1419 lines · c
1// SPDX-License-Identifier: GPL-2.02 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_passes.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 27static const struct blk_holder_ops bch2_sb_handle_bdev_ops = {28};29 30struct bch2_metadata_version {31 u16 version;32 const char *name;33};34 35static 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 x42};43 44void 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 57unsigned 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 71const char * const bch2_sb_fields[] = {72#define x(name, nr) #name,73 BCH_SB_FIELDS()74#undef x75 NULL76};77 78static int bch2_sb_field_validate(struct bch_sb *, struct bch_sb_field *,79 enum bch_validate_flags, struct printbuf *);80 81struct 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 92static 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 131void 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 142void bch2_free_super(struct bch_sb_handle *sb)143{144 kfree(sb->bio);145 if (!IS_ERR_OR_NULL(sb->s_bdev_file))146 bdev_fput(sb->s_bdev_file);147 kfree(sb->holder);148 kfree(sb->sb_name);149 150 kfree(sb->sb);151 memset(sb, 0, sizeof(*sb));152}153 154int 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 213struct 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->io_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 248struct 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 261static 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 if (layout->sb_max_size_bits > BCH_SB_LAYOUT_SIZE_BITS_MAX) {291 prt_printf(out, "Invalid superblock layout: max_size_bits too high");292 return -BCH_ERR_invalid_sb_layout_sb_max_size_bits;293 }294 295 max_sectors = 1 << layout->sb_max_size_bits;296 297 prev_offset = le64_to_cpu(layout->sb_offset[0]);298 299 for (i = 1; i < layout->nr_superblocks; i++) {300 offset = le64_to_cpu(layout->sb_offset[i]);301 302 if (offset < prev_offset + max_sectors) {303 prt_printf(out, "Invalid superblock layout: superblocks overlap\n"304 " (sb %u ends at %llu next starts at %llu",305 i - 1, prev_offset + max_sectors, offset);306 return -BCH_ERR_invalid_sb_layout_superblocks_overlap;307 }308 prev_offset = offset;309 }310 311 return 0;312}313 314static int bch2_sb_compatible(struct bch_sb *sb, struct printbuf *out)315{316 u16 version = le16_to_cpu(sb->version);317 u16 version_min = le16_to_cpu(sb->version_min);318 319 if (!bch2_version_compatible(version)) {320 prt_str(out, "Unsupported superblock version ");321 bch2_version_to_text(out, version);322 prt_str(out, " (min ");323 bch2_version_to_text(out, bcachefs_metadata_version_min);324 prt_str(out, ", max ");325 bch2_version_to_text(out, bcachefs_metadata_version_current);326 prt_str(out, ")");327 return -BCH_ERR_invalid_sb_version;328 }329 330 if (!bch2_version_compatible(version_min)) {331 prt_str(out, "Unsupported superblock version_min ");332 bch2_version_to_text(out, version_min);333 prt_str(out, " (min ");334 bch2_version_to_text(out, bcachefs_metadata_version_min);335 prt_str(out, ", max ");336 bch2_version_to_text(out, bcachefs_metadata_version_current);337 prt_str(out, ")");338 return -BCH_ERR_invalid_sb_version;339 }340 341 if (version_min > version) {342 prt_str(out, "Bad minimum version ");343 bch2_version_to_text(out, version_min);344 prt_str(out, ", greater than version field ");345 bch2_version_to_text(out, version);346 return -BCH_ERR_invalid_sb_version;347 }348 349 return 0;350}351 352static int bch2_sb_validate(struct bch_sb_handle *disk_sb,353 enum bch_validate_flags flags, struct printbuf *out)354{355 struct bch_sb *sb = disk_sb->sb;356 struct bch_sb_field_members_v1 *mi;357 enum bch_opt_id opt_id;358 u16 block_size;359 int ret;360 361 ret = bch2_sb_compatible(sb, out);362 if (ret)363 return ret;364 365 if (sb->features[1] ||366 (le64_to_cpu(sb->features[0]) & (~0ULL << BCH_FEATURE_NR))) {367 prt_printf(out, "Filesystem has incompatible features");368 return -BCH_ERR_invalid_sb_features;369 }370 371 block_size = le16_to_cpu(sb->block_size);372 373 if (block_size > PAGE_SECTORS) {374 prt_printf(out, "Block size too big (got %u, max %u)",375 block_size, PAGE_SECTORS);376 