243 lines
6.1 KiB
C
243 lines
6.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_ERROR_H
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#define _BCACHEFS_ERROR_H
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#include <linux/list.h>
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#include <linux/printk.h>
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#include "sb-errors.h"
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struct bch_dev;
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struct bch_fs;
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struct work_struct;
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/*
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* XXX: separate out errors that indicate on disk data is inconsistent, and flag
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* superblock as such
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*/
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/* Error messages: */
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/*
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* Inconsistency errors: The on disk data is inconsistent. If these occur during
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* initial recovery, they don't indicate a bug in the running code - we walk all
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* the metadata before modifying anything. If they occur at runtime, they
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* indicate either a bug in the running code or (less likely) data is being
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* silently corrupted under us.
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*
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* XXX: audit all inconsistent errors and make sure they're all recoverable, in
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* BCH_ON_ERROR_CONTINUE mode
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*/
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bool bch2_inconsistent_error(struct bch_fs *);
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void bch2_topology_error(struct bch_fs *);
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#define bch2_fs_inconsistent(c, ...) \
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({ \
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bch_err(c, __VA_ARGS__); \
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bch2_inconsistent_error(c); \
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})
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#define bch2_fs_inconsistent_on(cond, c, ...) \
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({ \
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bool _ret = unlikely(!!(cond)); \
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\
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if (_ret) \
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bch2_fs_inconsistent(c, __VA_ARGS__); \
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_ret; \
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})
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/*
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* Later we might want to mark only the particular device inconsistent, not the
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* entire filesystem:
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*/
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#define bch2_dev_inconsistent(ca, ...) \
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do { \
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bch_err(ca, __VA_ARGS__); \
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bch2_inconsistent_error((ca)->fs); \
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} while (0)
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#define bch2_dev_inconsistent_on(cond, ca, ...) \
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({ \
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bool _ret = unlikely(!!(cond)); \
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\
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if (_ret) \
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bch2_dev_inconsistent(ca, __VA_ARGS__); \
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_ret; \
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})
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/*
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* When a transaction update discovers or is causing a fs inconsistency, it's
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* helpful to also dump the pending updates:
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*/
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#define bch2_trans_inconsistent(trans, ...) \
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({ \
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bch_err(trans->c, __VA_ARGS__); \
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bch2_dump_trans_updates(trans); \
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bch2_inconsistent_error(trans->c); \
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})
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#define bch2_trans_inconsistent_on(cond, trans, ...) \
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({ \
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bool _ret = unlikely(!!(cond)); \
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\
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if (_ret) \
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bch2_trans_inconsistent(trans, __VA_ARGS__); \
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_ret; \
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})
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/*
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* Fsck errors: inconsistency errors we detect at mount time, and should ideally
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* be able to repair:
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*/
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struct fsck_err_state {
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struct list_head list;
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const char *fmt;
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u64 nr;
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bool ratelimited;
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int ret;
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int fix;
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char *last_msg;
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};
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enum bch_fsck_flags {
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FSCK_CAN_FIX = 1 << 0,
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FSCK_CAN_IGNORE = 1 << 1,
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FSCK_NEED_FSCK = 1 << 2,
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FSCK_NO_RATELIMIT = 1 << 3,
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};
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#define fsck_err_count(_c, _err) bch2_sb_err_count(_c, BCH_FSCK_ERR_##_err)
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__printf(4, 5) __cold
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int bch2_fsck_err(struct bch_fs *,
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enum bch_fsck_flags,
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enum bch_sb_error_id,
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const char *, ...);
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void bch2_flush_fsck_errs(struct bch_fs *);
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#define __fsck_err(c, _flags, _err_type, ...) \
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({ \
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int _ret = bch2_fsck_err(c, _flags, BCH_FSCK_ERR_##_err_type, \
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__VA_ARGS__); \
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\
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if (_ret != -BCH_ERR_fsck_fix && \
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_ret != -BCH_ERR_fsck_ignore) { \
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ret = _ret; \
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goto fsck_err; \
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} \
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\
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_ret == -BCH_ERR_fsck_fix; \
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})
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/* These macros return true if error should be fixed: */
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/* XXX: mark in superblock that filesystem contains errors, if we ignore: */
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#define __fsck_err_on(cond, c, _flags, _err_type, ...) \
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(unlikely(cond) ? __fsck_err(c, _flags, _err_type, __VA_ARGS__) : false)
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#define need_fsck_err_on(cond, c, _err_type, ...) \
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__fsck_err_on(cond, c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, _err_type, __VA_ARGS__)
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#define need_fsck_err(c, _err_type, ...) \
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__fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, _err_type, __VA_ARGS__)
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#define mustfix_fsck_err(c, _err_type, ...) \
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__fsck_err(c, FSCK_CAN_FIX, _err_type, __VA_ARGS__)
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#define mustfix_fsck_err_on(cond, c, _err_type, ...) \
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__fsck_err_on(cond, c, FSCK_CAN_FIX, _err_type, __VA_ARGS__)
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#define fsck_err(c, _err_type, ...) \
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__fsck_err(c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__)
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#define fsck_err_on(cond, c, _err_type, ...) \
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__fsck_err_on(cond, c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__)
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__printf(4, 0)
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static inline void bch2_bkey_fsck_err(struct bch_fs *c,
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struct printbuf *err_msg,
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enum bch_sb_error_id err_type,
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const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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prt_vprintf(err_msg, fmt, args);
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va_end(args);
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}
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#define bkey_fsck_err(c, _err_msg, _err_type, ...) \
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do { \
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prt_printf(_err_msg, __VA_ARGS__); \
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bch2_sb_error_count(c, BCH_FSCK_ERR_##_err_type); \
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ret = -BCH_ERR_invalid_bkey; \
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goto fsck_err; \
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} while (0)
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#define bkey_fsck_err_on(cond, ...) \
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do { \
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if (unlikely(cond)) \
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bkey_fsck_err(__VA_ARGS__); \
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} while (0)
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/*
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* Fatal errors: these don't indicate a bug, but we can't continue running in RW
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* mode - pretty much just due to metadata IO errors:
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*/
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void bch2_fatal_error(struct bch_fs *);
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#define bch2_fs_fatal_error(c, ...) \
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do { \
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bch_err(c, __VA_ARGS__); \
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bch2_fatal_error(c); \
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} while (0)
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#define bch2_fs_fatal_err_on(cond, c, ...) \
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({ \
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bool _ret = unlikely(!!(cond)); \
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\
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if (_ret) \
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bch2_fs_fatal_error(c, __VA_ARGS__); \
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_ret; \
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})
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/*
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* IO errors: either recoverable metadata IO (because we have replicas), or data
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* IO - we need to log it and print out a message, but we don't (necessarily)
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* want to shut down the fs:
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*/
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void bch2_io_error_work(struct work_struct *);
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/* Does the error handling without logging a message */
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void bch2_io_error(struct bch_dev *, enum bch_member_error_type);
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#define bch2_dev_io_err_on(cond, ca, _type, ...) \
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({ \
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bool _ret = (cond); \
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\
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if (_ret) { \
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bch_err_dev_ratelimited(ca, __VA_ARGS__); \
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bch2_io_error(ca, _type); \
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} \
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_ret; \
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})
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#define bch2_dev_inum_io_err_on(cond, ca, _type, ...) \
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({ \
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bool _ret = (cond); \
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\
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if (_ret) { \
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bch_err_inum_offset_ratelimited(ca, __VA_ARGS__); \
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bch2_io_error(ca, _type); \
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} \
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_ret; \
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})
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#endif /* _BCACHEFS_ERROR_H */
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