active=False) 697 ]) 698 699 # For commit, 'ignore' actually means retry, so this will succeed 700 self.vm.shutdown() 701 self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 702 'target image does not match source after commit') 703 704 def testIntermediateWriteErrorReport(self): 705 self.prepare_and_start_job('report', active=False, base_event='write_aio') 706 self.run_job([ 707 self.event_error('write', 'report'), 708 self.event_completed('Input/output error', active=False) 709 ]) 710 711 self.vm.shutdown() 712 self.assertFalse(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 713 'target image matches source after error') 714 715 def testIntermediateWriteErrorStop(self): 716 self.prepare_and_start_job('stop', active=False, base_event='write_aio') 717 self.run_job([ 718 self.event_error('write', 'stop'), 719 self.event_completed(active=False) 720 ], error_pauses_job=True) 721 722 self.vm.shutdown() 723 self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 724 'target image does not match source after commit') 725 726 def testIntermediateWriteErrorIgnore(self): 727 self.prepare_and_start_job('ignore', active=False, base_event='write_aio') 728 self.run_job([ 729 self.event_error('write', 'ignore'), 730 self.event_completed(active=False) 731 ]) 732 733 # For commit, 'ignore' actually means retry, so this will succeed 734 self.vm.shutdown() 735 self.assertTrue(iotests.compare_images(mid_img, backing_img, fmt2='raw'), 736 'target image does not match source after commit') 737 738class TestCommitWithFilters(iotests.QMPTestCase): 739 img0 = os.path.join(iotests.test_dir, '0.img') 740 img1 = os.path.join(iotests.test_dir, '1.img') 741 img2 = os.path.join(iotests.test_dir, '2.img') 742 img3 = os.path.join(iotests.test_dir, '3.img') 743 744 def do_test_io(self, read_or_write): 745 for index, pattern_file in enumerate(self.pattern_files): 746 result = qemu_io('-f', iotests.imgfmt, 747 '-c', 748 f'{read_or_write} -P {index + 1} {index}M 1M', 749 pattern_file) 750 self.assertFalse('Pattern verification failed' in result) 751 752 def setUp(self): 753 qemu_img('create', '-f', iotests.imgfmt, self.img0, '64M') 754 qemu_img('create', '-f', iotests.imgfmt, self.img1, '64M') 755 qemu_img('create', '-f', iotests.imgfmt, self.img2, '64M') 756 qemu_img('create', '-f', iotests.imgfmt, self.img3, '64M') 757 758 # Distributions of the patterns in the files; this is checked 759 # by tearDown() and should be changed by the test cases as is 760 # necessary 761 self.pattern_files = [self.img0, self.img1, self.img2, self.img3] 762 763 self.do_test_io('write') 764 765 self.vm = iotests.VM().add_device('virtio-scsi,id=vio-scsi') 766 self.vm.launch() 767 768 result = self.vm.qmp('object-add', qom_type='throttle-group', id='tg') 769 self.assert_qmp(result, 'return', {}) 770 771 result = self.vm.qmp('blockdev-add', **{ 772 'node-name': 'top-filter', 773 'driver': 'throttle', 774 'throttle-group': 'tg', 775 'file': { 776 'node-name': 'cow-3', 777 'driver': iotests.imgfmt, 778 'file': { 779 'driver': 'file', 780 'filename': self.img3 781 }, 782 'backing': { 783 'node-name': 'cow-2', 784 'driver': iotests.imgfmt, 785 'file': { 786 'driver': 'file', 787 'filename': self.img2 788 }, 789 'backing': { 790 'node-name': 'cow-1', 791 'driver': iotests.imgfmt, 792 'file': { 793 'driver': 'file', 794 'filename': self.img1 795 }, 796 'backing': { 797 'node-name': 'bottom-filter', 798 'driver': 'throttle', 799 'throttle-group': 'tg', 800 'file': { 801 'node-name': 'cow-0', 802 'driver': iotests.imgfmt, 803 'file': { 804 'driver': 'file', 805 'filename': self.img0 806 } 807 } 808 } 809 } 810 } 811 } 812 }) 813 self.assert_qmp(result, 'return', {}) 814 815 def tearDown(self): 816 self.vm.shutdown() 817 self.do_test_io('read') 818 819 os.remove(self.img3) 820 os.remove(self.img2) 821 os.remove(self.img1) 822 os.remove(self.img0) 823 824 # Filters make for funny filenames, so we cannot just use 825 # self.imgX to get them 826 def get_filename(self, node): 827 return self.vm.node_info(node)['image']['filename'] 828 829 def test_filterless_commit(self): 830 result = self.vm.qmp('block-commit', 831 job_id='commit', 832 device='top-filter', 833 top_node='cow-2', 834 base_node='cow-1') 835 self.assert_qmp(result, 'return', {}) 836 self.wait_until_completed(drive='commit') 837 838 self.assertIsNotNone(self.vm.node_info('cow-3')) 839 self.assertIsNone(self.vm.node_info('cow-2')) 840 self.assertIsNotNone(self.vm.node_info('cow-1')) 841 842 # 2 has been comitted into 1 843 self.pattern_files[2] = self.img1 844 845 def