1 // SPDX-License-Identifier: GPL-2.0 2 3 #include "bcachefs.h" 4 #include "checksum.h" 5 #include "disk_groups.h" 6 #include "ec.h" 7 #include "error.h" 8 #include "journal.h" 9 #include "journal_sb.h" 10 #include "journal_seq_blacklist.h" 11 #include "recovery.h" 12 #include "replicas.h" 13 #include "quota.h" 14 #include "sb-clean.h" 15 #include "sb-counters.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 }; 34 35 static const struct bch2_metadata_version bch2_metadata_versions[] = { 36 #define x(n, v) { \ 37 .version = v, \ 38 .name = #n, \ 39 }, 40 BCH_METADATA_VERSIONS() 41 #undef x 42 }; 43 44 void bch2_version_to_text(struct printbuf *out, unsigned v) 45 { 46 const char *str = "(unknown version)"; 47 48 for (unsigned i = 0; i < ARRAY_SIZE(bch2_metadata_versions); i++) 49 if (bch2_metadata_versions[i].version == v) { 50 str = bch2_metadata_versions[i].name; 51 break; 52 } 53 54 prt_printf(out, "%u.%u: %s", BCH_VERSION_MAJOR(v), BCH_VERSION_MINOR(v), str); 55 } 56 57 unsigned bch2_latest_compatible_version(unsigned v) 58 { 59 if (!BCH_VERSION_MAJOR(v)) 60 return v; 61 62 for (unsigned i = 0; i < ARRAY_SIZE(bch2_metadata_versions); i++) 63 if (bch2_metadata_versions[i].version > v && 64 BCH_VERSION_MAJOR(bch2_metadata_versions[i].version) == 65 BCH_VERSION_MAJOR(v)) 66 v = bch2_metadata_versions[i].version; 67 68 return v; 69 } 70 71 const char * const bch2_sb_fields[] = { 72 #define x(name, nr) #name, 73 BCH_SB_FIELDS() 74 #undef x 75 NULL 76 }; 77 78 static int bch2_sb_field_validate(struct bch_sb *, struct bch_sb_field *, 79 struct printbuf *); 80 81 struct bch_sb_field *bch2_sb_field_get_id(struct bch_sb *sb, 82 enum bch_sb_field_type type) 83 { 84 /* XXX: need locking around superblock to access optional fields */ 85 86 vstruct_for_each(sb, f) 87 if (le32_to_cpu(f->type) == type) 88 return f; 89 return NULL; 90 } 91 92 static struct bch_sb_field *__bch2_sb_field_resize(struct bch_sb_handle *sb, 93 struct bch_sb_field *f, 94 unsigned u64s) 95 { 96 unsigned old_u64s = f ? le32_to_cpu(f->u64s) : 0; 97 unsigned sb_u64s = le32_to_cpu(sb->sb->u64s) + u64s - old_u64s; 98 99 BUG_ON(__vstruct_bytes(struct bch_sb, sb_u64s) > sb->buffer_size); 100 101 if (!f && !u64s) { 102 /* nothing to do: */ 103 } else if (!f) { 104 f = vstruct_last(sb->sb); 105 memset(f, 0, sizeof(u64) * u64s); 106 f->u64s = cpu_to_le32(u64s); 107 f->type = 0; 108 } else { 109 void *src, *dst; 110 111 src = vstruct_end(f); 112 113 if (u64s) { 114 f->u64s = cpu_to_le32(u64s); 115 dst = vstruct_end(f); 116 } else { 117 dst = f; 118 } 119 120 memmove(dst, src, vstruct_end(sb->sb) - src); 121 122 if (dst > src) 123 memset(src, 0, dst - src); 124 } 125 126 sb->sb->u64s = cpu_to_le32(sb_u64s); 127 128 return u64s ? f : NULL; 129 } 130 131 void bch2_sb_field_delete(struct bch_sb_handle *sb, 132 enum bch_sb_field_type type) 133 { 134 struct bch_sb_field *f = bch2_sb_field_get_id(sb->sb, type); 135 136 if (f) 137 __bch2_sb_field_resize(sb, f, 0); 138 } 139 140 /* Superblock realloc/free: */ 141 142 void bch2_free_super(struct bch_sb_handle *sb) 143 { 144 kfree(sb->bio); 145 if (!IS_ERR_OR_NULL(sb->bdev_handle)) 146 bdev_release(sb->bdev_handle); 147 kfree(sb->holder); 148 kfree(sb->sb_name); 149 150 kfree(sb->sb); 151 memset(sb, 0, sizeof(*sb)); 152 } 153 154 int bch2_sb_realloc(struct bch_sb_handle *sb, unsigned u64s) 155 { 156 size_t new_bytes = __vstruct_bytes(struct bch_sb, u64s); 157 size_t new_buffer_size; 158 struct bch_sb *new_sb; 159 struct bio *bio; 160 161 if (sb->bdev) 162 new_bytes = max_t(size_t, new_bytes, bdev_logical_block_size(sb->bdev)); 163 164 new_buffer_size = roundup_pow_of_two(new_bytes); 165 166 if (sb->sb && sb->buffer_size >= new_buffer_size) 167 return 0; 168 169 if (sb->sb && sb->have_layout) { 170 u64 max_bytes = 512 << sb->sb->layout.sb_max_size_bits; 171 172 if (new_bytes > max_bytes) { 173 struct printbuf buf = PRINTBUF; 174 175 prt_bdevname(&buf, sb->bdev); 176 prt_printf(&buf, ": superblock too big: want %zu but have %llu", new_bytes, max_bytes); 177 pr_err("%s", buf.buf); 178 printbuf_exit(&buf); 179 return -BCH_ERR_ENOSPC_sb; 180 } 181 } 182 183 if (sb->buffer_size >= new_buffer_size && sb->sb) 184 return 0; 185 186 if (dynamic_fault("bcachefs:add:super_realloc")) 187 return -BCH_ERR_ENOMEM_sb_realloc_injected; 188 189 new_sb = krealloc(sb->sb, new_buffer_size, GFP_NOFS|__GFP_ZERO); 190 if (!new_sb) 191 return -BCH_ERR_ENOMEM_sb_buf_realloc; 192 193 sb->sb = new_sb; 194 195 if (sb->have_bio) { 196 unsigned nr_bvecs = buf_pages(sb->sb, new_buffer_size); 197 198 bio = bio_kmalloc(nr_bvecs, GFP_KERNEL); 199 if (!bio) 200 return -BCH_ERR_ENOMEM_sb_bio_realloc; 201 202 bio_init(bio, NULL, bio->bi_inline_vecs, nr_bvecs, 