| 1 | /* |
| 2 | * Copyright (c) 2016-2018 Red Hat, Inc. and/or its affiliates |
| 3 | * based on the vhost-user-test.c that is: |
| 4 | * Copyright (c) 2014 Virtual Open Systems Sarl. |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 7 | * See the COPYING file in the top-level directory. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | #include "qemu/osdep.h" |
| 12 | |
| 13 | #include "chardev/char.h" |
| 14 | #include "crypto/tlscredspsk.h" |
| 15 | #include "libqtest.h" |
| 16 | #include "migration/bootfile.h" |
| 17 | #include "migration/framework.h" |
| 18 | #include "migration/migration-qmp.h" |
| 19 | #include "migration/migration-util.h" |
| 20 | #include "ppc-util.h" |
| 21 | #include "qapi/error.h" |
| 22 | #include "qobject/qjson.h" |
| 23 | #include "qemu/bswap.h" |
| 24 | #include "qemu/module.h" |
| 25 | #include "qemu/option.h" |
| 26 | #include "qemu/range.h" |
| 27 | #include "qemu/sockets.h" |
| 28 | |
| 29 | |
| 30 | #define QEMU_VM_FILE_MAGIC 0x5145564d |
| 31 | #define QEMU_ENV_SRC "QTEST_QEMU_BINARY_SRC" |
| 32 | #define QEMU_ENV_DST "QTEST_QEMU_BINARY_DST" |
| 33 | #define MULTIFD_TEST_CHANNELS 4 |
| 34 | |
| 35 | unsigned start_address; |
| 36 | unsigned end_address; |
| 37 | static QTestMigrationState src_state; |
| 38 | static QTestMigrationState dst_state; |
| 39 | static char *tmpfs; |
| 40 | |
| 41 | /* |
| 42 | * An initial 3 MB offset is used as that corresponds |
| 43 | * to ~1 sec of data transfer with our bandwidth setting. |
| 44 | */ |
| 45 | #define MAGIC_OFFSET_BASE (3 * 1024 * 1024) |
| 46 | /* |
| 47 | * A further 1k is added to ensure we're not a multiple |
| 48 | * of TEST_MEM_PAGE_SIZE, thus avoid clash with writes |
| 49 | * from the migration guest workload. |
| 50 | */ |
| 51 | #define MAGIC_OFFSET_SHUFFLE 1024 |
| 52 | #define MAGIC_OFFSET (MAGIC_OFFSET_BASE + MAGIC_OFFSET_SHUFFLE) |
| 53 | #define MAGIC_MARKER 0xFEED12345678CAFEULL |
| 54 | |
| 55 | |
| 56 | /* |
| 57 | * Wait for some output in the serial output file, |
| 58 | * we get an 'A' followed by an endless string of 'B's |
| 59 | * but on the destination we won't have the A (unless we enabled suspend/resume) |
| 60 | */ |
| 61 | void wait_for_serial(const char *side) |
| 62 | { |
| 63 | g_autofree char *serialpath = g_strdup_printf("%s/%s", tmpfs, side); |
| 64 | FILE *serialfile = fopen(serialpath, "r"); |
| 65 | |
| 66 | do { |
| 67 | int readvalue = fgetc(serialfile); |
| 68 | |
| 69 | switch (readvalue) { |
| 70 | case 'A': |
| 71 | /* Fine */ |
| 72 | break; |
| 73 | |
| 74 | case 'B': |
| 75 | /* It's alive! */ |
| 76 | fclose(serialfile); |
| 77 | return; |
| 78 | |
| 79 | case EOF: |
| 80 | fseek(serialfile, 0, SEEK_SET); |
| 81 | usleep(1000); |
| 82 | break; |
| 83 | |
| 84 | default: |
| 85 | fprintf(stderr, "Unexpected %d on %s serial\n", readvalue, side); |
| 86 | g_assert_not_reached(); |
| 87 | } |
| 88 | } while (true); |
| 89 | } |
| 90 | |
| 91 | void migrate_prepare_for_dirty_mem(QTestState *from) |
| 92 | { |
| 93 | /* |
| 94 | * The guest workflow iterates from start_address to |
| 95 | * end_address, writing 1 byte every TEST_MEM_PAGE_SIZE |
| 96 | * bytes. |
| 97 | * |
| 98 | * IOW, if we write to mem at a point which is NOT |
| 99 | * a multiple of TEST_MEM_PAGE_SIZE, our write won't |
| 100 | * conflict with the migration workflow. |
| 101 | * |
| 102 | * We put in a marker here, that we'll use to determine |
| 103 | * when the data has been transferred to the dst. |
| 104 | */ |
| 105 | qtest_writeq(from, start_address + MAGIC_OFFSET, MAGIC_MARKER); |
| 106 | } |
| 107 | |
| 108 | void migrate_wait_for_dirty_mem(QTestState *from, QTestState *to) |
| 109 | { |
| 110 | uint64_t watch_address = start_address + MAGIC_OFFSET_BASE; |
| 111 | uint64_t marker_address = start_address + MAGIC_OFFSET; |
| 112 | uint8_t watch_byte; |
| 113 | |
| 114 | /* |
| 115 | * Wait for the MAGIC_MARKER to get transferred, as an |
| 116 | * indicator that a migration pass has made some known |
| 117 | * amount of progress. |
| 118 | */ |
| 119 | do { |
| 120 | usleep(1000 * 10); |
| 121 | } while (qtest_readq(to, marker_address) != MAGIC_MARKER); |
| 122 | |
| 123 | |
| 124 | /* If suspended, src only iterates once, and watch_byte may never change */ |
| 125 | if (src_state.suspend_me) { |
| 126 | return; |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * Now ensure that already transferred bytes are |
| 131 | * dirty again from the guest workload. Note the |
| 132 | * guest byte value will wrap around and by chance |
| 133 | * match the original watch_byte. This is harmless |
| 134 | * as we'll eventually see a different value if we |
| 135 | * keep watching |
| 136 | */ |
| 137 | watch_byte = qtest_readb(from, watch_address); |
| 138 | do { |
| 139 | usleep(1000 * 10); |
| 140 | } while (qtest_readb(from, watch_address) == watch_byte); |
| 141 | } |
| 142 | |
| 143 | static void check_guests_ram(QTestState *who) |
