| 1 | /* |
| 2 | * Block tests for iothreads |
| 3 | * |
| 4 | * Copyright (c) 2018 Kevin Wolf <kwolf@redhat.com> |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include "qemu/osdep.h" |
| 26 | #include "block/block.h" |
| 27 | #include "block/block_int-global-state.h" |
| 28 | #include "block/blockjob_int.h" |
| 29 | #include "system/block-backend.h" |
| 30 | #include "qapi/error.h" |
| 31 | #include "qobject/qdict.h" |
| 32 | #include "qemu/main-loop.h" |
| 33 | #include "iothread.h" |
| 34 | |
| 35 | static int coroutine_fn bdrv_test_co_preadv(BlockDriverState *bs, |
| 36 | int64_t offset, int64_t bytes, |
| 37 | QEMUIOVector *qiov, |
| 38 | BdrvRequestFlags flags) |
| 39 | { |
| 40 | return 0; |
| 41 | } |
| 42 | |
| 43 | static int coroutine_fn bdrv_test_co_pwritev(BlockDriverState *bs, |
| 44 | int64_t offset, int64_t bytes, |
| 45 | QEMUIOVector *qiov, |
| 46 | BdrvRequestFlags flags) |
| 47 | { |
| 48 | return 0; |
| 49 | } |
| 50 | |
| 51 | static int coroutine_fn bdrv_test_co_pdiscard(BlockDriverState *bs, |
| 52 | int64_t offset, int64_t bytes) |
| 53 | { |
| 54 | return 0; |
| 55 | } |
| 56 | |
| 57 | static int coroutine_fn |
| 58 | bdrv_test_co_truncate(BlockDriverState *bs, int64_t offset, bool exact, |
| 59 | PreallocMode prealloc, BdrvRequestFlags flags, |
| 60 | Error **errp) |
| 61 | { |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | static int coroutine_fn bdrv_test_co_block_status(BlockDriverState *bs, |
| 66 | unsigned int mode, |
| 67 | int64_t offset, int64_t count, |
| 68 | int64_t *pnum, int64_t *map, |
| 69 | BlockDriverState **file) |
| 70 | { |
| 71 | *pnum = count; |
| 72 | return 0; |
| 73 | } |
| 74 | |
| 75 | static BlockDriver bdrv_test = { |
| 76 | .format_name = "test", |
| 77 | .instance_size = 1, |
| 78 | |
| 79 | .bdrv_co_preadv = bdrv_test_co_preadv, |
| 80 | .bdrv_co_pwritev = bdrv_test_co_pwritev, |
| 81 | .bdrv_co_pdiscard = bdrv_test_co_pdiscard, |
| 82 | .bdrv_co_truncate = bdrv_test_co_truncate, |
| 83 | .bdrv_co_block_status = bdrv_test_co_block_status, |
| 84 | }; |
| 85 | |
| 86 | static void test_sync_op_pread(BdrvChild *c) |
| 87 | { |
| 88 | uint8_t buf[512]; |
| 89 | int ret; |
| 90 | |
| 91 | /* Success */ |
| 92 | ret = bdrv_pread(c, 0, sizeof(buf), buf, 0); |
| 93 | g_assert_cmpint(ret, ==, 0); |
| 94 | |
| 95 | /* Early error: Negative offset */ |
| 96 | ret = bdrv_pread(c, -2, sizeof(buf), buf, 0); |
| 97 | g_assert_cmpint(ret, ==, -EIO); |
| 98 | } |
| 99 | |
| 100 | static void test_sync_op_pwrite(BdrvChild *c) |
| 101 | { |
| 102 | uint8_t buf[512] = { 0 }; |
| 103 | int ret; |
| 104 | |
| 105 | /* Success */ |
| 106 | ret = bdrv_pwrite(c, 0, sizeof(buf), buf, 0); |
| 107 | g_assert_cmpint(ret, ==, 0); |
| 108 | |
| 109 | /* Early error: Negative offset */ |
| 110 | ret = bdrv_pwrite(c, -2, sizeof(buf), buf, 0); |
| 111 | g_assert_cmpint(ret, ==, -EIO); |
| 112 | } |
| 113 | |
| 114 | static void test_sync_op_blk_pread(BlockBackend *blk) |
| 115 | { |
| 116 | uint8_t buf[512]; |
| 117 | int ret; |
| 118 | |
| 119 | /* Success */ |
| 120 | ret = blk_pread(blk, 0, sizeof(buf), buf, 0); |
| 121 | g_assert_cmpint(ret, ==, 0); |
| 122 | |
| 123 | /* Early error: Negative offset */ |
| 124 | ret = blk_pread(blk, -2, sizeof(buf), buf, 0); |
| 125 | g_assert_cmpint(ret, ==, -EIO); |
| 126 | } |
| 127 | |
| 128 | static void test_sync_op_blk_pwrite(BlockBackend *blk) |
| 129 | { |
| 130 | uint8_t buf[512] = { 0 }; |
| 131 | int ret; |
| 132 | |
| 133 | /* Success */ |
| 134 | ret = blk_pwrite(blk, 0, sizeof(buf), buf, 0); |
| 135 | g_assert_cmpint(ret, ==, 0); |
| 136 | |
| 137 | /* Early error: Negative offset */ |
| 138 | ret = blk_pwrite(blk, -2, sizeof(buf), buf, 0); |
| 139 | g_assert_cmpint(ret, ==, -EIO); |
| 140 | } |
| 141 | |
| 142 | static void test_sync_op_blk_preadv(BlockBackend *blk) |
| 143 | { |
| 144 | uint8_t buf[512]; |
