1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _BCACHEFS_ERROR_H 3 #define _BCACHEFS_ERROR_H 4 5 #include <linux/list.h> 6 #include <linux/printk.h> 7 #include "sb-errors.h" 8 9 struct bch_dev; 10 struct bch_fs; 11 struct work_struct; 12 13 /* 14 * XXX: separate out errors that indicate on disk data is inconsistent, and flag 15 * superblock as such 16 */ 17 18 /* Error messages: */ 19 20 /* 21 * Inconsistency errors: The on disk data is inconsistent. If these occur during 22 * initial recovery, they don't indicate a bug in the running code - we walk all 23 * the metadata before modifying anything. If they occur at runtime, they 24 * indicate either a bug in the running code or (less likely) data is being 25 * silently corrupted under us. 26 * 27 * XXX: audit all inconsistent errors and make sure they're all recoverable, in 28 * BCH_ON_ERROR_CONTINUE mode 29 */ 30 31 bool bch2_inconsistent_error(struct bch_fs *); 32 33 void bch2_topology_error(struct bch_fs *); 34 35 #define bch2_fs_inconsistent(c, ...) \ 36 ({ \ 37 bch_err(c, __VA_ARGS__); \ 38 bch2_inconsistent_error(c); \ 39 }) 40 41 #define bch2_fs_inconsistent_on(cond, c, ...) \ 42 ({ \ 43 bool _ret = unlikely(!!(cond)); \ 44 \ 45 if (_ret) \ 46 bch2_fs_inconsistent(c, __VA_ARGS__); \ 47 _ret; \ 48 }) 49 50 /* 51 * Later we might want to mark only the particular device inconsistent, not the 52 * entire filesystem: 53 */ 54 55 #define bch2_dev_inconsistent(ca, ...) \ 56 do { \ 57 bch_err(ca, __VA_ARGS__); \ 58 bch2_inconsistent_error((ca)->fs); \ 59 } while (0) 60 61 #define bch2_dev_inconsistent_on(cond, ca, ...) \ 62 ({ \ 63 bool _ret = unlikely(!!(cond)); \ 64 \ 65 if (_ret) \ 66 bch2_dev_inconsistent(ca, __VA_ARGS__); \ 67 _ret; \ 68 }) 69 70 /* 71 * When a transaction update discovers or is causing a fs inconsistency, it's 72 * helpful to also dump the pending updates: 73 */ 74 #define bch2_trans_inconsistent(trans, ...) \ 75 ({ \ 76 bch_err(trans->c, __VA_ARGS__); \ 77 bch2_dump_trans_updates(trans); \ 78 bch2_inconsistent_error(trans->c); \ 79 }) 80 81 #define bch2_trans_inconsistent_on(cond, trans, ...) \ 82 ({ \ 83 bool _ret = unlikely(!!(cond)); \ 84 \ 85 if (_ret) \ 86 bch2_trans_inconsistent(trans, __VA_ARGS__); \ 87 _ret; \ 88 }) 89 90 /* 91 * Fsck errors: inconsistency errors we detect at mount time, and should ideally 92 * be able to repair: 93 */ 94 95 struct fsck_err_state { 96 struct list_head list; 97 const char *fmt; 98 u64 nr; 99 bool ratelimited; 100 int ret; 101 int fix; 102 char *last_msg; 103 }; 104 105 enum bch_fsck_flags { 106 FSCK_CAN_FIX = 1 << 0, 107 FSCK_CAN_IGNORE = 1 << 1, 108 FSCK_NEED_FSCK = 1 << 2, 109 FSCK_NO_RATELIMIT = 1 << 3, 110 }; 111 112 #define fsck_err_count(_c, _err) bch2_sb_err_count(_c, BCH_FSCK_ERR_##_err) 113 114 __printf(4, 5) __cold 115 int bch2_fsck_err(struct bch_fs *, 116 enum bch_fsck_flags, 117 enum bch_sb_error_id, 118 const char *, ...); 119 void bch2_flush_fsck_errs(struct bch_fs *); 120 121 #define __fsck_err(c, _flags, _err_type, ...) \ 122 ({ \ 123 int _ret = bch2_fsck_err(c, _flags, BCH_FSCK_ERR_##_err_type, \ 124 __VA_ARGS__); \ 125 \ 126 if (_ret != -BCH_ERR_fsck_fix && \ 127 _ret != -BCH_ERR_fsck_ignore) { \ 128 ret = _ret; \ 129 goto fsck_err; \ 