| 144 | { |
| 145 | /* |
| 146 | * Our ASM test will have been incrementing one byte from each page from |
| 147 | * start_address to < end_address in order. This gives us a constraint |
| 148 | * that any page's byte should be equal or less than the previous pages |
| 149 | * byte (mod 256); and they should all be equal except for one transition |
| 150 | * at the point where we meet the incrementer. (We're running this with |
| 151 | * the guest stopped). |
| 152 | */ |
| 153 | unsigned address; |
| 154 | uint8_t first_byte; |
| 155 | uint8_t last_byte; |
| 156 | bool hit_edge = false; |
| 157 | int bad = 0; |
| 158 | |
| 159 | qtest_memread(who, start_address, &first_byte, 1); |
| 160 | last_byte = first_byte; |
| 161 | |
| 162 | for (address = start_address + TEST_MEM_PAGE_SIZE; address < end_address; |
| 163 | address += TEST_MEM_PAGE_SIZE) |
| 164 | { |
| 165 | uint8_t b; |
| 166 | qtest_memread(who, address, &b, 1); |
| 167 | if (b != last_byte) { |
| 168 | if (((b + 1) % 256) == last_byte && !hit_edge) { |
| 169 | /* |
| 170 | * This is OK, the guest stopped at the point of |
| 171 | * incrementing the previous page but didn't get |
| 172 | * to us yet. |
| 173 | */ |
| 174 | hit_edge = true; |
| 175 | last_byte = b; |
| 176 | } else { |
| 177 | bad++; |
| 178 | if (bad <= 10) { |
| 179 | fprintf(stderr, "Memory content inconsistency at %x" |
| 180 | " first_byte = %x last_byte = %x current = %x" |
| 181 | " hit_edge = %x\n", |
| 182 | address, first_byte, last_byte, b, hit_edge); |
| 183 | } |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | if (bad >= 10) { |
| 188 | fprintf(stderr, "and in another %d pages", bad - 10); |
| 189 | } |
| 190 | g_assert(bad == 0); |
| 191 | } |
| 192 | |
| 193 | static void cleanup(const char *filename) |
| 194 | { |
| 195 | g_autofree char *path = g_strdup_printf("%s/%s", tmpfs, filename); |
| 196 | |
| 197 | unlink(path); |
| 198 | } |
| 199 | |
| 200 | static QList *migrate_start_get_qmp_capabilities(const MigrateStart *args) |
| 201 | { |
| 202 | QList *capabilities = NULL; |
| 203 | |
| 204 | if (args->oob) { |
| 205 | capabilities = qlist_new(); |
| 206 | qlist_append_str(capabilities, "oob"); |
| 207 | } |
| 208 | return capabilities; |
| 209 | } |
| 210 | |
| 211 | static void migrate_start_set_capabilities(QTestState *from, QTestState *to, |
| 212 | MigrateStart *args) |
| 213 | { |
| 214 | /* |
| 215 | * MigrationCapability_lookup and MIGRATION_CAPABILITY_ constants |
| 216 | * are from qapi-types-migration.h. |
| 217 | */ |
| 218 | |
| 219 | /* |
| 220 | * Enable return path first, since other features depend on it. |
| 221 | */ |
| 222 | if (args->caps[MIGRATION_CAPABILITY_RETURN_PATH]) { |
| 223 | if (from) { |
| 224 | migrate_set_capability(from, "return-path", true); |
| 225 | } |
| 226 | if (to) { |
| 227 | migrate_set_capability(to, "return-path", true); |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | for (uint8_t i = 0; i < MIGRATION_CAPABILITY__MAX; i++) { |
| 232 | if (!args->caps[i]) { |
| 233 | continue; |
| 234 | } |
| 235 | if (from) { |
| 236 | migrate_set_capability(from, |
| 237 | MigrationCapability_lookup.array[i], true); |
| 238 | } |
| 239 | if (to) { |
| 240 | migrate_set_capability(to, |
| 241 | MigrationCapability_lookup.array[i], true); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | /* |
| 246 | * Always enable migration events. Libvirt always uses it, let's try |
| 247 | * to mimic as closer as that. |
| 248 | */ |
| 249 | migrate_set_capability(from, "events", true); |
| 250 | if (!args->defer_target_connect && to) { |
| 251 | migrate_set_capability(to, "events", true); |
| 252 | } |
| 253 | |
| 254 | /* |
| 255 | * Default number of channels should be fine for most |
| 256 | * tests. Individual tests can override by calling |
| 257 | * migrate_set_parameter() directly. |
| 258 | */ |
| 259 | if (args->caps[MIGRATION_CAPABILITY_MULTIFD]) { |
| 260 | migrate_set_parameter_int(from, "multifd-channels", |
| 261 | MULTIFD_TEST_CHANNELS); |
| 262 | if (to) { |
| 263 | migrate_set_parameter_int(to, "multifd-channels", |
| 264 | MULTIFD_TEST_CHANNELS); |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | return; |
| 269 | } |
| 270 | |
| 271 | static char *test_shmem_path(void) |
| 272 | { |
| 273 | return g_strdup_printf("/dev/shm/qemu-%d", getpid()); |
| 274 | } |
| 275 | |
| 276 | #define MIG_MEM_ID "mig.mem" |
| 277 | |
| 278 | /* NOTE: caller is responsbile to free the string if returned */ |
| 279 | static char *migrate_mem_type_get_opts(MemType type, const char *memory_size) |
| 280 | { |
| 281 | g_autofree char *shmem_path = NULL; |
| 282 | g_autofree char *backend = NULL; |
| 283 | bool share = true; |
| 284 | char *opts; |
| 285 | |
| 286 | switch (type) { |
| 287 | case MEM_TYPE_ANON: |
| 288 | backend = g_strdup("-object memory-backend-ram"); |
| 289 | share = false; |
| 290 | break; |