return -BCH_ERR_invalid_sb_block_size;377 }378 379 if (bch2_is_zero(sb->user_uuid.b, sizeof(sb->user_uuid))) {380 prt_printf(out, "Bad user UUID (got zeroes)");381 return -BCH_ERR_invalid_sb_uuid;382 }383 384 if (bch2_is_zero(sb->uuid.b, sizeof(sb->uuid))) {385 prt_printf(out, "Bad internal UUID (got zeroes)");386 return -BCH_ERR_invalid_sb_uuid;387 }388 389 if (!sb->nr_devices ||390 sb->nr_devices > BCH_SB_MEMBERS_MAX) {391 prt_printf(out, "Bad number of member devices %u (max %u)",392 sb->nr_devices, BCH_SB_MEMBERS_MAX);393 return -BCH_ERR_invalid_sb_too_many_members;394 }395 396 if (sb->dev_idx >= sb->nr_devices) {397 prt_printf(out, "Bad dev_idx (got %u, nr_devices %u)",398 sb->dev_idx, sb->nr_devices);399 return -BCH_ERR_invalid_sb_dev_idx;400 }401 402 if (!sb->time_precision ||403 le32_to_cpu(sb->time_precision) > NSEC_PER_SEC) {404 prt_printf(out, "Invalid time precision: %u (min 1, max %lu)",405 le32_to_cpu(sb->time_precision), NSEC_PER_SEC);406 return -BCH_ERR_invalid_sb_time_precision;407 }408 409 if (!flags) {410 /*411 * Been seeing a bug where these are getting inexplicably412 * zeroed, so we're now validating them, but we have to be413 * careful not to preven people's filesystems from mounting:414 */415 if (!BCH_SB_JOURNAL_FLUSH_DELAY(sb))416 SET_BCH_SB_JOURNAL_FLUSH_DELAY(sb, 1000);417 if (!BCH_SB_JOURNAL_RECLAIM_DELAY(sb))418 SET_BCH_SB_JOURNAL_RECLAIM_DELAY(sb, 1000);419 420 if (!BCH_SB_VERSION_UPGRADE_COMPLETE(sb))421 SET_BCH_SB_VERSION_UPGRADE_COMPLETE(sb, le16_to_cpu(sb->version));422 423 if (le16_to_cpu(sb->version) <= bcachefs_metadata_version_disk_accounting_v2 &&424 !BCH_SB_ALLOCATOR_STUCK_TIMEOUT(sb))425 SET_BCH_SB_ALLOCATOR_STUCK_TIMEOUT(sb, 30);426 427 if (le16_to_cpu(sb->version) <= bcachefs_metadata_version_disk_accounting_v2)428 SET_BCH_SB_PROMOTE_WHOLE_EXTENTS(sb, true);429 }430 431 for (opt_id = 0; opt_id < bch2_opts_nr; opt_id++) {432 const struct bch_option *opt = bch2_opt_table + opt_id;433 434 if (opt->get_sb != BCH2_NO_SB_OPT) {435 u64 v = bch2_opt_from_sb(sb, opt_id);436 437 prt_printf(out, "Invalid option ");438 ret = bch2_opt_validate(opt, v, out);439 if (ret)440 return ret;441 442 printbuf_reset(out);443 }444 }445 446 /* validate layout */447 ret = validate_sb_layout(&sb->layout, out);448 if (ret)449 return ret;450 451 vstruct_for_each(sb, f) {452 if (!f->u64s) {453 prt_printf(out, "Invalid superblock: optional field with size 0 (type %u)",454 le32_to_cpu(f->type));455 return -BCH_ERR_invalid_sb_field_size;456 }457 458 if (vstruct_next(f) > vstruct_last(sb)) {459 prt_printf(out, "Invalid superblock: optional field extends past end of superblock (type %u)",460 le32_to_cpu(f->type));461 return -BCH_ERR_invalid_sb_field_size;462 }463 }464 465 /* members must be validated first: */466 mi = bch2_sb_field_get(sb, members_v1);467 if (!mi) {468 prt_printf(out, "Invalid superblock: member info area missing");469 return -BCH_ERR_invalid_sb_members_missing;470 }471 472 ret = bch2_sb_field_validate(sb, &mi->field, flags, out);473 if (ret)474 return ret;475 476 vstruct_for_each(sb, f) {477 if (le32_to_cpu(f->type) == BCH_SB_FIELD_members_v1)478 continue;479 480 ret = bch2_sb_field_validate(sb, f, flags, out);481 if (ret)482 return ret;483 }484 485 if ((flags & BCH_VALIDATE_write) &&486 bch2_sb_member_get(sb, sb->dev_idx).seq != sb->seq) {487 prt_printf(out, "Invalid superblock: member seq %llu != sb seq %llu",488 le64_to_cpu(bch2_sb_member_get(sb, sb->dev_idx).seq),489 le64_to_cpu(sb->seq));490 return -BCH_ERR_invalid_sb_members_missing;491 }492 493 return 0;494}495 496/* device open: */497 498static unsigned long le_ulong_to_cpu(unsigned long v)499{500 return sizeof(unsigned long) == 8501 ? le64_to_cpu(v)502 : le32_to_cpu(v);503}504 505static void le_bitvector_to_cpu(unsigned long *dst, unsigned long *src, unsigned nr)506{507 BUG_ON(nr & (BITS_PER_TYPE(long) - 1));508 509 for (unsigned i = 0; i < BITS_TO_LONGS(nr); i++)510 dst[i] = le_ulong_to_cpu(src[i]);511}512 513static void bch2_sb_update(struct bch_fs *c)514{515 struct bch_sb *src = c->disk_sb.sb;516 517 lockdep_assert_held(&c->sb_lock);518 519 c->sb.uuid = src->uuid;520 c->sb.user_uuid = src->user_uuid;521 