diff options
Diffstat (limited to 'fs/bcachefs/sb-members.c')
| -rw-r--r-- | fs/bcachefs/sb-members.c | 466 |
1 files changed, 0 insertions, 466 deletions
diff --git a/fs/bcachefs/sb-members.c b/fs/bcachefs/sb-members.c deleted file mode 100644 index 39196f2a4197..000000000000 --- a/fs/bcachefs/sb-members.c +++ /dev/null @@ -1,466 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 - -#include "bcachefs.h" -#include "btree_cache.h" -#include "disk_groups.h" -#include "error.h" -#include "opts.h" -#include "replicas.h" -#include "sb-members.h" -#include "super-io.h" - -void bch2_dev_missing(struct bch_fs *c, unsigned dev) -{ - bch2_fs_inconsistent(c, "pointer to nonexistent device %u", dev); -} - -void bch2_dev_bucket_missing(struct bch_fs *c, struct bpos bucket) -{ - bch2_fs_inconsistent(c, "pointer to nonexistent bucket %llu:%llu", bucket.inode, bucket.offset); -} - -#define x(t, n, ...) [n] = #t, -static const char * const bch2_iops_measurements[] = { - BCH_IOPS_MEASUREMENTS() - NULL -}; - -char * const bch2_member_error_strs[] = { - BCH_MEMBER_ERROR_TYPES() - NULL -}; -#undef x - -/* Code for bch_sb_field_members_v1: */ - -struct bch_member *bch2_members_v2_get_mut(struct bch_sb *sb, int i) -{ - return __bch2_members_v2_get_mut(bch2_sb_field_get(sb, members_v2), i); -} - -static struct bch_member members_v2_get(struct bch_sb_field_members_v2 *mi, int i) -{ - struct bch_member ret, *p = __bch2_members_v2_get_mut(mi, i); - memset(&ret, 0, sizeof(ret)); - memcpy(&ret, p, min_t(size_t, le16_to_cpu(mi->member_bytes), sizeof(ret))); - return ret; -} - -static struct bch_member *members_v1_get_mut(struct bch_sb_field_members_v1 *mi, int i) -{ - return (void *) mi->_members + (i * BCH_MEMBER_V1_BYTES); -} - -static struct bch_member members_v1_get(struct bch_sb_field_members_v1 *mi, int i) -{ - struct bch_member ret, *p = members_v1_get_mut(mi, i); - memset(&ret, 0, sizeof(ret)); - memcpy(&ret, p, min_t(size_t, BCH_MEMBER_V1_BYTES, sizeof(ret))); - return ret; -} - -struct bch_member bch2_sb_member_get(struct bch_sb *sb, int i) -{ - struct bch_sb_field_members_v2 *mi2 = bch2_sb_field_get(sb, members_v2); - if (mi2) - return members_v2_get(mi2, i); - struct bch_sb_field_members_v1 *mi1 = bch2_sb_field_get(sb, members_v1); - return members_v1_get(mi1, i); -} - -static int sb_members_v2_resize_entries(struct bch_fs *c) -{ - struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2); - - if (le16_to_cpu(mi->member_bytes) < sizeof(struct bch_member)) { - unsigned u64s = DIV_ROUND_UP((sizeof(*mi) + sizeof(mi->_members[0]) * - c->disk_sb.sb->nr_devices), 8); - - mi = bch2_sb_field_resize(&c->disk_sb, members_v2, u64s); - if (!mi) - return -BCH_ERR_ENOSPC_sb_members_v2; - - for (int i = c->disk_sb.sb->nr_devices - 1; i >= 0; --i) { - void *dst = (void *) mi->_members + (i * sizeof(struct bch_member)); - memmove(dst, __bch2_members_v2_get_mut(mi, i), le16_to_cpu(mi->member_bytes)); - memset(dst + le16_to_cpu(mi->member_bytes), - 0, (sizeof(struct bch_member) - le16_to_cpu(mi->member_bytes))); - } - mi->member_bytes = cpu_to_le16(sizeof(struct bch_member)); - } - return 0; -} - -int bch2_sb_members_v2_init(struct bch_fs *c) -{ - struct bch_sb_field_members_v1 *mi1; - struct bch_sb_field_members_v2 *mi2; - - if (!bch2_sb_field_get(c->disk_sb.sb, members_v2)) { - mi2 = bch2_sb_field_resize(&c->disk_sb, members_v2, - DIV_ROUND_UP(sizeof(*mi2) + - sizeof(struct bch_member) * c->sb.nr_devices, - sizeof(u64))); - mi1 = bch2_sb_field_get(c->disk_sb.sb, members_v1); - memcpy(&mi2->_members[0], &mi1->_members[0], - BCH_MEMBER_V1_BYTES * c->sb.nr_devices); - memset(&mi2->pad[0], 0, sizeof(mi2->pad)); - mi2->member_bytes = cpu_to_le16(BCH_MEMBER_V1_BYTES); - } - - return sb_members_v2_resize_entries(c); -} - -int bch2_sb_members_cpy_v2_v1(struct bch_sb_handle *disk_sb) -{ - struct bch_sb_field_members_v1 *mi1; - struct bch_sb_field_members_v2 *mi2; - - mi1 = bch2_sb_field_resize(disk_sb, members_v1, - DIV_ROUND_UP(sizeof(*mi1) + BCH_MEMBER_V1_BYTES * - disk_sb->sb->nr_devices, sizeof(u64))); - if (!mi1) - return -BCH_ERR_ENOSPC_sb_members; - - mi2 = bch2_sb_field_get(disk_sb->sb, members_v2); - - for (unsigned i = 0; i < disk_sb->sb->nr_devices; i++) - memcpy(members_v1_get_mut(mi1, i), __bch2_members_v2_get_mut(mi2, i), BCH_MEMBER_V1_BYTES); - - return 0; -} - -static int validate_member(struct printbuf *err, - struct bch_member m, - struct bch_sb *sb, - int i) -{ - if (le64_to_cpu(m.nbuckets) > BCH_MEMBER_NBUCKETS_MAX) { - prt_printf(err, "device %u: too many buckets (got %llu, max %u)", - i, le64_to_cpu(m.nbuckets), BCH_MEMBER_NBUCKETS_MAX); - return -BCH_ERR_invalid_sb_members; - } - - if (le64_to_cpu(m.nbuckets) - - le16_to_cpu(m.first_bucket) < BCH_MIN_NR_NBUCKETS) { - prt_printf(err, "device %u: not enough buckets (got %llu, max %u)", - i, le64_to_cpu(m.nbuckets), BCH_MIN_NR_NBUCKETS); - return -BCH_ERR_invalid_sb_members; - } - - if (le16_to_cpu(m.bucket_size) < - le16_to_cpu(sb->block_size)) { - prt_printf(err, "device %u: bucket size %u smaller than block size %u", - i, le16_to_cpu(m.bucket_size), le16_to_cpu(sb->block_size)); - return -BCH_ERR_invalid_sb_members; - } - - if (le16_to_cpu(m.bucket_size) < - BCH_SB_BTREE_NODE_SIZE(sb)) { - prt_printf(err, "device %u: bucket size %u smaller than btree node size %llu", - i, le16_to_cpu(m.bucket_size), BCH_SB_BTREE_NODE_SIZE(sb)); - return -BCH_ERR_invalid_sb_members; - } - - return 0; -} - -static void member_to_text(struct printbuf *out, - struct bch_member m, - struct bch_sb_field_disk_groups *gi, - struct bch_sb *sb, - int i) -{ - unsigned data_have = bch2_sb_dev_has_data(sb, i); - u64 bucket_size = le16_to_cpu(m.bucket_size); - u64 device_size = le64_to_cpu(m.nbuckets) * bucket_size; - - if (!bch2_member_alive(&m)) - return; - - prt_printf(out, "Device:\t%u\n", i); - - printbuf_indent_add(out, 2); - - prt_printf(out, "Label:\t"); - if (BCH_MEMBER_GROUP(&m)) { - unsigned idx = BCH_MEMBER_GROUP(&m) - 1; - - if (idx < disk_groups_nr(gi)) - prt_printf(out, "%s (%u)", - gi->entries[idx].label, idx); - else - prt_printf(out, "(bad disk labels section)"); - } else { - prt_printf(out, "(none)"); - } - prt_newline(out); - - prt_printf(out, "UUID:\t"); - pr_uuid(out, m.uuid.b); - prt_newline(out); - - prt_printf(out, "Size:\t"); - prt_units_u64(out, device_size << 9); - prt_newline(out); - - for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) - prt_printf(out, "%s errors:\t%llu\n", bch2_member_error_strs[i], le64_to_cpu(m.errors[i])); - - for (unsigned i = 0; i < BCH_IOPS_NR; i++) - prt_printf(out, "%s iops:\t%u\n", bch2_iops_measurements[i], le32_to_cpu(m.iops[i])); - - prt_printf(out, "Bucket size:\t"); - prt_units_u64(out, bucket_size << 9); - prt_newline(out); - - prt_printf(out, "First bucket:\t%u\n", le16_to_cpu(m.first_bucket)); - prt_printf(out, "Buckets:\t%llu\n", le64_to_cpu(m.nbuckets)); - - prt_printf(out, "Last mount:\t"); - if (m.last_mount) - bch2_prt_datetime(out, le64_to_cpu(m.last_mount)); - else - prt_printf(out, "(never)"); - prt_newline(out); - - prt_printf(out, "Last