| 291 | case MEM_TYPE_SHMEM: |
| 292 | shmem_path = test_shmem_path(); |
| 293 | backend = g_strdup_printf("-object memory-backend-file,mem-path=%s", |
| 294 | shmem_path); |
| 295 | break; |
| 296 | case MEM_TYPE_MEMFD: |
| 297 | backend = g_strdup("-object memory-backend-memfd"); |
| 298 | break; |
| 299 | default: |
| 300 | g_assert_not_reached(); |
| 301 | break; |
| 302 | } |
| 303 | |
| 304 | opts = g_strdup_printf("%s,id=%s,size=%s,share=%s", |
| 305 | backend, MIG_MEM_ID, memory_size, |
| 306 | share ? "on" : "off"); |
| 307 | |
| 308 | return opts; |
| 309 | } |
| 310 | |
| 311 | int migrate_args(char **from, char **to, MigrateStart *args) |
| 312 | { |
| 313 | /* options for source and target */ |
| 314 | g_autofree gchar *arch_opts = NULL; |
| 315 | gchar *cmd_source = NULL; |
| 316 | gchar *cmd_target = NULL; |
| 317 | const gchar *ignore_stderr; |
| 318 | g_autofree char *mem_object = NULL; |
| 319 | const char *kvm_opts = NULL; |
| 320 | const char *arch = qtest_get_arch(); |
| 321 | const char *memory_size; |
| 322 | const char *machine_alias, *machine_opts = ""; |
| 323 | g_autofree char *machine = NULL; |
| 324 | const char *bootpath = bootfile_get(); |
| 325 | g_autofree char *memory_backend = NULL; |
| 326 | const char *events; |
| 327 | |
| 328 | if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) { |
| 329 | memory_size = "150M"; |
| 330 | |
| 331 | if (g_str_equal(arch, "i386")) { |
| 332 | machine_alias = "pc"; |
| 333 | } else { |
| 334 | machine_alias = "q35"; |
| 335 | } |
| 336 | arch_opts = g_strdup_printf( |
| 337 | "-drive if=none,id=d0,file=%s,format=raw " |
| 338 | "-device ide-hd,drive=d0,secs=1,cyls=1,heads=1", bootpath); |
| 339 | start_address = X86_TEST_MEM_START; |
| 340 | end_address = X86_TEST_MEM_END; |
| 341 | } else if (g_str_equal(arch, "s390x")) { |
| 342 | memory_size = "128M"; |
| 343 | machine_alias = "s390-ccw-virtio"; |
| 344 | arch_opts = g_strdup_printf("-bios %s", bootpath); |
| 345 | start_address = S390_TEST_MEM_START; |
| 346 | end_address = S390_TEST_MEM_END; |
| 347 | } else if (strcmp(arch, "ppc64") == 0) { |
| 348 | memory_size = "256M"; |
| 349 | start_address = PPC_TEST_MEM_START; |
| 350 | end_address = PPC_TEST_MEM_END; |
| 351 | machine_alias = "pseries"; |
| 352 | machine_opts = "vsmt=8"; |
| 353 | arch_opts = g_strdup_printf( |
| 354 | "-nodefaults -machine " PSERIES_DEFAULT_CAPABILITIES " " |
| 355 | "-bios %s", bootpath); |
| 356 | } else if (strcmp(arch, "aarch64") == 0) { |
| 357 | memory_size = "150M"; |
| 358 | machine_alias = "virt"; |
| 359 | machine_opts = "gic-version=3"; |
| 360 | arch_opts = g_strdup_printf("-cpu max -kernel %s", bootpath); |
| 361 | start_address = ARM_TEST_MEM_START; |
| 362 | end_address = ARM_TEST_MEM_END; |
| 363 | } else if (strcmp(arch, "loongarch64") == 0) { |
| 364 | memory_size = "256M"; |
| 365 | machine_alias = "virt"; |
| 366 | arch_opts = g_strdup_printf("-bios %s", bootpath); |
| 367 | start_address = LOONGARCH_TEST_MEM_START; |
| 368 | end_address = LOONGARCH_TEST_MEM_END; |
| 369 | } else { |
| 370 | g_assert_not_reached(); |
| 371 | } |
| 372 | |
| 373 | if (!qtest_verbose("test") && args->hide_stderr) { |
| 374 | #ifndef _WIN32 |
| 375 | ignore_stderr = "2>/dev/null"; |
| 376 | #else |
| 377 | /* |
| 378 | * On Windows the QEMU executable is created via CreateProcess() and |
| 379 | * IO redirection does not work, so don't bother adding IO redirection |
| 380 | * to the command line. |
| 381 | */ |
| 382 | ignore_stderr = ""; |
| 383 | #endif |
| 384 | } else { |
| 385 | ignore_stderr = ""; |
| 386 | } |
| 387 | |
| 388 | mem_object = migrate_mem_type_get_opts(args->mem_type, memory_size); |
| 389 | memory_backend = g_strdup_printf("-machine memory-backend=%s %s", |
| 390 | MIG_MEM_ID, mem_object); |
| 391 | |
| 392 | if (args->use_dirty_ring) { |
| 393 | kvm_opts = ",dirty-ring-size=4096"; |
| 394 | } |
| 395 | |
| 396 | if (!qtest_has_machine(machine_alias)) { |
| 397 | g_autofree char *msg = g_strdup_printf("machine %s not supported", machine_alias); |
| 398 | g_test_skip(msg); |
| 399 | return -1; |
| 400 | } |
| 401 | |
| 402 | machine = resolve_machine_version(machine_alias, QEMU_ENV_SRC, |
| 403 | QEMU_ENV_DST); |
| 404 | |
| 405 | g_test_message("Using machine type: %s", machine); |
| 406 | |
| 407 | cmd_source = g_strdup_printf("-accel kvm%s -accel tcg " |
| 408 | "-machine %s,%s " |
| 409 | "-name source,debug-threads=on " |
| 410 | "%s " |
| 411 | "-serial file:%s/src_serial " |
| 412 | "%s %s %s", |
| 413 | kvm_opts ? kvm_opts : "", |
| 414 | machine, machine_opts, |
| 415 | memory_backend, tmpfs, |
| 416 | arch_opts ? arch_opts : "", |
| 417 | args->opts_source ? args->opts_source : "", |
| 418 | ignore_stderr); |
| 419 | |
| 420 | /* |
| 421 | * If the monitor connection is deferred, enable events on the command line |
| 422 | * so none are missed. This is for testing only, do not set migration |
