1 // SPDX-License-Identifier: GPL-2.0 2 3 #include "bcachefs.h" 4 #include "checksum.h" 5 #include "counters.h" 6 #include "disk_groups.h" 7 #include "ec.h" 8 #include "error.h" 9 #include "journal.h" 10 #include "journal_sb.h" 11 #include "journal_seq_blacklist.h" 12 #include "recovery.h" 13 #include "replicas.h" 14 #include "quota.h" 15 #include "sb-clean.h" 16 #include "sb-downgrade.h" 17 #include "sb-errors.h" 18 #include "sb-members.h" 19 #include "super-io.h" 20 #include "super.h" 21 #include "trace.h" 22 #include "vstructs.h" 23 24 #include <linux/backing-dev.h> 25 #include <linux/sort.h> 26 27 static const struct blk_holder_ops bch2_sb_handle_bdev_ops = { 28 }; 29 30 struct bch2_metadata_version { 31 u16 version; 32 const char *name; 33 u64 recovery_passes; 34 }; 35 36 static const struct bch2_metadata_version bch2_metadata_versions[] = { 37 #define x(n, v, _recovery_passes) { \ 38 .version = v, \ 39 .name = #n, \ 40 .recovery_passes = _recovery_passes, \ 41 }, 42 BCH_METADATA_VERSIONS() 43 #undef x 44 }; 45 46 void bch2_version_to_text(struct printbuf *out, unsigned v) 47 { 48 const char *str = "(unknown version)"; 49 50 for (unsigned i = 0; i < ARRAY_SIZE(bch2_metadata_versions); i++) 51 if (bch2_metadata_versions[i].version == v) { 52 str = bch2_metadata_versions[i].name; 53 break; 54 } 55 56 prt_printf(out, "%u.%u: %s", BCH_VERSION_MAJOR(v), BCH_VERSION_MINOR(v), str); 57 } 58 59 unsigned bch2_latest_compatible_version(unsigned v) 60 { 61 if (!BCH_VERSION_MAJOR(v)) 62 return v; 63 64 for (unsigned i = 0; i < ARRAY_SIZE(bch2_metadata_versions); i++) 65 if (bch2_metadata_versions[i].version > v && 66 BCH_VERSION_MAJOR(bch2_metadata_versions[i].version) == 67 BCH_VERSION_MAJOR(v)) 68 v = bch2_metadata_versions[i].version; 69 70 return v; 71 } 72 73 u64 bch2_upgrade_recovery_passes(struct bch_fs *c, 74 unsigned old_version, 75 unsigned new_version) 76 { 77 u64 ret = 0; 78 79 for (const struct bch2_metadata_version *i = bch2_metadata_versions; 80 i < bch2_metadata_versions + ARRAY_SIZE(bch2_metadata_versions); 81 i++) 82 if (i->version > old_version && i->version <= new_version) { 83 if (i->recovery_passes & RECOVERY_PASS_ALL_FSCK) 84 ret |= bch2_fsck_recovery_passes(); 85 ret |= i->recovery_passes; 86 } 87 88 return ret &= ~RECOVERY_PASS_ALL_FSCK; 89 } 90 91 const char * const bch2_sb_fields[] = { 92 #define x(name, nr) #name, 93 BCH_SB_FIELDS() 94 #undef x 95 NULL 96 }; 97 98 static int bch2_sb_field_validate(struct bch_sb *, struct bch_sb_field *, 99 struct printbuf *); 100 101 struct bch_sb_field *bch2_sb_field_get_id(struct bch_sb *sb, 102 enum bch_sb_field_type type) 103 { 104 struct bch_sb_field *f; 105 106 /* XXX: need locking around superblock to access optional fields */ 107 108 vstruct_for_each(sb, f) 109 if (le32_to_cpu(f->type) == type) 110 return f; 111 return NULL; 112 } 113 114 static struct bch_sb_field *__bch2_sb_field_resize(struct bch_sb_handle *sb, 115 struct bch_sb_field *f, 116 unsigned u64s) 117 { 118 unsigned old_u64s = f ? le32_to_cpu(f->u64s) : 0; 119 unsigned sb_u64s = le32_to_cpu(sb->sb->u64s) + u64s - old_u64s; 120 121 BUG_ON(__vstruct_bytes(struct bch_sb, sb_u64s) > sb->buffer_size); 122 123 if (!f && !u64s) { 124 /* nothing to do: */ 125 } else if (!f) { 126 f = vstruct_last(sb->sb); 127 memset(f, 0, sizeof(u64) * u64s); 128 f->u64s = cpu_to_le32(u64s); 129 f->type = 0; 130 } else { 131 void *src, *dst; 132 133 src = vstruct_end(f); 134 135 if (u64s) { 136 f->u64s = cpu_to_le32(u64s); 137 dst = vstruct_end(f); 138 } else { 139 dst = f; 140 } 141 142 memmove(dst, src, vstruct_end(sb->sb) - src); 143 144 if (dst > src) 145 memset(src, 0, dst - src); 146 } 147 148 sb->sb->u64s = cpu_to_le32(sb_u64s); 149 150 return u64s ? f : NULL; 151 } 152 153 void bch2_sb_field_delete(struct bch_sb_handle *sb, 154 enum bch_sb_field_type type) 155 { 156 struct bch_sb_field *f = bch2_sb_field_get_id(sb->sb, type); 157 158 if (f) 159 __bch2_sb_field_resize(sb, f, 0); 160 } 161 162 /* Superblock realloc/free: */ 163 164 void bch2_free_super(struct bch_sb_handle *sb) 165 { 166 kfree(sb->bio); 167 if (!IS_ERR_OR_NULL(sb->bdev)) 168 blkdev_put(sb->bdev, sb->holder); 169 kfree(sb->holder); 170 kfree(sb->sb_name); 171 172 kfree(sb->sb); 173 memset(sb, 0, sizeof(*sb)); 174 } 175 176 int bch2_sb_realloc(struct bch_sb_handle *sb, unsigned u64s) 177 { 178 size_t new_bytes = __vstruct_bytes(struct bch_sb, u64s); 179 size_t new_buffer_size; 180 struct bch_sb *new_sb; 181 struct bio *bio; 182 183 if (sb->bdev) 184 new_bytes = max_t(size_t, new_bytes, bdev_logical_block_size(sb->bdev)); 185 186 new_buffer_size = roundup_pow_of_two(new_bytes); 187 188 if (sb->sb && sb->buffer_size >= new_buffer_size) 189 return 0; 190 191 if (sb->sb && sb->have_layout) { 192 u64 max_bytes = 