0); 203 204 kfree(sb->bio); 205 sb->bio = bio; 206 } 207 208 sb->buffer_size = new_buffer_size; 209 210 return 0; 211 } 212 213 struct bch_sb_field *bch2_sb_field_resize_id(struct bch_sb_handle *sb, 214 enum bch_sb_field_type type, 215 unsigned u64s) 216 { 217 struct bch_sb_field *f = bch2_sb_field_get_id(sb->sb, type); 218 ssize_t old_u64s = f ? le32_to_cpu(f->u64s) : 0; 219 ssize_t d = -old_u64s + u64s; 220 221 if (bch2_sb_realloc(sb, le32_to_cpu(sb->sb->u64s) + d)) 222 return NULL; 223 224 if (sb->fs_sb) { 225 struct bch_fs *c = container_of(sb, struct bch_fs, disk_sb); 226 227 lockdep_assert_held(&c->sb_lock); 228 229 /* XXX: we're not checking that offline device have enough space */ 230 231 for_each_online_member(c, ca) { 232 struct bch_sb_handle *dev_sb = &ca->disk_sb; 233 234 if (bch2_sb_realloc(dev_sb, le32_to_cpu(dev_sb->sb->u64s) + d)) { 235 percpu_ref_put(&ca->ref); 236 return NULL; 237 } 238 } 239 } 240 241 f = bch2_sb_field_get_id(sb->sb, type); 242 f = __bch2_sb_field_resize(sb, f, u64s); 243 if (f) 244 f->type = cpu_to_le32(type); 245 return f; 246 } 247 248 struct bch_sb_field *bch2_sb_field_get_minsize_id(struct bch_sb_handle *sb, 249 enum bch_sb_field_type type, 250 unsigned u64s) 251 { 252 struct bch_sb_field *f = bch2_sb_field_get_id(sb->sb, type); 253 254 if (!f || le32_to_cpu(f->u64s) < u64s) 255 f = bch2_sb_field_resize_id(sb, type, u64s); 256 return f; 257 } 258 259 /* Superblock validate: */ 260 261 static int validate_sb_layout(struct bch_sb_layout *layout, struct printbuf *out) 262 { 263 u64 offset, prev_offset, max_sectors; 264 unsigned i; 265 266 BUILD_BUG_ON(sizeof(struct bch_sb_layout) != 512); 267 268 if (!uuid_equal(&layout->magic, &BCACHE_MAGIC) && 269 !uuid_equal(&layout->magic, &BCHFS_MAGIC)) { 270 prt_printf(out, "Not a bcachefs superblock layout"); 271 return -BCH_ERR_invalid_sb_layout; 272 } 273 274 if (layout->layout_type != 0) { 275 prt_printf(out, "Invalid superblock layout type %u", 276 layout->layout_type); 277 return -BCH_ERR_invalid_sb_layout_type; 278 } 279 280 if (!layout->nr_superblocks) { 281 prt_printf(out, "Invalid superblock layout: no superblocks"); 282 return -BCH_ERR_invalid_sb_layout_nr_superblocks; 283 } 284 285 if (layout->nr_superblocks > ARRAY_SIZE(layout->sb_offset)) { 286 prt_printf(out, "Invalid superblock layout: too many superblocks"); 287 return -BCH_ERR_invalid_sb_layout_nr_superblocks; 288 } 289 290 max_sectors = 1 << layout->sb_max_size_bits; 291 292 prev_offset = le64_to_cpu(layout->sb_offset[0]); 293 294 for (i = 1; i < layout->nr_superblocks; i++) { 295 offset = le64_to_cpu(layout->sb_offset[i]); 296 297 if (offset < prev_offset + max_sectors) { 298 prt_printf(out, "Invalid superblock layout: superblocks overlap\n" 299 " (sb %u ends at %llu next starts at %llu", 300 i - 1, prev_offset + max_sectors, offset); 301 return -BCH_ERR_invalid_sb_layout_superblocks_overlap; 302 } 303 prev_offset = offset; 304 } 305 306 return 0; 307 } 308 309 static int bch2_sb_compatible(struct bch_sb *sb, struct printbuf *out) 310 { 311 u16 version = le16_to_cpu(sb->version); 312 u16 version_min = le16_to_cpu(sb->version_min); 313 314 if (!bch2_version_compatible(version)) { 315 prt_str(out, "Unsupported superblock version "); 316 bch2_version_to_text(out, version); 317 prt_str(out, " (min "); 318 bch2_version_to_text(out, bcachefs_metadata_version_min); 319 prt_str(out, ", max "); 320 bch2_version_to_text(out, bcachefs_metadata_version_current); 321 prt_str(out, ")"); 322 return -BCH_ERR_invalid_sb_version; 323 } 324 325 if (!bch2_version_compatible(version_min)) { 326 prt_str(out, "Unsupported superblock version_min "); 327 bch2_version_to_text(out, version_min); 328 prt_str(out, " (min "); 329 bch2_version_to_text(out, bcachefs_metadata_version_min); 330 prt_str(out, ", max "); 331 bch2_version_to_text(out, bcachefs_metadata_version_current); 332 prt_str(out, ")"); 333 return -BCH_ERR_invalid_sb_version; 334 } 335 336 if (version_min > version) { 337 prt_str(out, "Bad minimum version "); 338 bch2_version_to_text(out, version_min); 339 prt_str(out, ", greater than version field "); 340 bch2_version_to_text(out, version); 341 return -BCH_ERR_invalid_sb_version; 342 } 343 344 return 0; 345 } 346 347 static int bch2_sb_validate(struct bch_sb_handle *disk_sb, struct printbuf *out, 348 int rw) 349 { 350 struct bch_sb *sb = disk_sb->sb; 351 struct bch_sb_field_members_v1 *mi; 352 enum bch_opt_id opt_id; 353 u16 block_size; 354 int ret; 355 356 ret = bch2_sb_compatible(sb, out); 357 if (ret) 358 return ret; 359 360 if (sb->features[1] || 361 (le64_to_cpu(sb->features[0]) & (~0ULL << BCH_FEATURE_NR))) { 362 prt_printf(out, "Filesystem