| 423 | * options like this in general. |
| 424 | */ |
| 425 | events = args->defer_target_connect ? "-global migration.x-events=on" : ""; |
| 426 | |
| 427 | cmd_target = g_strdup_printf("-accel kvm%s -accel tcg " |
| 428 | "-machine %s,%s " |
| 429 | "-name target,debug-threads=on " |
| 430 | "%s " |
| 431 | "-serial file:%s/dest_serial " |
| 432 | "-incoming defer " |
| 433 | "%s %s %s %s", |
| 434 | kvm_opts ? kvm_opts : "", |
| 435 | machine, machine_opts, |
| 436 | memory_backend, tmpfs, |
| 437 | events, |
| 438 | arch_opts ? arch_opts : "", |
| 439 | args->opts_target ? args->opts_target : "", |
| 440 | ignore_stderr); |
| 441 | |
| 442 | *from = cmd_source; |
| 443 | *to = cmd_target; |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | static bool migrate_mem_type_prepare(MemType type) |
| 448 | { |
| 449 | switch (type) { |
| 450 | case MEM_TYPE_SHMEM: |
| 451 | if (!g_file_test("/dev/shm", G_FILE_TEST_IS_DIR)) { |
| 452 | g_test_skip("/dev/shm is not supported"); |
| 453 | return false; |
| 454 | } |
| 455 | break; |
| 456 | default: |
| 457 | break; |
| 458 | } |
| 459 | |
| 460 | return true; |
| 461 | } |
| 462 | |
| 463 | static void migrate_mem_type_cleanup(MemType type) |
| 464 | { |
| 465 | g_autofree char *shmem_path = NULL; |
| 466 | |
| 467 | switch (type) { |
| 468 | case MEM_TYPE_SHMEM: |
| 469 | |
| 470 | /* |
| 471 | * Remove shmem file immediately to avoid memory leak in test |
| 472 | * failed case. It's valid because QEMU has already opened this |
| 473 | * file |
| 474 | */ |
| 475 | shmem_path = test_shmem_path(); |
| 476 | unlink(shmem_path); |
| 477 | break; |
| 478 | default: |
| 479 | break; |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | int migrate_start(QTestState **from, QTestState **to, MigrateStart *args) |
| 484 | { |
| 485 | g_autofree gchar *cmd_source = NULL; |
| 486 | g_autofree gchar *cmd_target = NULL; |
| 487 | g_autoptr(QList) capabilities = migrate_start_get_qmp_capabilities(args); |
| 488 | |
| 489 | if (!migrate_mem_type_prepare(args->mem_type)) { |
| 490 | return -1; |
| 491 | } |
| 492 | |
| 493 | dst_state = (QTestMigrationState) { }; |
| 494 | src_state = (QTestMigrationState) { }; |
| 495 | bootfile_create(qtest_get_arch(), tmpfs, args->suspend_me); |
| 496 | src_state.suspend_me = args->suspend_me; |
| 497 | |
| 498 | if (migrate_args(&cmd_source, &cmd_target, args)) { |
| 499 | return -1; |
| 500 | } |
| 501 | |
| 502 | if (!args->only_target) { |
| 503 | *from = qtest_init_ext(QEMU_ENV_SRC, cmd_source, capabilities, true); |
| 504 | qtest_qmp_set_event_callback(*from, |
| 505 | migrate_watch_for_events, |
| 506 | &src_state); |
| 507 | } |
| 508 | |
| 509 | if (!args->only_source) { |
| 510 | *to = qtest_init_ext(QEMU_ENV_DST, cmd_target, capabilities, |
| 511 | !args->defer_target_connect); |
| 512 | qtest_qmp_set_event_callback(*to, |
| 513 | migrate_watch_for_events, |
| 514 | &dst_state); |
| 515 | } |
| 516 | |
| 517 | migrate_mem_type_cleanup(args->mem_type); |
| 518 | migrate_start_set_capabilities(*from, |
| 519 | args->only_source ? NULL : *to, |
| 520 | args); |
| 521 | |
| 522 | return 0; |
| 523 | } |
| 524 | |
| 525 | void migrate_end(QTestState *from, QTestState *to, bool test_dest) |
| 526 | { |
| 527 | unsigned char dest_byte_a, dest_byte_b, dest_byte_c, dest_byte_d; |
| 528 | |
| 529 | qtest_quit(from); |
| 530 | |
| 531 | if (test_dest) { |
| 532 | qtest_memread(to, start_address, &dest_byte_a, 1); |
| 533 | |
| 534 | /* Destination still running, wait for a byte to change */ |
| 535 | do { |
| 536 | qtest_memread(to, start_address, &dest_byte_b, 1); |
| 537 | usleep(1000 * 10); |
| 538 | } while (dest_byte_a == dest_byte_b); |
| 539 | |
| 540 | qtest_qmp_assert_success(to, "{ 'execute' : 'stop'}"); |
| 541 | |
| 542 | /* With it stopped, check nothing changes */ |
| 543 | qtest_memread(to, start_address, &dest_byte_c, 1); |
| 544 | usleep(1000 * 200); |
| 545 | qtest_memread(to, start_address, &dest_byte_d, 1); |
| 546 | g_assert_cmpint(dest_byte_c, ==, dest_byte_d); |
| 547 | |
| 548 | check_guests_ram(to); |
| 549 | } |
| 550 | |
| 551 | qtest_quit(to); |
| 552 | |
| 553 | cleanup("migsocket"); |
| 554 | cleanup("cpr.sock"); |
| 555 | cleanup("src_serial"); |
| 556 | cleanup("dest_serial"); |
| 557 | cleanup(FILE_TEST_FILENAME); |
| 558 | } |
| 559 | |
| 560 | static int migrate_postcopy_prepare(QTestState **from_ptr, |
| 561 | QTestState **to_ptr, |
| 562 | void **hook_data, |
| 563 | MigrateCommon *args) |
| 564 | { |
| 565 | QTestState *from, *to; |
| 566 | |
| 567 | /* set postcopy capabilities */ |
| 568 | args->start.caps[MIGRATION_CAPABILITY_POSTCOPY_BLOCKTIME] = true; |
| 569 | args->start.caps[MIGRATION_CAPABILITY_POSTCOPY_RAM] = true; |
| 570 | |
| 571 | if (migrate_start(&from, &to, &args->start)) { |
| 572 | return -1; |
| 573 | } |
| 574 | |
| 575 | if (args->start_hook) { |