512 << sb->sb->layout.sb_max_size_bits; 193 194 if (new_bytes > max_bytes) { 195 pr_err("%pg: superblock too big: want %zu but have %llu", 196 sb->bdev, new_bytes, max_bytes); 197 return -BCH_ERR_ENOSPC_sb; 198 } 199 } 200 201 if (sb->buffer_size >= new_buffer_size && sb->sb) 202 return 0; 203 204 if (dynamic_fault("bcachefs:add:super_realloc")) 205 return -BCH_ERR_ENOMEM_sb_realloc_injected; 206 207 new_sb = krealloc(sb->sb, new_buffer_size, GFP_NOFS|__GFP_ZERO); 208 if (!new_sb) 209 return -BCH_ERR_ENOMEM_sb_buf_realloc; 210 211 sb->sb = new_sb; 212 213 if (sb->have_bio) { 214 unsigned nr_bvecs = buf_pages(sb->sb, new_buffer_size); 215 216 bio = bio_kmalloc(nr_bvecs, GFP_KERNEL); 217 if (!bio) 218 return -BCH_ERR_ENOMEM_sb_bio_realloc; 219 220 bio_init(bio, NULL, bio->bi_inline_vecs, nr_bvecs, 0); 221 222 kfree(sb->bio); 223 sb->bio = bio; 224 } 225 226 sb->buffer_size = new_buffer_size; 227 228 return 0; 229 } 230 231 struct bch_sb_field *bch2_sb_field_resize_id(struct bch_sb_handle *sb, 232 enum bch_sb_field_type type, 233 unsigned u64s) 234 { 235 struct bch_sb_field *f = bch2_sb_field_get_id(sb->sb, type); 236 ssize_t old_u64s = f ? le32_to_cpu(f->u64s) : 0; 237 ssize_t d = -old_u64s + u64s; 238 239 if (bch2_sb_realloc(sb, le32_to_cpu(sb->sb->u64s) + d)) 240 return NULL; 241 242 if (sb->fs_sb) { 243 struct bch_fs *c = container_of(sb, struct bch_fs, disk_sb); 244 struct bch_dev *ca; 245 unsigned i; 246 247 lockdep_assert_held(&c->sb_lock); 248 249 /* XXX: we're not checking that offline device have enough space */ 250 251 for_each_online_member(ca, c, i) { 252 struct bch_sb_handle *dev_sb = &ca->disk_sb; 253 254 if (bch2_sb_realloc(dev_sb, le32_to_cpu(dev_sb->sb->u64s) + d)) { 255 percpu_ref_put(&ca->ref); 256 return NULL; 257 } 258 } 259 } 260 261 f = bch2_sb_field_get_id(sb->sb, type); 262 f = __bch2_sb_field_resize(sb, f, u64s); 263 if (f) 264 f->type = cpu_to_le32(type); 265 return f; 266 } 267 268 struct bch_sb_field *bch2_sb_field_get_minsize_id(struct bch_sb_handle *sb, 269 enum bch_sb_field_type type, 270 unsigned u64s) 271 { 272 struct bch_sb_field *f = bch2_sb_field_get_id(sb->sb, type); 273 274 if (!f || le32_to_cpu(f->u64s) < u64s) 275 f = bch2_sb_field_resize_id(sb, type, u64s); 276 return f; 277 } 278 279 /* Superblock validate: */ 280 281 static int validate_sb_layout(struct bch_sb_layout *layout, struct printbuf *out) 282 { 283 u64 offset, prev_offset, max_sectors; 284 unsigned i; 285 286 BUILD_BUG_ON(sizeof(struct bch_sb_layout) != 512); 287 288 if (!uuid_equal(&layout->magic, &BCACHE_MAGIC) && 289 !uuid_equal(&layout->magic, &BCHFS_MAGIC)) { 290 prt_printf(out, "Not a bcachefs superblock layout"); 291 return -BCH_ERR_invalid_sb_layout; 292 } 293 294 if (layout->layout_type != 0) { 295 prt_printf(out, "Invalid superblock layout type %u", 296 layout->layout_type); 297 return -BCH_ERR_invalid_sb_layout_type; 298 } 299 300 if (!layout->nr_superblocks) { 301 prt_printf(out, "Invalid superblock layout: no superblocks"); 302 return -BCH_ERR_invalid_sb_layout_nr_superblocks; 303 } 304 305 if (layout->nr_superblocks > ARRAY_SIZE(layout->sb_offset)) { 306 prt_printf(out, "Invalid superblock layout: too many superblocks"); 307 return -BCH_ERR_invalid_sb_layout_nr_superblocks; 308 } 309 310 max_sectors = 1 << layout->sb_max_size_bits; 311 312 prev_offset = le64_to_cpu(layout->sb_offset[0]); 313 314 for (i = 1; i < layout->nr_superblocks; i++) { 315 offset = le64_to_cpu(layout->sb_offset[i]); 316 317 if (offset < prev_offset + max_sectors) { 318 prt_printf(out, "Invalid superblock layout: superblocks overlap\n" 319 " (sb %u ends at %llu next starts at %llu", 320 i - 1, prev_offset + max_sectors, offset); 321 return -BCH_ERR_invalid_sb_layout_superblocks_overlap; 322 } 323 prev_offset = offset; 324 } 325 326 return 0; 327 } 328 329 static int bch2_sb_compatible(struct bch_sb *sb, struct printbuf *out) 330 { 331 u16 version = le16_to_cpu(sb->version); 332 u16 version_min = le16_to_cpu(sb->version_min); 333 334 if (!bch2_version_compatible(version)) { 335 prt_str(out, "Unsupported superblock version "); 336 bch2_version_to_text(out, version); 337 prt_str(out, " (min "); 338 bch2_version_to_text(out, bcachefs_metadata_version_min); 339 prt_str(out, ", max "); 340 bch2_version_to_text(out, bcachefs_metadata_version_current); 341 prt_str(out, ")"); 342 return -BCH_ERR_invalid_sb_version; 343 } 344 345 if (!bch2_version_compatible(version_min)) { 346 prt_str(out, "Unsupported superblock version_min "); 347 bch2_version_to_text(out, version_min); 348 prt_str(out, " (min "); 349 bch2_version_to_text(out, bcachefs_metadata_version_min); 350 prt_str(out, ", max "); 351 bch2_version_to_text(out, bcachefs_metadata_version_current); 352 prt_str(out, ")"); 353 return -BCH_ERR_invalid_sb_version; 354 } 355 356 if (version_min > version) { 357 prt_str(out, "Bad minimum version "); 358 bch2_version_to_text(out, version_min); 359 prt_str(out, ", greater than version field "); 360 bch2_version_to_text(out, version); 361 return -BCH_ERR_invalid_sb_version; 362 } 363 364 return 0; 365 } 366 367 static int bch2_sb_validate(struct bch_sb_handle *disk_sb, struct printbuf *out, 368 int rw) 369 { 370 struct bch_sb *sb = disk_sb->sb; 371 struct bch_sb_field *f; 372 struct bch_sb_field_members_v1 *mi; 373 enum bch_opt_id opt_id; 374 u16 block_size; 375 int ret; 376 377 ret = bch2_sb_compatible(sb, out); 378 if (ret) 379 return ret; 380 381 if (sb->features[1] || 382 (le64_to_cpu(sb->features[0]) & (~0ULL << BCH_FEATURE_NR))) { 383 prt_printf(out, "Filesystem has incompatible features"); 384 return -BCH_ERR_invalid_sb_features; 385 } 386 387 block_size = le16_to_cpu(sb->block_size); 388 389 if (block_size > PAGE_SECTORS) { 390 prt_printf(out, "Block size too big (got %u, max %u)", 391 block_size, PAGE_SECTORS); 392 return -BCH_ERR_invalid_sb_block_size; 393 } 394 395 if (bch2_is_zero(sb->user_uuid.b, sizeof(sb->user_uuid))) { 396 prt_printf(out, "Bad user UUID (got zeroes)"); 397 return -BCH_ERR_invalid_sb_uuid; 398 } 399 400 if (bch2_is_zero(sb->uuid.b, sizeof(sb->uuid))) { 401 prt_printf(out, "Bad internal UUID (got zeroes)"); 402 return -BCH_ERR_invalid_sb_uuid; 403 } 404 405 if (!sb->nr_devices || 406 sb->nr_devices > BCH_SB_MEMBERS_MAX) { 407 prt_printf(out, "Bad number of member devices %u (max %u)", 408 sb->nr_devices, BCH_SB_MEMBERS_MAX); 409 return -BCH_ERR_invalid_sb_too_many_members; 410 } 411 412 if (sb->dev_idx >= sb->nr_devices) { 413 prt_printf(out, "Bad dev_idx (got %u, nr_devices %u)", 414 sb->dev_idx, sb->nr_devices); 415 return -BCH_ERR_invalid_sb_dev_idx; 416 } 417 418 if (!sb->time_precision || 419 le32_to_cpu(sb->time_precision) > NSEC_PER_SEC) { 420 prt_printf(out, "Invalid time precision: %u (min 1, max %lu)", 421 le32_to_cpu(sb->time_precision), NSEC_PER_SEC); 422 return -BCH_ERR_invalid_sb_time_precision; 423 } 424 425 if (rw == READ) { 426 /* 427 * Been seeing a bug where these are getting inexplicably 428 * zeroed, so we're now validating them, but we have to be 429 * careful not to preven people's filesystems from mounting: 430 */ 431 if (!BCH_SB_JOURNAL_FLUSH_DELAY(sb)) 432 SET_BCH_SB_JOURNAL_FLUSH_DELAY(sb, 1000); 433 if (!BCH_SB_JOURNAL_RECLAIM_DELAY(sb)) 434 SET_BCH_SB_JOURNAL_RECLAIM_DELAY(sb, 1000); 435 436 if (!BCH_SB_VERSION_UPGRADE_COMPLETE(sb)) 437 SET_BCH_SB_VERSION_UPGRADE_COMPLETE(sb, le16_to_cpu(sb->version)); 438 } 439 440 for (opt_id = 0; opt_id < bch2_opts_nr; opt_id++) { 441 const struct bch_option *opt = bch2_opt_table + opt_id; 442 443 if (opt->get_sb != BCH2_NO_SB_OPT) { 444 u64 v = bch2_opt_from_sb(sb, opt_id); 445 446 prt_printf(out, "Invalid option "); 447 ret = bch2_opt_validate(opt, v, out); 448 if (ret) 449 return ret; 450 451 printbuf_reset(out); 452 } 453 } 454 455 /* validate layout */ 456 ret = validate_sb_layout(&sb->layout, out); 457 if (ret) 458 return ret; 459 460 vstruct_for_each(sb, f) { 461 if (!f->u64s) { 462 prt_printf(out, "Invalid superblock: optional field with size 0 (type %u)", 463 le32_to_cpu(f->type)); 464 return -BCH_ERR_invalid_sb_field_size; 465 } 466 467 if (vstruct_next(f) > vstruct_last(sb)) { 468 prt_printf(out, "Invalid superblock: optional field extends past end of superblock (type %u)", 469 le32_to_cpu(f->type)); 470 return -BCH_ERR_invalid_sb_field_size; 471 } 472 } 473 474 /* members must be validated first: */ 475 mi = bch2_sb_field_get(sb, members_v1); 476 if (!mi) { 477 prt_printf(out, "Invalid superblock: member info area missing"); 478 return -BCH_ERR_invalid_sb_members_missing; 479 } 480 481 ret = bch2_sb_field_validate(sb, &mi->field, out); 482 if (ret) 483 return ret; 484 485 vstruct_for_each(sb, f) { 486 if (le32_to_cpu(f->type) == BCH_SB_FIELD_members_v1) 487 continue; 488 489 ret = bch2_sb_field_validate(sb, f, out); 490 if (ret) 491 return ret; 492 } 493 494 return 0; 495 } 496 497 /* device open: */ 498 499 static unsigned long le_ulong_to_cpu(unsigned long v) 500 { 501 return sizeof(unsigned long) == 8 502 ? le64_to_cpu(v) 503 : le32_to_cpu(v); 504 } 505 506 static void le_bitvector_to_cpu(unsigned long *dst, unsigned long *src, unsigned nr) 507 { 508 BUG_ON(nr & (BITS_PER_TYPE(long) - 1)); 509 510 for (unsigned i = 0; i < BITS_TO_LONGS(nr); i++) 511 dst[i] = le_ulong_to_cpu(src[i]); 512 } 513 514 static void bch2_sb_update(struct bch_fs *c) 515 { 516 struct bch_sb *src = c->disk_sb.sb; 517 struct bch_dev *ca; 518 unsigned i; 519 520 lockdep_assert_held(&c->sb_lock); 521 522 c->sb.uuid = src->uuid; 523 c->sb.user_uuid = src->user_uuid; 524 c->sb.version = le16_to_cpu(src->version); 