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 #define bch2_fs_inconsistent(c, ...) \
34 bch_err(c, __VA_ARGS__); \
35 bch2_inconsistent_error(c); \
38 #define bch2_fs_inconsistent_on(cond, c, ...) \
40 int _ret = !!(cond); \
43 bch2_fs_inconsistent(c, __VA_ARGS__); \
48 * Later we might want to mark only the particular device inconsistent, not the
52 #define bch2_dev_inconsistent(ca, ...) \
54 bch_err(ca, __VA_ARGS__); \
55 bch2_inconsistent_error((ca)->fs); \
58 #define bch2_dev_inconsistent_on(cond, ca, ...) \
60 int _ret = !!(cond); \
63 bch2_dev_inconsistent(ca, __VA_ARGS__); \
68 * Fsck errors: inconsistency errors we detect at mount time, and should ideally
74 BCH_FSCK_ERRORS_NOT_FIXED = 1,
75 BCH_FSCK_REPAIR_UNIMPLEMENTED = 2,
76 BCH_FSCK_REPAIR_IMPOSSIBLE = 3,
77 BCH_FSCK_UNKNOWN_VERSION = 4,
93 struct fsck_err_state {
94 struct list_head list;
101 #define FSCK_CAN_FIX (1 << 0)
102 #define FSCK_CAN_IGNORE (1 << 1)
103 #define FSCK_NEED_FSCK (1 << 2)
105 __printf(3, 4) __cold
106 enum fsck_err_ret bch2_fsck_err(struct bch_fs *,
107 unsigned, const char *, ...);
108 void bch2_flush_fsck_errs(struct bch_fs *);
110 #define __fsck_err(c, _flags, msg, ...) \
112 int _fix = bch2_fsck_err(c, _flags, msg, ##__VA_ARGS__);\
114 if (_fix == FSCK_ERR_EXIT) { \
115 bch_err(c, "Unable to continue, halting"); \
116 ret = BCH_FSCK_ERRORS_NOT_FIXED; \
123 /* These macros return true if error should be fixed: */
125 /* XXX: mark in superblock that filesystem contains errors, if we ignore: */
127 #define __fsck_err_on(cond, c, _flags, ...) \
128 ((cond) ? __fsck_err(c, _flags, ##__VA_ARGS__) : false)
130 #define need_fsck_err_on(cond, c, ...) \
131 __fsck_err_on(cond, c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, ##__VA_ARGS__)
133 #define need_fsck_err(c, ...) \
134 __fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, ##__VA_ARGS__)
136 #define mustfix_fsck_err(c, ...) \
137 __fsck_err(c, FSCK_CAN_FIX, ##__VA_ARGS__)
139 #define mustfix_fsck_err_on(cond, c, ...) \
140 __fsck_err_on(cond, c, FSCK_CAN_FIX, ##__VA_ARGS__)
142 #define fsck_err(c, ...) \
143 __fsck_err(c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, ##__VA_ARGS__)
145 #define fsck_err_on(cond, c, ...) \
146 __fsck_err_on(cond, c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, ##__VA_ARGS__)
149 * Fatal errors: these don't indicate a bug, but we can't continue running in RW
150 * mode - pretty much just due to metadata IO errors:
153 void bch2_fatal_error(struct bch_fs *);
155 #define bch2_fs_fatal_error(c, ...) \
157 bch_err(c, __VA_ARGS__); \
158 bch2_fatal_error(c); \
161 #define bch2_fs_fatal_err_on(cond, c, ...) \
163 int _ret = !!(cond); \
166 bch2_fs_fatal_error(c, __VA_ARGS__); \
171 * IO errors: either recoverable metadata IO (because we have replicas), or data
172 * IO - we need to log it and print out a message, but we don't (necessarily)
173 * want to shut down the fs:
176 void bch2_io_error_work(struct work_struct *);
178 /* Does the error handling without logging a message */
179 void bch2_io_error(struct bch_dev *);
181 /* Logs message and handles the error: */
182 #define bch2_dev_io_error(ca, fmt, ...) \
184 printk_ratelimited(KERN_ERR "bcachefs (%s): " fmt, \
185 (ca)->name, ##__VA_ARGS__); \
189 #define bch2_dev_inum_io_error(ca, _inum, _offset, fmt, ...) \
191 printk_ratelimited(KERN_ERR "bcachefs (%s inum %llu offset %llu): " fmt,\
192 (ca)->name, (_inum), (_offset), ##__VA_ARGS__); \
196 #define bch2_dev_io_err_on(cond, ca, ...) \
198 bool _ret = (cond); \
201 bch2_dev_io_error(ca, __VA_ARGS__); \
205 #define bch2_dev_inum_io_err_on(cond, ca, _inum, _offset, ...) \
207 bool _ret = (cond); \
210 bch2_dev_inum_io_error(ca, _inum, _offset, __VA_ARGS__);\
214 #endif /* _BCACHEFS_ERROR_H */