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 #define fsck_err_count(_c, _err) bch2_sb_err_count(_c, BCH_FSCK_ERR_##_err) 112 113 __printf(4, 5) __cold 114 int bch2_fsck_err(struct bch_fs *, 115 enum bch_fsck_flags, 116 enum bch_sb_error_id, 117 const char *, ...); 118 void bch2_flush_fsck_errs(struct bch_fs *); 119 120 #define __fsck_err(c, _flags, _err_type, ...) \ 121 ({ \ 122 int _ret = bch2_fsck_err(c, _flags, BCH_FSCK_ERR_##_err_type, \ 123 __VA_ARGS__); \ 124 \ 125 if (_ret != -BCH_ERR_fsck_fix && \ 126 _ret != -BCH_ERR_fsck_ignore) { \ 127 ret = _ret; \ 128 goto fsck_err; \ 129 } \ 130 \ 131 _ret == -BCH_ERR_fsck_fix; \ 132 }) 133 134 /* These macros return true if error should be fixed: */ 135 136 /* XXX: mark in superblock that filesystem contains errors, if we ignore: */ 137 138 #define __fsck_err_on(cond, c, _flags, _err_type, ...) \ 139 (unlikely(cond) ? __fsck_err(c, _flags, _err_type, __VA_ARGS__) : false) 140 141 #define need_fsck_err_on(cond, c, _err_type, ...) \ 142 __fsck_err_on(cond, c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, _err_type, __VA_ARGS__) 143 144 #define need_fsck_err(c, _err_type, ...) \ 145 __fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, _err_type, __VA_ARGS__) 146 147 #define mustfix_fsck_err(c, _err_type, ...) \ 148 __fsck_err(c, FSCK_CAN_FIX, _err_type, __VA_ARGS__) 149 150 #define mustfix_fsck_err_on(cond, c, _err_type, ...) \ 151 __fsck_err_on(cond, c, FSCK_CAN_FIX, _err_type, __VA_ARGS__) 152 153 #define fsck_err(c, _err_type, ...) \ 154 __fsck_err(c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__) 155 156 #define fsck_err_on(cond, c, _err_type, ...) \ 157 __fsck_err_on(cond, c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__) 158 159 __printf(4, 0) 160 static inline void bch2_bkey_fsck_err(struct bch_fs *c, 161 struct printbuf *err_msg, 162 enum bch_sb_error_id err_type, 163 const char *fmt, ...) 164 { 165 va_list args; 166 167 va_start(args, fmt); 168 prt_vprintf(err_msg, fmt, args); 169 va_end(args); 170 } 171 172 #define bkey_fsck_err(c, _err_msg, _err_type, ...) \ 173 do { \ 174 prt_printf(_err_msg, __VA_ARGS__); \ 175 bch2_sb_error_count(c, BCH_FSCK_ERR_##_err_type); \ 176 ret = -BCH_ERR_invalid_bkey; \ 177 goto fsck_err; \ 178 } while (0) 179 180 #define bkey_fsck_err_on(cond, ...) \ 181 do { \ 182 if (unlikely(cond)) \ 183 bkey_fsck_err(__VA_ARGS__); \ 184 } while (0) 185 186 /* 187 * Fatal errors: these don't indicate a bug, but we can't continue running in RW 188 * mode - pretty much just due to metadata IO errors: 189 */ 190 191 void bch2_fatal_error(struct bch_fs *); 192 193 #define bch2_fs_fatal_error(c, _msg, ...) \ 194 do { \ 195 bch_err(c, "%s(): fatal error " _msg, __func__, ##__VA_ARGS__); \ 196 bch2_fatal_error(c); \ 197 } while (0) 198 199 #define bch2_fs_fatal_err_on(cond, c, ...) \ 200 ({ \ 201 bool _ret = unlikely(!!(cond)); \ 202 \ 203 if (_ret) \ 204 bch2_fs_fatal_error(c, __VA_ARGS__); \ 205 _ret; \ 206 }) 207 208 /* 209 * IO errors: either recoverable metadata IO (because we have replicas), or data 210 * IO - we need to log it and print out a message, but we don't (necessarily) 211 * want to shut down the fs: 212 */ 213 214 void bch2_io_error_work(struct work_struct *); 215 216 /* Does the error handling without logging a message */ 217 void bch2_io_error(struct bch_dev *, enum bch_member_error_type); 218 219 #define bch2_dev_io_err_on(cond, ca, _type, ...) \ 220 ({ \ 221 bool _ret = (cond); \ 222 \ 223 if (_ret) { \ 224 bch_err_dev_ratelimited(ca, __VA_ARGS__); \ 225 bch2_io_error(ca, _type); \ 226 } \ 227 _ret; \ 228 }) 229 230 #define bch2_dev_inum_io_err_on(cond, ca, _type, ...) \ 231 ({ \ 232 bool _ret = (cond); \ 233 \ 234 if (_ret) { \ 235 bch_err_inum_offset_ratelimited(ca, __VA_ARGS__); \ 236 bch2_io_error(ca, _type); \ 237 } \ 238 _ret; \ 239 }) 240 241 #endif /* _BCACHEFS_ERROR_H */ 242