525 c->sb.version_min = le16_to_cpu(src->version_min); 526 c->sb.version_upgrade_complete = BCH_SB_VERSION_UPGRADE_COMPLETE(src); 527 c->sb.nr_devices = src->nr_devices; 528 c->sb.clean = BCH_SB_CLEAN(src); 529 c->sb.encryption_type = BCH_SB_ENCRYPTION_TYPE(src); 530 531 c->sb.nsec_per_time_unit = le32_to_cpu(src->time_precision); 532 c->sb.time_units_per_sec = NSEC_PER_SEC / c->sb.nsec_per_time_unit; 533 534 /* XXX this is wrong, we need a 96 or 128 bit integer type */ 535 c->sb.time_base_lo = div_u64(le64_to_cpu(src->time_base_lo), 536 c->sb.nsec_per_time_unit); 537 c->sb.time_base_hi = le32_to_cpu(src->time_base_hi); 538 539 c->sb.features = le64_to_cpu(src->features[0]); 540 c->sb.compat = le64_to_cpu(src->compat[0]); 541 542 memset(c->sb.errors_silent, 0, sizeof(c->sb.errors_silent)); 543 544 struct bch_sb_field_ext *ext = bch2_sb_field_get(src, ext); 545 if (ext) 546 le_bitvector_to_cpu(c->sb.errors_silent, (void *) ext->errors_silent, 547 sizeof(c->sb.errors_silent) * 8); 548 549 for_each_member_device(ca, c, i) { 550 struct bch_member m = bch2_sb_member_get(src, ca->dev_idx); 551 ca->mi = bch2_mi_to_cpu(&m); 552 } 553 } 554 555 static int __copy_super(struct bch_sb_handle *dst_handle, struct bch_sb *src) 556 { 557 struct bch_sb_field *src_f, *dst_f; 558 struct bch_sb *dst = dst_handle->sb; 559 unsigned i; 560 561 dst->version = src->version; 562 dst->version_min = src->version_min; 563 dst->seq = src->seq; 564 dst->uuid = src->uuid; 565 dst->user_uuid = src->user_uuid; 566 memcpy(dst->label, src->label, sizeof(dst->label)); 567 568 dst->block_size = src->block_size; 569 dst->nr_devices = src->nr_devices; 570 571 dst->time_base_lo = src->time_base_lo; 572 dst->time_base_hi = src->time_base_hi; 573 dst->time_precision = src->time_precision; 574 575 memcpy(dst->flags, src->flags, sizeof(dst->flags)); 576 memcpy(dst->features, src->features, sizeof(dst->features)); 577 memcpy(dst->compat, src->compat, sizeof(dst->compat)); 578 579 for (i = 0; i < BCH_SB_FIELD_NR; i++) { 580 int d; 581 582 if ((1U << i) & BCH_SINGLE_DEVICE_SB_FIELDS) 583 continue; 584 585 src_f = bch2_sb_field_get_id(src, i); 586 dst_f = bch2_sb_field_get_id(dst, i); 587 588 d = (src_f ? le32_to_cpu(src_f->u64s) : 0) - 589 (dst_f ? le32_to_cpu(dst_f->u64s) : 0); 590 if (d > 0) { 591 int ret = bch2_sb_realloc(dst_handle, 592 le32_to_cpu(dst_handle->sb->u64s) + d); 593 594 if (ret) 595 return ret; 596 597 dst = dst_handle->sb; 598 dst_f = bch2_sb_field_get_id(dst, i); 599 } 600 601 dst_f = __bch2_sb_field_resize(dst_handle, dst_f, 602 src_f ? le32_to_cpu(src_f->u64s) : 0); 603 604 if (src_f) 605 memcpy(dst_f, src_f, vstruct_bytes(src_f)); 606 } 607 608 return 0; 609 } 610 611 int bch2_sb_to_fs(struct bch_fs *c, struct bch_sb *src) 612 { 613 int ret; 614 615 lockdep_assert_held(&c->sb_lock); 616 617 ret = bch2_sb_realloc(&c->disk_sb, 0) ?: 618 __copy_super(&c->disk_sb, src) ?: 619 bch2_sb_replicas_to_cpu_replicas(c) ?: 620 bch2_sb_disk_groups_to_cpu(c); 621 if (ret) 622 return ret; 623 624 bch2_sb_update(c); 625 return 0; 626 } 627 628 int bch2_sb_from_fs(struct bch_fs *c, struct bch_dev *ca) 629 { 630 return __copy_super(&ca->disk_sb, c->disk_sb.sb); 631 } 632 633 /* read superblock: */ 634 635 static int read_one_super(struct bch_sb_handle *sb, u64 offset, struct printbuf *err) 636 { 637 struct bch_csum csum; 638 size_t bytes; 639 int ret; 640 reread: 641 bio_reset(sb->bio, sb->bdev, REQ_OP_READ|REQ_SYNC|REQ_META); 642 sb->bio->bi_iter.bi_sector = offset; 643 bch2_bio_map(sb->bio, sb->sb, sb->buffer_size); 644 645 ret = submit_bio_wait(sb->bio); 646 if (ret) { 647 prt_printf(err, "IO error: %i", ret); 648 return ret; 649 } 650 651 if (!uuid_equal(&sb->sb->magic, &BCACHE_MAGIC) && 652 !uuid_equal(&sb->sb->magic, &BCHFS_MAGIC)) { 653 prt_printf(err, "Not a bcachefs superblock"); 654 return -BCH_ERR_invalid_sb_magic; 655 } 656 657 ret = bch2_sb_compatible(sb->sb, err); 658 if (ret) 659 return ret; 660 661 bytes = vstruct_bytes(sb->sb); 662 663 if (bytes > 512 << sb->sb->layout.sb_max_size_bits) { 664 prt_printf(err, "Invalid superblock: too big (got %zu bytes, layout max %lu)", 665 bytes, 512UL << sb->sb->layout.sb_max_size_bits); 666 return -BCH_ERR_invalid_sb_too_big; 667 } 668 669 if (bytes > sb->buffer_size) { 670 ret = bch2_sb_realloc(sb, le32_to_cpu(sb->sb->u64s)); 671 if (ret) 672 return ret; 673 goto reread; 674 } 675 676 if (BCH_SB_CSUM_TYPE(sb->sb) >= BCH_CSUM_NR) { 677 prt_printf(err, "unknown checksum type %llu", BCH_SB_CSUM_TYPE(sb->sb)); 678 return -BCH_ERR_invalid_sb_csum_type; 679 } 680 681 /* XXX: verify MACs */ 682 csum = csum_vstruct(NULL, BCH_SB_CSUM_TYPE(sb->sb), 683 null_nonce(), sb->sb); 684 685 if (bch2_crc_cmp(csum, sb->sb->csum)) { 686 prt_printf(err, "bad checksum"); 687 