c->sb.version = le16_to_cpu(src->version);522 c->sb.version_min = le16_to_cpu(src->version_min);523 c->sb.version_upgrade_complete = BCH_SB_VERSION_UPGRADE_COMPLETE(src);524 c->sb.nr_devices = src->nr_devices;525 c->sb.clean = BCH_SB_CLEAN(src);526 c->sb.encryption_type = BCH_SB_ENCRYPTION_TYPE(src);527 528 c->sb.nsec_per_time_unit = le32_to_cpu(src->time_precision);529 c->sb.time_units_per_sec = NSEC_PER_SEC / c->sb.nsec_per_time_unit;530 531 /* XXX this is wrong, we need a 96 or 128 bit integer type */532 c->sb.time_base_lo = div_u64(le64_to_cpu(src->time_base_lo),533 c->sb.nsec_per_time_unit);534 c->sb.time_base_hi = le32_to_cpu(src->time_base_hi);535 536 c->sb.features = le64_to_cpu(src->features[0]);537 c->sb.compat = le64_to_cpu(src->compat[0]);538 539 memset(c->sb.errors_silent, 0, sizeof(c->sb.errors_silent));540 541 struct bch_sb_field_ext *ext = bch2_sb_field_get(src, ext);542 if (ext) {543 le_bitvector_to_cpu(c->sb.errors_silent, (void *) ext->errors_silent,544 sizeof(c->sb.errors_silent) * 8);545 c->sb.btrees_lost_data = le64_to_cpu(ext->btrees_lost_data);546 }547 548 for_each_member_device(c, ca) {549 struct bch_member m = bch2_sb_member_get(src, ca->dev_idx);550 ca->mi = bch2_mi_to_cpu(&m);551 }552}553 554static int __copy_super(struct bch_sb_handle *dst_handle, struct bch_sb *src)555{556 struct bch_sb_field *src_f, *dst_f;557 struct bch_sb *dst = dst_handle->sb;558 unsigned i;559 560 dst->version = src->version;561 dst->version_min = src->version_min;562 dst->seq = src->seq;563 dst->uuid = src->uuid;564 dst->user_uuid = src->user_uuid;565 memcpy(dst->label, src->label, sizeof(dst->label));566 567 dst->block_size = src->block_size;568 dst->nr_devices = src->nr_devices;569 570 dst->time_base_lo = src->time_base_lo;571 dst->time_base_hi = src->time_base_hi;572 dst->time_precision = src->time_precision;573 dst->write_time = src->write_time;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 611int 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 628int 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 635static int read_one_super(struct bch_sb_handle *sb, u64 offset, struct printbuf *err)636{637 size_t bytes;638 int ret;639reread:640 bio_reset(sb->bio, sb->bdev, REQ_OP_READ|REQ_SYNC|REQ_META);641 sb->bio->bi_iter.bi_sector = offset;642 bch2_bio_map(sb->bio, sb->sb, sb->buffer_size);643 644 ret = submit_bio_wait(sb->bio);645 if (ret) {646 prt_printf(err, "IO error: %i", ret);647 return ret;648 }649 650 if (!uuid_equal(&sb->sb->magic, &BCACHE_MAGIC) &&651 !uuid_equal(&sb->sb->magic, &BCHFS_MAGIC)) {652 prt_str(err, "Not a bcachefs superblock (got magic ");653 pr_uuid(err, sb->sb->magic.b);654 prt_str(err, ")");655 return -BCH_ERR_invalid_sb_magic;656 }657 658 ret = bch2_sb_compatible(sb->sb, err);659 if (ret)660 return ret;661 662 bytes = vstruct_bytes(sb->sb);663 664 u64 sb_size = 512ULL << min(BCH_SB_LAYOUT_SIZE_BITS_MAX, sb->sb->layout.sb_max_size_bits);665 if (bytes > sb_size) {666 prt_printf(err, "Invalid superblock: too big (got %zu bytes, layout max %llu)",667 bytes, sb_size);668 return -BCH_ERR_invalid_sb_too_big;669 }670 671 if (bytes > sb->buffer_size) {672 ret = bch2_sb_realloc(sb, le32_to_cpu(sb->sb->u64s));673 if (ret)674 return ret;675 goto reread;676 }677 678 enum bch_csum_type csum_type = BCH_SB_CSUM_TYPE(sb->sb);679 if (csum_type >= BCH_CSUM_NR) {680 prt_printf(err, "unknown checksum type %llu", BCH_SB_CSUM_TYPE(sb->sb));681 return -BCH_ERR_invalid_sb_csum_type;682 }683 684 /* XXX: verify MACs */685 struct bch_csum csum = csum_vstruct(NULL, csum_type, null_nonce(), sb->sb);686 if (bch2_crc_cmp(csum, sb->sb->csum)) {687 bch2_csum_err_msg(err, csum_type, sb->sb->csum, csum);688 return -BCH_ERR_invalid_sb_csum;689 }690 691 sb->seq = le64_to_cpu(sb->sb->seq);692 693 return 0;694}695 696static int __bch2_read_super(const char *path, struct bch_opts *opts,697 struct bch_sb_handle *sb, bool ignore_notbchfs_msg)698{699 u64 offset = opt_get(*opts, sb);700 struct bch_sb_layout layout;701 struct printbuf err = PRINTBUF;702 struct printbuf err2 = PRINTBUF;703 __le64 *i;704 int ret;705#ifndef __KERNEL__706retry:707#endif708 memset(sb, 0, sizeof(*sb));709 