| 145 | QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, sizeof(buf)); |
| 146 | int ret; |
| 147 | |
| 148 | /* Success */ |
| 149 | ret = blk_preadv(blk, 0, sizeof(buf), &qiov, 0); |
| 150 | g_assert_cmpint(ret, ==, 0); |
| 151 | |
| 152 | /* Early error: Negative offset */ |
| 153 | ret = blk_preadv(blk, -2, sizeof(buf), &qiov, 0); |
| 154 | g_assert_cmpint(ret, ==, -EIO); |
| 155 | } |
| 156 | |
| 157 | static void test_sync_op_blk_pwritev(BlockBackend *blk) |
| 158 | { |
| 159 | uint8_t buf[512] = { 0 }; |
| 160 | QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, sizeof(buf)); |
| 161 | int ret; |
| 162 | |
| 163 | /* Success */ |
| 164 | ret = blk_pwritev(blk, 0, sizeof(buf), &qiov, 0); |
| 165 | g_assert_cmpint(ret, ==, 0); |
| 166 | |
| 167 | /* Early error: Negative offset */ |
| 168 | ret = blk_pwritev(blk, -2, sizeof(buf), &qiov, 0); |
| 169 | g_assert_cmpint(ret, ==, -EIO); |
| 170 | } |
| 171 | |
| 172 | static void test_sync_op_blk_preadv_part(BlockBackend *blk) |
| 173 | { |
| 174 | uint8_t buf[512]; |
| 175 | QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, sizeof(buf)); |
| 176 | int ret; |
| 177 | |
| 178 | /* Success */ |
| 179 | ret = blk_preadv_part(blk, 0, sizeof(buf), &qiov, 0, 0); |
| 180 | g_assert_cmpint(ret, ==, 0); |
| 181 | |
| 182 | /* Early error: Negative offset */ |
| 183 | ret = blk_preadv_part(blk, -2, sizeof(buf), &qiov, 0, 0); |
| 184 | g_assert_cmpint(ret, ==, -EIO); |
| 185 | } |
| 186 | |
| 187 | static void test_sync_op_blk_pwritev_part(BlockBackend *blk) |
| 188 | { |
| 189 | uint8_t buf[512] = { 0 }; |
| 190 | QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, sizeof(buf)); |
| 191 | int ret; |
| 192 | |
| 193 | /* Success */ |
| 194 | ret = blk_pwritev_part(blk, 0, sizeof(buf), &qiov, 0, 0); |
| 195 | g_assert_cmpint(ret, ==, 0); |
| 196 | |
| 197 | /* Early error: Negative offset */ |
| 198 | ret = blk_pwritev_part(blk, -2, sizeof(buf), &qiov, 0, 0); |
| 199 | g_assert_cmpint(ret, ==, -EIO); |
| 200 | } |
| 201 | |
| 202 | static void test_sync_op_blk_pwrite_compressed(BlockBackend *blk) |
| 203 | { |
| 204 | uint8_t buf[512] = { 0 }; |
| 205 | int ret; |
| 206 | |
| 207 | /* Late error: Not supported */ |
| 208 | ret = blk_pwrite_compressed(blk, 0, sizeof(buf), buf); |
| 209 | g_assert_cmpint(ret, ==, -ENOTSUP); |
| 210 | |
| 211 | /* Early error: Negative offset */ |
| 212 | ret = blk_pwrite_compressed(blk, -2, sizeof(buf), buf); |
| 213 | g_assert_cmpint(ret, ==, -EIO); |
| 214 | } |
| 215 | |
| 216 | static void test_sync_op_blk_pwrite_zeroes(BlockBackend *blk) |
| 217 | { |
| 218 | int ret; |
| 219 | |
| 220 | /* Success */ |
| 221 | ret = blk_pwrite_zeroes(blk, 0, 512, 0); |
| 222 | g_assert_cmpint(ret, ==, 0); |
| 223 | |
| 224 | /* Early error: Negative offset */ |
| 225 | ret = blk_pwrite_zeroes(blk, -2, 512, 0); |
| 226 | g_assert_cmpint(ret, ==, -EIO); |
| 227 | } |
| 228 | |
| 229 | static void test_sync_op_load_vmstate(BdrvChild *c) |
| 230 | { |
| 231 | uint8_t buf[512]; |
| 232 | int ret; |
| 233 | |
| 234 | /* Error: Driver does not support snapshots */ |
| 235 | ret = bdrv_load_vmstate(c->bs, buf, 0, sizeof(buf)); |
| 236 | g_assert_cmpint(ret, ==, -ENOTSUP); |
| 237 | } |
| 238 | |
| 239 | static void test_sync_op_save_vmstate(BdrvChild *c) |
| 240 | { |
| 241 | uint8_t buf[512] = { 0 }; |
| 242 | int ret; |
| 243 | |
| 244 | /* Error: Driver does not support snapshots */ |
| 245 | ret = bdrv_save_vmstate(c->bs, buf, 0, sizeof(buf)); |
| 246 | g_assert_cmpint(ret, ==, -ENOTSUP); |
| 247 | } |
| 248 | |
| 249 | static void test_sync_op_pdiscard(BdrvChild *c) |
| 250 | { |
| 251 | int ret; |
| 252 | |
| 253 | /* Normal success path */ |
| 254 | c->bs->open_flags |= BDRV_O_UNMAP; |
| 255 | ret = bdrv_pdiscard(c, 0, 512); |
| 256 | g_assert_cmpint(ret, ==, 0); |
| 257 | |
| 258 | /* Early success: UNMAP not supported */ |
