| 1 | #!/usr/bin/env python3 |
| 2 | # group: migration |
| 3 | # |
| 4 | # Copyright (C) 2020 Red Hat, Inc. |
| 5 | # |
| 6 | # Tests for dirty bitmaps migration with node aliases |
| 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 | |
| 22 | import os |
| 23 | import random |
| 24 | import re |
| 25 | from typing import Dict, List, Optional |
| 26 | |
| 27 | import iotests |
| 28 | |
| 29 | |
| 30 | BlockBitmapMapping = List[Dict[str, object]] |
| 31 | |
| 32 | mig_sock = os.path.join(iotests.sock_dir, 'mig_sock') |
| 33 | |
| 34 | |
| 35 | class TestDirtyBitmapMigration(iotests.QMPTestCase): |
| 36 | src_node_name: str = '' |
| 37 | dst_node_name: str = '' |
| 38 | src_bmap_name: str = '' |
| 39 | dst_bmap_name: str = '' |
| 40 | |
| 41 | def setUp(self) -> None: |
| 42 | self.vm_a = iotests.VM(path_suffix='-a') |
| 43 | self.vm_a.add_blockdev(f'node-name={self.src_node_name},' |
| 44 | 'driver=null-co') |
| 45 | self.vm_a.launch() |
| 46 | |
| 47 | self.vm_b = iotests.VM(path_suffix='-b') |
| 48 | self.vm_b.add_blockdev(f'node-name={self.dst_node_name},' |
| 49 | 'driver=null-co') |
| 50 | self.vm_b.add_incoming(f'unix:{mig_sock}') |
| 51 | self.vm_b.launch() |
| 52 | |
| 53 | self.vm_a.cmd('block-dirty-bitmap-add', |
| 54 | node=self.src_node_name, |
| 55 | name=self.src_bmap_name) |
| 56 | |
| 57 | # Dirty some random megabytes |
| 58 | for _ in range(9): |
| 59 | mb_ofs = random.randrange(1024) |
| 60 | self.vm_a.hmp_qemu_io(self.src_node_name, f'discard {mb_ofs}M 1M') |
| 61 | |
| 62 | result = self.vm_a.qmp('x-debug-block-dirty-bitmap-sha256', |
| 63 | node=self.src_node_name, |
| 64 | name=self.src_bmap_name) |
| 65 | self.bitmap_hash_reference = result['return']['sha256'] |
| 66 | |
| 67 | caps = [{'capability': name, 'state': True} |
| 68 | for name in ('dirty-bitmaps', 'events')] |
| 69 | |
| 70 | for vm in (self.vm_a, self.vm_b): |
| 71 | vm.cmd('migrate-set-capabilities', capabilities=caps) |
| 72 | |
| 73 | def tearDown(self) -> None: |
| 74 | self.vm_a.shutdown() |
| 75 | self.vm_b.shutdown() |
| 76 | try: |
| 77 | os.remove(mig_sock) |
| 78 | except OSError: |
| 79 | pass |
| 80 | |
| 81 | def check_bitmap(self, bitmap_name_valid: bool) -> None: |
| 82 | result = self.vm_b.qmp('x-debug-block-dirty-bitmap-sha256', |
| 83 | node=self.dst_node_name, |
| 84 | name=self.dst_bmap_name) |
| 85 | if bitmap_name_valid: |
| 86 | self.assert_qmp(result, 'return/sha256', |
| 87 | self.bitmap_hash_reference) |
| 88 | else: |
| 89 | self.assert_qmp(result, 'error/desc', |
| 90 | f"Dirty bitmap '{self.dst_bmap_name}' not found") |
| 91 | |
| 92 | def migrate(self, bitmap_name_valid: bool = True, |
| 93 | migration_success: bool = True) -> None: |
| 94 | self.vm_a.cmd('migrate', uri=f'unix:{mig_sock}') |
| 95 | |
| 96 | with iotests.Timeout(5, 'Timeout waiting for migration to complete'): |
| 97 | self.assertEqual(self.vm_a.wait_migration('postmigrate'), |
| 98 | migration_success) |
| 99 | self.assertEqual(self.vm_b.wait_migration('running'), |
| 100 | migration_success) |
| 101 | |
| 102 | if migration_success: |
| 103 | self.check_bitmap(bitmap_name_valid) |
| 104 | |
| 105 | def verify_dest_error(self, msg: Optional[str]) -> None: |
| 106 | """ |