| 576 | *hook_data = args->start_hook(from, to); |
| 577 | } |
| 578 | |
| 579 | migrate_ensure_non_converge(from); |
| 580 | migrate_prepare_for_dirty_mem(from); |
| 581 | qtest_qmp_assert_success(to, "{ 'execute': 'migrate-incoming'," |
| 582 | " 'arguments': { " |
| 583 | " 'exit-on-error': false," |
| 584 | " 'channels': [ { 'channel-type': 'main'," |
| 585 | " 'addr': { 'transport': 'socket'," |
| 586 | " 'type': 'inet'," |
| 587 | " 'host': '127.0.0.1'," |
| 588 | " 'port': '0' } } ] } }"); |
| 589 | |
| 590 | /* Wait for the first serial output from the source */ |
| 591 | wait_for_serial("src_serial"); |
| 592 | wait_for_suspend(from, &src_state); |
| 593 | |
| 594 | migrate_qmp(from, to, NULL, NULL, "{}"); |
| 595 | |
| 596 | migrate_wait_for_dirty_mem(from, to); |
| 597 | |
| 598 | *from_ptr = from; |
| 599 | *to_ptr = to; |
| 600 | |
| 601 | return 0; |
| 602 | } |
| 603 | |
| 604 | static void migrate_postcopy_complete(QTestState *from, QTestState *to, |
| 605 | void *hook_data, MigrateCommon *args) |
| 606 | { |
| 607 | MigrationTestEnv *env = migration_get_env(); |
| 608 | |
| 609 | wait_for_migration_complete(from); |
| 610 | |
| 611 | if (args->start.suspend_me) { |
| 612 | /* wakeup succeeds only if guest is suspended */ |
| 613 | qtest_qmp_assert_success(to, "{'execute': 'system_wakeup'}"); |
| 614 | } |
| 615 | |
| 616 | /* Make sure we get at least one "B" on destination */ |
| 617 | wait_for_serial("dest_serial"); |
| 618 | |
| 619 | if (env->uffd_feature_thread_id) { |
| 620 | read_blocktime(to); |
| 621 | } |
| 622 | |
| 623 | if (args->end_hook) { |
| 624 | args->end_hook(from, to, hook_data); |
| 625 | } |
| 626 | |
| 627 | migrate_end(from, to, true); |
| 628 | } |
| 629 | |
| 630 | void test_postcopy_common(MigrateCommon *args) |
| 631 | { |
| 632 | void *hook_data = NULL; |
| 633 | QTestState *from, *to; |
| 634 | |
| 635 | if (migrate_postcopy_prepare(&from, &to, &hook_data, args)) { |
| 636 | return; |
| 637 | } |
| 638 | migrate_postcopy_start(from, to, &src_state); |
| 639 | migrate_postcopy_complete(from, to, hook_data, args); |
| 640 | } |
| 641 | |
| 642 | static void wait_for_postcopy_status(QTestState *one, const char *status) |
| 643 | { |
| 644 | wait_for_migration_status(one, status, |
| 645 | (const char * []) { |
| 646 | "failed", "active", |
| 647 | "completed", NULL |
| 648 | }); |
| 649 | } |
| 650 | |
| 651 | static void postcopy_recover_fail(QTestState *from, QTestState *to, |
| 652 | PostcopyRecoveryFailStage stage) |
| 653 | { |
| 654 | #ifndef _WIN32 |
| 655 | bool fail_early = (stage == POSTCOPY_FAIL_CHANNEL_ESTABLISH); |
| 656 | int ret, pair1[2], pair2[2]; |
| 657 | char c; |
| 658 | |
| 659 | g_assert(stage > POSTCOPY_FAIL_NONE && stage < POSTCOPY_FAIL_MAX); |
| 660 | |
| 661 | /* Create two unrelated socketpairs */ |
| 662 | ret = qemu_socketpair(PF_LOCAL, SOCK_STREAM, 0, pair1); |
| 663 | g_assert_cmpint(ret, ==, 0); |
| 664 | |
| 665 | ret = qemu_socketpair(PF_LOCAL, SOCK_STREAM, 0, pair2); |
| 666 | g_assert_cmpint(ret, ==, 0); |
| 667 | |
| 668 | /* |
| 669 | * Give the guests unpaired ends of the sockets, so they'll all blocked |
| 670 | * at reading. This mimics a wrong channel established. |
| 671 | */ |
| 672 | qtest_qmp_fds_assert_success(from, &pair1[0], 1, |
| 673 | "{ 'execute': 'getfd'," |
| 674 | " 'arguments': { 'fdname': 'fd-mig' }}"); |
| 675 | qtest_qmp_fds_assert_success(to, &pair2[0], 1, |
| 676 | "{ 'execute': 'getfd'," |
| 677 | " 'arguments': { 'fdname': 'fd-mig' }}"); |
| 678 | |
| 679 | /* |
| 680 | * Write the 1st byte as QEMU_VM_COMMAND (0x8) for the dest socket, to |
| 681 | * emulate the 1st byte of a real recovery, but stops from there to |
| 682 | * keep dest QEMU in RECOVER. This is needed so that we can kick off |
| 683 | * the recover process on dest QEMU (by triggering the G_IO_IN event). |
| 684 | * |
| 685 | * NOTE: this trick is not needed on src QEMUs, because src doesn't |
| 686 | * rely on an pre-existing G_IO_IN event, so it will always trigger the |
| 687 | * upcoming recovery anyway even if it can read nothing. |
| 688 | */ |
| 689 | #define QEMU_VM_COMMAND 0x08 |
| 690 | c = QEMU_VM_COMMAND; |
| 691 | ret = send(pair2[1], &c, 1, 0); |
| 692 | g_assert_cmpint(ret, ==, 1); |
| 693 | |
| 694 | if (stage == POSTCOPY_FAIL_CHANNEL_ESTABLISH) { |
| 695 | /* |
| 696 | * This will make src QEMU to fail at an early stage when trying to |
| 697 | * resume later, where it shouldn't reach RECOVER stage at all. |
| 698 | */ |
| 699 | close(pair1[1]); |
| 700 | } |
| 701 | |
| 702 | migrate_recover(to, "fd:fd-mig"); |
| 703 | migrate_qmp(from, to, "fd:fd-mig", NULL, "{'resume': true}"); |
| 704 | |
| 705 | /* |
| 706 | * Source QEMU has an extra RECOVER_SETUP phase, dest doesn't have it. |
| 707 | * Make sure it appears along the way. |
| 708 | */ |
| 709 | migration_event_wait(from, "postcopy-recover-setup"); |
| 710 | |
| 711 | if (fail_early) { |