has incompatible features"); 363 return -BCH_ERR_invalid_sb_features; 364 } 365 366 block_size = le16_to_cpu(sb->block_size); 367 368 if (block_size > PAGE_SECTORS) { 369 prt_printf(out, "Block size too big (got %u, max %u)", 370 block_size, PAGE_SECTORS); 371 return -BCH_ERR_invalid_sb_block_size; 372 } 373 374 if (bch2_is_zero(sb->user_uuid.b, sizeof(sb->user_uuid))) { 375 prt_printf(out, "Bad user UUID (got zeroes)"); 376 return -BCH_ERR_invalid_sb_uuid; 377 } 378 379 if (bch2_is_zero(sb->uuid.b, sizeof(sb->uuid))) { 380 prt_printf(out, "Bad internal UUID (got zeroes)"); 381 return -BCH_ERR_invalid_sb_uuid; 382 } 383 384 if (!sb->nr_devices || 385 sb->nr_devices > BCH_SB_MEMBERS_MAX) { 386 prt_printf(out, "Bad number of member devices %u (max %u)", 387 sb->nr_devices, BCH_SB_MEMBERS_MAX); 388 return -BCH_ERR_invalid_sb_too_many_members; 389 } 390 391 if (sb->dev_idx >= sb->nr_devices) { 392 prt_printf(out, "Bad dev_idx (got %u, nr_devices %u)", 393 sb->dev_idx, sb->nr_devices); 394 return -BCH_ERR_invalid_sb_dev_idx; 395 } 396 397 if (!sb->time_precision || 398 le32_to_cpu(sb->time_precision) > NSEC_PER_SEC) { 399 prt_printf(out, "Invalid time precision: %u (min 1, max %lu)", 400 le32_to_cpu(sb->time_precision), NSEC_PER_SEC); 401 return -BCH_ERR_invalid_sb_time_precision; 402 } 403 404 if (rw == READ) { 405 /* 406 * Been seeing a bug where these are getting inexplicably 407 * zeroed, so we're now validating them, but we have to be 408 * careful not to preven people's filesystems from mounting: 409 */ 410 if (!BCH_SB_JOURNAL_FLUSH_DELAY(sb)) 411 SET_BCH_SB_JOURNAL_FLUSH_DELAY(sb, 1000); 412 if (!BCH_SB_JOURNAL_RECLAIM_DELAY(sb)) 413 SET_BCH_SB_JOURNAL_RECLAIM_DELAY(sb, 1000); 414 415 if (!BCH_SB_VERSION_UPGRADE_COMPLETE(sb)) 416 SET_BCH_SB_VERSION_UPGRADE_COMPLETE(sb, le16_to_cpu(sb->version)); 417 } 418 419 for (opt_id = 0; opt_id < bch2_opts_nr; opt_id++) { 420 const struct bch_option *opt = bch2_opt_table + opt_id; 421 422 if (opt->get_sb != BCH2_NO_SB_OPT) { 423 u64 v = bch2_opt_from_sb(sb, opt_id); 424 425 prt_printf(out, "Invalid option "); 426 ret = bch2_opt_validate(opt, v, out); 427 if (ret) 428 return ret; 429 430 printbuf_reset(out); 431 } 432 } 433 434 /* validate layout */ 435 ret = validate_sb_layout(&sb->layout, out); 436 if (ret) 437 return ret; 438 439 vstruct_for_each(sb, f) { 440 if (!f->u64s) { 441 prt_printf(out, "Invalid superblock: optional field with size 0 (type %u)", 442 le32_to_cpu(f->type)); 443 return -BCH_ERR_invalid_sb_field_size; 444 } 445 446 if (vstruct_next(f) > vstruct_last(sb)) { 447 prt_printf(out, "Invalid superblock: optional field extends past end of superblock (type %u)", 448 le32_to_cpu(f->type)); 449 return -BCH_ERR_invalid_sb_field_size; 450 } 451 } 452 453 /* members must be validated first: */ 454 mi = bch2_sb_field_get(sb, members_v1); 455 if (!mi) { 456 prt_printf(out, "Invalid superblock: member info area missing"); 457 return -BCH_ERR_invalid_sb_members_missing; 458 } 459 460 ret = bch2_sb_field_validate(sb, &mi->field, out); 461 if (ret) 462 return ret; 463 464 vstruct_for_each(sb, f) { 465 if (le32_to_cpu(f->type) == BCH_SB_FIELD_members_v1) 466 continue; 467 468 ret = bch2_sb_field_validate(sb, f, out); 469 if (ret) 470 return ret; 471 } 472 473 return 0; 474 } 475 476 /* device open: */ 477 478 static unsigned long le_ulong_to_cpu(unsigned long v) 479 { 480 return sizeof(unsigned long) == 8 481 ? le64_to_cpu(v) 482 : le32_to_cpu(v); 483 } 484 485 static void le_bitvector_to_cpu(unsigned long *dst, unsigned long *src, unsigned nr) 486 { 487 BUG_ON(nr & (BITS_PER_TYPE(long) - 1)); 488 489 for (unsigned i = 0; i < BITS_TO_LONGS(nr); i++) 490 dst[i] = le_ulong_to_cpu(src[i]); 491 } 492 493 static void bch2_sb_update(struct bch_fs *c) 494 { 495 struct bch_sb *src = c->disk_sb.sb; 496 497 lockdep_assert_held(&c->sb_lock); 498 499 c->sb.uuid = src->uuid; 500 c->sb.user_uuid = src->user_uuid; 501 c->sb.version = le16_to_cpu(src->version); 502 c->sb.version_min = le16_to_cpu(src->version_min); 503 c->sb.version_upgrade_complete = BCH_SB_VERSION_UPGRADE_COMPLETE(src); 504 c->sb.nr_devices = src->nr_devices; 505 c->sb.clean = BCH_SB_CLEAN(src); 506 c->sb.encryption_type = BCH_SB_ENCRYPTION_TYPE(src); 507 508 c->sb.nsec_per_time_unit = le32_to_cpu(src->time_precision); 509 c->sb.time_units_per_sec = NSEC_PER_SEC / c->sb.nsec_per_time_unit; 510 511 /* XXX this is wrong, we need a 96 or 128 bit integer type */ 512 c->sb.time_base_lo = div_u64(le64_to_cpu(src->time_base_lo), 513 c->sb.nsec_per_time_unit); 514 c->sb.time_base_hi = le32_to_cpu(src->time_base_hi); 515 516 c->sb.features = le64_to_cpu(src->features[0]); 517 c->sb.compat = le64_to_cpu(src->compat[0]); 