130 } \ 131 \ 132 _ret == -BCH_ERR_fsck_fix; \ 133 }) 134 135 /* These macros return true if error should be fixed: */ 136 137 /* XXX: mark in superblock that filesystem contains errors, if we ignore: */ 138 139 #define __fsck_err_on(cond, c, _flags, _err_type, ...) \ 140 (unlikely(cond) ? __fsck_err(c, _flags, _err_type, __VA_ARGS__) : false) 141 142 #define need_fsck_err_on(cond, c, _err_type, ...) \ 143 __fsck_err_on(cond, c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, _err_type, __VA_ARGS__) 144 145 #define need_fsck_err(c, _err_type, ...) \ 146 __fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, _err_type, __VA_ARGS__) 147 148 #define mustfix_fsck_err(c, _err_type, ...) \ 149 __fsck_err(c, FSCK_CAN_FIX, _err_type, __VA_ARGS__) 150 151 #define mustfix_fsck_err_on(cond, c, _err_type, ...) \ 152 __fsck_err_on(cond, c, FSCK_CAN_FIX, _err_type, __VA_ARGS__) 153 154 #define fsck_err(c, _err_type, ...) \ 155 __fsck_err(c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__) 156 157 #define fsck_err_on(cond, c, _err_type, ...) \ 158 __fsck_err_on(cond, c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__) 159 160 __printf(4, 0) 161 static inline void bch2_bkey_fsck_err(struct bch_fs *c, 162 struct printbuf *err_msg, 163 enum bch_sb_error_id err_type, 164 const char *fmt, ...) 165 { 166 va_list args; 167 168 va_start(args, fmt); 169 prt_vprintf(err_msg, fmt, args); 170 va_end(args); 171 } 172 173 #define bkey_fsck_err(c, _err_msg, _err_type, ...) \ 174 do { \ 175 prt_printf(_err_msg, __VA_ARGS__); \ 176 bch2_sb_error_count(c, BCH_FSCK_ERR_##_err_type); \ 177 ret = -BCH_ERR_invalid_bkey; \ 178 goto fsck_err; \ 179 } while (0) 180 181 #define bkey_fsck_err_on(cond, ...) \ 182 do { \ 183 if (unlikely(cond)) \ 184 bkey_fsck_err(__VA_ARGS__); \ 185 } while (0) 186 187 /* 188 * Fatal errors: these don't indicate a bug, but we can't continue running in RW 189 * mode - pretty much just due to metadata IO errors: 190 */ 191 192 void bch2_fatal_error(struct bch_fs *); 193 194 #define bch2_fs_fatal_error(c, ...) \ 195 do { \ 196 bch_err(c, __VA_ARGS__); \ 197 bch2_fatal_error(c); \ 198 } while (0) 199 200 #define bch2_fs_fatal_err_on(cond, c, ...) \ 201 ({ \ 202 bool _ret = unlikely(!!(cond)); \ 203 \ 204 if (_ret) \ 205 bch2_fs_fatal_error(c, __VA_ARGS__); \ 206 _ret; \ 207 }) 208 209 /* 210 * IO errors: either recoverable metadata IO (because we have replicas), or data 211 * IO - we need to log it and print out a message, but we don't (necessarily) 212 * want to shut down the fs: 213 */ 214 215 void bch2_io_error_work(struct work_struct *); 216 217 /* Does the error handling without logging a message */ 218 void bch2_io_error(struct bch_dev *, enum bch_member_error_type); 219 220 #define bch2_dev_io_err_on(cond, ca, _type, ...) \ 221 ({ \ 222 bool _ret = (cond); \ 223 \ 224 if (_ret) { \ 225 bch_err_dev_ratelimited(ca, __VA_ARGS__); \ 226 bch2_io_error(ca, _type); \ 227 } \ 228 _ret; \ 229 }) 230 231 #define bch2_dev_inum_io_err_on(cond, ca, _type, ...) \ 232 ({ \ 233 bool _ret = (cond); \ 234 \ 235 if (_ret) { \ 236 bch_err_inum_offset_ratelimited(ca, __VA_ARGS__); \ 237 bch2_io_error(ca, _type); \ 238 } \ 239 _ret; \ 240 }) 241 242 #endif /* _BCACHEFS_ERROR_H */ 243