return -BCH_ERR_invalid_sb_csum; 688 } 689 690 sb->seq = le64_to_cpu(sb->sb->seq); 691 692 return 0; 693 } 694 695 int bch2_read_super(const char *path, struct bch_opts *opts, 696 struct bch_sb_handle *sb) 697 { 698 u64 offset = opt_get(*opts, sb); 699 struct bch_sb_layout layout; 700 struct printbuf err = PRINTBUF; 701 __le64 *i; 702 int ret; 703 #ifndef __KERNEL__ 704 retry: 705 #endif 706 memset(sb, 0, sizeof(*sb)); 707 sb->mode = BLK_OPEN_READ; 708 sb->have_bio = true; 709 sb->holder = kmalloc(1, GFP_KERNEL); 710 if (!sb->holder) 711 return -ENOMEM; 712 713 sb->sb_name = kstrdup(path, GFP_KERNEL); 714 if (!sb->sb_name) 715 return -ENOMEM; 716 717 #ifndef __KERNEL__ 718 if (opt_get(*opts, direct_io) == false) 719 sb->mode |= BLK_OPEN_BUFFERED; 720 #endif 721 722 if (!opt_get(*opts, noexcl)) 723 sb->mode |= BLK_OPEN_EXCL; 724 725 if (!opt_get(*opts, nochanges)) 726 sb->mode |= BLK_OPEN_WRITE; 727 728 sb->bdev = blkdev_get_by_path(path, sb->mode, sb->holder, &bch2_sb_handle_bdev_ops); 729 if (IS_ERR(sb->bdev) && 730 PTR_ERR(sb->bdev) == -EACCES && 731 opt_get(*opts, read_only)) { 732 sb->mode &= ~BLK_OPEN_WRITE; 733 734 sb->bdev = blkdev_get_by_path(path, sb->mode, sb->holder, &bch2_sb_handle_bdev_ops); 735 if (!IS_ERR(sb->bdev)) 736 opt_set(*opts, nochanges, true); 737 } 738 739 if (IS_ERR(sb->bdev)) { 740 ret = PTR_ERR(sb->bdev); 741 goto out; 742 } 743 744 ret = bch2_sb_realloc(sb, 0); 745 if (ret) { 746 prt_printf(&err, "error allocating memory for superblock"); 747 goto err; 748 } 749 750 if (bch2_fs_init_fault("read_super")) { 751 prt_printf(&err, "dynamic fault"); 752 ret = -EFAULT; 753 goto err; 754 } 755 756 ret = read_one_super(sb, offset, &err); 757 if (!ret) 758 goto got_super; 759 760 if (opt_defined(*opts, sb)) 761 goto err; 762 763 printk(KERN_ERR "bcachefs (%s): error reading default superblock: %s\n", 764 path, err.buf); 765 printbuf_reset(&err); 766 767 /* 768 * Error reading primary superblock - read location of backup 769 * superblocks: 770 */ 771 bio_reset(sb->bio, sb->bdev, REQ_OP_READ|REQ_SYNC|REQ_META); 772 sb->bio->bi_iter.bi_sector = BCH_SB_LAYOUT_SECTOR; 773 /* 774 * use sb buffer to read layout, since sb buffer is page aligned but 775 * layout won't be: 776 */ 777 bch2_bio_map(sb->bio, sb->sb, sizeof(struct bch_sb_layout)); 778 779 ret = submit_bio_wait(sb->bio); 780 if (ret) { 781 prt_printf(&err, "IO error: %i", ret); 782 goto err; 783 } 784 785 memcpy(&layout, sb->sb, sizeof(layout)); 786 ret = validate_sb_layout(&layout, &err); 787 if (ret) 788 goto err; 789 790 for (i = layout.sb_offset; 791 i < layout.sb_offset + layout.nr_superblocks; i++) { 792 offset = le64_to_cpu(*i); 793 794 if (offset == opt_get(*opts, sb)) 795 continue; 796 797 ret = read_one_super(sb, offset, &err); 798 if (!ret) 799 goto got_super; 800 } 801 802 goto err; 803 804 got_super: 805 if (le16_to_cpu(sb->sb->block_size) << 9 < 806 bdev_logical_block_size(sb->bdev) && 807 opt_get(*opts, direct_io)) { 808 #ifndef __KERNEL__ 809 opt_set(*opts, direct_io, false); 810 bch2_free_super(sb); 811 goto retry; 812 #endif 813 prt_printf(&err, "block size (%u) smaller than device block size (%u)", 814 le16_to_cpu(sb->sb->block_size) << 9, 815 bdev_logical_block_size(sb->bdev)); 816 ret = -BCH_ERR_block_size_too_small; 817 goto err; 818 } 819 820 ret = 0; 821 sb->have_layout = true; 822 823 ret = bch2_sb_validate(sb, &err, READ); 824 if (ret) { 825 printk(KERN_ERR "bcachefs (%s): error validating superblock: %s\n", 826 path, err.buf); 827 goto err_no_print; 828 } 829 out: 830 printbuf_exit(&err); 831 return ret; 832 err: 833 printk(KERN_ERR "bcachefs (%s): error reading superblock: %s\n", 834 path, err.buf); 835 err_no_print: 836 bch2_free_super(sb); 837 goto out; 838 } 839 840 /* write superblock: */ 841 842 static void write_super_endio(struct bio *bio) 843 { 844 struct bch_dev *ca = bio->bi_private; 845 846 /* XXX: return errors directly */ 847 848 if (bch2_dev_io_err_on(bio->bi_status, ca, 849 bio_data_dir(bio) 850 ? BCH_MEMBER_ERROR_write 851 : BCH_MEMBER_ERROR_read, 852 "superblock %s error: %s", 853 bio_data_dir(bio) ? "write" : "read", 854 bch2_blk_status_to_str(bio->bi_status))) 855 ca->sb_write_error = 1; 856 857 closure_put(&ca->fs->sb_write); 858 percpu_ref_put(&ca->io_ref); 859 } 860 861 static void read_back_super(struct bch_fs *c, struct bch_dev *ca) 862 { 863 struct bch_sb *sb = ca->disk_sb.sb; 864 struct bio *bio = ca->disk_sb.bio; 865 866 bio_reset(bio, ca->disk_sb.bdev, REQ_OP_READ|REQ_SYNC|REQ_META); 867 bio->bi_iter.bi_sector = le64_to_cpu(sb->layout.sb_offset[0]); 868 bio->bi_end_io = write_super_endio; 869 bio->bi_private = ca; 870 bch2_bio_map(bio, ca->sb_read_scratch, PAGE_SIZE); 871 872 this_cpu_add(ca->io_done->sectors[READ][BCH_DATA_sb], 873 bio_sectors(bio)); 