518 519 memset(c->sb.errors_silent, 0, sizeof(c->sb.errors_silent)); 520 521 struct bch_sb_field_ext *ext = bch2_sb_field_get(src, ext); 522 if (ext) 523 le_bitvector_to_cpu(c->sb.errors_silent, (void *) ext->errors_silent, 524 sizeof(c->sb.errors_silent) * 8); 525 526 for_each_member_device(c, ca) { 527 struct bch_member m = bch2_sb_member_get(src, ca->dev_idx); 528 ca->mi = bch2_mi_to_cpu(&m); 529 } 530 } 531 532 static int __copy_super(struct bch_sb_handle *dst_handle, struct bch_sb *src) 533 { 534 struct bch_sb_field *src_f, *dst_f; 535 struct bch_sb *dst = dst_handle->sb; 536 unsigned i; 537 538 dst->version = src->version; 539 dst->version_min = src->version_min; 540 dst->seq = src->seq; 541 dst->uuid = src->uuid; 542 dst->user_uuid = src->user_uuid; 543 memcpy(dst->label, src->label, sizeof(dst->label)); 544 545 dst->block_size = src->block_size; 546 dst->nr_devices = src->nr_devices; 547 548 dst->time_base_lo = src->time_base_lo; 549 dst->time_base_hi = src->time_base_hi; 550 dst->time_precision = src->time_precision; 551 dst->write_time = src->write_time; 552 553 memcpy(dst->flags, src->flags, sizeof(dst->flags)); 554 memcpy(dst->features, src->features, sizeof(dst->features)); 555 memcpy(dst->compat, src->compat, sizeof(dst->compat)); 556 557 for (i = 0; i < BCH_SB_FIELD_NR; i++) { 558 int d; 559 560 if ((1U << i) & BCH_SINGLE_DEVICE_SB_FIELDS) 561 continue; 562 563 src_f = bch2_sb_field_get_id(src, i); 564 dst_f = bch2_sb_field_get_id(dst, i); 565 566 d = (src_f ? le32_to_cpu(src_f->u64s) : 0) - 567 (dst_f ? le32_to_cpu(dst_f->u64s) : 0); 568 if (d > 0) { 569 int ret = bch2_sb_realloc(dst_handle, 570 le32_to_cpu(dst_handle->sb->u64s) + d); 571 572 if (ret) 573 return ret; 574 575 dst = dst_handle->sb; 576 dst_f = bch2_sb_field_get_id(dst, i); 577 } 578 579 dst_f = __bch2_sb_field_resize(dst_handle, dst_f, 580 src_f ? le32_to_cpu(src_f->u64s) : 0); 581 582 if (src_f) 583 memcpy(dst_f, src_f, vstruct_bytes(src_f)); 584 } 585 586 return 0; 587 } 588 589 int bch2_sb_to_fs(struct bch_fs *c, struct bch_sb *src) 590 { 591 int ret; 592 593 lockdep_assert_held(&c->sb_lock); 594 595 ret = bch2_sb_realloc(&c->disk_sb, 0) ?: 596 __copy_super(&c->disk_sb, src) ?: 597 bch2_sb_replicas_to_cpu_replicas(c) ?: 598 bch2_sb_disk_groups_to_cpu(c); 599 if (ret) 600 return ret; 601 602 bch2_sb_update(c); 603 return 0; 604 } 605 606 int bch2_sb_from_fs(struct bch_fs *c, struct bch_dev *ca) 607 { 608 return __copy_super(&ca->disk_sb, c->disk_sb.sb); 609 } 610 611 /* read superblock: */ 612 613 static int read_one_super(struct bch_sb_handle *sb, u64 offset, struct printbuf *err) 614 { 615 size_t bytes; 616 int ret; 617 reread: 618 bio_reset(sb->bio, sb->bdev, REQ_OP_READ|REQ_SYNC|REQ_META); 619 sb->bio->bi_iter.bi_sector = offset; 620 bch2_bio_map(sb->bio, sb->sb, sb->buffer_size); 621 622 ret = submit_bio_wait(sb->bio); 623 if (ret) { 624 prt_printf(err, "IO error: %i", ret); 625 return ret; 626 } 627 628 if (!uuid_equal(&sb->sb->magic, &BCACHE_MAGIC) && 629 !uuid_equal(&sb->sb->magic, &BCHFS_MAGIC)) { 630 prt_str(err, "Not a bcachefs superblock (got magic "); 631 pr_uuid(err, sb->sb->magic.b); 632 prt_str(err, ")"); 633 return -BCH_ERR_invalid_sb_magic; 634 } 635 636 ret = bch2_sb_compatible(sb->sb, err); 637 if (ret) 638 return ret; 639 640 bytes = vstruct_bytes(sb->sb); 641 642 if (bytes > 512 << sb->sb->layout.sb_max_size_bits) { 643 prt_printf(err, "Invalid superblock: too big (got %zu bytes, layout max %lu)", 644 bytes, 512UL << sb->sb->layout.sb_max_size_bits); 645 return -BCH_ERR_invalid_sb_too_big; 646 } 647 648 if (bytes > sb->buffer_size) { 649 ret = bch2_sb_realloc(sb, le32_to_cpu(sb->sb->u64s)); 650 if (ret) 651 return ret; 652 goto reread; 653 } 654 655 enum bch_csum_type csum_type = BCH_SB_CSUM_TYPE(sb->sb); 656 if (csum_type >= BCH_CSUM_NR) { 657 prt_printf(err, "unknown checksum type %llu", BCH_SB_CSUM_TYPE(sb->sb)); 658 return -BCH_ERR_invalid_sb_csum_type; 659 } 660 661 /* XXX: verify MACs */ 662 struct bch_csum csum = csum_vstruct(NULL, csum_type, null_nonce(), sb->sb); 663 if (bch2_crc_cmp(csum, sb->sb->csum)) { 664 bch2_csum_err_msg(err, csum_type, sb->sb->csum, csum); 665 return -BCH_ERR_invalid_sb_csum; 666 } 667 668 sb->seq = le64_to_cpu(sb->sb->seq); 669 670 return 0; 671 } 672 673 static int __bch2_read_super(const char *path, struct bch_opts *opts, 674 struct bch_sb_handle *sb, bool ignore_notbchfs_msg) 675 { 676 u64 offset = opt_get(*opts, sb); 677 struct bch_sb_layout layout; 678 struct printbuf err = PRINTBUF; 679 struct printbuf err2 = PRINTBUF; 680 __le64 *i; 681 int ret; 682 #ifndef __KERNEL__ 683 retry: 684 #endif 685 memset(sb, 0, sizeof(*sb)); 686 sb->mode = BLK_OPEN_READ; 