superblock write:\t%llu\n", le64_to_cpu(m.seq)); - - prt_printf(out, "State:\t%s\n", - BCH_MEMBER_STATE(&m) < BCH_MEMBER_STATE_NR - ? bch2_member_states[BCH_MEMBER_STATE(&m)] - : "unknown"); - - prt_printf(out, "Data allowed:\t"); - if (BCH_MEMBER_DATA_ALLOWED(&m)) - prt_bitflags(out, __bch2_data_types, BCH_MEMBER_DATA_ALLOWED(&m)); - else - prt_printf(out, "(none)"); - prt_newline(out); - - prt_printf(out, "Has data:\t"); - if (data_have) - prt_bitflags(out, __bch2_data_types, data_have); - else - prt_printf(out, "(none)"); - prt_newline(out); - - prt_printf(out, "Btree allocated bitmap blocksize:\t"); - prt_units_u64(out, 1ULL << m.btree_bitmap_shift); - prt_newline(out); - - prt_printf(out, "Btree allocated bitmap:\t"); - bch2_prt_u64_base2_nbits(out, le64_to_cpu(m.btree_allocated_bitmap), 64); - prt_newline(out); - - prt_printf(out, "Durability:\t%llu\n", BCH_MEMBER_DURABILITY(&m) ? BCH_MEMBER_DURABILITY(&m) - 1 : 1); - - prt_printf(out, "Discard:\t%llu\n", BCH_MEMBER_DISCARD(&m)); - prt_printf(out, "Freespace initialized:\t%llu\n", BCH_MEMBER_FREESPACE_INITIALIZED(&m)); - - printbuf_indent_sub(out, 2); -} - -static int bch2_sb_members_v1_validate(struct bch_sb *sb, struct bch_sb_field *f, - enum bch_validate_flags flags, struct printbuf *err) -{ - struct bch_sb_field_members_v1 *mi = field_to_type(f, members_v1); - unsigned i; - - if ((void *) members_v1_get_mut(mi, sb->nr_devices) > vstruct_end(&mi->field)) { - prt_printf(err, "too many devices for section size"); - return -BCH_ERR_invalid_sb_members; - } - - for (i = 0; i < sb->nr_devices; i++) { - struct bch_member m = members_v1_get(mi, i); - - int ret = validate_member(err, m, sb, i); - if (ret) - return ret; - } - - return 0; -} - -static void bch2_sb_members_v1_to_text(struct printbuf *out, struct bch_sb *sb, - struct bch_sb_field *f) -{ - struct bch_sb_field_members_v1 *mi = field_to_type(f, members_v1); - struct bch_sb_field_disk_groups *gi = bch2_sb_field_get(sb, disk_groups); - unsigned i; - - for (i = 0; i < sb->nr_devices; i++) - member_to_text(out, members_v1_get(mi, i), gi, sb, i); -} - -const struct bch_sb_field_ops bch_sb_field_ops_members_v1 = { - .validate = bch2_sb_members_v1_validate, - .to_text = bch2_sb_members_v1_to_text, -}; - -static void bch2_sb_members_v2_to_text(struct printbuf *out, struct bch_sb *sb, - struct bch_sb_field *f) -{ - struct bch_sb_field_members_v2 *mi = field_to_type(f, members_v2); - struct bch_sb_field_disk_groups *gi = bch2_sb_field_get(sb, disk_groups); - unsigned i; - - for (i = 0; i < sb->nr_devices; i++) - member_to_text(out, members_v2_get(mi, i), gi, sb, i); -} - -static int bch2_sb_members_v2_validate(struct bch_sb *sb, struct bch_sb_field *f, - enum bch_validate_flags flags, struct printbuf *err) -{ - struct bch_sb_field_members_v2 *mi = field_to_type(f, members_v2); - size_t mi_bytes = (void *) __bch2_members_v2_get_mut(mi, sb->nr_devices) - - (void *) mi; - - if (mi_bytes > vstruct_bytes(&mi->field)) { - prt_printf(err, "section too small (%zu > %zu)", - mi_bytes, vstruct_bytes(&mi->field)); - return -BCH_ERR_invalid_sb_members; - } - - for (unsigned i = 0; i < sb->nr_devices; i++) { - int ret = validate_member(err, members_v2_get(mi, i), sb, i); - if (ret) - return ret; - } - - return 0; -} - -const struct bch_sb_field_ops bch_sb_field_ops_members_v2 = { - .validate = bch2_sb_members_v2_validate, - .to_text = bch2_sb_members_v2_to_text, -}; - -void bch2_sb_members_from_cpu(struct bch_fs *c) -{ - struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2); - - rcu_read_lock(); - for_each_member_device_rcu(c, ca, NULL) { - struct bch_member *m = __bch2_members_v2_get_mut(mi, ca->dev_idx); - - for (unsigned e = 0; e < BCH_MEMBER_ERROR_NR; e++) - m->errors[e] = cpu_to_le64(atomic64_read(&ca->errors[e])); - } - rcu_read_unlock(); -} - -void bch2_dev_io_errors_to_text(struct printbuf *out, struct bch_dev *ca) -{ - struct bch_fs *c = ca->fs; - struct bch_member m; - - mutex_lock(&ca->fs->sb_lock); - m = bch2_sb_member_get(c->disk_sb.sb, ca->dev_idx); - mutex_unlock(&ca->fs->sb_lock); - - printbuf_tabstop_push(out, 12); - - prt_str(out, "IO errors since filesystem creation"); - prt_newline(out); - - printbuf_indent_add(out, 2); - for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) - prt_printf(out, "%s:\t%llu\n", bch2_member_error_strs[i], atomic64_read(&ca->errors[i])); - printbuf_indent_sub(out, 2); - - prt_str(out, "IO errors since "); - bch2_pr_time_units(out, (ktime_get_real_seconds() - le64_to_cpu(m.errors_reset_time)) * NSEC_PER_SEC); - prt_str(out, " ago"); - prt_newline(out); - - printbuf_indent_add(out, 2); - for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) - prt_printf(out, "%s:\t%llu\n", bch2_member_error_strs[i], - atomic64_read(&ca->errors[i]) - le64_to_cpu(m.errors_at_reset[i])); - printbuf_indent_sub(out, 2); -} - -void bch2_dev_errors_reset(struct bch_dev *ca) -{ - struct bch_fs *c = ca->fs; - struct bch_member *m; - - mutex_lock(&c->sb_lock); - m = bch2_members_v2_get_mut(c->disk_sb.sb, ca->dev_idx); - for (unsigned i = 0; i < ARRAY_SIZE(m->errors_at_reset); i++) - m->errors_at_reset[i] = cpu_to_le64(atomic64_read(&ca->errors[i])); - m->errors_reset_time = cpu_to_le64(ktime_get_real_seconds()); - - bch2_write_super(c); - mutex_unlock(&c->sb_lock); -} - -/* - * Per member "range has btree nodes" bitmap: - * - * This is so that if we ever have to run the btree node scan to repair we don't - * have to scan full devices: - */ - -bool bch2_dev_btree_bitmap_marked(struct bch_fs *c, struct bkey_s_c k) -{ - bool ret = true; - rcu_read_lock(); - bkey_for_each_ptr(bch2_bkey_ptrs_c(k), ptr) { - struct bch_dev *ca = bch2_dev_rcu(c, ptr->dev); - if (!ca) - continue; - - if (!bch2_dev_btree_bitmap_marked_sectors(ca, ptr->offset, btree_sectors(c))) { - ret = false; - break; - } - } - rcu_read_unlock(); - return ret; -} - -static void __bch2_dev_btree_bitmap_mark(struct bch_sb_field_members_v2 *mi, unsigned dev, - u64 start, unsigned sectors) -{ - struct bch_member *m = __bch2_members_v2_get_mut(mi, dev); - u64 bitmap = le64_to_cpu(m->btree_allocated_bitmap); - - u64 end = start + sectors; - - int resize = ilog2(roundup_pow_of_two(end)) - (m->btree_bitmap_shift + 6); - if (resize > 0) { - u64 new_bitmap = 0; - - for (unsigned i = 0; i < 64; i++) - if (bitmap & BIT_ULL(i)) - new_bitmap |= BIT_ULL(i >> resize); - bitmap = new_bitmap; - m->btree_bitmap_shift += resize; - } - - BUG_ON(m->btree_bitmap_shift > 57); - BUG_ON(end > 64ULL << m->btree_bitmap_shift); - - for (unsigned bit = start >> m->btree_bitmap_shift; - (u64) bit << m->btree_bitmap_shift < end; - bit++) - bitmap |= BIT_ULL(bit); - - m->btree_allocated_bitmap = cpu_to_le64(bitmap); -} - -void bch2_dev_btree_bitmap_mark(struct bch_fs *c, struct bkey_s_c k) -{ - lockdep_assert_held(&c->sb_lock); - - struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2); - bkey_for_each_ptr(bch2_bkey_ptrs_c(k), ptr) { - if (!bch2_member_exists(c->disk_sb.sb, ptr->dev)) - continue; - - __bch2_dev_btree_bitmap_mark(mi, ptr->dev, ptr->offset, btree_sectors(c)); - } -} |