| 259 | c->bs->open_flags &= ~BDRV_O_UNMAP; |
| 260 | ret = bdrv_pdiscard(c, 0, 512); |
| 261 | g_assert_cmpint(ret, ==, 0); |
| 262 | |
| 263 | /* Early error: Negative offset */ |
| 264 | ret = bdrv_pdiscard(c, -2, 512); |
| 265 | g_assert_cmpint(ret, ==, -EIO); |
| 266 | } |
| 267 | |
| 268 | static void test_sync_op_blk_pdiscard(BlockBackend *blk) |
| 269 | { |
| 270 | int ret; |
| 271 | |
| 272 | /* Early success: UNMAP not supported */ |
| 273 | ret = blk_pdiscard(blk, 0, 512, 0); |
| 274 | g_assert_cmpint(ret, ==, 0); |
| 275 | |
| 276 | /* Early error: Negative offset */ |
| 277 | ret = blk_pdiscard(blk, -2, 512, 0); |
| 278 | g_assert_cmpint(ret, ==, -EIO); |
| 279 | } |
| 280 | |
| 281 | static void test_sync_op_truncate(BdrvChild *c) |
| 282 | { |
| 283 | int ret; |
| 284 | |
| 285 | /* Normal success path */ |
| 286 | ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, 0, NULL); |
| 287 | g_assert_cmpint(ret, ==, 0); |
| 288 | |
| 289 | /* Early error: Negative offset */ |
| 290 | ret = bdrv_truncate(c, -2, false, PREALLOC_MODE_OFF, 0, NULL); |
| 291 | g_assert_cmpint(ret, ==, -EINVAL); |
| 292 | |
| 293 | /* Error: Read-only image */ |
| 294 | c->bs->open_flags &= ~BDRV_O_RDWR; |
| 295 | |
| 296 | ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, 0, NULL); |
| 297 | g_assert_cmpint(ret, ==, -EACCES); |
| 298 | |
| 299 | c->bs->open_flags |= BDRV_O_RDWR; |
| 300 | } |
| 301 | |
| 302 | static void test_sync_op_blk_truncate(BlockBackend *blk) |
| 303 | { |
| 304 | int ret; |
| 305 | |
| 306 | /* Normal success path */ |
| 307 | ret = blk_truncate(blk, 65536, false, PREALLOC_MODE_OFF, 0, NULL); |
| 308 | g_assert_cmpint(ret, ==, 0); |
| 309 | |
| 310 | /* Early error: Negative offset */ |
| 311 | ret = blk_truncate(blk, -2, false, PREALLOC_MODE_OFF, 0, NULL); |
| 312 | g_assert_cmpint(ret, ==, -EINVAL); |
| 313 | } |
| 314 | |
| 315 | /* Disable TSA to make bdrv_test.bdrv_co_block_status writable */ |
| 316 | static void TSA_NO_TSA test_sync_op_block_status(BdrvChild *c) |
| 317 | { |
| 318 | int ret; |
| 319 | int64_t n; |
| 320 | |
| 321 | /* Normal success path */ |
| 322 | ret = bdrv_is_allocated(c->bs, 0, 65536, &n); |
| 323 | g_assert_cmpint(ret, ==, 0); |
| 324 | |
| 325 | /* Early success: No driver support */ |
| 326 | bdrv_test.bdrv_co_block_status = NULL; |
| 327 | ret = bdrv_is_allocated(c->bs, 0, 65536, &n); |
| 328 | g_assert_cmpint(ret, ==, 1); |
| 329 | |
| 330 | /* Early success: bytes = 0 */ |
| 331 | ret = bdrv_is_allocated(c->bs, 0, 0, &n); |
| 332 | g_assert_cmpint(ret, ==, 0); |
| 333 | |
| 334 | /* Early success: Offset > image size*/ |
| 335 | ret = bdrv_is_allocated(c->bs, 0x1000000, 0x1000000, &n); |
| 336 | g_assert_cmpint(ret, ==, 0); |
| 337 | } |
| 338 | |
| 339 | static void test_sync_op_flush(BdrvChild *c) |
| 340 | { |
| 341 | int ret; |
| 342 | |
| 343 | /* Normal success path */ |
| 344 | ret = bdrv_flush(c->bs); |
| 345 | g_assert_cmpint(ret, ==, 0); |
| 346 | |
| 347 | /* Early success: Read-only image */ |
| 348 | c->bs->open_flags &= ~BDRV_O_RDWR; |
| 349 | |
| 350 | ret = bdrv_flush(c->bs); |
| 351 | g_assert_cmpint(ret, ==, 0); |
| 352 | |
| 353 | c->bs->open_flags |= BDRV_O_RDWR; |
| 354 | } |
| 355 | |
| 356 | static void test_sync_op_blk_flush(BlockBackend *blk) |
| 357 | { |
| 358 | BlockDriverState *bs = blk_bs(blk); |
| 359 | int ret; |
| 360 | |
| 361 | /* Normal success path */ |
| 362 | ret = blk_flush(blk); |
| 363 | g_assert_cmpint(ret, ==, 0); |
| 364 | |
| 365 | /* Early success: Read-only image */ |
| 366 | bs->open_flags &= ~BDRV_O_RDWR; |
| 367 | |
| 368 | ret = blk_flush(blk); |
| 369 | g_assert_cmpint(ret, ==, 0); |
| 370 | |
| 371 | bs->open_flags |= BDRV_O_RDWR; |
| 372 | } |
| 373 | |
| 374 | static void test_sync_op_check(BdrvChild *c) |
| 375 | { |
| 376 | BdrvCheckResult result; |
| 377 | int ret; |
| 378 | |