874 875 percpu_ref_get(&ca->io_ref); 876 closure_bio_submit(bio, &c->sb_write); 877 } 878 879 static void write_one_super(struct bch_fs *c, struct bch_dev *ca, unsigned idx) 880 { 881 struct bch_sb *sb = ca->disk_sb.sb; 882 struct bio *bio = ca->disk_sb.bio; 883 884 sb->offset = sb->layout.sb_offset[idx]; 885 886 SET_BCH_SB_CSUM_TYPE(sb, bch2_csum_opt_to_type(c->opts.metadata_checksum, false)); 887 sb->csum = csum_vstruct(c, BCH_SB_CSUM_TYPE(sb), 888 null_nonce(), sb); 889 890 bio_reset(bio, ca->disk_sb.bdev, REQ_OP_WRITE|REQ_SYNC|REQ_META); 891 bio->bi_iter.bi_sector = le64_to_cpu(sb->offset); 892 bio->bi_end_io = write_super_endio; 893 bio->bi_private = ca; 894 bch2_bio_map(bio, sb, 895 roundup((size_t) vstruct_bytes(sb), 896 bdev_logical_block_size(ca->disk_sb.bdev))); 897 898 this_cpu_add(ca->io_done->sectors[WRITE][BCH_DATA_sb], 899 bio_sectors(bio)); 900 901 percpu_ref_get(&ca->io_ref); 902 closure_bio_submit(bio, &c->sb_write); 903 } 904 905 int bch2_write_super(struct bch_fs *c) 906 { 907 struct closure *cl = &c->sb_write; 908 struct bch_dev *ca; 909 struct printbuf err = PRINTBUF; 910 unsigned i, sb = 0, nr_wrote; 911 struct bch_devs_mask sb_written; 912 bool wrote, can_mount_without_written, can_mount_with_written; 913 unsigned degraded_flags = BCH_FORCE_IF_DEGRADED; 914 int ret = 0; 915 916 trace_and_count(c, write_super, c, _RET_IP_); 917 918 if (c->opts.very_degraded) 919 degraded_flags |= BCH_FORCE_IF_LOST; 920 921 lockdep_assert_held(&c->sb_lock); 922 923 closure_init_stack(cl); 924 memset(&sb_written, 0, sizeof(sb_written)); 925 926 /* Make sure we're using the new magic numbers: */ 927 c->disk_sb.sb->magic = BCHFS_MAGIC; 928 c->disk_sb.sb->layout.magic = BCHFS_MAGIC; 929 930 le64_add_cpu(&c->disk_sb.sb->seq, 1); 931 932 if (test_bit(BCH_FS_ERROR, &c->flags)) 933 SET_BCH_SB_HAS_ERRORS(c->disk_sb.sb, 1); 934 if (test_bit(BCH_FS_TOPOLOGY_ERROR, &c->flags)) 935 SET_BCH_SB_HAS_TOPOLOGY_ERRORS(c->disk_sb.sb, 1); 936 937 SET_BCH_SB_BIG_ENDIAN(c->disk_sb.sb, CPU_BIG_ENDIAN); 938 939 bch2_sb_counters_from_cpu(c); 940 bch2_sb_members_from_cpu(c); 941 bch2_sb_members_cpy_v2_v1(&c->disk_sb); 942 bch2_sb_errors_from_cpu(c); 943 bch2_sb_downgrade_update(c); 944 945 for_each_online_member(ca, c, i) 946 bch2_sb_from_fs(c, ca); 947 948 for_each_online_member(ca, c, i) { 949 printbuf_reset(&err); 950 951 ret = bch2_sb_validate(&ca->disk_sb, &err, WRITE); 952 if (ret) { 953 bch2_fs_inconsistent(c, "sb invalid before write: %s", err.buf); 954 percpu_ref_put(&ca->io_ref); 955 goto out; 956 } 957 } 958 959 if (c->opts.nochanges) 960 goto out; 961 962 /* 963 * Defer writing the superblock until filesystem initialization is 964 * complete - don't write out a partly initialized superblock: 965 */ 966 if (!BCH_SB_INITIALIZED(c->disk_sb.sb)) 967 goto out; 968 969 for_each_online_member(ca, c, i) { 970 __set_bit(ca->dev_idx, sb_written.d); 971 ca->sb_write_error = 0; 972 } 973 974 for_each_online_member(ca, c, i) 975 read_back_super(c, ca); 976 closure_sync(cl); 977 978 for_each_online_member(ca, c, i) { 979 if (ca->sb_write_error) 980 continue; 981 982 if (le64_to_cpu(ca->sb_read_scratch->seq) < ca->disk_sb.seq) { 983 bch2_fs_fatal_error(c, 984 "Superblock write was silently dropped! (seq %llu expected %llu)", 985 le64_to_cpu(ca->sb_read_scratch->seq), 986 ca->disk_sb.seq); 987 percpu_ref_put(&ca->io_ref); 988 ret = -BCH_ERR_erofs_sb_err; 989 goto out; 990 } 991 992 if (le64_to_cpu(ca->sb_read_scratch->seq) > ca->disk_sb.seq) { 993 bch2_fs_fatal_error(c, 994 "Superblock modified by another process (seq %llu expected %llu)", 995 le64_to_cpu(ca->sb_read_scratch->seq), 996 ca->disk_sb.seq); 997 percpu_ref_put(&ca->io_ref); 998 ret = -BCH_ERR_erofs_sb_err; 999 goto out; 1000 } 1001 } 1002 1003 do { 1004 wrote = false; 1005 for_each_online_member(ca, c, i) 1006 if (!ca->sb_write_error && 1007 sb < ca->disk_sb.sb->layout.nr_superblocks) { 1008 write_one_super(c, ca, sb); 1009 wrote = true; 1010 } 1011 closure_sync(cl); 1012 sb++; 1013 } while (wrote); 1014 1015 for_each_online_member(ca, c, i) { 1016 if (ca->sb_write_error) 1017 __clear_bit(ca->dev_idx, sb_written.d); 1018 else 1019 ca->disk_sb.seq = le64_to_cpu(ca->disk_sb.sb->seq); 1020 } 1021 1022 nr_wrote = dev_mask_nr(&sb_written); 1023 1024 can_mount_with_written = 1025 bch2_have_enough_devs(c, sb_written, degraded_flags, false); 1026 1027 for (i = 0; i < ARRAY_SIZE(sb_written.d); i++) 1028 sb_written.d[i] = ~sb_written.d[i]; 1029 1030 can_mount_without_written = 1031 bch2_have_enough_devs(c, sb_written, degraded_flags, false); 1032 1033 /* 1034 * If we would be able to mount _without_ the devices we successfully 1035 * wrote superblocks to, we weren't able to write to enough devices: 1036 * 1037 * Exception: if we can mount without the successes because we haven't 1038 * written anything (new filesystem), we continue if we'd be able to 1039 * mount with the devices we did successfully write to: 1040 */ 1041 if (bch2_fs_fatal_err_on(!nr_wrote || 1042 !can_mount_with_written || 1043 (can_mount_without_written && 1044 !can_mount_with_written), c, 1045 "Unable to write superblock to sufficient devices (from %ps)", 1046 (void *) _RET_IP_)) 1047 ret = -1; 1048 out: 1049 /* Make new options visible after they're persistent: */ 1050 bch2_sb_update(c); 1051 printbuf_exit(&err); 1052 return ret; 1053 } 1054 1055 void __bch2_check_set_feature(struct bch_fs *c, unsigned feat) 1056 { 1057 mutex_lock(&c->sb_lock); 1058 if (!