sb->mode = BLK_OPEN_READ;710 sb->have_bio = true;711 sb->holder = kmalloc(1, GFP_KERNEL);712 if (!sb->holder)713 return -ENOMEM;714 715 sb->sb_name = kstrdup(path, GFP_KERNEL);716 if (!sb->sb_name) {717 ret = -ENOMEM;718 prt_printf(&err, "error allocating memory for sb_name");719 goto err;720 }721 722#ifndef __KERNEL__723 if (opt_get(*opts, direct_io) == false)724 sb->mode |= BLK_OPEN_BUFFERED;725#endif726 727 if (!opt_get(*opts, noexcl))728 sb->mode |= BLK_OPEN_EXCL;729 730 if (!opt_get(*opts, nochanges))731 sb->mode |= BLK_OPEN_WRITE;732 733 sb->s_bdev_file = bdev_file_open_by_path(path, sb->mode, sb->holder, &bch2_sb_handle_bdev_ops);734 if (IS_ERR(sb->s_bdev_file) &&735 PTR_ERR(sb->s_bdev_file) == -EACCES &&736 opt_get(*opts, read_only)) {737 sb->mode &= ~BLK_OPEN_WRITE;738 739 sb->s_bdev_file = bdev_file_open_by_path(path, sb->mode, sb->holder, &bch2_sb_handle_bdev_ops);740 if (!IS_ERR(sb->s_bdev_file))741 opt_set(*opts, nochanges, true);742 }743 744 if (IS_ERR(sb->s_bdev_file)) {745 ret = PTR_ERR(sb->s_bdev_file);746 prt_printf(&err, "error opening %s: %s", path, bch2_err_str(ret));747 goto err;748 }749 sb->bdev = file_bdev(sb->s_bdev_file);750 751 ret = bch2_sb_realloc(sb, 0);752 if (ret) {753 prt_printf(&err, "error allocating memory for superblock");754 goto err;755 }756 757 if (bch2_fs_init_fault("read_super")) {758 prt_printf(&err, "dynamic fault");759 ret = -EFAULT;760 goto err;761 }762 763 ret = read_one_super(sb, offset, &err);764 if (!ret)765 goto got_super;766 767 if (opt_defined(*opts, sb))768 goto err;769 770 prt_printf(&err2, "bcachefs (%s): error reading default superblock: %s\n",771 path, err.buf);772 if (ret == -BCH_ERR_invalid_sb_magic && ignore_notbchfs_msg)773 bch2_print_opts(opts, KERN_INFO "%s", err2.buf);774 else775 bch2_print_opts(opts, KERN_ERR "%s", err2.buf);776 777 printbuf_exit(&err2);778 printbuf_reset(&err);779 780 /*781 * Error reading primary superblock - read location of backup782 * superblocks:783 */784 bio_reset(sb->bio, sb->bdev, REQ_OP_READ|REQ_SYNC|REQ_META);785 sb->bio->bi_iter.bi_sector = BCH_SB_LAYOUT_SECTOR;786 /*787 * use sb buffer to read layout, since sb buffer is page aligned but788 * layout won't be:789 */790 bch2_bio_map(sb->bio, sb->sb, sizeof(struct bch_sb_layout));791 792 ret = submit_bio_wait(sb->bio);793 if (ret) {794 prt_printf(&err, "IO error: %i", ret);795 goto err;796 }797 798 memcpy(&layout, sb->sb, sizeof(layout));799 ret = validate_sb_layout(&layout, &err);800 if (ret)801 goto err;802 803 for (i = layout.sb_offset;804 i < layout.sb_offset + layout.nr_superblocks; i++) {805 offset = le64_to_cpu(*i);806 807 if (offset == opt_get(*opts, sb)) {808 ret = -BCH_ERR_invalid;809 continue;810 }811 812 ret = read_one_super(sb, offset, &err);813 if (!ret)814 goto got_super;815 }816 817 goto err;818 819got_super:820 if (le16_to_cpu(sb->sb->block_size) << 9 <821 bdev_logical_block_size(sb->bdev) &&822 opt_get(*opts, direct_io)) {823#ifndef __KERNEL__824 opt_set(*opts, direct_io, false);825 bch2_free_super(sb);826 goto retry;827#endif828 prt_printf(&err, "block size (%u) smaller than device block size (%u)",829 le16_to_cpu(sb->sb->block_size) << 9,830 bdev_logical_block_size(sb->bdev));831 ret = -BCH_ERR_block_size_too_small;832 goto err;833 }834 835 sb->have_layout = true;836 837 ret = bch2_sb_validate(sb, 0, &err);838 if (ret) {839 bch2_print_opts(opts, KERN_ERR "bcachefs (%s): error validating superblock: %s\n",840 path, err.buf);841 goto err_no_print;842 }843out:844 printbuf_exit(&err);845 return ret;846err:847 bch2_print_opts(opts, KERN_ERR "bcachefs (%s): error reading superblock: %s\n",848 path, err.buf);849err_no_print:850 bch2_free_super(sb);851 goto out;852}853 854int bch2_read_super(const char *path, struct bch_opts *opts,855 struct bch_sb_handle *sb)856{857 return __bch2_read_super(path, opts, sb, false);858}859 860/* provide a silenced version for mount.bcachefs */861 862int bch2_read_super_silent(const char *path, struct bch_opts *opts,863 struct bch_sb_handle *sb)864{865 return __bch2_read_super(path, opts, sb, true);866}867 868/* write superblock: */869 870static void write_super_endio(struct bio *bio)871{872 struct bch_dev *ca = bio->bi_private;873 874 /* XXX: return errors directly */875 876 if (bch2_dev_io_err_on(bio->bi_status, ca,877 bio_data_dir(bio)878 ? BCH_MEMBER_ERROR_write879 : BCH_MEMBER_ERROR_read,880 "superblock %s error: %s",881 bio_data_dir(bio) ? "write" : "read",882 bch2_blk_status_to_str(bio->bi_status)))883 ca->sb_write_error = 1;884 885 closure_put(&ca->fs->sb_write);886 percpu_ref_put(&ca->io_ref);887}888 889static void read_back_super(struct bch_fs *c, struct bch_dev *ca)890{891 struct bch_sb *sb = ca->disk_sb.sb;892 struct bio *bio = ca->disk_sb.bio;893 894 bio_reset(bio, ca->disk_sb.bdev, REQ_OP_READ|REQ_SYNC|REQ_META);895 bio->bi_iter.bi_sector = le64_to_cpu(sb->layout.sb_offset[0]);896 bio->bi_end_io = write_super_endio;897 bio->bi_private = ca;898 bch2_bio_map(bio, ca->sb_read_scratch, PAGE_SIZE);899 900 this_cpu_add(ca->io_done->sectors[READ][BCH_DATA_sb],901 bio_sectors(bio));902 903 percpu_ref_get(&ca->io_ref);904 closure_bio_submit(bio, &c->sb_write);905}906 907static void write_one_super(struct bch_fs *c, struct bch_dev *ca, unsigned idx)908{909 struct bch_sb *sb = ca->disk_sb.sb;910 struct bio *bio = ca->disk_sb.bio;911 912 sb->offset = sb->layout.sb_offset[idx];913 914 SET_BCH_SB_CSUM_TYPE(sb, bch2_csum_opt_to_type(c->opts.metadata_checksum, false));915 sb->csum = csum_vstruct(c, BCH_SB_CSUM_TYPE(sb),916 null_nonce(), sb);917 918 bio_reset(bio, ca->disk_sb.bdev, REQ_OP_WRITE|REQ_SYNC|REQ_META);919 bio->bi_iter.bi_sector = le64_to_cpu(sb->offset);920 bio->bi_end_io = write_super_endio;921 bio->bi_private = ca;922 bch2_bio_map(bio, sb,923 roundup((size_t) vstruct_bytes(sb),924 bdev_logical_block_size(ca->disk_sb.bdev)));925 926 this_cpu_add(ca->io_done->sectors[WRITE][BCH_DATA_sb],927 bio_sectors(bio));928 929 percpu_ref_get(&ca->io_ref);930 closure_bio_submit(bio, &c->sb_write);931}932 933int bch2_write_super(struct bch_fs *c)934{935 struct closure *cl = &c->sb_write;936 struct printbuf err = PRINTBUF;937 unsigned sb = 0, nr_wrote;938 struct bch_devs_mask sb_written;939 bool wrote, can_mount_without_written, can_mount_with_written;940 unsigned degraded_flags = BCH_FORCE_IF_DEGRADED;941 DARRAY(struct bch_dev *) online_devices = {};942 int ret = 0;943 944 trace_and_count(c, write_super, c, _RET_IP_);945 946 if (c->opts.very_degraded)947 degraded_flags |= BCH_FORCE_IF_LOST;948 949 lockdep_assert_held(&c->sb_lock);950 951 closure_init_stack(cl);952 memset(&sb_written, 0, sizeof(sb_written));953 954 for_each_online_member(c, ca) {955 ret = darray_push(&online_devices, ca);956 if (bch2_fs_fatal_err_on(ret, c, "%s: error allocating online devices", __func__)) {957 percpu_ref_put(&ca->io_ref);958 goto out;959 }960 percpu_ref_get(&ca->io_ref);961 }962 963 /* Make sure we're using the new magic numbers: */964 c->disk_sb.sb->magic = BCHFS_MAGIC;965 c->disk_sb.sb->layout.magic = BCHFS_MAGIC;966 967 le64_add_cpu(&c->disk_sb.sb->seq, 1);968 969 struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2);970 darray_for_each(online_devices, ca)971 __bch2_members_v2_get_mut(mi, (*ca)->dev_idx)->seq = c->disk_sb.sb->seq;972 c->disk_sb.sb->write_time = cpu_to_le64(ktime_get_real_seconds());973 974 if (test_bit(BCH_FS_error, &c->flags))975 SET_BCH_SB_HAS_ERRORS(c->disk_sb.sb, 1);976 if (test_bit(BCH_FS_topology_error, &c->flags))977 SET_BCH_SB_HAS_TOPOLOGY_ERRORS(c->disk_sb.sb, 1);978 979 SET_BCH_SB_BIG_ENDIAN(c->disk_sb.sb, CPU_BIG_ENDIAN);980 981 bch2_sb_counters_from_cpu(c);982 bch2_sb_members_from_cpu(c);983 bch2_sb_members_cpy_v2_v1(&c->disk_sb);984 bch2_sb_errors_from_cpu(c);985 bch2_sb_downgrade_update(c);986 987 darray_for_each(online_devices, ca)988 bch2_sb_from_fs(c, (*ca));989 990 darray_for_each(online_devices, ca) {991 printbuf_reset(&err);992 993 ret = bch2_sb_validate(&(*ca)->disk_sb, BCH_VALIDATE_write, &err);994 if (ret) {995 bch2_fs_inconsistent(c, "sb invalid before write: %s", err.buf);996 goto out;997 }998 }999 1000 if (c->opts.nochanges)1001 goto out;1002 1003 /*1004 * Defer writing the superblock until filesystem initialization is1005 * complete - don't write out a partly initialized superblock:1006 */1007 if (!BCH_SB_INITIALIZED(c->disk_sb.sb))1008 goto out;1009 1010 