| 107 | Check whether the given error message is present in vm_b's log. |
| 108 | (vm_b is shut down to do so.) |
| 109 | If @msg is None, check that there has not been any error. |
| 110 | """ |
| 111 | self.vm_b.shutdown() |
| 112 | |
| 113 | log = self.vm_b.get_log() |
| 114 | assert log is not None # Loaded after shutdown |
| 115 | |
| 116 | if msg is None: |
| 117 | self.assertNotIn('qemu-system-', log) |
| 118 | else: |
| 119 | self.assertIn(msg, log) |
| 120 | |
| 121 | @staticmethod |
| 122 | def mapping(node_name: str, node_alias: str, |
| 123 | bitmap_name: str, bitmap_alias: str) -> BlockBitmapMapping: |
| 124 | return [{ |
| 125 | 'node-name': node_name, |
| 126 | 'alias': node_alias, |
| 127 | 'bitmaps': [{ |
| 128 | 'name': bitmap_name, |
| 129 | 'alias': bitmap_alias |
| 130 | }] |
| 131 | }] |
| 132 | |
| 133 | def set_mapping(self, vm: iotests.VM, mapping: BlockBitmapMapping, |
| 134 | error: Optional[str] = None) -> None: |
| 135 | """ |
| 136 | Invoke migrate-set-parameters on @vm to set the given @mapping. |
| 137 | Check for success if @error is None, or verify the error message |
| 138 | if it is not. |
| 139 | On success, verify that "info migrate_parameters" on HMP returns |
| 140 | our mapping. (Just to check its formatting code.) |
| 141 | """ |
| 142 | result = vm.qmp('migrate-set-parameters', |
| 143 | block_bitmap_mapping=mapping) |
| 144 | |
| 145 | if error is None: |
| 146 | self.assert_qmp(result, 'return', {}) |
| 147 | |
| 148 | result = vm.qmp('human-monitor-command', |
| 149 | command_line='info migrate_parameters') |
| 150 | |
| 151 | m = re.search(r'^block-bitmap-mapping:\r?(\n .*)*\n', |
| 152 | result['return'], flags=re.MULTILINE) |
| 153 | hmp_mapping = m.group(0).replace('\r', '') if m else None |
| 154 | |
| 155 | self.assertEqual(hmp_mapping, self.to_hmp_mapping(mapping)) |
| 156 | else: |
| 157 | self.assert_qmp(result, 'error/desc', error) |
| 158 | |
| 159 | @staticmethod |
| 160 | def to_hmp_mapping(mapping: BlockBitmapMapping) -> str: |
| 161 | result = 'block-bitmap-mapping:\n' |
| 162 | |
| 163 | for node in mapping: |
| 164 | result += f" '{node['node-name']}' -> '{node['alias']}'\n" |
| 165 | |
| 166 | assert isinstance(node['bitmaps'], list) |
| 167 | for bitmap in node['bitmaps']: |
| 168 | result += f" '{bitmap['name']}' -> '{bitmap['alias']}'\n" |
| 169 | |
| 170 | return result |
| 171 | |
| 172 | |
| 173 | class TestAliasMigration(TestDirtyBitmapMigration): |
| 174 | src_node_name = 'node0' |
| 175 | dst_node_name = 'node0' |
| 176 | src_bmap_name = 'bmap0' |
| 177 | dst_bmap_name = 'bmap0' |
| 178 | |
| 179 | def test_migration_without_alias(self) -> None: |
| 180 | self.migrate(self.src_node_name == self.dst_node_name and |
| 181 | self.src_bmap_name == self.dst_bmap_name) |
| 182 | |
| 183 | # Check for error message on the destination |
| 184 | if self.src_node_name != self.dst_node_name: |
| 185 | self.verify_dest_error(f"Cannot find " |
| 186 | f"device='{self.src_node_name}' nor " |
| 187 | f"node-name='{self.src_node_name}'") |
| 188 | else: |
| 189 | self.verify_dest_error(None) |
| 190 | |
| 191 | def test_alias_on_src_migration(self) -> None: |
| 192 | mapping = self.mapping(self.src_node_name, self.dst_node_name, |