| 712 | /* |
| 713 | * When fails at reconnection, src QEMU will automatically goes |
| 714 | * back to PAUSED state. Making sure there is an event in this |
| 715 | * case: Libvirt relies on this to detect early reconnection |
| 716 | * errors. |
| 717 | */ |
| 718 | migration_event_wait(from, "postcopy-paused"); |
| 719 | } else { |
| 720 | /* |
| 721 | * We want to test "fail later" at RECOVER stage here. Make sure |
| 722 | * both QEMU instances will go into RECOVER stage first, then test |
| 723 | * kicking them out using migrate-pause. |
| 724 | * |
| 725 | * Explicitly check the RECOVER event on src, that's what Libvirt |
| 726 | * relies on, rather than polling. |
| 727 | */ |
| 728 | migration_event_wait(from, "postcopy-recover"); |
| 729 | wait_for_postcopy_status(from, "postcopy-recover"); |
| 730 | |
| 731 | /* Need an explicit kick on src QEMU in this case */ |
| 732 | migrate_pause(from); |
| 733 | } |
| 734 | |
| 735 | /* |
| 736 | * For all failure cases, we'll reach such states on both sides now. |
| 737 | * Check them. |
| 738 | */ |
| 739 | wait_for_postcopy_status(from, "postcopy-paused"); |
| 740 | wait_for_postcopy_status(to, "postcopy-recover"); |
| 741 | |
| 742 | /* |
| 743 | * Kick dest QEMU out too. This is normally not needed in reality |
| 744 | * because when the channel is shutdown it should also happen on src. |
| 745 | * However here we used separate socket pairs so we need to do that |
| 746 | * explicitly. |
| 747 | */ |
| 748 | migrate_pause(to); |
| 749 | wait_for_postcopy_status(to, "postcopy-paused"); |
| 750 | |
| 751 | close(pair1[0]); |
| 752 | close(pair2[0]); |
| 753 | close(pair2[1]); |
| 754 | |
| 755 | if (stage != POSTCOPY_FAIL_CHANNEL_ESTABLISH) { |
| 756 | close(pair1[1]); |
| 757 | } |
| 758 | #endif |
| 759 | } |
| 760 | |
| 761 | void test_postcopy_recovery_common(MigrateCommon *args, |
| 762 | PostcopyRecoveryFailStage fail_stage) |
| 763 | { |
| 764 | QTestState *from, *to; |
| 765 | g_autofree char *uri = NULL; |
| 766 | void *hook_data = NULL; |
| 767 | |
| 768 | /* |
| 769 | * Always enable OOB QMP capability for recovery tests, migrate-recover is |
| 770 | * executed out-of-band |
| 771 | */ |
| 772 | args->start.oob = true; |
| 773 | |
| 774 | /* Always hide errors for postcopy recover tests since they're expected */ |
| 775 | args->start.hide_stderr = true; |
| 776 | |
| 777 | if (migrate_postcopy_prepare(&from, &to, &hook_data, args)) { |
| 778 | return; |
| 779 | } |
| 780 | |
| 781 | /* Turn postcopy speed down, 4K/s is slow enough on any machines */ |
| 782 | migrate_set_parameter_int(from, "max-postcopy-bandwidth", 4096); |
| 783 | |
| 784 | /* Now we start the postcopy */ |
| 785 | migrate_postcopy_start(from, to, &src_state); |
| 786 | |
| 787 | /* |
| 788 | * Wait until postcopy is really started; we can only run the |
| 789 | * migrate-pause command during a postcopy |
| 790 | */ |
| 791 | wait_for_migration_status(from, "postcopy-active", NULL); |
| 792 | |
| 793 | /* |
| 794 | * Manually stop the postcopy migration. This emulates a network |
| 795 | * failure with the migration socket |
| 796 | */ |
| 797 | migrate_pause(from); |
| 798 | |
| 799 | /* |
| 800 | * Wait for destination side to reach postcopy-paused state. The |
| 801 | * migrate-recover command can only succeed if destination machine |
| 802 | * is in the paused state |
| 803 | */ |
| 804 | wait_for_postcopy_status(to, "postcopy-paused"); |
| 805 | wait_for_postcopy_status(from, "postcopy-paused"); |
| 806 | |
| 807 | if (fail_stage) { |
| 808 | /* |
| 809 | * Test when a wrong socket specified for recover, and then the |
| 810 | * ability to kick it out, and continue with a correct socket. |
| 811 | */ |
| 812 | postcopy_recover_fail(from, to, fail_stage); |
| 813 | /* continue with a good recovery */ |
| 814 | } |
| 815 | |
| 816 | /* |
| 817 | * Create a new socket to emulate a new channel that is different |
| 818 | * from the broken migration channel; tell the destination to |
| 819 | * listen to the new port |
| 820 | */ |
| 821 | uri = g_strdup_printf("unix:%s/migsocket-recover", tmpfs); |
| 822 | migrate_recover(to, uri); |
| 823 | |
| 824 | /* |
| 825 | * Try to rebuild the migration channel using the resume flag and |
| 826 | * the newly created channel |
| 827 | */ |
| 828 | migrate_qmp(from, to, uri, NULL, "{'resume': true}"); |
| 829 | |
| 830 | /* Restore the postcopy bandwidth to unlimited */ |
| 831 | migrate_set_parameter_int(from, "max-postcopy-bandwidth", 0); |
| 832 | |
| 833 | migrate_postcopy_complete(from, to, hook_data, args); |
| 834 | } |
| 835 | |
| 836 | int test_precopy_common(MigrateCommon *args) |
| 837 | { |
| 838 | QTestState *from, *to; |
| 839 | void *data_hook = NULL; |
| 840 | QObject *channels = NULL; |
| 841 | const char *listen_uri = args->uri ?: "tcp:127.0.0.1:0"; |
| 842 | |
| 843 | if (migrate_start(&from, &to, &args->start)) { |
| 844 | return -1; |