687 sb->have_bio = true; 688 sb->holder = kmalloc(1, GFP_KERNEL); 689 if (!sb->holder) 690 return -ENOMEM; 691 692 sb->sb_name = kstrdup(path, GFP_KERNEL); 693 if (!sb->sb_name) 694 return -ENOMEM; 695 696 #ifndef __KERNEL__ 697 if (opt_get(*opts, direct_io) == false) 698 sb->mode |= BLK_OPEN_BUFFERED; 699 #endif 700 701 if (!opt_get(*opts, noexcl)) 702 sb->mode |= BLK_OPEN_EXCL; 703 704 if (!opt_get(*opts, nochanges)) 705 sb->mode |= BLK_OPEN_WRITE; 706 707 sb->bdev_handle = bdev_open_by_path(path, sb->mode, sb->holder, &bch2_sb_handle_bdev_ops); 708 if (IS_ERR(sb->bdev_handle) && 709 PTR_ERR(sb->bdev_handle) == -EACCES && 710 opt_get(*opts, read_only)) { 711 sb->mode &= ~BLK_OPEN_WRITE; 712 713 sb->bdev_handle = bdev_open_by_path(path, sb->mode, sb->holder, &bch2_sb_handle_bdev_ops); 714 if (!IS_ERR(sb->bdev_handle)) 715 opt_set(*opts, nochanges, true); 716 } 717 718 if (IS_ERR(sb->bdev_handle)) { 719 ret = PTR_ERR(sb->bdev_handle); 720 goto out; 721 } 722 sb->bdev = sb->bdev_handle->bdev; 723 724 ret = bch2_sb_realloc(sb, 0); 725 if (ret) { 726 prt_printf(&err, "error allocating memory for superblock"); 727 goto err; 728 } 729 730 if (bch2_fs_init_fault("read_super")) { 731 prt_printf(&err, "dynamic fault"); 732 ret = -EFAULT; 733 goto err; 734 } 735 736 ret = read_one_super(sb, offset, &err); 737 if (!ret) 738 goto got_super; 739 740 if (opt_defined(*opts, sb)) 741 goto err; 742 743 prt_printf(&err2, "bcachefs (%s): error reading default superblock: %s\n", 744 path, err.buf); 745 if (ret == -BCH_ERR_invalid_sb_magic && ignore_notbchfs_msg) 746 printk(KERN_INFO "%s", err2.buf); 747 else 748 printk(KERN_ERR "%s", err2.buf); 749 750 printbuf_exit(&err2); 751 printbuf_reset(&err); 752 753 /* 754 * Error reading primary superblock - read location of backup 755 * superblocks: 756 */ 757 bio_reset(sb->bio, sb->bdev, REQ_OP_READ|REQ_SYNC|REQ_META); 758 sb->bio->bi_iter.bi_sector = BCH_SB_LAYOUT_SECTOR; 759 /* 760 * use sb buffer to read layout, since sb buffer is page aligned but 761 * layout won't be: 762 */ 763 bch2_bio_map(sb->bio, sb->sb, sizeof(struct bch_sb_layout)); 764 765 ret = submit_bio_wait(sb->bio); 766 if (ret) { 767 prt_printf(&err, "IO error: %i", ret); 768 goto err; 769 } 770 771 memcpy(&layout, sb->sb, sizeof(layout)); 772 ret = validate_sb_layout(&layout, &err); 773 if (ret) 774 goto err; 775 776 for (i = layout.sb_offset; 777 i < layout.sb_offset + layout.nr_superblocks; i++) { 778 offset = le64_to_cpu(*i); 779 780 if (offset == opt_get(*opts, sb)) 781 continue; 782 783 ret = read_one_super(sb, offset, &err); 784 if (!ret) 785 goto got_super; 786 } 787 788 goto err; 789 790 got_super: 791 if (le16_to_cpu(sb->sb->block_size) << 9 < 792 bdev_logical_block_size(sb->bdev) && 793 opt_get(*opts, direct_io)) { 794 #ifndef __KERNEL__ 795 opt_set(*opts, direct_io, false); 796 bch2_free_super(sb); 797 goto retry; 798 #endif 799 prt_printf(&err, "block size (%u) smaller than device block size (%u)", 800 le16_to_cpu(sb->sb->block_size) << 9, 801 bdev_logical_block_size(sb->bdev)); 802 ret = -BCH_ERR_block_size_too_small; 803 goto err; 804 } 805 806 ret = 0; 807 sb->have_layout = true; 808 809 ret = bch2_sb_validate(sb, &err, READ); 810 if (ret) { 811 printk(KERN_ERR "bcachefs (%s): error validating superblock: %s\n", 812 path, err.buf); 813 goto err_no_print; 814 } 815 out: 816 printbuf_exit(&err); 817 return ret; 818 err: 819 printk(KERN_ERR "bcachefs (%s): error reading superblock: %s\n", 820 path, err.buf); 821 err_no_print: 822 bch2_free_super(sb); 823 goto out; 824 } 825 826 int bch2_read_super(const char *path, struct bch_opts *opts, 827 struct bch_sb_handle *sb) 828 { 829 return __bch2_read_super(path, opts, sb, false); 830 } 831 832 /* provide a silenced version for mount.bcachefs */ 833 834 int bch2_read_super_silent(const char *path, struct bch_opts *opts, 835 struct bch_sb_handle *sb) 836 { 837 return __bch2_read_super(path, opts, sb, true); 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 printbuf err = PRINTBUF; 909 unsigned sb = 0, nr_wrote; 910 struct bch_devs_mask sb_written; 911 bool wrote, can_mount_without_written, can_mount_with_written; 912 unsigned degraded_flags = BCH_FORCE_IF_DEGRADED; 913 int ret = 0; 914 915 trace_and_count(c, write_super, c, _RET_IP_); 916 917 if (c->opts.very_degraded) 918 degraded_flags |= BCH_FORCE_IF_LOST; 919 920 lockdep_assert_held(&c->sb_lock); 921 922 closure_init_stack(cl); 923 memset(&sb_written, 0, sizeof(sb_written)); 924 925 /* Make sure we're using the new magic numbers: */ 926 c->disk_sb.sb->magic = BCHFS_MAGIC; 927 c->disk_sb.sb->layout.magic = BCHFS_MAGIC; 928 929 le64_add_cpu(&c->disk_sb.sb->seq, 1); 930 931 struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2); 932 for_each_online_member(c, ca) 933 __bch2_members_v2_get_mut(mi, ca->dev_idx)->seq = c->disk_sb.sb->seq; 934 c->disk_sb.sb->write_time = cpu_to_le64(ktime_get_real_seconds()); 935 936 if (test_bit(BCH_FS_error, &c->flags)) 937 SET_BCH_SB_HAS_ERRORS(c->disk_sb.sb, 1); 938 if (test_bit(BCH_FS_topology_error, &c->flags)) 939 SET_BCH_SB_HAS_TOPOLOGY_ERRORS(c->disk_sb.sb, 1); 940 941 SET_BCH_SB_BIG_ENDIAN(c->disk_sb.sb, CPU_BIG_ENDIAN); 942 943 bch2_sb_counters_from_cpu(c); 944 bch2_sb_members_from_cpu(c); 945 bch2_sb_members_cpy_v2_v1(&c->disk_sb); 946 bch2_sb_errors_from_cpu(c); 947 bch2_sb_downgrade_update(c); 948 949 for_each_online_member(c, ca) 950 bch2_sb_from_fs(c, ca); 951 952 for_each_online_member(c, ca) { 953 printbuf_reset(&err); 954 955 ret = bch2_sb_validate(&ca->disk_sb, &err, WRITE); 956 if (ret) { 957 bch2_fs_inconsistent(c, "sb invalid before write: %s", err.buf); 958 percpu_ref_put(&ca->io_ref); 959 goto out; 960 } 961 } 962 963 if (c->opts.nochanges) 964 goto out; 965 966 /* 967 * Defer writing the superblock until filesystem initialization is 968 * complete - don't write out a partly initialized superblock: 969 */ 970 if (!BCH_SB_INITIALIZED(c->disk_sb.sb)) 971 goto out; 972 973 if (le16_to_cpu(c->disk_sb.sb->version) > bcachefs_metadata_version_current) { 974 struct printbuf buf = PRINTBUF; 975 prt_printf(&buf, "attempting to write superblock that wasn't version downgraded ("); 976 bch2_version_to_text(&buf, le16_to_cpu(c->disk_sb.sb->version)); 977 prt_str(&buf, " > "); 978 bch2_version_to_text(&buf, bcachefs_metadata_version_current); 979 prt_str(&buf, ")"); 980 bch2_fs_fatal_error(c, "%s", buf.buf); 981 printbuf_exit(&buf); 982 return -BCH_ERR_sb_not_downgraded; 983 } 984 985 for_each_online_member(c, ca) { 986 __set_bit(ca->dev_idx, sb_written.d); 987 ca->sb_write_error = 0; 988 } 989 990 for_each_online_member(c, ca) 991 read_back_super(c, ca); 992 closure_sync(cl); 993 994 for_each_online_member(c, ca) { 995 if (ca->sb_write_error) 996 continue; 997 998 if (le64_to_cpu(ca->sb_read_scratch->seq) < ca->disk_sb.seq) { 999 bch2_fs_fatal_error(c, 1000 "Superblock write was silently dropped! (seq %llu expected %llu)", 1001 le64_to_cpu(ca->sb_read_scratch->seq), 1002 ca->disk_sb.seq); 1003 percpu_ref_put(&ca->io_ref); 1004 ret = -BCH_ERR_erofs_sb_err; 1005 goto out; 1006 } 1007 1008 if (le64_to_cpu(ca->sb_read_scratch->seq) > ca->disk_sb.seq) { 1009 bch2_fs_fatal_error(c, 1010 "Superblock modified by another process (seq %llu expected %llu)", 1011 le64_to_cpu(ca->sb_read_scratch->seq), 1012 ca->disk_sb.seq); 1013 percpu_ref_put(&ca->io_ref); 1014 ret = -BCH_ERR_erofs_sb_err; 1015 goto out; 1016 } 1017 } 1018 1019 do { 1020 wrote = false; 1021 for_each_online_member(c, ca) 1022 if (!ca->sb_write_error && 1023 sb < ca->disk_sb.sb->layout.nr_superblocks) { 1024 write_one_super(c, ca, sb); 1025 wrote = true; 1026 } 1027 closure_sync(cl); 1028 sb++; 1029 } while (wrote); 1030 1031 for_each_online_member(c, ca) { 1032 if (ca->sb_write_error) 1033 __clear_bit(ca->dev_idx, sb_written.d); 1034 else 1035 ca->disk_sb.seq = le64_to_cpu(ca->disk_sb.sb->seq); 1036 } 1037 1038 nr_wrote = dev_mask_nr(&sb_written); 1039 1040 can_mount_with_written = 1041 bch2_have_enough_devs(c, sb_written, degraded_flags, false); 1042 1043 for (unsigned i = 0; i < ARRAY_SIZE(sb_written.d); i++) 1044 sb_written.d[i] = ~sb_written.d[i]; 1045 1046 can_mount_without_written = 1047 bch2_have_enough_devs(c, sb_written, degraded_flags, false); 1048 1049 /* 1050 * If we would be able to mount _without_ the devices we successfully 1051 * wrote superblocks to, we weren't able to write to enough devices: 1052 * 1053 * Exception: if we can mount without the successes because we haven't 1054 * written anything (new filesystem), we continue if we'd be able to 1055 * mount with the devices we did successfully write to: 1056 */ 1057 if (bch2_fs_fatal_err_on(!nr_wrote || 1058 !can_mount_with_written || 1059 (can_mount_without_written && 1060 !can_mount_with_written), c, 1061 "Unable to write superblock to sufficient devices (from %ps)", 1062 (void *) _RET_IP_)) 1063 ret = -1; 1064 out: 1065 /* Make new options visible after they're persistent: */ 1066 bch2_sb_update(c); 1067 printbuf_exit(&err); 1068 return ret; 1069 } 1070 1071 void __bch2_check_set_feature(struct bch_fs *c, unsigned feat) 1072 { 1073 mutex_lock(&c->sb_lock); 1074 if (!