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 int bch2_topology_error(struct bch_fs *); 34 35 #define bch2_fs_topology_error(c, ...) \ 36 ({ \ 37 bch_err(c, "btree topology error: " __VA_ARGS__); \ 38 bch2_topology_error(c); \ 39 }) 40 41 #define bch2_fs_inconsistent(c, ...) \ 42 ({ \ 43 bch_err(c, __VA_ARGS__); \ 44 bch2_inconsistent_error(c); \ 45 }) 46 47 #define bch2_fs_inconsistent_on(cond, c, ...) \ 48 ({ \ 49 bool _ret = unlikely(!!(cond)); \ 50 \ 51 if (_ret) \ 52 bch2_fs_inconsistent(c, __VA_ARGS__); \ 53 _ret; \ 54 }) 55 56 /* 57 * Later we might want to mark only the particular device inconsistent, not the 58 * entire filesystem: 59 */ 60 61 #define bch2_dev_inconsistent(ca, ...) \ 62 do { \ 63 bch_err(ca, __VA_ARGS__); \ 64 bch2_inconsistent_error((ca)->fs); \ 65 } while (0) 66 67 #define bch2_dev_inconsistent_on(cond, ca, ...) \ 68 ({ \ 69 bool _ret = unlikely(!!(cond)); \ 70 \ 71 if (_ret) \ 72 bch2_dev_inconsistent(ca, __VA_ARGS__); \ 73 _ret; \ 74 }) 75 76 /* 77 * When a transaction update discovers or is causing a fs inconsistency, it's 78 * helpful to also dump the pending updates: 79 */ 80 #define bch2_trans_inconsistent(trans, ...) \ 81 ({ \ 82 bch_err(trans->c, __VA_ARGS__); \ 83 bch2_dump_trans_updates(trans); \ 84 bch2_inconsistent_error(trans->c); \ 85 }) 86 87 #define bch2_trans_inconsistent_on(cond, trans, ...) \ 88 ({ \ 89 bool _ret = unlikely(!!(cond)); \ 90 \ 91 if (_ret) \ 92 bch2_trans_inconsistent(trans, __VA_ARGS__); \ 93 _ret; \ 94 }) 95 96 /* 97 * Fsck errors: inconsistency errors we detect at mount time, and should ideally 98 * be able to repair: 99 */ 100 101 struct fsck_err_state { 102 struct list_head list; 103 const char *fmt; 104 u64 nr; 105 bool ratelimited; 106 int ret; 107 int fix; 108 char *last_msg; 109 }; 110 111 enum bch_fsck_flags { 112 FSCK_CAN_FIX = 1 << 0, 113 FSCK_CAN_IGNORE = 1 << 1, 114 FSCK_NEED_FSCK = 1 << 2, 115 FSCK_NO_RATELIMIT = 1 << 3, 116 }; 117 118 #define fsck_err_count(_c, _err) bch2_sb_err_count(_c, BCH_FSCK_ERR_##_err) 119 120 __printf(4, 5) __cold 121 int bch2_fsck_err(struct bch_fs *, 122 enum bch_fsck_flags, 123 enum bch_sb_error_id, 124 const char *, ...); 125 void bch2_flush_fsck_errs(struct bch_fs *); 126 127 #define __fsck_err(c, _flags, _err_type, ...) \ 128 ({ \ 129 int _ret = bch2_fsck_err(c, _flags, BCH_FSCK_ERR_##_err_type, \ 130 __VA_ARGS__); \ 131 \ 132 if (_ret != -BCH_ERR_fsck_fix && \ 133 _ret != -BCH_ERR_fsck_ignore) { \ 134 ret = _ret; \ 135 goto fsck_err; \ 136 } \ 137 \ 138 _ret == -BCH_ERR_fsck_fix; \ 139 }) 140 141 /* These macros return true if error should be fixed: */ 142 143 /* XXX: mark in superblock that filesystem contains errors, if we ignore: */ 144 145 #define __fsck_err_on(cond, c, _flags, _err_type, ...) \ 146 (unlikely(cond) ? __fsck_err(c, _flags, _err_type, __VA_ARGS__) : false) 147 148 #define need_fsck_err_on(cond, c, _err_type, ...) \ 