| 193 | self.src_bmap_name, self.dst_bmap_name) |
| 194 | |
| 195 | self.set_mapping(self.vm_a, mapping) |
| 196 | self.migrate() |
| 197 | self.verify_dest_error(None) |
| 198 | |
| 199 | def test_alias_on_dst_migration(self) -> None: |
| 200 | mapping = self.mapping(self.dst_node_name, self.src_node_name, |
| 201 | self.dst_bmap_name, self.src_bmap_name) |
| 202 | |
| 203 | self.set_mapping(self.vm_b, mapping) |
| 204 | self.migrate() |
| 205 | self.verify_dest_error(None) |
| 206 | |
| 207 | def test_alias_on_both_migration(self) -> None: |
| 208 | src_map = self.mapping(self.src_node_name, 'node-alias', |
| 209 | self.src_bmap_name, 'bmap-alias') |
| 210 | |
| 211 | dst_map = self.mapping(self.dst_node_name, 'node-alias', |
| 212 | self.dst_bmap_name, 'bmap-alias') |
| 213 | |
| 214 | self.set_mapping(self.vm_a, src_map) |
| 215 | self.set_mapping(self.vm_b, dst_map) |
| 216 | self.migrate() |
| 217 | self.verify_dest_error(None) |
| 218 | |
| 219 | |
| 220 | class TestNodeAliasMigration(TestAliasMigration): |
| 221 | src_node_name = 'node-src' |
| 222 | dst_node_name = 'node-dst' |
| 223 | |
| 224 | |
| 225 | class TestBitmapAliasMigration(TestAliasMigration): |
| 226 | src_bmap_name = 'bmap-src' |
| 227 | dst_bmap_name = 'bmap-dst' |
| 228 | |
| 229 | |
| 230 | class TestFullAliasMigration(TestAliasMigration): |
| 231 | src_node_name = 'node-src' |
| 232 | dst_node_name = 'node-dst' |
| 233 | src_bmap_name = 'bmap-src' |
| 234 | dst_bmap_name = 'bmap-dst' |
| 235 | |
| 236 | |
| 237 | class TestLongBitmapNames(TestAliasMigration): |
| 238 | # Giving long bitmap names is OK, as long as there is a short alias for |
| 239 | # migration |
| 240 | src_bmap_name = 'a' * 512 |
| 241 | dst_bmap_name = 'b' * 512 |
| 242 | |
| 243 | # Skip all tests that do not use the intermediate alias |
| 244 | def test_migration_without_alias(self) -> None: |
| 245 | pass |
| 246 | |
| 247 | def test_alias_on_src_migration(self) -> None: |
| 248 | pass |
| 249 | |
| 250 | def test_alias_on_dst_migration(self) -> None: |
| 251 | pass |
| 252 | |
| 253 | |
| 254 | class TestBlockBitmapMappingErrors(TestDirtyBitmapMigration): |
| 255 | src_node_name = 'node0' |
| 256 | dst_node_name = 'node0' |
| 257 | src_bmap_name = 'bmap0' |
| 258 | dst_bmap_name = 'bmap0' |
| 259 | |
| 260 | """ |
| 261 | Note that mapping nodes or bitmaps that do not exist is not an error. |
| 262 | """ |
| 263 | |
| 264 | def test_non_injective_node_mapping(self) -> None: |
| 265 | mapping: BlockBitmapMapping = [ |
| 266 | { |
| 267 | 'node-name': 'node0', |
| 268 | 'alias': 'common-alias', |
| 269 | 'bitmaps': [{ |
| 270 | 'name': 'bmap0', |
| 271 | 'alias': 'bmap-alias0' |
| 272 | }] |
| 273 | }, |
| 274 | { |
| 275 | 'node-name': 'node1', |
| 276 | 'alias': 'common-alias', |
| 277 | 'bitmaps': [{ |
| 278 | 'name': 'bmap1', |
| 279 | 'alias': 'bmap-alias1' |
| 280 | }] |
| 281 | } |
| 282 | ] |
| 283 | |
| 284 | self.set_mapping(self.vm_a, mapping, |
| 285 | "Invalid mapping given for block-bitmap-mapping: " |
| 286 | "The node alias 'common-alias' is used twice") |
| 287 | |
| 288 | def test_non_injective_bitmap_mapping(self) -> None: |
| 289 | mapping: BlockBitmapMapping = [{ |
| 290 | 'node-name': 'node0', |