| 379 | /* Error: Driver does not implement check */ |
| 380 | ret = bdrv_check(c->bs, &result, 0); |
| 381 | g_assert_cmpint(ret, ==, -ENOTSUP); |
| 382 | } |
| 383 | |
| 384 | static void test_sync_op_activate(BdrvChild *c) |
| 385 | { |
| 386 | GLOBAL_STATE_CODE(); |
| 387 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 388 | |
| 389 | /* Early success: Image is not inactive */ |
| 390 | bdrv_activate(c->bs, NULL); |
| 391 | } |
| 392 | |
| 393 | |
| 394 | typedef struct SyncOpTest { |
| 395 | const char *name; |
| 396 | void (*fn)(BdrvChild *c); |
| 397 | void (*blkfn)(BlockBackend *blk); |
| 398 | } SyncOpTest; |
| 399 | |
| 400 | const SyncOpTest sync_op_tests[] = { |
| 401 | { |
| 402 | .name = "/sync-op/pread", |
| 403 | .fn = test_sync_op_pread, |
| 404 | .blkfn = test_sync_op_blk_pread, |
| 405 | }, { |
| 406 | .name = "/sync-op/pwrite", |
| 407 | .fn = test_sync_op_pwrite, |
| 408 | .blkfn = test_sync_op_blk_pwrite, |
| 409 | }, { |
| 410 | .name = "/sync-op/preadv", |
| 411 | .fn = NULL, |
| 412 | .blkfn = test_sync_op_blk_preadv, |
| 413 | }, { |
| 414 | .name = "/sync-op/pwritev", |
| 415 | .fn = NULL, |
| 416 | .blkfn = test_sync_op_blk_pwritev, |
| 417 | }, { |
| 418 | .name = "/sync-op/preadv_part", |
| 419 | .fn = NULL, |
| 420 | .blkfn = test_sync_op_blk_preadv_part, |
| 421 | }, { |
| 422 | .name = "/sync-op/pwritev_part", |
| 423 | .fn = NULL, |
| 424 | .blkfn = test_sync_op_blk_pwritev_part, |
| 425 | }, { |
| 426 | .name = "/sync-op/pwrite_compressed", |
| 427 | .fn = NULL, |
| 428 | .blkfn = test_sync_op_blk_pwrite_compressed, |
| 429 | }, { |
| 430 | .name = "/sync-op/pwrite_zeroes", |
| 431 | .fn = NULL, |
| 432 | .blkfn = test_sync_op_blk_pwrite_zeroes, |
| 433 | }, { |
| 434 | .name = "/sync-op/load_vmstate", |
| 435 | .fn = test_sync_op_load_vmstate, |
| 436 | }, { |
| 437 | .name = "/sync-op/save_vmstate", |
| 438 | .fn = test_sync_op_save_vmstate, |
| 439 | }, { |
| 440 | .name = "/sync-op/pdiscard", |
| 441 | .fn = test_sync_op_pdiscard, |
| 442 | .blkfn = test_sync_op_blk_pdiscard, |
| 443 | }, { |
| 444 | .name = "/sync-op/truncate", |
| 445 | .fn = test_sync_op_truncate, |
| 446 | .blkfn = test_sync_op_blk_truncate, |
| 447 | }, { |
| 448 | .name = "/sync-op/block_status", |
| 449 | .fn = test_sync_op_block_status, |
| 450 | }, { |
| 451 | .name = "/sync-op/flush", |
| 452 | .fn = test_sync_op_flush, |
| 453 | .blkfn = test_sync_op_blk_flush, |
| 454 | }, { |
| 455 | .name = "/sync-op/check", |
| 456 | .fn = test_sync_op_check, |
| 457 | }, { |
| 458 | .name = "/sync-op/activate", |
| 459 | .fn = test_sync_op_activate, |
| 460 | }, |
| 461 | }; |
| 462 | |
| 463 | /* Test synchronous operations that run in a different iothread, so we have to |
| 464 | * poll for the coroutine there to return. */ |
| 465 | static void test_sync_op(const void *opaque) |
| 466 | { |
| 467 | const SyncOpTest *t = opaque; |
| 468 | IOThread *iothread = iothread_new(); |
| 469 | AioContext *ctx = iothread_get_aio_context(iothread); |
| 470 | BlockBackend *blk; |
| 471 | BlockDriverState *bs; |
| 472 | BdrvChild *c; |
| 473 | |
| 474 | GLOBAL_STATE_CODE(); |
| 475 | |
| 476 | blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL, BLK_PERM_ALL); |
| 477 | bs = bdrv_new_open_driver(&bdrv_test, "base", BDRV_O_RDWR, &error_abort); |
| 478 | bs->total_sectors = 65536 / BDRV_SECTOR_SIZE; |
| 479 | blk_insert_bs(blk, bs, &error_abort); |
| 480 | |
| 481 | bdrv_graph_rdlock_main_loop(); |
| 482 | c = QLIST_FIRST(&bs->parents); |
| 483 | bdrv_graph_rdunlock_main_loop(); |
| 484 | |
| 485 | blk_set_aio_context(blk, ctx, &error_abort); |
| 486 | if (t->fn) { |
| 487 | t->fn(c); |
| 488 | } |
| 489 | if (t->blkfn) { |
| 490 | t->blkfn(blk); |
| 491 | } |
| 492 | blk_set_aio_context(blk, qemu_get_aio_context(), &error_abort); |
| 493 | |
| 494 | bdrv_unref(bs); |
| 495 | blk_unref(blk); |
| 496 | } |
