path: root/fs/bcachefs/recovery.c

// SPDX-License-Identifier: GPL-2.0

#include "bcachefs.h"
#include "alloc_background.h"
#include "bkey_buf.h"
#include "btree_journal_iter.h"
#include "btree_node_scan.h"
#include "btree_update.h"
#include "btree_update_interior.h"
#include "btree_io.h"
#include "buckets.h"
#include "dirent.h"
#include "disk_accounting.h"
#include "errcode.h"
#include "error.h"
#include "fs-common.h"
#include "journal_io.h"
#include "journal_reclaim.h"
#include "journal_seq_blacklist.h"
#include "logged_ops.h"
#include "move.h"
#include "quota.h"
#include "rebalance.h"
#include "recovery.h"
#include "recovery_passes.h"
#include "replicas.h"
#include "sb-clean.h"
#include "sb-downgrade.h"
#include "snapshot.h"
#include "super-io.h"

#include <linux/sort.h>
#include <linux/stat.h>

#define QSTR(n) { { { .len = strlen(n) } }, .name = n }

void bch2_btree_lost_data(struct bch_fs *c, enum btree_id btree)
{
	if (btree >= BTREE_ID_NR_MAX)
		return;

	u64 b = BIT_ULL(btree);

	if (!(c->sb.btrees_lost_data & b)) {
		bch_err(c, "flagging btree %s lost data", bch2_btree_id_str(btree));

		mutex_lock(&c->sb_lock);
		bch2_sb_field_get(c->disk_sb.sb, ext)->btrees_lost_data |= cpu_to_le64(b);
		bch2_write_super(c);
		mutex_unlock(&c->sb_lock);
	}
}

/* for -o reconstruct_alloc: */
static void bch2_reconstruct_alloc(struct bch_fs *c)
{
	bch2_journal_log_msg(c, "dropping alloc info");
	bch_info(c, "dropping and reconstructing all alloc info");

	mutex_lock(&c->sb_lock);
	struct bch_sb_field_ext *ext = bch2_sb_field_get(c->disk_sb.sb, ext);

	__set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_allocations, ext->recovery_passes_required);
	__set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_alloc_info, ext->recovery_passes_required);
	__set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_lrus, ext->recovery_passes_required);
	__set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_extents_to_backpointers, ext->recovery_passes_required);
	__set_bit_le64(BCH_RECOVERY_PASS_STABLE_check_alloc_to_lru_refs, ext->recovery_passes_required);

	__set_bit_le64(BCH_FSCK_ERR_ptr_to_missing_alloc_key, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_ptr_gen_newer_than_bucket_gen, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_stale_dirty_ptr, ext->errors_silent);

	__set_bit_le64(BCH_FSCK_ERR_dev_usage_buckets_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_dev_usage_sectors_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_dev_usage_fragmented_wrong, ext->errors_silent);

	__set_bit_le64(BCH_FSCK_ERR_fs_usage_btree_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_fs_usage_cached_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_fs_usage_persistent_reserved_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_fs_usage_replicas_wrong, ext->errors_silent);

	__set_bit_le64(BCH_FSCK_ERR_alloc_key_data_type_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_alloc_key_gen_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_alloc_key_dirty_sectors_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_alloc_key_cached_sectors_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_alloc_key_stripe_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_alloc_key_stripe_redundancy_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_need_discard_key_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_freespace_key_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_bucket_gens_key_wrong, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_freespace_hole_missing, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_ptr_to_missing_backpointer, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_lru_entry_bad, ext->errors_silent);
	__set_bit_le64(BCH_FSCK_ERR_accounting_mismatch, ext->errors_silent);
	c->sb.compat &= ~(1ULL << BCH_COMPAT_alloc_info);

	c->opts.recovery_passes |= bch2_recovery_passes_from_stable(le64_to_cpu(ext->recovery_passes_required[0]));

	bch2_write_super(c);
	mutex_unlock(&c->sb_lock);

	bch2_shoot_down_journal_keys(c, BTREE_ID_alloc,
				     0, BTREE_MAX_DEPTH, POS_MIN, SPOS_MAX);
	bch2_shoot_down_journal_keys(c, BTREE_ID_backpointers,
				     0, BTREE_MAX_DEPTH, POS_MIN, SPOS_MAX);
	bch2_shoot_down_journal_keys(c, BTREE_ID_need_discard,
				     0, BTREE_MAX_DEPTH, POS_MIN, SPOS_MAX);
	bch2_shoot_down_journal_keys(c, BTREE_ID_freespace,
				     0, BTREE_MAX_DEPTH, POS_MIN, SPOS_MAX);
	bch2_shoot_down_journal_keys(c, BTREE_ID_bucket_gens,
				     0, BTREE_MAX_DEPTH, POS_MIN, SPOS_MAX