(c->sb.features & (1ULL << feat))) { 1059 c->disk_sb.sb->features[0] |= cpu_to_le64(1ULL << feat); 1060 1061 bch2_write_super(c); 1062 } 1063 mutex_unlock(&c->sb_lock); 1064 } 1065 1066 /* Downgrade if superblock is at a higher version than currently supported: */ 1067 bool bch2_check_version_downgrade(struct bch_fs *c) 1068 { 1069 bool ret = bcachefs_metadata_version_current < c->sb.version; 1070 1071 lockdep_assert_held(&c->sb_lock); 1072 1073 /* 1074 * Downgrade, if superblock is at a higher version than currently 1075 * supported: 1076 */ 1077 if (BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb) > bcachefs_metadata_version_current) 1078 SET_BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb, bcachefs_metadata_version_current); 1079 if (c->sb.version > bcachefs_metadata_version_current) 1080 c->disk_sb.sb->version = cpu_to_le16(bcachefs_metadata_version_current); 1081 if (c->sb.version_min > bcachefs_metadata_version_current) 1082 c->disk_sb.sb->version_min = cpu_to_le16(bcachefs_metadata_version_current); 1083 c->disk_sb.sb->compat[0] &= cpu_to_le64((1ULL << BCH_COMPAT_NR) - 1); 1084 return ret; 1085 } 1086 1087 void bch2_sb_upgrade(struct bch_fs *c, unsigned new_version) 1088 { 1089 lockdep_assert_held(&c->sb_lock); 1090 1091 if (BCH_VERSION_MAJOR(new_version) > 1092 BCH_VERSION_MAJOR(le16_to_cpu(c->disk_sb.sb->version))) 1093 bch2_sb_field_resize(&c->disk_sb, downgrade, 0); 1094 1095 c->disk_sb.sb->version = cpu_to_le16(new_version); 1096 c->disk_sb.sb->features[0] |= cpu_to_le64(BCH_SB_FEATURES_ALL); 1097 } 1098 1099 static int bch2_sb_ext_validate(struct bch_sb *sb, struct bch_sb_field *f, 1100 struct printbuf *err) 1101 { 1102 if (vstruct_bytes(f) < 88) { 1103 prt_printf(err, "field too small (%zu < %u)", vstruct_bytes(f), 88); 1104 return -BCH_ERR_invalid_sb_ext; 1105 } 1106 1107 return 0; 1108 } 1109 1110 static void bch2_sb_ext_to_text(struct printbuf *out, struct bch_sb *sb, 1111 struct bch_sb_field *f) 1112 { 1113 struct bch_sb_field_ext *e = field_to_type(f, ext); 1114 1115 prt_printf(out, "Recovery passes required:"); 1116 prt_tab(out); 1117 prt_bitflags(out, bch2_recovery_passes, 1118 bch2_recovery_passes_from_stable(le64_to_cpu(e->recovery_passes_required[0]))); 1119 prt_newline(out); 1120 1121 unsigned long *errors_silent = kmalloc(sizeof(e->errors_silent), GFP_KERNEL); 1122 if (errors_silent) { 1123 le_bitvector_to_cpu(errors_silent, (void *) e->errors_silent, sizeof(e->errors_silent) * 8); 1124 1125 prt_printf(out, "Errors to silently fix:"); 1126 prt_tab(out); 1127 prt_bitflags_vector(out, bch2_sb_error_strs, errors_silent, sizeof(e->errors_silent) * 8); 1128 prt_newline(out); 1129 1130 kfree(errors_silent); 1131 } 1132 } 1133 1134 static const struct bch_sb_field_ops bch_sb_field_ops_ext = { 1135 .validate = bch2_sb_ext_validate, 1136 .to_text = bch2_sb_ext_to_text, 1137 }; 1138 1139 static const struct bch_sb_field_ops *bch2_sb_field_ops[] = { 1140 #define x(f, nr) \ 1141 [BCH_SB_FIELD_##f] = &bch_sb_field_ops_##f, 1142 BCH_SB_FIELDS() 1143 #undef x 1144 }; 1145 1146 static const struct bch_sb_field_ops bch2_sb_field_null_ops; 1147 1148 static const struct bch_sb_field_ops *bch2_sb_field_type_ops(unsigned type) 1149 { 1150 return likely(type < ARRAY_SIZE(bch2_sb_field_ops)) 1151 ? bch2_sb_field_ops[type] 1152 : &bch2_sb_field_null_ops; 1153 } 1154 1155 static int bch2_sb_field_validate(struct bch_sb *sb, struct bch_sb_field *f, 1156 struct printbuf *err) 1157 { 1158 unsigned type = le32_to_cpu(f->type); 1159 struct printbuf field_err = PRINTBUF; 1160 const struct bch_sb_field_ops *ops = bch2_sb_field_type_ops(type); 1161 int ret; 1162 1163 ret = ops->validate ? ops->validate(sb, f, &field_err) : 0; 1164 if (ret) { 1165 prt_printf(err, "Invalid superblock section %s: %s", 1166 bch2_sb_fields[type], field_err.buf); 1167 prt_newline(err); 1168 bch2_sb_field_to_text(err, sb, f); 1169 } 1170 1171 printbuf_exit(&field_err); 1172 return ret; 1173 } 1174 1175 void bch2_sb_field_to_text(struct printbuf *out, struct bch_sb *sb, 1176 struct bch_sb_field *f) 1177 { 1178 unsigned