| 497 | |
| 498 | typedef struct TestBlockJob { |
| 499 | BlockJob common; |
| 500 | bool should_complete; |
| 501 | int n; |
| 502 | } TestBlockJob; |
| 503 | |
| 504 | static int test_job_prepare(Job *job) |
| 505 | { |
| 506 | g_assert(qemu_get_current_aio_context() == qemu_get_aio_context()); |
| 507 | return 0; |
| 508 | } |
| 509 | |
| 510 | static int coroutine_fn test_job_run(Job *job, Error **errp) |
| 511 | { |
| 512 | TestBlockJob *s = container_of(job, TestBlockJob, common.job); |
| 513 | |
| 514 | job_transition_to_ready(&s->common.job); |
| 515 | while (!s->should_complete) { |
| 516 | s->n++; |
| 517 | g_assert(qemu_get_current_aio_context() == job->aio_context); |
| 518 | |
| 519 | /* Avoid job_sleep_ns() because it marks the job as !busy. We want to |
| 520 | * emulate some actual activity (probably some I/O) here so that the |
| 521 | * drain involved in AioContext switches has to wait for this activity |
| 522 | * to stop. */ |
| 523 | qemu_co_sleep_ns(QEMU_CLOCK_REALTIME, 1000000); |
| 524 | |
| 525 | job_pause_point(&s->common.job); |
| 526 | } |
| 527 | |
| 528 | g_assert(qemu_get_current_aio_context() == job->aio_context); |
| 529 | return 0; |
| 530 | } |
| 531 | |
| 532 | static void test_job_complete(Job *job, Error **errp) |
| 533 | { |
| 534 | TestBlockJob *s = container_of(job, TestBlockJob, common.job); |
| 535 | s->should_complete = true; |
| 536 | } |
| 537 | |
| 538 | BlockJobDriver test_job_driver = { |
| 539 | .job_driver = { |
| 540 | .instance_size = sizeof(TestBlockJob), |
| 541 | .free = block_job_free, |
| 542 | .user_resume = block_job_user_resume, |
| 543 | .run = test_job_run, |
| 544 | .complete = test_job_complete, |
| 545 | .prepare = test_job_prepare, |
| 546 | }, |
| 547 | }; |
| 548 | |
| 549 | static void test_attach_blockjob(void) |
| 550 | { |
| 551 | IOThread *iothread = iothread_new(); |
| 552 | AioContext *ctx = iothread_get_aio_context(iothread); |
| 553 | BlockBackend *blk; |
| 554 | BlockDriverState *bs; |
| 555 | TestBlockJob *tjob; |
| 556 | |
| 557 | blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL, BLK_PERM_ALL); |
| 558 | bs = bdrv_new_open_driver(&bdrv_test, "base", BDRV_O_RDWR, &error_abort); |
| 559 | blk_insert_bs(blk, bs, &error_abort); |
| 560 | |
| 561 | tjob = block_job_create("job0", &test_job_driver, NULL, bs, |
| 562 | 0, BLK_PERM_ALL, |
| 563 | 0, 0, NULL, NULL, &error_abort); |
| 564 | job_start(&tjob->common.job); |
| 565 | |
| 566 | while (tjob->n == 0) { |
| 567 | aio_poll(qemu_get_aio_context(), false); |
| 568 | } |
| 569 | |
| 570 | blk_set_aio_context(blk, ctx, &error_abort); |
| 571 | |
| 572 | tjob->n = 0; |
| 573 | while (tjob->n == 0) { |
| 574 | aio_poll(qemu_get_aio_context(), false); |
| 575 | } |
| 576 | |
| 577 | blk_set_aio_context(blk, qemu_get_aio_context(), &error_abort); |
| 578 | |
| 579 | tjob->n = 0; |
| 580 | while (tjob->n == 0) { |
| 581 | aio_poll(qemu_get_aio_context(), false); |
| 582 | } |
| 583 | |
| 584 | blk_set_aio_context(blk, ctx, &error_abort); |
| 585 | |
| 586 | tjob->n = 0; |
| 587 | while (tjob->n == 0) { |
| 588 | aio_poll(qemu_get_aio_context(), false); |
| 589 | } |
| 590 | |
| 591 | WITH_JOB_LOCK_GUARD() { |
| 592 | job_complete_sync_locked(&tjob->common.job, &error_abort); |
| 593 | } |
| 594 | blk_set_aio_context(blk, qemu_get_aio_context(), &error_abort); |
| 595 | |
| 596 | bdrv_unref(bs); |
| 597 | blk_unref(blk); |
| 598 | } |
| 599 | |
| 600 | /* |
| 601 | * Test that changing the AioContext for one node in a tree (here through blk) |
| 602 | * changes all other nodes as well: |
| 603 | * |
| 604 | * blk |
| 605 | * | |
| 606 | * | bs_verify [blkverify] |
| 607 | * | / \ |
| 608 | * | / \ |
| 609 | * bs_a [bdrv_test] bs_b [bdrv_test] |
| 610 | * |
| 611 | */ |
| 612 | static void test_propagate_basic(void) |
| 613 | { |
| 614 | IOThread *iothread = iothread_new(); |