| 291 | 'alias': 'node-alias0', |
| 292 | 'bitmaps': [ |
| 293 | { |
| 294 | 'name': 'bmap0', |
| 295 | 'alias': 'common-alias' |
| 296 | }, |
| 297 | { |
| 298 | 'name': 'bmap1', |
| 299 | 'alias': 'common-alias' |
| 300 | } |
| 301 | ] |
| 302 | }] |
| 303 | |
| 304 | self.set_mapping(self.vm_a, mapping, |
| 305 | "Invalid mapping given for block-bitmap-mapping: " |
| 306 | "The bitmap alias 'node-alias0'/'common-alias' is " |
| 307 | "used twice") |
| 308 | |
| 309 | def test_ambiguous_node_mapping(self) -> None: |
| 310 | mapping: BlockBitmapMapping = [ |
| 311 | { |
| 312 | 'node-name': 'node0', |
| 313 | 'alias': 'node-alias0', |
| 314 | 'bitmaps': [{ |
| 315 | 'name': 'bmap0', |
| 316 | 'alias': 'bmap-alias0' |
| 317 | }] |
| 318 | }, |
| 319 | { |
| 320 | 'node-name': 'node0', |
| 321 | 'alias': 'node-alias1', |
| 322 | 'bitmaps': [{ |
| 323 | 'name': 'bmap0', |
| 324 | 'alias': 'bmap-alias0' |
| 325 | }] |
| 326 | } |
| 327 | ] |
| 328 | |
| 329 | self.set_mapping(self.vm_a, mapping, |
| 330 | "Invalid mapping given for block-bitmap-mapping: " |
| 331 | "The node name 'node0' is mapped twice") |
| 332 | |
| 333 | def test_ambiguous_bitmap_mapping(self) -> None: |
| 334 | mapping: BlockBitmapMapping = [{ |
| 335 | 'node-name': 'node0', |
| 336 | 'alias': 'node-alias0', |
| 337 | 'bitmaps': [ |
| 338 | { |
| 339 | 'name': 'bmap0', |
| 340 | 'alias': 'bmap-alias0' |
| 341 | }, |
| 342 | { |
| 343 | 'name': 'bmap0', |
| 344 | 'alias': 'bmap-alias1' |
| 345 | } |
| 346 | ] |
| 347 | }] |
| 348 | |
| 349 | self.set_mapping(self.vm_a, mapping, |
| 350 | "Invalid mapping given for block-bitmap-mapping: " |
| 351 | "The bitmap 'node0'/'bmap0' is mapped twice") |
| 352 | |
| 353 | def test_migratee_node_is_not_mapped_on_src(self) -> None: |
| 354 | self.set_mapping(self.vm_a, []) |
| 355 | # Should just ignore all bitmaps on unmapped nodes |
| 356 | self.migrate(False) |
| 357 | self.verify_dest_error(None) |
| 358 | |
| 359 | def test_migratee_node_is_not_mapped_on_dst(self) -> None: |
| 360 | self.set_mapping(self.vm_b, []) |
| 361 | self.migrate(False) |
| 362 | self.verify_dest_error(f"Unknown node alias '{self.src_node_name}'") |
| 363 | |
| 364 | def test_migratee_bitmap_is_not_mapped_on_src(self) -> None: |
| 365 | mapping: BlockBitmapMapping = [{ |
| 366 | 'node-name': self.src_node_name, |
| 367 | 'alias': self.dst_node_name, |
| 368 | 'bitmaps': [] |
| 369 | }] |
| 370 | |
| 371 | self.set_mapping(self.vm_a, mapping) |
| 372 | # Should just ignore all unmapped bitmaps |
| 373 | self.migrate(False) |
| 374 | self.verify_dest_error(None) |
| 375 | |
| 376 | def test_migratee_bitmap_is_not_mapped_on_dst(self) -> None: |
| 377 | mapping: BlockBitmapMapping = [{ |
| 378 | 'node-name': self.dst_node_name, |
| 379 | 'alias': self.src_node_name, |
| 380 | 'bitmaps': [] |
| 381 | }] |
| 382 | |
| 383 | self.set_mapping(self.vm_b, mapping) |
| 384 | self.migrate(False) |
| 385 | self.verify_dest_error(f"Unknown bitmap alias " |
| 386 | f"'{self.src_bmap_name}' " |
| 387 | f"on node '{self.dst_node_name}' " |
| 388 | f"(alias '{self.src_node_name}')") |
| 389 | |
| 390 | def test_unused_mapping_on_dst(self) -> None: |
| 391 | # Let the source not send any bitmaps |