(c->sb.features & (1ULL << feat))) { 1075 c->disk_sb.sb->features[0] |= cpu_to_le64(1ULL << feat); 1076 1077 bch2_write_super(c); 1078 } 1079 mutex_unlock(&c->sb_lock); 1080 } 1081 1082 /* Downgrade if superblock is at a higher version than currently supported: */ 1083 bool bch2_check_version_downgrade(struct bch_fs *c) 1084 { 1085 bool ret = bcachefs_metadata_version_current < c->sb.version; 1086 1087 lockdep_assert_held(&c->sb_lock); 1088 1089 /* 1090 * Downgrade, if superblock is at a higher version than currently 1091 * supported: 1092 * 1093 * c->sb will be checked before we write the superblock, so update it as 1094 * well: 1095 */ 1096 if (BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb) > bcachefs_metadata_version_current) { 1097 SET_BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb, bcachefs_metadata_version_current); 1098 c->sb.version_upgrade_complete = bcachefs_metadata_version_current; 1099 } 1100 if (c->sb.version > bcachefs_metadata_version_current) { 1101 c->disk_sb.sb->version = cpu_to_le16(bcachefs_metadata_version_current); 1102 c->sb.version = bcachefs_metadata_version_current; 1103 } 1104 if (c->sb.version_min > bcachefs_metadata_version_current) { 1105 c->disk_sb.sb->version_min = cpu_to_le16(bcachefs_metadata_version_current); 1106 c->sb.version_min = bcachefs_metadata_version_current; 1107 } 1108 c->disk_sb.sb->compat[0] &= cpu_to_le64((1ULL << BCH_COMPAT_NR) - 1); 1109 return ret; 1110 } 1111 1112 void bch2_sb_upgrade(struct bch_fs *c, unsigned new_version) 1113 { 1114 lockdep_assert_held(&c->sb_lock); 1115 1116 if (BCH_VERSION_MAJOR(new_version) > 1117 BCH_VERSION_MAJOR(le16_to_cpu(c->disk_sb.sb->version))) 1118 bch2_sb_field_resize(&c->disk_sb, downgrade, 0); 1119 1120 c->disk_sb.sb->version = cpu_to_le16(new_version); 1121 c->disk_sb.sb->features[0] |= cpu_to_le64(BCH_SB_FEATURES_ALL); 1122 } 1123 1124 static int bch2_sb_ext_validate(struct bch_sb *sb, struct bch_sb_field *f, 1125 struct printbuf *err) 1126 { 1127 if (vstruct_bytes(f) < 88) { 1128 prt_printf(err, "field too small (%zu < %u)", vstruct_bytes(f), 88); 1129 return -BCH_ERR_invalid_sb_ext; 1130 } 1131 1132 return 0; 1133 } 1134 1135 static void bch2_sb_ext_to_text(struct printbuf *out, struct bch_sb *sb, 1136 struct bch_sb_field *f) 1137 { 1138 struct bch_sb_field_ext *e = field_to_type(f, ext); 1139 1140 prt_printf(out, "Recovery passes required:"); 1141 prt_tab(out); 1142 prt_bitflags(out, bch2_recovery_passes, 1143 bch2_recovery_passes_from_stable(le64_to_cpu(e->recovery_passes_required[0]))); 1144 prt_newline(out); 1145 1146 unsigned long *errors_silent = kmalloc(sizeof(e->errors_silent), GFP_KERNEL); 1147 if (errors_silent) { 1148 le_bitvector_to_cpu(errors_silent, (void *) e->errors_silent, sizeof(e->errors_silent) * 8); 1149 1150 prt_printf(out, "Errors to silently fix:"); 1151 prt_tab(out); 1152 prt_bitflags_vector(out, bch2_sb_error_strs, errors_silent, sizeof(e->errors_silent) * 8); 1153 prt_newline(out); 1154 1155 kfree(errors_silent); 1156 } 1157 } 1158 1159 static const struct bch_sb_field_ops bch_sb_field_ops_ext = { 1160 .validate = bch2_sb_ext_validate, 1161 .to_text = bch2_sb_ext_to_text, 1162 }; 1163 1164 static const struct bch_sb_field_ops *bch2_sb_field_ops[] = { 1165 #define x(f, nr) \ 1166 [BCH_SB_FIELD_##f] = &bch_sb_field_ops_##f, 1167 BCH_SB_FIELDS() 1168 #undef x 1169 }; 1170 1171 static const struct bch_sb_field_ops bch2_sb_field_null_ops; 1172 1173 static const struct bch_sb_field_ops *bch2_sb_field_type_ops(unsigned type) 1174 { 1175 return likely(type < ARRAY_SIZE(bch2_sb_field_ops)) 1176 ? bch2_sb_field_ops[type] 1177 : &bch2_sb_field_null_ops; 1178 } 1179 1180 static int bch2_sb_field_validate(struct bch_sb *sb, struct bch_sb_field *f, 1181 struct printbuf *err) 1182 { 1183 unsigned type = le32_to_cpu(f->type); 1184 struct printbuf field_err = PRINTBUF; 1185 const struct bch_sb_field_ops *ops = bch2_sb_field_type_ops(type); 1186 int ret; 1187 1188 ret = ops->validate ? ops->validate(sb, f, &field_err) : 0; 1189 if (ret) { 1190 prt_printf(err, "Invalid superblock section %s: %s", 1191 bch2_sb_fields[type], field_err.buf); 1192 prt_newline(err); 1193 bch2_sb_field_to_text(err, sb, f); 1194 } 1195 1196 printbuf_exit(&field_err); 1197 return ret; 1198 } 1199 1200 void __bch2_sb_field_to_text(struct printbuf *out, struct bch_sb *sb, 1201 struct bch_sb_field *f) 1202 { 1203 unsigned type = le32_to_cpu(f->type); 1204 const struct bch_sb_field_ops *ops = bch2_sb_field_type_ops(type); 1205 1206 if (!out->nr_tabstops) 1207 printbuf_tabstop_push(out, 32); 1208 1209 if (ops->to_text) 1210 ops->to_text(out, sb, f); 1211 } 1212 1213 void bch2_sb_field_to_text(struct printbuf *out, struct bch_sb *sb, 1214 struct bch_sb_field *f) 1215 { 1216 unsigned type = le32_to_cpu(f->type); 1217 1218 if (type < BCH_SB_FIELD_NR) 1219 prt_printf(out, "%s", bch2_sb_fields[type]); 1220 else 1221 prt_printf(out, "(unknown field %u)", type); 