| 615 | AioContext *ctx = iothread_get_aio_context(iothread); |
| 616 | AioContext *main_ctx; |
| 617 | BlockBackend *blk; |
| 618 | BlockDriverState *bs_a, *bs_b, *bs_verify; |
| 619 | QDict *options; |
| 620 | |
| 621 | /* |
| 622 | * Create bs_a and its BlockBackend. We cannot take the RESIZE |
| 623 | * permission because blkverify will not share it on the test |
| 624 | * image. |
| 625 | */ |
| 626 | blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL & ~BLK_PERM_RESIZE, |
| 627 | BLK_PERM_ALL); |
| 628 | bs_a = bdrv_new_open_driver(&bdrv_test, "bs_a", BDRV_O_RDWR, &error_abort); |
| 629 | blk_insert_bs(blk, bs_a, &error_abort); |
| 630 | |
| 631 | /* Create bs_b */ |
| 632 | bs_b = bdrv_new_open_driver(&bdrv_test, "bs_b", BDRV_O_RDWR, &error_abort); |
| 633 | |
| 634 | /* Create blkverify filter that references both bs_a and bs_b */ |
| 635 | options = qdict_new(); |
| 636 | qdict_put_str(options, "driver", "blkverify"); |
| 637 | qdict_put_str(options, "test", "bs_a"); |
| 638 | qdict_put_str(options, "raw", "bs_b"); |
| 639 | |
| 640 | bs_verify = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort); |
| 641 | |
| 642 | /* Switch the AioContext */ |
| 643 | blk_set_aio_context(blk, ctx, &error_abort); |
| 644 | g_assert(blk_get_aio_context(blk) == ctx); |
| 645 | g_assert(bdrv_get_aio_context(bs_a) == ctx); |
| 646 | g_assert(bdrv_get_aio_context(bs_verify) == ctx); |
| 647 | g_assert(bdrv_get_aio_context(bs_b) == ctx); |
| 648 | |
| 649 | /* Switch the AioContext back */ |
| 650 | main_ctx = qemu_get_aio_context(); |
| 651 | blk_set_aio_context(blk, main_ctx, &error_abort); |
| 652 | g_assert(blk_get_aio_context(blk) == main_ctx); |
| 653 | g_assert(bdrv_get_aio_context(bs_a) == main_ctx); |
| 654 | g_assert(bdrv_get_aio_context(bs_verify) == main_ctx); |
| 655 | g_assert(bdrv_get_aio_context(bs_b) == main_ctx); |
| 656 | |
| 657 | bdrv_unref(bs_verify); |
| 658 | bdrv_unref(bs_b); |
| 659 | bdrv_unref(bs_a); |
| 660 | blk_unref(blk); |
| 661 | } |
| 662 | |
| 663 | /* |
| 664 | * Test that diamonds in the graph don't lead to endless recursion: |
| 665 | * |
| 666 | * blk |
| 667 | * | |
| 668 | * bs_verify [blkverify] |
| 669 | * / \ |
| 670 | * / \ |
| 671 | * bs_b [raw] bs_c[raw] |
| 672 | * \ / |
| 673 | * \ / |
| 674 | * bs_a [bdrv_test] |
| 675 | */ |
| 676 | static void test_propagate_diamond(void) |
| 677 | { |
| 678 | IOThread *iothread = iothread_new(); |
| 679 | AioContext *ctx = iothread_get_aio_context(iothread); |
| 680 | AioContext *main_ctx; |
| 681 | BlockBackend *blk; |
| 682 | BlockDriverState *bs_a, *bs_b, *bs_c, *bs_verify; |
| 683 | QDict *options; |
| 684 | |
| 685 | /* Create bs_a */ |
| 686 | bs_a = bdrv_new_open_driver(&bdrv_test, "bs_a", BDRV_O_RDWR, &error_abort); |
| 687 | |
| 688 | /* Create bs_b and bc_c */ |
| 689 | options = qdict_new(); |
| 690 | qdict_put_str(options, "driver", "raw"); |
| 691 | qdict_put_str(options, "file", "bs_a"); |
| 692 | qdict_put_str(options, "node-name", "bs_b"); |
| 693 | bs_b = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort); |
| 694 | |
| 695 | options = qdict_new(); |
| 696 | qdict_put_str(options, "driver", "raw"); |
| 697 | qdict_put_str(options, "file", "bs_a"); |
| 698 | qdict_put_str(options, "node-name", "bs_c"); |
| 699 | bs_c = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort); |
| 700 | |
| 701 | /* Create blkverify filter that references both bs_b and bs_c */ |
| 702 | options = qdict_new(); |
| 703 | qdict_put_str(options, "driver", "blkverify"); |
| 704 | qdict_put_str(options, "test", "bs_b"); |
| 705 | qdict_put_str(options, "raw", "bs_c"); |
| 706 | |
| 707 | bs_verify = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort); |
| 708 | /* |
| 709 | * Do not take the RESIZE permission: This would require the same |
| 710 | * from bs_c and thus from bs_a; however, blkverify will not share |