| 392 | self.set_mapping(self.vm_a, []) |
| 393 | |
| 394 | # Establish some mapping on the destination |
| 395 | self.set_mapping(self.vm_b, []) |
| 396 | |
| 397 | # The fact that there is a mapping on B without any bitmaps |
| 398 | # being received should be fine, not fatal |
| 399 | self.migrate(False) |
| 400 | self.verify_dest_error(None) |
| 401 | |
| 402 | def test_non_wellformed_node_alias(self) -> None: |
| 403 | alias = '123-foo' |
| 404 | |
| 405 | mapping: BlockBitmapMapping = [{ |
| 406 | 'node-name': self.src_node_name, |
| 407 | 'alias': alias, |
| 408 | 'bitmaps': [] |
| 409 | }] |
| 410 | |
| 411 | self.set_mapping(self.vm_a, mapping, |
| 412 | f"Invalid mapping given for block-bitmap-mapping: " |
| 413 | f"The node alias '{alias}' is not well-formed") |
| 414 | |
| 415 | def test_node_alias_too_long(self) -> None: |
| 416 | alias = 'a' * 256 |
| 417 | |
| 418 | mapping: BlockBitmapMapping = [{ |
| 419 | 'node-name': self.src_node_name, |
| 420 | 'alias': alias, |
| 421 | 'bitmaps': [] |
| 422 | }] |
| 423 | |
| 424 | self.set_mapping(self.vm_a, mapping, |
| 425 | f"Invalid mapping given for block-bitmap-mapping: " |
| 426 | f"The node alias '{alias}' is longer than 255 bytes") |
| 427 | |
| 428 | def test_bitmap_alias_too_long(self) -> None: |
| 429 | alias = 'a' * 256 |
| 430 | |
| 431 | mapping = self.mapping(self.src_node_name, self.dst_node_name, |
| 432 | self.src_bmap_name, alias) |
| 433 | |
| 434 | self.set_mapping(self.vm_a, mapping, |
| 435 | f"Invalid mapping given for block-bitmap-mapping: " |
| 436 | f"The bitmap alias '{alias}' is longer than 255 " |
| 437 | f"bytes") |
| 438 | |
| 439 | def test_bitmap_name_too_long(self) -> None: |
| 440 | name = 'a' * 256 |
| 441 | |
| 442 | self.vm_a.cmd('block-dirty-bitmap-add', |
| 443 | node=self.src_node_name, |
| 444 | name=name) |
| 445 | |
| 446 | self.migrate(False, False) |
| 447 | |
| 448 | # Check for the error in the source's log |
| 449 | self.vm_a.shutdown() |
| 450 | |
| 451 | log = self.vm_a.get_log() |
| 452 | assert log is not None # Loaded after shutdown |
| 453 | |
| 454 | self.assertIn(f"Cannot migrate bitmap '{name}' on node " |
| 455 | f"'{self.src_node_name}': Name is longer than 255 bytes", |
| 456 | log) |
| 457 | |
| 458 | # Destination VM will terminate w/ error of its own accord |
| 459 | # due to the failed migration. |
| 460 | self.vm_b.wait() |
| 461 | rc = self.vm_b.exitcode() |
| 462 | assert rc is not None and rc > 0 |
| 463 | |
| 464 | def test_aliased_bitmap_name_too_long(self) -> None: |
| 465 | # Longer than the maximum for bitmap names |
| 466 | self.dst_bmap_name = 'a' * 1024 |
| 467 | |
| 468 | mapping = self.mapping(self.dst_node_name, self.src_node_name, |
| 469 | self.dst_bmap_name, self.src_bmap_name) |
| 470 | |
| 471 | # We would have to create this bitmap during migration, and |
| 472 | # that would fail, because the name is too long. Better to |
| 473 | # catch it early. |
| 474 | self.set_mapping(self.vm_b, mapping, |
| 475 | f"Invalid mapping given for block-bitmap-mapping: " |
| 476 | f"The bitmap name '{self.dst_bmap_name}' is longer " |
| 477 | f"than 1023 bytes") |
| 478 | |
| 479 | def test_node_name_too_long(self) -> None: |