type = le32_to_cpu(f->type); 1179 const struct bch_sb_field_ops *ops = bch2_sb_field_type_ops(type); 1180 1181 if (!out->nr_tabstops) 1182 printbuf_tabstop_push(out, 32); 1183 1184 if (type < BCH_SB_FIELD_NR) 1185 prt_printf(out, "%s", bch2_sb_fields[type]); 1186 else 1187 prt_printf(out, "(unknown field %u)", type); 1188 1189 prt_printf(out, " (size %zu):", vstruct_bytes(f)); 1190 prt_newline(out); 1191 1192 if (ops->to_text) { 1193 printbuf_indent_add(out, 2); 1194 ops->to_text(out, sb, f); 1195 printbuf_indent_sub(out, 2); 1196 } 1197 } 1198 1199 void bch2_sb_layout_to_text(struct printbuf *out, struct bch_sb_layout *l) 1200 { 1201 unsigned i; 1202 1203 prt_printf(out, "Type: %u", l->layout_type); 1204 prt_newline(out); 1205 1206 prt_str(out, "Superblock max size: "); 1207 prt_units_u64(out, 512 << l->sb_max_size_bits); 1208 prt_newline(out); 1209 1210 prt_printf(out, "Nr superblocks: %u", l->nr_superblocks); 1211 prt_newline(out); 1212 1213 prt_str(out, "Offsets: "); 1214 for (i = 0; i < l->nr_superblocks; i++) { 1215 if (i) 1216 prt_str(out, ", "); 1217 prt_printf(out, "%llu", le64_to_cpu(l->sb_offset[i])); 1218 } 1219 prt_newline(out); 1220 } 1221 1222 void bch2_sb_to_text(struct printbuf *out, struct bch_sb *sb, 1223 bool print_layout, unsigned fields) 1224 { 1225 struct bch_sb_field *f; 1226 u64 fields_have = 0; 1227 unsigned nr_devices = 0; 1228 1229 if (!out->nr_tabstops) 1230 printbuf_tabstop_push(out, 44); 1231 1232 for (int i = 0; i < sb->nr_devices; i++) 1233 nr_devices += bch2_dev_exists(sb, i); 1234 1235 prt_printf(out, "External UUID:"); 1236 prt_tab(out); 1237 pr_uuid(out, sb->user_uuid.b); 1238 prt_newline(out); 1239 1240 prt_printf(out, "Internal UUID:"); 1241 prt_tab(out); 1242 pr_uuid(out, sb->uuid.b); 1243 prt_newline(out); 1244 1245 prt_str(out, "Device index:"); 1246 prt_tab(out); 1247 prt_printf(out, "%u", sb->dev_idx); 1248 prt_newline(out); 1249 1250 prt_str(out, "Label:"); 1251 prt_tab(out); 1252 prt_printf(out, "%.*s", (int) sizeof(sb->label), sb->label); 1253 prt_newline(out); 1254 1255 prt_str(out, "Version:"); 1256 prt_tab(out); 1257 bch2_version_to_text(out, le16_to_cpu(sb->version)); 1258 prt_newline(out); 1259 1260 prt_str(out, "Version upgrade complete:"); 1261 prt_tab(out); 1262 bch2_version_to_text(out, BCH_SB_VERSION_UPGRADE_COMPLETE(sb)); 1263 prt_newline(out); 1264 1265 prt_printf(out, "Oldest version on disk:"); 1266 prt_tab(out); 1267 bch2_version_to_text(out, le16_to_cpu(sb->version_min)); 1268 prt_newline(out); 1269 1270 prt_printf(out, "Created:"); 1271 prt_tab(out); 1272 if (sb->time_base_lo) 1273 bch2_prt_datetime(out, div_u64(le64_to_cpu(sb->time_base_lo), NSEC_PER_SEC)); 1274 else 1275 prt_printf(out, "(not set)"); 1276 prt_newline(out); 1277 1278 prt_printf(out, "Sequence number:"); 1279 prt_tab(out); 1280 prt_printf(out, "%llu", le64_to_cpu(sb->seq)); 1281 prt_newline(out); 1282 1283 prt_printf(out, "Superblock size:"); 1284 prt_tab(out); 1285 prt_printf(out, "%zu", vstruct_bytes(sb)); 1286 prt_newline(out); 1287 1288 prt_printf(out, "Clean:"); 1289 prt_tab(out); 1290 prt_printf(out, "%llu", BCH_SB_CLEAN(sb)); 1291 prt_newline(out); 1292 1293 prt_printf(out, "Devices:"); 1294 prt_tab(out); 1295 prt_printf(out, "%u", nr_devices); 1296 prt_newline(out); 1297 1298 prt_printf(out, "Sections:"); 1299 vstruct_for_each(sb, f) 1300 fields_have |= 1 << le32_to_cpu(f->type); 1301 prt_tab(out); 1302 prt_bitflags(out, bch2_sb_fields, fields_have); 1303 prt_newline(out); 1304 1305 prt_printf(out, "Features:"); 1306 prt_tab(out); 1307 prt_bitflags(out, bch2_sb_features, le64_to_cpu(sb->features[0])); 1308 prt_newline(out); 1309 1310 prt_printf(out, "Compat features:"); 1311 prt_tab(out); 1312 prt_bitflags(out, bch2_sb_compat, le64_to_cpu(sb->compat[0])); 1313 prt_newline(out); 1314 1315 prt_newline(out); 1316 prt_printf(out, "Options:"); 1317 prt_newline(out); 1318 printbuf_indent_add(out, 2); 1319 { 1320 enum bch_opt_id id; 1321 1322 for (id = 0; id < bch2_opts_nr; id++) { 1323 const struct bch_option *opt = bch2_opt_table + id; 1324 1325 if (opt->get_sb != BCH2_NO_SB_OPT) { 1326 u64 v = bch2_opt_from_sb(sb, id); 1327 1328 prt_printf(out, "%s:", opt->attr.name); 1329 prt_tab(out); 1330 bch2_opt_to_text(out, NULL, sb, opt, v, 1331 OPT_HUMAN_READABLE|OPT_SHOW_FULL_LIST); 1332 prt_newline(out); 1333 } 1334 } 1335 } 1336 1337 printbuf_indent_sub(out, 2); 1338 1339 if (print_layout) { 1340 prt_newline(out); 1341 prt_printf(out, "layout:"); 1342 prt_newline(out); 1343 printbuf_indent_add(out, 2); 1344 bch2_sb_layout_to_text(out, &sb->layout); 1345 printbuf_indent_sub(out, 2); 1346 } 1347 1348 vstruct_for_each(sb, f) 1349 if (fields & (1 << le32_to_cpu(f->type))) { 1350 prt_newline(out); 1351 bch2_sb_field_to_text(out, sb, f); 1352 } 1353 } 1354