| 711 | * it on bs_b, and thus it will not be available for bs_a. |
| 712 | */ |
| 713 | blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL & ~BLK_PERM_RESIZE, |
| 714 | BLK_PERM_ALL); |
| 715 | blk_insert_bs(blk, bs_verify, &error_abort); |
| 716 | |
| 717 | /* Switch the AioContext */ |
| 718 | blk_set_aio_context(blk, ctx, &error_abort); |
| 719 | g_assert(blk_get_aio_context(blk) == ctx); |
| 720 | g_assert(bdrv_get_aio_context(bs_verify) == ctx); |
| 721 | g_assert(bdrv_get_aio_context(bs_a) == ctx); |
| 722 | g_assert(bdrv_get_aio_context(bs_b) == ctx); |
| 723 | g_assert(bdrv_get_aio_context(bs_c) == ctx); |
| 724 | |
| 725 | /* Switch the AioContext back */ |
| 726 | main_ctx = qemu_get_aio_context(); |
| 727 | blk_set_aio_context(blk, main_ctx, &error_abort); |
| 728 | g_assert(blk_get_aio_context(blk) == main_ctx); |
| 729 | g_assert(bdrv_get_aio_context(bs_verify) == main_ctx); |
| 730 | g_assert(bdrv_get_aio_context(bs_a) == main_ctx); |
| 731 | g_assert(bdrv_get_aio_context(bs_b) == main_ctx); |
| 732 | g_assert(bdrv_get_aio_context(bs_c) == main_ctx); |
| 733 | |
| 734 | blk_unref(blk); |
| 735 | bdrv_unref(bs_verify); |
| 736 | bdrv_unref(bs_c); |
| 737 | bdrv_unref(bs_b); |
| 738 | bdrv_unref(bs_a); |
| 739 | } |
| 740 | |
| 741 | static void test_propagate_mirror(void) |
| 742 | { |
| 743 | IOThread *iothread = iothread_new(); |
| 744 | AioContext *ctx = iothread_get_aio_context(iothread); |
| 745 | AioContext *main_ctx = qemu_get_aio_context(); |
| 746 | BlockDriverState *src, *target, *filter; |
| 747 | BlockBackend *blk; |
| 748 | Job *job = NULL; |
| 749 | Error *local_err = NULL; |
| 750 | |
| 751 | /* Create src and target*/ |
| 752 | src = bdrv_new_open_driver(&bdrv_test, "src", BDRV_O_RDWR, &error_abort); |
| 753 | target = bdrv_new_open_driver(&bdrv_test, "target", BDRV_O_RDWR, |
| 754 | &error_abort); |
| 755 | |
| 756 | /* Start a mirror job */ |
| 757 | mirror_start("job0", src, target, NULL, JOB_DEFAULT, 0, 0, 0, |
| 758 | MIRROR_SYNC_MODE_NONE, MIRROR_OPEN_BACKING_CHAIN, false, |
| 759 | BLOCKDEV_ON_ERROR_REPORT, BLOCKDEV_ON_ERROR_REPORT, |
| 760 | false, "filter_node", MIRROR_COPY_MODE_BACKGROUND, |
| 761 | &error_abort); |
| 762 | |
| 763 | WITH_JOB_LOCK_GUARD() { |
| 764 | job = job_get_locked("job0"); |
| 765 | } |
| 766 | filter = bdrv_find_node("filter_node"); |
| 767 | |
| 768 | /* Change the AioContext of src */ |
| 769 | bdrv_try_change_aio_context(src, ctx, NULL, &error_abort); |
| 770 | g_assert(bdrv_get_aio_context(src) == ctx); |
| 771 | g_assert(bdrv_get_aio_context(target) == ctx); |
| 772 | g_assert(bdrv_get_aio_context(filter) == ctx); |
| 773 | g_assert(job->aio_context == ctx); |
| 774 | |
| 775 | /* Change the AioContext of target */ |
| 776 | bdrv_try_change_aio_context(target, main_ctx, NULL, &error_abort); |
| 777 | g_assert(bdrv_get_aio_context(src) == main_ctx); |
| 778 | g_assert(bdrv_get_aio_context(target) == main_ctx); |
| 779 | g_assert(bdrv_get_aio_context(filter) == main_ctx); |
| 780 | |
| 781 | /* With a BlockBackend on src, changing target must fail */ |
| 782 | blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); |
| 783 | blk_insert_bs(blk, src, &error_abort); |
| 784 | |
| 785 | bdrv_try_change_aio_context(target, ctx, NULL, &local_err); |
| 786 | error_free_or_abort(&local_err); |
| 787 | |
| 788 | g_assert(blk_get_aio_context(blk) == main_ctx); |
| 789 | g_assert(bdrv_get_aio_context(src) == main_ctx); |
| 790 | g_assert(bdrv_get_aio_context(target) == main_ctx); |
| 791 | g_assert(bdrv_get_aio_context(filter) == main_ctx); |
| 792 | |
| 793 | /* ...unless we explicitly allow it */ |
| 794 | blk_set_allow_aio_context_change(blk, true); |
| 795 | bdrv_try_change_aio_context(target, ctx, NULL, &error_abort); |
| 796 | |
| 797 | g_assert(blk_get_aio_context(blk) == ctx); |
| 798 | g_assert(bdrv_get_aio_context(src) == ctx); |