| 480 | # Longer than the maximum for node names |
| 481 | self.dst_node_name = 'a' * 32 |
| 482 | |
| 483 | mapping = self.mapping(self.dst_node_name, self.src_node_name, |
| 484 | self.dst_bmap_name, self.src_bmap_name) |
| 485 | |
| 486 | # During migration, this would appear simply as a node that |
| 487 | # cannot be found. Still better to catch impossible node |
| 488 | # names early (similar to test_non_wellformed_node_alias). |
| 489 | self.set_mapping(self.vm_b, mapping, |
| 490 | f"Invalid mapping given for block-bitmap-mapping: " |
| 491 | f"The node name '{self.dst_node_name}' is longer " |
| 492 | f"than 31 bytes") |
| 493 | |
| 494 | |
| 495 | class TestCrossAliasMigration(TestDirtyBitmapMigration): |
| 496 | """ |
| 497 | Swap aliases, both to see that qemu does not get confused, and |
| 498 | that we can migrate multiple things at once. |
| 499 | |
| 500 | So we migrate this: |
| 501 | node-a.bmap-a -> node-b.bmap-b |
| 502 | node-a.bmap-b -> node-b.bmap-a |
| 503 | node-b.bmap-a -> node-a.bmap-b |
| 504 | node-b.bmap-b -> node-a.bmap-a |
| 505 | """ |
| 506 | |
| 507 | src_node_name = 'node-a' |
| 508 | dst_node_name = 'node-b' |
| 509 | src_bmap_name = 'bmap-a' |
| 510 | dst_bmap_name = 'bmap-b' |
| 511 | |
| 512 | def setUp(self) -> None: |
| 513 | TestDirtyBitmapMigration.setUp(self) |
| 514 | |
| 515 | # Now create another block device and let both have two bitmaps each |
| 516 | self.vm_a.cmd('blockdev-add', |
| 517 | node_name='node-b', driver='null-co') |
| 518 | |
| 519 | self.vm_b.cmd('blockdev-add', |
| 520 | node_name='node-a', driver='null-co') |
| 521 | |
| 522 | bmaps_to_add = (('node-a', 'bmap-b'), |
| 523 | ('node-b', 'bmap-a'), |
| 524 | ('node-b', 'bmap-b')) |
| 525 | |
| 526 | for (node, bmap) in bmaps_to_add: |
| 527 | self.vm_a.cmd('block-dirty-bitmap-add', |
| 528 | node=node, name=bmap) |
| 529 | |
| 530 | @staticmethod |
| 531 | def cross_mapping() -> BlockBitmapMapping: |
| 532 | return [ |
| 533 | { |
| 534 | 'node-name': 'node-a', |
| 535 | 'alias': 'node-b', |
| 536 | 'bitmaps': [ |
| 537 | { |
| 538 | 'name': 'bmap-a', |
| 539 | 'alias': 'bmap-b' |
| 540 | }, |
| 541 | { |
| 542 | 'name': 'bmap-b', |
| 543 | 'alias': 'bmap-a' |
| 544 | } |
| 545 | ] |
| 546 | }, |
| 547 | { |
| 548 | 'node-name': 'node-b', |
| 549 | 'alias': 'node-a', |
| 550 | 'bitmaps': [ |
| 551 | { |
| 552 | 'name': 'bmap-b', |
| 553 | 'alias': 'bmap-a' |
| 554 | }, |
| 555 | { |
| 556 | 'name': 'bmap-a', |
| 557 | 'alias': 'bmap-b' |
| 558 | } |
| 559 | ] |
| 560 | } |
| 561 | ] |
| 562 | |
| 563 | def verify_dest_has_all_bitmaps(self) -> None: |
| 564 | bitmaps = self.vm_b.query_bitmaps() |
| 565 | |
| 566 | # Extract and sort bitmap names |
| 567 | for node in bitmaps: |
| 568 | bitmaps[node] = sorted((bmap['name'] for bmap in bitmaps[node])) |
| 569 | |
| 570 | self.assertEqual(bitmaps, |
| 571 | {'node-a': ['bmap-a', 'bmap-b'], |
| 572 | 'node-b': ['bmap-a', 'bmap-b']}) |
| 573 | |
| 574 | def test_alias_on_src(self) -> None: |
| 575 | self.set_mapping(self.vm_a, self.cross_mapping()) |
| 576 | |
| 577 | # Checks that node-a.bmap-a was migrated to node-b.bmap-b, and |
| 578 | # that is enough |
| 579 | self.migrate() |
| 580 | self.verify_dest_has_all_bitmaps() |