149 __fsck_err_on(cond, c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, _err_type, __VA_ARGS__) 150 151 #define need_fsck_err(c, _err_type, ...) \ 152 __fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, _err_type, __VA_ARGS__) 153 154 #define mustfix_fsck_err(c, _err_type, ...) \ 155 __fsck_err(c, FSCK_CAN_FIX, _err_type, __VA_ARGS__) 156 157 #define mustfix_fsck_err_on(cond, c, _err_type, ...) \ 158 __fsck_err_on(cond, c, FSCK_CAN_FIX, _err_type, __VA_ARGS__) 159 160 #define fsck_err(c, _err_type, ...) \ 161 __fsck_err(c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__) 162 163 #define fsck_err_on(cond, c, _err_type, ...) \ 164 __fsck_err_on(cond, c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__) 165 166 __printf(4, 0) 167 static inline void bch2_bkey_fsck_err(struct bch_fs *c, 168 struct printbuf *err_msg, 169 enum bch_sb_error_id err_type, 170 const char *fmt, ...) 171 { 172 va_list args; 173 174 va_start(args, fmt); 175 prt_vprintf(err_msg, fmt, args); 176 va_end(args); 177 } 178 179 #define bkey_fsck_err(c, _err_msg, _err_type, ...) \ 180 do { \ 181 prt_printf(_err_msg, __VA_ARGS__); \ 182 bch2_sb_error_count(c, BCH_FSCK_ERR_##_err_type); \ 183 ret = -BCH_ERR_invalid_bkey; \ 184 goto fsck_err; \ 185 } while (0) 186 187 #define bkey_fsck_err_on(cond, ...) \ 188 do { \ 189 if (unlikely(cond)) \ 190 bkey_fsck_err(__VA_ARGS__); \ 191 } while (0) 192 193 /* 194 * Fatal errors: these don't indicate a bug, but we can't continue running in RW 195 * mode - pretty much just due to metadata IO errors: 196 */ 197 198 void bch2_fatal_error(struct bch_fs *); 199 200 #define bch2_fs_fatal_error(c, _msg, ...) \ 201 do { \ 202 bch_err(c, "%s(): fatal error " _msg, __func__, ##__VA_ARGS__); \ 203 bch2_fatal_error(c); \ 204 } while (0) 205 206 #define bch2_fs_fatal_err_on(cond, c, ...) \ 207 ({ \ 208 bool _ret = unlikely(!!(cond)); \ 209 \ 210 if (_ret) \ 211 bch2_fs_fatal_error(c, __VA_ARGS__); \ 212 _ret; \ 213 }) 214 215 /* 216 * IO errors: either recoverable metadata IO (because we have replicas), or data 217 * IO - we need to log it and print out a message, but we don't (necessarily) 218 * want to shut down the fs: 219 */ 220 221 void bch2_io_error_work(struct work_struct *); 222 223 /* Does the error handling without logging a message */ 224 void bch2_io_error(struct bch_dev *, enum bch_member_error_type); 225 226 #define bch2_dev_io_err_on(cond, ca, _type, ...) \ 227 ({ \ 228 bool _ret = (cond); \ 229 \ 230 if (_ret) { \ 231 bch_err_dev_ratelimited(ca, __VA_ARGS__); \ 232 bch2_io_error(ca, _type); \ 233 } \ 234 _ret; \ 235 }) 236 237 #define bch2_dev_inum_io_err_on(cond, ca, _type, ...) \ 238 ({ \ 239 bool _ret = (cond); \ 240 \ 241 if (_ret) { \ 242 bch_err_inum_offset_ratelimited(ca, __VA_ARGS__); \ 243 bch2_io_error(ca, _type); \ 244 } \ 245 _ret; \ 246 }) 247 248 #endif /* _BCACHEFS_ERROR_H */ 249