| 799 | g_assert(bdrv_get_aio_context(target) == ctx); |
| 800 | g_assert(bdrv_get_aio_context(filter) == ctx); |
| 801 | |
| 802 | job_cancel_sync_all(); |
| 803 | |
| 804 | blk_set_aio_context(blk, main_ctx, &error_abort); |
| 805 | bdrv_try_change_aio_context(target, main_ctx, NULL, &error_abort); |
| 806 | |
| 807 | blk_unref(blk); |
| 808 | bdrv_unref(src); |
| 809 | bdrv_unref(target); |
| 810 | } |
| 811 | |
| 812 | static void test_attach_second_node(void) |
| 813 | { |
| 814 | IOThread *iothread = iothread_new(); |
| 815 | AioContext *ctx = iothread_get_aio_context(iothread); |
| 816 | AioContext *main_ctx = qemu_get_aio_context(); |
| 817 | BlockBackend *blk; |
| 818 | BlockDriverState *bs, *filter; |
| 819 | QDict *options; |
| 820 | |
| 821 | blk = blk_new(ctx, BLK_PERM_ALL, BLK_PERM_ALL); |
| 822 | bs = bdrv_new_open_driver(&bdrv_test, "base", BDRV_O_RDWR, &error_abort); |
| 823 | blk_insert_bs(blk, bs, &error_abort); |
| 824 | |
| 825 | options = qdict_new(); |
| 826 | qdict_put_str(options, "driver", "raw"); |
| 827 | qdict_put_str(options, "file", "base"); |
| 828 | |
| 829 | filter = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort); |
| 830 | |
| 831 | g_assert(blk_get_aio_context(blk) == ctx); |
| 832 | g_assert(bdrv_get_aio_context(bs) == ctx); |
| 833 | g_assert(bdrv_get_aio_context(filter) == ctx); |
| 834 | |
| 835 | blk_set_aio_context(blk, main_ctx, &error_abort); |
| 836 | g_assert(blk_get_aio_context(blk) == main_ctx); |
| 837 | g_assert(bdrv_get_aio_context(bs) == main_ctx); |
| 838 | g_assert(bdrv_get_aio_context(filter) == main_ctx); |
| 839 | |
| 840 | bdrv_unref(filter); |
| 841 | bdrv_unref(bs); |
| 842 | blk_unref(blk); |
| 843 | } |
| 844 | |
| 845 | static void test_attach_preserve_blk_ctx(void) |
| 846 | { |
| 847 | IOThread *iothread = iothread_new(); |
| 848 | AioContext *ctx = iothread_get_aio_context(iothread); |
| 849 | BlockBackend *blk; |
| 850 | BlockDriverState *bs; |
| 851 | |
| 852 | blk = blk_new(ctx, BLK_PERM_ALL, BLK_PERM_ALL); |
| 853 | bs = bdrv_new_open_driver(&bdrv_test, "base", BDRV_O_RDWR, &error_abort); |
| 854 | bs->total_sectors = 65536 / BDRV_SECTOR_SIZE; |
| 855 | |
| 856 | /* Add node to BlockBackend that has an iothread context assigned */ |
| 857 | blk_insert_bs(blk, bs, &error_abort); |
| 858 | g_assert(blk_get_aio_context(blk) == ctx); |
| 859 | g_assert(bdrv_get_aio_context(bs) == ctx); |
| 860 | |
| 861 | /* Remove the node again */ |
| 862 | blk_remove_bs(blk); |
| 863 | g_assert(blk_get_aio_context(blk) == ctx); |
| 864 | g_assert(bdrv_get_aio_context(bs) == qemu_get_aio_context()); |
| 865 | |
| 866 | /* Re-attach the node */ |
| 867 | blk_insert_bs(blk, bs, &error_abort); |
| 868 | g_assert(blk_get_aio_context(blk) == ctx); |
| 869 | g_assert(bdrv_get_aio_context(bs) == ctx); |
| 870 | |
| 871 | blk_set_aio_context(blk, qemu_get_aio_context(), &error_abort); |
| 872 | bdrv_unref(bs); |
| 873 | blk_unref(blk); |
| 874 | } |
| 875 | |
| 876 | int main(int argc, char **argv) |
| 877 | { |
| 878 | int i; |
| 879 | |
| 880 | bdrv_init(); |
| 881 | qemu_init_main_loop(&error_abort); |
| 882 | |
| 883 | g_test_init(&argc, &argv, NULL); |
| 884 | |
| 885 | for (i = 0; i < ARRAY_SIZE(sync_op_tests); i++) { |
| 886 | const SyncOpTest *t = &sync_op_tests[i]; |
| 887 | g_test_add_data_func(t->name, t, test_sync_op); |
| 888 | } |
| 889 | |
| 890 | g_test_add_func("/attach/blockjob", test_attach_blockjob); |
| 891 | g_test_add_func("/attach/second_node", test_attach_second_node); |
| 892 | g_test_add_func("/attach/preserve_blk_ctx", test_attach_preserve_blk_ctx); |
| 893 | g_test_add_func("/propagate/basic", test_propagate_basic); |
| 894 | g_test_add_func("/propagate/diamond", test_propagate_diamond); |
| 895 | g_test_add_func("/propagate/mirror", test_propagate_mirror); |
| 896 | |
| 897 | return g_test_run(); |
| 898 | } |