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 9struct bch_dev; 10struct bch_fs; 11struct 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 31bool bch2_inconsistent_error(struct bch_fs *); 32 33int 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, ...) \ 62do { \ 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 101struct 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 111enum 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 121int bch2_fsck_err(struct bch_fs *, 122 enum bch_fsck_flags, 123 enum bch_sb_error_id, 124 const char *, ...); 125void 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) 167static 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, ...) \ 180do { \ 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, ...) \ 188do { \ 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 198void bch2_fatal_error(struct bch_fs *); 199 200#define bch2_fs_fatal_error(c, _msg, ...) \ 201do { \ 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 221void bch2_io_error_work(struct work_struct *); 222 223/* Does the error handling without logging a message */ 224void 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