| 581 | self.verify_dest_error(None) |
| 582 | |
| 583 | def test_alias_on_dst(self) -> None: |
| 584 | self.set_mapping(self.vm_b, self.cross_mapping()) |
| 585 | |
| 586 | # Checks that node-a.bmap-a was migrated to node-b.bmap-b, and |
| 587 | # that is enough |
| 588 | self.migrate() |
| 589 | self.verify_dest_has_all_bitmaps() |
| 590 | self.verify_dest_error(None) |
| 591 | |
| 592 | class TestAliasTransformMigration(TestDirtyBitmapMigration): |
| 593 | """ |
| 594 | Tests the 'transform' option which modifies bitmap persistence on |
| 595 | migration. |
| 596 | """ |
| 597 | |
| 598 | src_node_name = 'node-a' |
| 599 | dst_node_name = 'node-b' |
| 600 | src_bmap_name = 'bmap-a' |
| 601 | dst_bmap_name = 'bmap-b' |
| 602 | |
| 603 | def setUp(self) -> None: |
| 604 | TestDirtyBitmapMigration.setUp(self) |
| 605 | |
| 606 | # Now create another block device and let both have two bitmaps each |
| 607 | self.vm_a.cmd('blockdev-add', |
| 608 | node_name='node-b', driver='null-co', |
| 609 | read_zeroes=False) |
| 610 | |
| 611 | self.vm_b.cmd('blockdev-add', |
| 612 | node_name='node-a', driver='null-co', |
| 613 | read_zeroes=False) |
| 614 | |
| 615 | bmaps_to_add = (('node-a', 'bmap-b'), |
| 616 | ('node-b', 'bmap-a'), |
| 617 | ('node-b', 'bmap-b')) |
| 618 | |
| 619 | for (node, bmap) in bmaps_to_add: |
| 620 | self.vm_a.cmd('block-dirty-bitmap-add', |
| 621 | node=node, name=bmap) |
| 622 | |
| 623 | @staticmethod |
| 624 | def transform_mapping() -> BlockBitmapMapping: |
| 625 | return [ |
| 626 | { |
| 627 | 'node-name': 'node-a', |
| 628 | 'alias': 'node-a', |
| 629 | 'bitmaps': [ |
| 630 | { |
| 631 | 'name': 'bmap-a', |
| 632 | 'alias': 'bmap-a', |
| 633 | 'transform': |
| 634 | { |
| 635 | 'persistent': True |
| 636 | } |
| 637 | }, |
| 638 | { |
| 639 | 'name': 'bmap-b', |
| 640 | 'alias': 'bmap-b' |
| 641 | } |
| 642 | ] |
| 643 | }, |
| 644 | { |
| 645 | 'node-name': 'node-b', |
| 646 | 'alias': 'node-b', |
| 647 | 'bitmaps': [ |
| 648 | { |
| 649 | 'name': 'bmap-a', |
| 650 | 'alias': 'bmap-a' |
| 651 | }, |
| 652 | { |
| 653 | 'name': 'bmap-b', |
| 654 | 'alias': 'bmap-b' |
| 655 | } |
| 656 | ] |
| 657 | } |
| 658 | ] |
| 659 | |
| 660 | def verify_dest_bitmap_state(self) -> None: |
| 661 | bitmaps = self.vm_b.query_bitmaps() |
| 662 | |
| 663 | for node in bitmaps: |
| 664 | bitmaps[node] = sorted(((bmap['name'], bmap['persistent']) |
| 665 | for bmap in bitmaps[node])) |
| 666 | |
| 667 | self.assertEqual(bitmaps, |
| 668 | {'node-a': [('bmap-a', True), ('bmap-b', False)], |
| 669 | 'node-b': [('bmap-a', False), ('bmap-b', False)]}) |
| 670 | |
| 671 | def test_transform_on_src(self) -> None: |
| 672 | self.set_mapping(self.vm_a, self.transform_mapping()) |
| 673 | |
| 674 | self.migrate() |
| 675 | self.verify_dest_bitmap_state() |
| 676 | self.verify_dest_error(None) |
| 677 | |
| 678 | def test_transform_on_dst(self) -> None: |
| 679 | self.set_mapping(self.vm_b, self.transform_mapping()) |
| 680 | |
| 681 | self.migrate() |
| 682 | self.verify_dest_bitmap_state() |
| 683 | self.verify_dest_error(None) |
| 684 | |
| 685 | if __name__ == '__main__': |
| 686 | iotests.main(supported_protocols=['file'], |
| 687 | require_hmp=True) |