if (le16_to_cpu(c->disk_sb.sb->version) > bcachefs_metadata_version_current) {1011 struct printbuf buf = PRINTBUF;1012 prt_printf(&buf, "attempting to write superblock that wasn't version downgraded (");1013 bch2_version_to_text(&buf, le16_to_cpu(c->disk_sb.sb->version));1014 prt_str(&buf, " > ");1015 bch2_version_to_text(&buf, bcachefs_metadata_version_current);1016 prt_str(&buf, ")");1017 bch2_fs_fatal_error(c, ": %s", buf.buf);1018 printbuf_exit(&buf);1019 return -BCH_ERR_sb_not_downgraded;1020 }1021 1022 darray_for_each(online_devices, ca) {1023 __set_bit((*ca)->dev_idx, sb_written.d);1024 (*ca)->sb_write_error = 0;1025 }1026 1027 darray_for_each(online_devices, ca)1028 read_back_super(c, *ca);1029 closure_sync(cl);1030 1031 darray_for_each(online_devices, cap) {1032 struct bch_dev *ca = *cap;1033 1034 if (ca->sb_write_error)1035 continue;1036 1037 if (le64_to_cpu(ca->sb_read_scratch->seq) < ca->disk_sb.seq) {1038 struct printbuf buf = PRINTBUF;1039 prt_char(&buf, ' ');1040 prt_bdevname(&buf, ca->disk_sb.bdev);1041 prt_printf(&buf,1042 ": Superblock write was silently dropped! (seq %llu expected %llu)",1043 le64_to_cpu(ca->sb_read_scratch->seq),1044 ca->disk_sb.seq);1045 bch2_fs_fatal_error(c, "%s", buf.buf);1046 printbuf_exit(&buf);1047 ret = -BCH_ERR_erofs_sb_err;1048 }1049 1050 if (le64_to_cpu(ca->sb_read_scratch->seq) > ca->disk_sb.seq) {1051 struct printbuf buf = PRINTBUF;1052 prt_char(&buf, ' ');1053 prt_bdevname(&buf, ca->disk_sb.bdev);1054 prt_printf(&buf,1055 ": Superblock modified by another process (seq %llu expected %llu)",1056 le64_to_cpu(ca->sb_read_scratch->seq),1057 ca->disk_sb.seq);1058 bch2_fs_fatal_error(c, "%s", buf.buf);1059 printbuf_exit(&buf);1060 ret = -BCH_ERR_erofs_sb_err;1061 }1062 }1063 1064 if (ret)1065 goto out;1066 1067 do {1068 wrote = false;1069 darray_for_each(online_devices, cap) {1070 struct bch_dev *ca = *cap;1071 if (!ca->sb_write_error &&1072 sb < ca->disk_sb.sb->layout.nr_superblocks) {1073 write_one_super(c, ca, sb);1074 wrote = true;1075 }1076 }1077 closure_sync(cl);1078 sb++;1079 } while (wrote);1080 1081 darray_for_each(online_devices, cap) {1082 struct bch_dev *ca = *cap;1083 if (ca->sb_write_error)1084 __clear_bit(ca->dev_idx, sb_written.d);1085 else1086 ca->disk_sb.seq = le64_to_cpu(ca->disk_sb.sb->seq);1087 }1088 1089 nr_wrote = dev_mask_nr(&sb_written);1090 1091 can_mount_with_written =1092 bch2_have_enough_devs(c, sb_written, degraded_flags, false);1093 1094 for (unsigned i = 0; i < ARRAY_SIZE(sb_written.d); i++)1095 sb_written.d[i] = ~sb_written.d[i];1096 1097 can_mount_without_written =1098 bch2_have_enough_devs(c, sb_written, degraded_flags, false);1099 1100 /*1101 * If we would be able to mount _without_ the devices we successfully1102 * wrote superblocks to, we weren't able to write to enough devices:1103 *1104 * Exception: if we can mount without the successes because we haven't1105 * written anything (new filesystem), we continue if we'd be able to1106 * mount with the devices we did successfully write to:1107 */1108 if (bch2_fs_fatal_err_on(!nr_wrote ||1109 !can_mount_with_written ||1110 (can_mount_without_written &&1111 !can_mount_with_written), c,1112 ": Unable to write superblock to sufficient devices (from %ps)",1113 (void *) _RET_IP_))1114 ret = -1;1115out:1116 /* Make new options visible after they're persistent: */1117 bch2_sb_update(c);1118 darray_for_each(online_devices, ca)1119 percpu_ref_put(&(*ca)->io_ref);1120 darray_exit(&online_devices);1121 printbuf_exit(&err);1122 return ret;1123}1124 1125void __bch2_check_set_feature(struct bch_fs *c, unsigned feat)1126{1127 mutex_lock(&c->sb_lock);1128 if (!