1222 1223 prt_printf(out, " (size %zu):", vstruct_bytes(f)); 1224 prt_newline(out); 1225 1226 __bch2_sb_field_to_text(out, sb, f); 1227 } 1228 1229 void bch2_sb_layout_to_text(struct printbuf *out, struct bch_sb_layout *l) 1230 { 1231 unsigned i; 1232 1233 prt_printf(out, "Type: %u", l->layout_type); 1234 prt_newline(out); 1235 1236 prt_str(out, "Superblock max size: "); 1237 prt_units_u64(out, 512 << l->sb_max_size_bits); 1238 prt_newline(out); 1239 1240 prt_printf(out, "Nr superblocks: %u", l->nr_superblocks); 1241 prt_newline(out); 1242 1243 prt_str(out, "Offsets: "); 1244 for (i = 0; i < l->nr_superblocks; i++) { 1245 if (i) 1246 prt_str(out, ", "); 1247 prt_printf(out, "%llu", le64_to_cpu(l->sb_offset[i])); 1248 } 1249 prt_newline(out); 1250 } 1251 1252 void bch2_sb_to_text(struct printbuf *out, struct bch_sb *sb, 1253 bool print_layout, unsigned fields) 1254 { 1255 u64 fields_have = 0; 1256 unsigned nr_devices = 0; 1257 1258 if (!out->nr_tabstops) 1259 printbuf_tabstop_push(out, 44); 1260 1261 for (int i = 0; i < sb->nr_devices; i++) 1262 nr_devices += bch2_dev_exists(sb, i); 1263 1264 prt_printf(out, "External UUID:"); 1265 prt_tab(out); 1266 pr_uuid(out, sb->user_uuid.b); 1267 prt_newline(out); 1268 1269 prt_printf(out, "Internal UUID:"); 1270 prt_tab(out); 1271 pr_uuid(out, sb->uuid.b); 1272 prt_newline(out); 1273 1274 prt_printf(out, "Magic number:"); 1275 prt_tab(out); 1276 pr_uuid(out, sb->magic.b); 1277 prt_newline(out); 1278 1279 prt_str(out, "Device index:"); 1280 prt_tab(out); 1281 prt_printf(out, "%u", sb->dev_idx); 1282 prt_newline(out); 1283 1284 prt_str(out, "Label:"); 1285 prt_tab(out); 1286 prt_printf(out, "%.*s", (int) sizeof(sb->label), sb->label); 1287 prt_newline(out); 1288 1289 prt_str(out, "Version:"); 1290 prt_tab(out); 1291 bch2_version_to_text(out, le16_to_cpu(sb->version)); 1292 prt_newline(out); 1293 1294 prt_str(out, "Version upgrade complete:"); 1295 prt_tab(out); 1296 bch2_version_to_text(out, BCH_SB_VERSION_UPGRADE_COMPLETE(sb)); 1297 prt_newline(out); 1298 1299 prt_printf(out, "Oldest version on disk:"); 1300 prt_tab(out); 1301 bch2_version_to_text(out, le16_to_cpu(sb->version_min)); 1302 prt_newline(out); 1303 1304 prt_printf(out, "Created:"); 1305 prt_tab(out); 1306 if (sb->time_base_lo) 1307 bch2_prt_datetime(out, div_u64(le64_to_cpu(sb->time_base_lo), NSEC_PER_SEC)); 1308 else 1309 prt_printf(out, "(not set)"); 1310 prt_newline(out); 1311 1312 prt_printf(out, "Sequence number:"); 1313 prt_tab(out); 1314 prt_printf(out, "%llu", le64_to_cpu(sb->seq)); 1315 prt_newline(out); 1316 1317 prt_printf(out, "Time of last write:"); 1318 prt_tab(out); 1319 bch2_prt_datetime(out, le64_to_cpu(sb->write_time)); 1320 prt_newline(out); 1321 1322 prt_printf(out, "Superblock size:"); 1323 prt_tab(out); 1324 prt_units_u64(out, vstruct_bytes(sb)); 1325 prt_str(out, "/"); 1326 prt_units_u64(out, 512ULL << sb->layout.sb_max_size_bits); 1327 prt_newline(out); 1328 1329 prt_printf(out, "Clean:"); 1330 prt_tab(out); 1331 prt_printf(out, "%llu", BCH_SB_CLEAN(sb)); 1332 prt_newline(out); 1333 1334 prt_printf(out, "Devices:"); 1335 prt_tab(out); 1336 prt_printf(out, "%u", nr_devices); 1337 prt_newline(out); 1338 1339 prt_printf(out, "Sections:"); 1340 vstruct_for_each(sb, f) 1341 fields_have |= 1 << le32_to_cpu(f->type); 1342 prt_tab(out); 1343 prt_bitflags(out, bch2_sb_fields, fields_have); 1344 prt_newline(out); 1345 1346 prt_printf(out, "Features:"); 1347 prt_tab(out); 1348 prt_bitflags(out, bch2_sb_features, le64_to_cpu(sb->features[0])); 1349 prt_newline(out); 1350 1351 prt_printf(out, "Compat features:"); 1352 prt_tab(out); 1353 prt_bitflags(out, bch2_sb_compat, le64_to_cpu(sb->compat[0])); 1354 prt_newline(out); 1355 1356 prt_newline(out); 1357 prt_printf(out, "Options:"); 1358 prt_newline(out); 1359 printbuf_indent_add(out, 2); 1360 { 1361 enum bch_opt_id id; 1362 1363 for (id = 0; id < bch2_opts_nr; id++) { 1364 const struct bch_option *opt = bch2_opt_table + id; 1365 1366 if (opt->get_sb != BCH2_NO_SB_OPT) { 1367 u64 v = bch2_opt_from_sb(sb, id); 1368 1369 prt_printf(out, "%s:", opt->attr.name); 1370 prt_tab(out); 1371 bch2_opt_to_text(out, NULL, sb, opt, v, 1372 OPT_HUMAN_READABLE|OPT_SHOW_FULL_LIST); 1373 prt_newline(out); 1374 } 1375 } 1376 } 1377 1378 printbuf_indent_sub(out, 2); 1379 1380 if (print_layout) { 1381 prt_newline(out); 1382 prt_printf(out, "layout:"); 1383 prt_newline(out); 1384 printbuf_indent_add(out, 2); 1385 bch2_sb_layout_to_text(out, &sb->layout); 1386 printbuf_indent_sub(out, 2); 1387 } 1388 1389 vstruct_for_each(sb, f) 1390 if (fields & (1 << le32_to_cpu(f->type))) { 1391 prt_newline(out); 1392 bch2_sb_field_to_text(out, sb, f); 1393 } 1394 } 1395