test_commit_through_filter(self): 846 result = self.vm.qmp('block-commit', 847 job_id='commit', 848 device='top-filter', 849 top_node='cow-1', 850 base_node='cow-0') 851 self.assert_qmp(result, 'return', {}) 852 self.wait_until_completed(drive='commit') 853 854 self.assertIsNotNone(self.vm.node_info('cow-2')) 855 self.assertIsNone(self.vm.node_info('cow-1')) 856 self.assertIsNone(self.vm.node_info('bottom-filter')) 857 self.assertIsNotNone(self.vm.node_info('cow-0')) 858 859 # 1 has been comitted into 0 860 self.pattern_files[1] = self.img0 861 862 def test_filtered_active_commit_with_filter(self): 863 # Add a device, so the commit job finds a parent it can change 864 # to point to the base node (so we can test that top-filter is 865 # dropped from the graph) 866 result = self.vm.qmp('device_add', id='drv0', driver='scsi-hd', 867 bus='vio-scsi.0', drive='top-filter') 868 self.assert_qmp(result, 'return', {}) 869 870 # Try to release our reference to top-filter; that should not 871 # work because drv0 uses it 872 result = self.vm.qmp('blockdev-del', node_name='top-filter') 873 self.assert_qmp(result, 'error/class', 'GenericError') 874 self.assert_qmp(result, 'error/desc', 'Node top-filter is in use') 875 876 result = self.vm.qmp('block-commit', 877 job_id='commit', 878 device='top-filter', 879 base_node='cow-2') 880 self.assert_qmp(result, 'return', {}) 881 self.complete_and_wait(drive='commit') 882 883 # Try to release our reference to top-filter again 884 result = self.vm.qmp('blockdev-del', node_name='top-filter') 885 self.assert_qmp(result, 'return', {}) 886 887 self.assertIsNone(self.vm.node_info('top-filter')) 888 self.assertIsNone(self.vm.node_info('cow-3')) 889 self.assertIsNotNone(self.vm.node_info('cow-2')) 890 891 # Check that drv0 is now connected to cow-2 892 blockdevs = self.vm.qmp('query-block')['return'] 893 drv0 = next(dev for dev in blockdevs if dev['qdev'] == 'drv0') 894 self.assertEqual(drv0['inserted']['node-name'], 'cow-2') 895 896 # 3 has been comitted into 2 897 self.pattern_files[3] = self.img2 898 899 def test_filtered_active_commit_without_filter(self): 900 result = self.vm.qmp('block-commit', 901 job_id='commit', 902 device='top-filter', 903 top_node='cow-3', 904 base_node='cow-2') 905 self.assert_qmp(result, 'return', {}) 906 self.complete_and_wait(drive='commit') 907 908 self.assertIsNotNone(self.vm.node_info('top-filter')) 909 self.assertIsNone(self.vm.node_info('cow-3')) 910 self.assertIsNotNone(self.vm.node_info('cow-2')) 911 912 # 3 has been comitted into 2 913 self.pattern_files[3] = self.img2 914 915class TestCommitWithOverriddenBacking(iotests.QMPTestCase): 916 img_base_a = os.path.join(iotests.test_dir, 'base_a.img') 917 img_base_b = os.path.join(iotests.test_dir, 'base_b.img') 918 img_top = os.path.join(iotests.test_dir, 'top.img') 919 920 def setUp(self): 921 qemu_img('create', '-f', iotests.imgfmt, self.img_base_a, '1M') 922 qemu_img('create', '-f', iotests.imgfmt, self.img_base_b, '1M') 923 qemu_img('create', '-f', iotests.imgfmt, '-b', self.img_base_a, 924 '-F', iotests.imgfmt, self.img_top) 925 926 self.vm = iotests.VM() 927 self.vm.launch() 928 929 # Use base_b instead of base_a as the backing of top 930 result = self.vm.qmp('blockdev-add', **{ 931 'node-name': 'top', 932 'driver': iotests.imgfmt, 933 'file': { 934 'driver': 'file', 935 'filename': self.img_top 936 }, 937 'backing': { 938 'node-name': 'base', 939 'driver': iotests.imgfmt, 940 'file': { 941 'driver': 'file', 942 'filename': self.img_base_b 943 } 944 } 945 }) 946 self.assert_qmp(result, 'return', {}) 947 948 def tearDown(self): 949 self.vm.shutdown() 950 os.remove(self.img_top) 951 os.remove(self.img_base_a) 952 os.remove(self.img_base_b) 953 954 def test_commit_to_a(self): 955 # Try committing to base_a (which should fail, as top's 956 # backing image is base_b instead) 957 result = self.vm.qmp('block-commit', 958 job_id='commit', 959 device='top', 960 base=self.img_base_a) 961 self.assert_qmp(result, 'error/class', 'GenericError') 962 963 def test_commit_to_b(self): 964 # Try committing to base_b (which should work, since that is 965 # actually top's backing image) 966 result = self.vm.qmp('block-commit', 967 job_id='commit', 968 device='top', 969 base=self.img_base_b) 970 self.assert_qmp(result, 'return', {}) 971 972 self.vm.event_wait('BLOCK_JOB_READY') 973 self.vm.qmp('block-job-complete', device='commit') 974 self.vm.event_wait('BLOCK_JOB_COMPLETED') 975 976if __name__ == '__main__': 977 iotests.main(supported_fmts=['qcow2', 'qed'], 978 supported_protocols=['file']) 979