(c->sb.features & (1ULL << feat))) {1129 c->disk_sb.sb->features[0] |= cpu_to_le64(1ULL << feat);1130 1131 bch2_write_super(c);1132 }1133 mutex_unlock(&c->sb_lock);1134}1135 1136/* Downgrade if superblock is at a higher version than currently supported: */1137bool bch2_check_version_downgrade(struct bch_fs *c)1138{1139 bool ret = bcachefs_metadata_version_current < c->sb.version;1140 1141 lockdep_assert_held(&c->sb_lock);1142 1143 /*1144 * Downgrade, if superblock is at a higher version than currently1145 * supported:1146 *1147 * c->sb will be checked before we write the superblock, so update it as1148 * well:1149 */1150 if (BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb) > bcachefs_metadata_version_current)1151 SET_BCH_SB_VERSION_UPGRADE_COMPLETE(c->disk_sb.sb, bcachefs_metadata_version_current);1152 if (c->sb.version > bcachefs_metadata_version_current)1153 c->disk_sb.sb->version = cpu_to_le16(bcachefs_metadata_version_current);1154 if (c->sb.version_min > bcachefs_metadata_version_current)1155 c->disk_sb.sb->version_min = cpu_to_le16(bcachefs_metadata_version_current);1156 c->disk_sb.sb->compat[0] &= cpu_to_le64((1ULL << BCH_COMPAT_NR) - 1);1157 return ret;1158}1159 1160void bch2_sb_upgrade(struct bch_fs *c, unsigned new_version)1161{1162 lockdep_assert_held(&c->sb_lock);1163 1164 if (BCH_VERSION_MAJOR(new_version) >1165 BCH_VERSION_MAJOR(le16_to_cpu(c->disk_sb.sb->version)))1166 bch2_sb_field_resize(&c->disk_sb, downgrade, 0);1167 1168 c->disk_sb.sb->version = cpu_to_le16(new_version);1169 c->disk_sb.sb->features[0] |= cpu_to_le64(BCH_SB_FEATURES_ALL);1170}1171 1172static int bch2_sb_ext_validate(struct bch_sb *sb, struct bch_sb_field *f,1173 enum bch_validate_flags flags, struct printbuf *err)1174{1175 if (vstruct_bytes(f) < 88) {1176 prt_printf(err, "field too small (%zu < %u)", vstruct_bytes(f), 88);1177 return -BCH_ERR_invalid_sb_ext;1178 }1179 1180 return 0;1181}1182 1183static void bch2_sb_ext_to_text(struct printbuf *out, struct bch_sb *sb,1184 struct bch_sb_field *f)1185{1186 struct bch_sb_field_ext *e = field_to_type(f, ext);1187 1188 prt_printf(out, "Recovery passes required:\t");1189 prt_bitflags(out, bch2_recovery_passes,1190 bch2_recovery_passes_from_stable(le64_to_cpu(e->recovery_passes_required[0])));1191 prt_newline(out);1192 1193 unsigned long *errors_silent = kmalloc(sizeof(e->errors_silent), GFP_KERNEL);1194 if (errors_silent) {1195 le_bitvector_to_cpu(errors_silent, (void *) e->errors_silent, sizeof(e->errors_silent) * 8);1196 1197 prt_printf(out, "Errors to silently fix:\t");1198 prt_bitflags_vector(out, bch2_sb_error_strs, errors_silent,1199 min(BCH_FSCK_ERR_MAX, sizeof(e->errors_silent) * 8));1200 prt_newline(out);1201 1202 kfree(errors_silent);1203 }1204 1205 prt_printf(out, "Btrees with missing data:\t");1206 prt_bitflags(out, __bch2_btree_ids, le64_to_cpu(e->btrees_lost_data));1207 prt_newline(out);1208}1209 1210static const struct bch_sb_field_ops bch_sb_field_ops_ext = {1211 .validate = bch2_sb_ext_validate,1212 .to_text = bch2_sb_ext_to_text,1213};1214 1215static const struct bch_sb_field_ops *bch2_sb_field_ops[] = {1216#define x(f, nr) \1217 [BCH_SB_FIELD_##f] = &bch_sb_field_ops_##f,1218 BCH_SB_FIELDS()1219#undef x1220};1221 1222static const struct bch_sb_field_ops bch2_sb_field_null_ops;1223 1224static const struct bch_sb_field_ops *bch2_sb_field_type_ops(unsigned type)1225{1226 return likely(type < ARRAY_SIZE(bch2_sb_field_ops))1227 ? bch2_sb_field_ops[type]1228 : &bch2_sb_field_null_ops;1229}1230 1231static int bch2_sb_field_validate(struct bch_sb *sb, struct bch_sb_field *f,1232 enum bch_validate_flags flags, struct printbuf *err)1233{1234 unsigned type = le32_to_cpu(f->type);1235 struct printbuf field_err = PRINTBUF;1236 const struct bch_sb_field_ops *ops = bch2_sb_field_type_ops(type);1237 int ret;1238 1239 ret = ops->validate ? ops->validate(sb, f, flags, &field_err) : 0;1240 if (ret) {1241 prt_printf(err, "Invalid superblock section %s: %s",1242 bch2_sb_fields[type], field_err.buf);1243 prt_newline(err);1244 bch2_sb_field_to_text(err, sb, f);1245 }1246 1247 printbuf_exit(&field_err);1248 return ret;1249}1250 1251void __bch2_sb_field_to_text(struct printbuf *out, struct bch_sb *sb,1252 struct bch_sb_field *f)1253{1254 unsigned type = le32_to_cpu(f->type);1255 const struct bch_sb_field_ops *ops = bch2_sb_field_type_ops(type);1256 1257 if (!out->nr_tabstops)1258 printbuf_tabstop_push(out, 32);1259 1260 if (ops->to_text)1261 ops->to_text(out, sb, f);1262}1263 1264void bch2_sb_field_to_text(struct printbuf *out, struct bch_sb *sb,1265 struct bch_sb_field *f)1266{1267 unsigned type = le32_to_cpu(f->type);1268 1269 if (type < BCH_SB_FIELD_NR)1270 