| 845 | } |
| 846 | |
| 847 | if (args->start_hook) { |
| 848 | data_hook = args->start_hook(from, to); |
| 849 | } |
| 850 | |
| 851 | migrate_incoming_qmp(to, listen_uri, NULL, "{}"); |
| 852 | |
| 853 | /* Wait for the first serial output from the source */ |
| 854 | if (args->result == MIG_TEST_SUCCEED) { |
| 855 | wait_for_serial("src_serial"); |
| 856 | wait_for_suspend(from, &src_state); |
| 857 | } |
| 858 | |
| 859 | if (args->live) { |
| 860 | migrate_ensure_non_converge(from); |
| 861 | migrate_prepare_for_dirty_mem(from); |
| 862 | } else { |
| 863 | /* |
| 864 | * Testing non-live migration, we allow it to run at |
| 865 | * full speed to ensure short test case duration. |
| 866 | * For tests expected to fail, we don't need to |
| 867 | * change anything. |
| 868 | */ |
| 869 | if (args->result == MIG_TEST_SUCCEED) { |
| 870 | qtest_qmp_assert_success(from, "{ 'execute' : 'stop'}"); |
| 871 | wait_for_stop(from, &src_state); |
| 872 | migrate_ensure_converge(from); |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | if (args->connect_channels) { |
| 877 | channels = qobject_from_json(args->connect_channels, &error_abort); |
| 878 | } |
| 879 | |
| 880 | if (args->result == MIG_TEST_QMP_ERROR) { |
| 881 | migrate_qmp_fail(from, args->uri, channels, "{}"); |
| 882 | goto finish; |
| 883 | } |
| 884 | |
| 885 | migrate_qmp(from, to, args->uri, channels, "{}"); |
| 886 | |
| 887 | if (args->result != MIG_TEST_SUCCEED) { |
| 888 | bool allow_active = args->result == MIG_TEST_FAIL; |
| 889 | wait_for_migration_fail(from, allow_active); |
| 890 | } else { |
| 891 | if (args->live) { |
| 892 | /* |
| 893 | * For initial iteration(s) we must do a full pass, |
| 894 | * but for the final iteration, we need only wait |
| 895 | * for some dirty mem before switching to converge |
| 896 | */ |
| 897 | while (args->iterations > 1) { |
| 898 | wait_for_migration_pass(from, &src_state); |
| 899 | args->iterations--; |
| 900 | } |
| 901 | migrate_wait_for_dirty_mem(from, to); |
| 902 | |
| 903 | migrate_ensure_converge(from); |
| 904 | |
| 905 | /* |
| 906 | * We do this first, as it has a timeout to stop us |
| 907 | * hanging forever if migration didn't converge |
| 908 | */ |
| 909 | wait_for_migration_complete(from); |
| 910 | |
| 911 | wait_for_stop(from, &src_state); |
| 912 | |
| 913 | } else { |
| 914 | wait_for_migration_complete(from); |
| 915 | /* |
| 916 | * Must wait for dst to finish reading all incoming |
| 917 | * data on the socket before issuing 'cont' otherwise |
| 918 | * it'll be ignored |
| 919 | */ |
| 920 | wait_for_migration_complete(to); |
| 921 | |
| 922 | qtest_qmp_assert_success(to, "{ 'execute' : 'cont'}"); |
| 923 | } |
| 924 | |
| 925 | wait_for_resume(to, &dst_state); |
| 926 | |
| 927 | if (args->start.suspend_me) { |
| 928 | /* wakeup succeeds only if guest is suspended */ |
| 929 | qtest_qmp_assert_success(to, "{'execute': 'system_wakeup'}"); |
| 930 | } |
| 931 | |
| 932 | wait_for_serial("dest_serial"); |
| 933 | } |
| 934 | |
| 935 | finish: |
| 936 | if (args->end_hook) { |
| 937 | args->end_hook(from, to, data_hook); |
| 938 | } |
| 939 | |
| 940 | migrate_end(from, to, args->result == MIG_TEST_SUCCEED); |
| 941 | |
| 942 | return 0; |
| 943 | } |
| 944 | |
| 945 | void test_precopy_unix_common(MigrateCommon *args) |
| 946 | { |
| 947 | g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); |
| 948 | |
| 949 | args->uri = uri; |
| 950 | test_precopy_common(args); |
| 951 | } |
| 952 | |
| 953 | static void file_dirty_offset_region(void) |
| 954 | { |
| 955 | g_autofree char *path = g_strdup_printf("%s/%s", tmpfs, FILE_TEST_FILENAME); |
| 956 | size_t size = FILE_TEST_OFFSET; |
| 957 | g_autofree char *data = g_new0(char, size); |
| 958 | |
| 959 | memset(data, FILE_TEST_MARKER, size); |
| 960 | g_assert(g_file_set_contents(path, data, size, NULL)); |
| 961 | } |
| 962 | |
| 963 | static void file_check_offset_region(void) |
| 964 | { |
| 965 | g_autofree char *path = g_strdup_printf("%s/%s", tmpfs, FILE_TEST_FILENAME); |
| 966 | size_t size = FILE_TEST_OFFSET; |
| 967 | g_autofree char *expected = g_new0(char, size); |
| 968 | g_autofree char *actual = NULL; |
| 969 | uint64_t *stream_start; |
| 970 | |
| 971 | /* |
| 972 | * Ensure the skipped offset region's data has not been touched |
| 973 | * and the migration stream starts at the right place. |
| 974 | */ |
| 975 | |
| 976 | memset(expected, FILE_TEST_MARKER, size); |
| 977 | |
| 978 | g_assert(g_file_get_contents(path, &actual, NULL, NULL)); |
| 979 | g_assert(!memcmp(actual, expected, size)); |
| 980 | |
| 981 | stream_start = (uint64_t *)(actual + size); |
| 982 | g_assert_cmpint(cpu_to_be64(*stream_start) >> 32, ==, QEMU_VM_FILE_MAGIC); |
| 983 | } |
| 984 | |
| 985 | void test_file_common(MigrateCommon *args, bool stop_src) |
| 986 | { |
| 987 | QTestState *from, *to; |
| 988 | void *data_hook = NULL; |
