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 "bkey_types.h" 8 #include "sb-errors.h" 9 10 struct bch_dev; 11 struct bch_fs; 12 struct work_struct; 13 14 /* 15 * XXX: separate out errors that indicate on disk data is inconsistent, and flag 16 * superblock as such 17 */ 18 19 /* Error messages: */ 20 21 /* 22 * Inconsistency errors: The on disk data is inconsistent. If these occur during 23 * initial recovery, they don't indicate a bug in the running code - we walk all 24 * the metadata before modifying anything. If they occur at runtime, they 25 * indicate either a bug in the running code or (less likely) data is being 26 * silently corrupted under us. 27 * 28 * XXX: audit all inconsistent errors and make sure they're all recoverable, in 29 * BCH_ON_ERROR_CONTINUE mode 30 */ 31 32 bool bch2_inconsistent_error(struct bch_fs *); 33 34 int bch2_topology_error(struct bch_fs *); 35 36 #define bch2_fs_topology_error(c, ...) \ 37 ({ \ 38 bch_err(c, "btree topology error: " __VA_ARGS__); \ 39 bch2_topology_error(c); \ 40 }) 41 42 #define bch2_fs_inconsistent(c, ...) \ 43 ({ \ 44 bch_err(c, __VA_ARGS__); \ 45 bch2_inconsistent_error(c); \ 46 }) 47 48 #define bch2_fs_inconsistent_on(cond, ...) \ 49 ({ \ 50 bool _ret = unlikely(!!(cond)); \ 51 if (_ret) \ 52 bch2_fs_inconsistent(__VA_ARGS__); \ 53 _ret; \ 54 }) 55 56 /* 57 * When a transaction update discovers or is causing a fs inconsistency, it's 58 * helpful to also dump the pending updates: 59 */ 60 #define bch2_trans_inconsistent(trans, ...) \ 61 ({ \ 62 bch_err(trans->c, __VA_ARGS__); \ 63 bch2_dump_trans_updates(trans); \ 64 bch2_inconsistent_error(trans->c); \ 65 }) 66 67 #define bch2_trans_inconsistent_on(cond, trans, ...) \ 68 ({ \ 69 bool _ret = unlikely(!!(cond)); \ 70 \ 71 if (_ret) \ 72 bch2_trans_inconsistent(trans, __VA_ARGS__); \ 73 _ret; \ 74 }) 75 76 /* 77 * Fsck errors: inconsistency errors we detect at mount time, and should ideally 78 * be able to repair: 79 */ 80 81 struct fsck_err_state { 82 struct list_head list; 83 const char *fmt; 84 u64 nr; 85 bool ratelimited; 86 int ret; 87 int fix; 88 char *last_msg; 89 }; 90 91 #define fsck_err_count(_c, _err) bch2_sb_err_count(_c, BCH_FSCK_ERR_##_err) 92 93 __printf(5, 6) __cold 94 int __bch2_fsck_err(struct bch_fs *, struct btree_trans *, 95 enum bch_fsck_flags, 96 enum bch_sb_error_id, 97 const char *, ...); 98 #define bch2_fsck_err(c, _flags, _err_type, ...) \ 99 __bch2_fsck_err(type_is(c, struct bch_fs *) ? (struct bch_fs *) c : NULL,\ 100 type_is(c, struct btree_trans *) ? (struct btree_trans *) c : NULL,\ 101 _flags, BCH_FSCK_ERR_##_err_type, __VA_ARGS__) 102 103 void bch2_flush_fsck_errs(struct bch_fs *); 104 105 #define fsck_err_wrap(_do) \ 106 ({ \ 107 int _ret = _do; \ 108 if (_ret != -BCH_ERR_fsck_fix && \ 109 _ret != -BCH_ERR_fsck_ignore) { \ 110 ret = _ret; \ 111 goto fsck_err; \ 112 } \ 113 \ 114 _ret == -BCH_ERR_fsck_fix; \ 115 }) 116 117 #define __fsck_err(...) fsck_err_wrap(bch2_fsck_err(__VA_ARGS__)) 118 119 /* These macros return true if error should be fixed: */ 120 121 /* XXX: mark in superblock that filesystem contains errors, if we ignore: */ 122 123 #define __fsck_err_on(cond, c, _flags, _err_type, ...) \ 124 ({ \ 125 might_sleep(); \ 126 \ 127 if (type_is(c, struct bch_fs *)) \ 128 WARN_ON(bch2_current_has_btree_trans((struct bch_fs *) c));\ 129 \ 130 (unlikely(cond) ? __fsck_err(c, _flags, _err_type, __VA_ARGS__) : false);\ 131 }) 132 133 #define mustfix_fsck_err(c, _err_type, ...) \ 134 __fsck_err(c, FSCK_CAN_FIX, _err_type, __VA_ARGS__) 135 136 #define mustfix_fsck_err_on(cond, c, _err_type, ...) \ 137 __fsck_err_on(cond, c, FSCK_CAN_FIX, _err_type, __VA_ARGS__) 138 139 #define fsck_err(c, _err_type, ...) \ 140 __fsck_err(c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__) 141 142 #define fsck_err_on(cond, c, _err_type, ...) \ 143 __fsck_err_on(cond, c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, _err_type, __VA_ARGS__) 144 145 #define log_fsck_err(c, _err_type, ...) \ 146 __fsck_err(c, FSCK_CAN_IGNORE, _err_type, __VA_ARGS__) 147 148 #define log_fsck_err_on(cond, ...) \ 149 ({ \ 150 bool _ret = unlikely(!!(cond)); \ 151 if (_ret) \ 152 log_fsck_err(__VA_ARGS__); \ 153 _ret; \ 154 }) 155 156 enum bch_validate_flags; 157 __printf(5, 6) 158 int __bch2_bkey_fsck_err(struct bch_fs *, 159 struct bkey_s_c, 160 struct bkey_validate_context from, 161 enum bch_sb_error_id, 162 const char *, ...); 163 164 /* 165 * for now, bkey fsck errors are always handled by deleting the entire key - 166 * this will change at some point 167 */ 168 #define bkey_fsck_err(c, _err_type, _err_msg, ...) \ 169 do { \ 170 int _ret = __bch2_bkey_fsck_err(c, k, from, \ 171 BCH_FSCK_ERR_##_err_type, \ 172 _err_msg, ##__VA_ARGS__); \ 173 if (_ret != -BCH_ERR_fsck_fix && \ 174 _ret != -BCH_ERR_fsck_ignore) \ 175 ret = _ret; \ 176 ret = -BCH_ERR_fsck_delete_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 int bch2_inum_err_msg_trans(struct btree_trans *, struct printbuf *, subvol_inum); 242 int bch2_inum_offset_err_msg_trans(struct btree_trans *, struct printbuf *, subvol_inum, u64); 243 244 void bch2_inum_err_msg(struct bch_fs *, struct printbuf *, subvol_inum); 245 void bch2_inum_offset_err_msg(struct bch_fs *, struct printbuf *, subvol_inum, u64); 246 247 #endif /* _BCACHEFS_ERROR_H */ 248