prt_printf(out, "%s", bch2_sb_fields[type]);1271 else1272 prt_printf(out, "(unknown field %u)", type);1273 1274 prt_printf(out, " (size %zu):", vstruct_bytes(f));1275 prt_newline(out);1276 1277 __bch2_sb_field_to_text(out, sb, f);1278}1279 1280void bch2_sb_layout_to_text(struct printbuf *out, struct bch_sb_layout *l)1281{1282 unsigned i;1283 1284 prt_printf(out, "Type: %u", l->layout_type);1285 prt_newline(out);1286 1287 prt_str(out, "Superblock max size: ");1288 prt_units_u64(out, 512 << l->sb_max_size_bits);1289 prt_newline(out);1290 1291 prt_printf(out, "Nr superblocks: %u", l->nr_superblocks);1292 prt_newline(out);1293 1294 prt_str(out, "Offsets: ");1295 for (i = 0; i < l->nr_superblocks; i++) {1296 if (i)1297 prt_str(out, ", ");1298 prt_printf(out, "%llu", le64_to_cpu(l->sb_offset[i]));1299 }1300 prt_newline(out);1301}1302 1303void bch2_sb_to_text(struct printbuf *out, struct bch_sb *sb,1304 bool print_layout, unsigned fields)1305{1306 if (!out->nr_tabstops)1307 printbuf_tabstop_push(out, 44);1308 1309 prt_printf(out, "External UUID:\t");1310 pr_uuid(out, sb->user_uuid.b);1311 prt_newline(out);1312 1313 prt_printf(out, "Internal UUID:\t");1314 pr_uuid(out, sb->uuid.b);1315 prt_newline(out);1316 1317 prt_printf(out, "Magic number:\t");1318 pr_uuid(out, sb->magic.b);1319 prt_newline(out);1320 1321 prt_printf(out, "Device index:\t%u\n", sb->dev_idx);1322 1323 prt_printf(out, "Label:\t");1324 if (!strlen(sb->label))1325 prt_printf(out, "(none)");1326 else1327 prt_printf(out, "%.*s", (int) sizeof(sb->label), sb->label);1328 prt_newline(out);1329 1330 prt_printf(out, "Version:\t");1331 bch2_version_to_text(out, le16_to_cpu(sb->version));1332 prt_newline(out);1333 1334 prt_printf(out, "Version upgrade complete:\t");1335 bch2_version_to_text(out, BCH_SB_VERSION_UPGRADE_COMPLETE(sb));1336 prt_newline(out);1337 1338 prt_printf(out, "Oldest version on disk:\t");1339 bch2_version_to_text(out, le16_to_cpu(sb->version_min));1340 prt_newline(out);1341 1342 prt_printf(out, "Created:\t");1343 if (sb->time_base_lo)1344 bch2_prt_datetime(out, div_u64(le64_to_cpu(sb->time_base_lo), NSEC_PER_SEC));1345 else1346 prt_printf(out, "(not set)");1347 prt_newline(out);1348 1349 prt_printf(out, "Sequence number:\t");1350 prt_printf(out, "%llu", le64_to_cpu(sb->seq));1351 prt_newline(out);1352 1353 prt_printf(out, "Time of last write:\t");1354 bch2_prt_datetime(out, le64_to_cpu(sb->write_time));1355 prt_newline(out);1356 1357 prt_printf(out, "Superblock size:\t");1358 prt_units_u64(out, vstruct_bytes(sb));1359 prt_str(out, "/");1360 prt_units_u64(out, 512ULL << sb->layout.sb_max_size_bits);1361 prt_newline(out);1362 1363 prt_printf(out, "Clean:\t%llu\n", BCH_SB_CLEAN(sb));1364 prt_printf(out, "Devices:\t%u\n", bch2_sb_nr_devices(sb));1365 1366 prt_printf(out, "Sections:\t");1367 u64 fields_have = 0;1368 vstruct_for_each(sb, f)1369 fields_have |= 1 << le32_to_cpu(f->type);1370 prt_bitflags(out, bch2_sb_fields, fields_have);1371 prt_newline(out);1372 1373 prt_printf(out, "Features:\t");1374 prt_bitflags(out, bch2_sb_features, le64_to_cpu(sb->features[0]));1375 prt_newline(out);1376 1377 prt_printf(out, "Compat features:\t");1378 prt_bitflags(out, bch2_sb_compat, le64_to_cpu(sb->compat[0]));1379 prt_newline(out);1380 1381 prt_newline(out);1382 prt_printf(out, "Options:");1383 prt_newline(out);1384 printbuf_indent_add(out, 2);1385 {1386 enum bch_opt_id id;1387 1388 for (id = 0; id < bch2_opts_nr; id++) {1389 const struct bch_option *opt = bch2_opt_table + id;1390 1391 if (opt->get_sb != BCH2_NO_SB_OPT) {1392 u64 v = bch2_opt_from_sb(sb, id);1393 1394 prt_printf(out, "%s:\t", opt->attr.name);1395 bch2_opt_to_text(out, NULL, sb, opt, v,1396 OPT_HUMAN_READABLE|OPT_SHOW_FULL_LIST);1397 prt_newline(out);1398 }1399 }1400 }1401 1402 printbuf_indent_sub(out, 2);1403 1404 if (print_layout) {1405 prt_newline(out);1406 prt_printf(out, "layout:");1407 prt_newline(out);1408 printbuf_indent_add(out, 2);1409 bch2_sb_layout_to_text(out, &sb->layout);1410 printbuf_indent_sub(out, 2);1411 }1412 1413 vstruct_for_each(sb, f)1414 if (fields & (1 << le32_to_cpu(f->type))) {1415 prt_newline(out);1416 bch2_sb_field_to_text(out, sb, f);1417 }1418}1419