| 989 | bool check_offset = false; |
| 990 | g_autofree char *uri = NULL; |
| 991 | |
| 992 | if (migrate_start(&from, &to, &args->start)) { |
| 993 | return; |
| 994 | } |
| 995 | |
| 996 | if (!args->uri) { |
| 997 | uri = g_strdup_printf("file:%s/%s", tmpfs, FILE_TEST_FILENAME); |
| 998 | args->uri = uri; |
| 999 | } |
| 1000 | |
| 1001 | /* |
| 1002 | * File migration is never live. We can keep the source VM running |
| 1003 | * during migration, but the destination will not be running |
| 1004 | * concurrently. |
| 1005 | */ |
| 1006 | g_assert_false(args->live); |
| 1007 | |
| 1008 | if (g_strrstr(args->uri, "offset=")) { |
| 1009 | check_offset = true; |
| 1010 | /* |
| 1011 | * This comes before the start_hook because it's equivalent to |
| 1012 | * a management application creating the file and writing to |
| 1013 | * it so hooks should expect the file to be already present. |
| 1014 | */ |
| 1015 | file_dirty_offset_region(); |
| 1016 | } |
| 1017 | |
| 1018 | if (args->start_hook) { |
| 1019 | data_hook = args->start_hook(from, to); |
| 1020 | } |
| 1021 | |
| 1022 | migrate_ensure_converge(from); |
| 1023 | wait_for_serial("src_serial"); |
| 1024 | |
| 1025 | if (stop_src) { |
| 1026 | qtest_qmp_assert_success(from, "{ 'execute' : 'stop'}"); |
| 1027 | wait_for_stop(from, &src_state); |
| 1028 | } |
| 1029 | |
| 1030 | if (args->result == MIG_TEST_QMP_ERROR) { |
| 1031 | migrate_qmp_fail(from, args->uri, NULL, "{}"); |
| 1032 | goto finish; |
| 1033 | } |
| 1034 | |
| 1035 | migrate_qmp(from, to, args->uri, NULL, "{}"); |
| 1036 | wait_for_migration_complete(from); |
| 1037 | |
| 1038 | /* |
| 1039 | * We need to wait for the source to finish before starting the |
| 1040 | * destination. |
| 1041 | */ |
| 1042 | migrate_incoming_qmp(to, args->uri, NULL, "{}"); |
| 1043 | wait_for_migration_complete(to); |
| 1044 | |
| 1045 | if (stop_src) { |
| 1046 | qtest_qmp_assert_success(to, "{ 'execute' : 'cont'}"); |
| 1047 | } |
| 1048 | wait_for_resume(to, &dst_state); |
| 1049 | |
| 1050 | wait_for_serial("dest_serial"); |
| 1051 | |
| 1052 | if (check_offset) { |
| 1053 | file_check_offset_region(); |
| 1054 | } |
| 1055 | |
| 1056 | finish: |
| 1057 | if (args->end_hook) { |
| 1058 | args->end_hook(from, to, data_hook); |
| 1059 | } |
| 1060 | |
| 1061 | migrate_end(from, to, args->result == MIG_TEST_SUCCEED); |
| 1062 | } |
| 1063 | |
| 1064 | QTestMigrationState *get_src(void) |
| 1065 | { |
| 1066 | return &src_state; |
| 1067 | } |
| 1068 | |
| 1069 | QTestMigrationState *get_dst(void) |
| 1070 | { |
| 1071 | return &dst_state; |
| 1072 | } |
| 1073 | |
| 1074 | MigrationTestEnv *migration_get_env(void) |
| 1075 | { |
| 1076 | static MigrationTestEnv *env; |
| 1077 | g_autoptr(GError) err = NULL; |
| 1078 | |
| 1079 | if (env) { |
| 1080 | return env; |
| 1081 | } |
| 1082 | |
| 1083 | env = g_new0(MigrationTestEnv, 1); |
| 1084 | env->qemu_src = getenv(QEMU_ENV_SRC); |
| 1085 | env->qemu_dst = getenv(QEMU_ENV_DST); |
| 1086 | |
| 1087 | /* |
| 1088 | * The default QTEST_QEMU_BINARY must always be provided because |
| 1089 | * that is what helpers use to query the accel type and |
| 1090 | * architecture. |
| 1091 | */ |
| 1092 | if (env->qemu_src && env->qemu_dst) { |
| 1093 | g_test_message("Only one of %s, %s is allowed", |
| 1094 | QEMU_ENV_SRC, QEMU_ENV_DST); |
| 1095 | exit(1); |
| 1096 | } |
| 1097 | |
| 1098 | env->has_kvm = qtest_has_accel("kvm"); |
| 1099 | env->has_hvf = qtest_has_accel("hvf"); |
| 1100 | env->has_tcg = qtest_has_accel("tcg"); |
| 1101 | |
| 1102 | if (!env->has_tcg && !env->has_kvm) { |
| 1103 | g_test_skip("No KVM or TCG accelerator available"); |
| 1104 | return env; |
| 1105 | } |
| 1106 | |
| 1107 | env->has_dirty_ring = env->has_kvm && kvm_dirty_ring_supported(); |
| 1108 | env->has_uffd = ufd_version_check(&env->uffd_feature_thread_id); |
| 1109 | env->arch = qtest_get_arch(); |
| 1110 | env->is_x86 = !strcmp(env->arch, "i386") || !strcmp(env->arch, "x86_64"); |
| 1111 | |
| 1112 | env->tmpfs = g_dir_make_tmp("migration-test-XXXXXX", &err); |
| 1113 | if (!env->tmpfs) { |
| 1114 | g_test_message("Can't create temporary directory in %s: %s", |
| 1115 | g_get_tmp_dir(), err->message); |
| 1116 | } |
| 1117 | g_assert(env->tmpfs); |
| 1118 | |
| 1119 | tmpfs = env->tmpfs; |
| 1120 | |
| 1121 | return env; |
| 1122 | } |
| 1123 | |
| 1124 | int migration_env_clean(MigrationTestEnv *env) |
| 1125 | { |
| 1126 | char *tmpfs; |
| 1127 | int ret = 0; |
| 1128 | |
| 1129 | if (!env) { |
| 1130 | return ret; |
| 1131 | } |
| 1132 | |
| 1133 | bootfile_delete(); |
| 1134 | |
| 1135 | tmpfs = env->tmpfs; |
| 1136 | ret = rmdir(tmpfs); |
| 1137 | if (ret != 0) { |
| 1138 | g_test_message("unable to rmdir: path (%s): %s", |
| 1139 | tmpfs, strerror(errno)); |
| 1140 | } |
| 1141 | g_free(tmpfs); |
| 1142 | |
| 1143 | migration_tests_free(); |
| 1144 | |
| 1145 | return ret; |
| 1146 | } |