1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_ERROR_H
3 #define _BCACHEFS_ERROR_H
5 #include <linux/list.h>
6 #include <linux/printk.h>
13 * XXX: separate out errors that indicate on disk data is inconsistent, and flag
20 * Inconsistency errors: The on disk data is inconsistent. If these occur during
21 * initial recovery, they don't indicate a bug in the running code - we walk all
22 * the metadata before modifying anything. If they occur at runtime, they
23 * indicate either a bug in the running code or (less likely) data is being
24 * silently corrupted under us.
26 * XXX: audit all inconsistent errors and make sure they're all recoverable, in
27 * BCH_ON_ERROR_CONTINUE mode
30 bool bch2_inconsistent_error(struct bch_fs *);
32 void bch2_topology_error(struct bch_fs *);
34 #define bch2_fs_inconsistent(c, ...) \
36 bch_err(c, __VA_ARGS__); \
37 bch2_inconsistent_error(c); \
40 #define bch2_fs_inconsistent_on(cond, c, ...) \
42 bool _ret = unlikely(!!(cond)); \
45 bch2_fs_inconsistent(c, __VA_ARGS__); \
50 * Later we might want to mark only the particular device inconsistent, not the
54 #define bch2_dev_inconsistent(ca, ...) \
56 bch_err(ca, __VA_ARGS__); \
57 bch2_inconsistent_error((ca)->fs); \
60 #define bch2_dev_inconsistent_on(cond, ca, ...) \
62 bool _ret = unlikely(!!(cond)); \
65 bch2_dev_inconsistent(ca, __VA_ARGS__); \
70 * When a transaction update discovers or is causing a fs inconsistency, it's
71 * helpful to also dump the pending updates:
73 #define bch2_trans_inconsistent(trans, ...) \
75 bch_err(trans->c, __VA_ARGS__); \
76 bch2_dump_trans_updates(trans); \
77 bch2_inconsistent_error(trans->c); \
80 #define bch2_trans_inconsistent_on(cond, trans, ...) \
82 bool _ret = unlikely(!!(cond)); \
85 bch2_trans_inconsistent(trans, __VA_ARGS__); \
90 * Fsck errors: inconsistency errors we detect at mount time, and should ideally
101 struct fsck_err_state {
102 struct list_head list;
110 #define FSCK_CAN_FIX (1 << 0)
111 #define FSCK_CAN_IGNORE (1 << 1)
112 #define FSCK_NEED_FSCK (1 << 2)
113 #define FSCK_NO_RATELIMIT (1 << 3)
115 __printf(3, 4) __cold
116 int bch2_fsck_err(struct bch_fs *, unsigned, const char *, ...);
117 void bch2_flush_fsck_errs(struct bch_fs *);
119 #define __fsck_err(c, _flags, msg, ...) \
121 int _ret = bch2_fsck_err(c, _flags, msg, ##__VA_ARGS__); \
123 if (_ret != -BCH_ERR_fsck_fix && \
124 _ret != -BCH_ERR_fsck_ignore) { \
129 _ret == -BCH_ERR_fsck_fix; \
132 /* These macros return true if error should be fixed: */
134 /* XXX: mark in superblock that filesystem contains errors, if we ignore: */
136 #define __fsck_err_on(cond, c, _flags, ...) \
137 (unlikely(cond) ? __fsck_err(c, _flags, ##__VA_ARGS__) : false)
139 #define need_fsck_err_on(cond, c, ...) \
140 __fsck_err_on(cond, c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, ##__VA_ARGS__)
142 #define need_fsck_err(c, ...) \
143 __fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, ##__VA_ARGS__)
145 #define mustfix_fsck_err(c, ...) \
146 __fsck_err(c, FSCK_CAN_FIX, ##__VA_ARGS__)
148 #define mustfix_fsck_err_on(cond, c, ...) \
149 __fsck_err_on(cond, c, FSCK_CAN_FIX, ##__VA_ARGS__)
151 #define fsck_err(c, ...) \
152 __fsck_err(c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, ##__VA_ARGS__)
154 #define fsck_err_on(cond, c, ...) \
155 __fsck_err_on(cond, c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, ##__VA_ARGS__)
158 * Fatal errors: these don't indicate a bug, but we can't continue running in RW
159 * mode - pretty much just due to metadata IO errors:
162 void bch2_fatal_error(struct bch_fs *);
164 #define bch2_fs_fatal_error(c, ...) \
166 bch_err(c, __VA_ARGS__); \
167 bch2_fatal_error(c); \
170 #define bch2_fs_fatal_err_on(cond, c, ...) \
172 bool _ret = unlikely(!!(cond)); \
175 bch2_fs_fatal_error(c, __VA_ARGS__); \
180 * IO errors: either recoverable metadata IO (because we have replicas), or data
181 * IO - we need to log it and print out a message, but we don't (necessarily)
182 * want to shut down the fs:
185 void bch2_io_error_work(struct work_struct *);
187 /* Does the error handling without logging a message */
188 void bch2_io_error(struct bch_dev *);
190 #define bch2_dev_io_err_on(cond, ca, ...) \
192 bool _ret = (cond); \
195 bch_err_dev_ratelimited(ca, __VA_ARGS__); \
201 #define bch2_dev_inum_io_err_on(cond, ca, ...) \
203 bool _ret = (cond); \
206 bch_err_inum_offset_ratelimited(ca, __VA_ARGS__); \
212 #endif /* _BCACHEFS_ERROR_H */