2017-03-17 06:18:50 +00:00
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_ERROR_H
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#define _BCACHEFS_ERROR_H
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#include <linux/list.h>
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#include <linux/printk.h>
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struct bch_dev;
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struct bch_fs;
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struct work_struct;
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/*
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* XXX: separate out errors that indicate on disk data is inconsistent, and flag
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* superblock as such
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*/
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/* Error messages: */
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/*
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* Inconsistency errors: The on disk data is inconsistent. If these occur during
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* initial recovery, they don't indicate a bug in the running code - we walk all
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* the metadata before modifying anything. If they occur at runtime, they
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* indicate either a bug in the running code or (less likely) data is being
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* silently corrupted under us.
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*
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* XXX: audit all inconsistent errors and make sure they're all recoverable, in
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* BCH_ON_ERROR_CONTINUE mode
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*/
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bool bch2_inconsistent_error(struct bch_fs *);
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#define bch2_fs_inconsistent(c, ...) \
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({ \
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bch_err(c, __VA_ARGS__); \
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bch2_inconsistent_error(c); \
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})
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#define bch2_fs_inconsistent_on(cond, c, ...) \
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({ \
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int _ret = !!(cond); \
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\
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if (_ret) \
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bch2_fs_inconsistent(c, __VA_ARGS__); \
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_ret; \
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})
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/*
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* Later we might want to mark only the particular device inconsistent, not the
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* entire filesystem:
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*/
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#define bch2_dev_inconsistent(ca, ...) \
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do { \
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bch_err(ca, __VA_ARGS__); \
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bch2_inconsistent_error((ca)->fs); \
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} while (0)
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#define bch2_dev_inconsistent_on(cond, ca, ...) \
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({ \
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int _ret = !!(cond); \
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\
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if (_ret) \
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bch2_dev_inconsistent(ca, __VA_ARGS__); \
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_ret; \
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})
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/*
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* Fsck errors: inconsistency errors we detect at mount time, and should ideally
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* be able to repair:
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*/
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enum {
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BCH_FSCK_OK = 0,
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BCH_FSCK_ERRORS_NOT_FIXED = 1,
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BCH_FSCK_REPAIR_UNIMPLEMENTED = 2,
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BCH_FSCK_REPAIR_IMPOSSIBLE = 3,
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BCH_FSCK_UNKNOWN_VERSION = 4,
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};
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enum fsck_err_opts {
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FSCK_OPT_EXIT,
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FSCK_OPT_YES,
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FSCK_OPT_NO,
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FSCK_OPT_ASK,
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};
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enum fsck_err_ret {
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FSCK_ERR_IGNORE = 0,
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FSCK_ERR_FIX = 1,
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FSCK_ERR_EXIT = 2,
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};
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struct fsck_err_state {
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struct list_head list;
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const char *fmt;
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u64 nr;
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2019-11-06 20:32:11 +00:00
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bool ratelimited;
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2017-03-17 06:18:50 +00:00
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char buf[512];
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};
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#define FSCK_CAN_FIX (1 << 0)
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#define FSCK_CAN_IGNORE (1 << 1)
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#define FSCK_NEED_FSCK (1 << 2)
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2020-06-03 22:27:07 +00:00
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__printf(3, 4) __cold
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2017-03-17 06:18:50 +00:00
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enum fsck_err_ret bch2_fsck_err(struct bch_fs *,
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unsigned, const char *, ...);
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void bch2_flush_fsck_errs(struct bch_fs *);
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#define __fsck_err(c, _flags, msg, ...) \
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({ \
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int _fix = bch2_fsck_err(c, _flags, msg, ##__VA_ARGS__);\
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\
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if (_fix == FSCK_ERR_EXIT) { \
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bch_err(c, "Unable to continue, halting"); \
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ret = BCH_FSCK_ERRORS_NOT_FIXED; \
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goto fsck_err; \
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} \
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\
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_fix; \
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})
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/* These macros return true if error should be fixed: */
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/* XXX: mark in superblock that filesystem contains errors, if we ignore: */
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#define __fsck_err_on(cond, c, _flags, ...) \
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((cond) ? __fsck_err(c, _flags, ##__VA_ARGS__) : false)
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#define need_fsck_err_on(cond, c, ...) \
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__fsck_err_on(cond, c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, ##__VA_ARGS__)
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#define need_fsck_err(c, ...) \
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__fsck_err(c, FSCK_CAN_IGNORE|FSCK_NEED_FSCK, ##__VA_ARGS__)
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#define mustfix_fsck_err(c, ...) \
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__fsck_err(c, FSCK_CAN_FIX, ##__VA_ARGS__)
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#define mustfix_fsck_err_on(cond, c, ...) \
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__fsck_err_on(cond, c, FSCK_CAN_FIX, ##__VA_ARGS__)
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#define fsck_err(c, ...) \
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__fsck_err(c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, ##__VA_ARGS__)
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#define fsck_err_on(cond, c, ...) \
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__fsck_err_on(cond, c, FSCK_CAN_FIX|FSCK_CAN_IGNORE, ##__VA_ARGS__)
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/*
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* Fatal errors: these don't indicate a bug, but we can't continue running in RW
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* mode - pretty much just due to metadata IO errors:
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*/
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void bch2_fatal_error(struct bch_fs *);
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#define bch2_fs_fatal_error(c, ...) \
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do { \
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bch_err(c, __VA_ARGS__); \
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bch2_fatal_error(c); \
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} while (0)
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#define bch2_fs_fatal_err_on(cond, c, ...) \
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({ \
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int _ret = !!(cond); \
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\
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if (_ret) \
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bch2_fs_fatal_error(c, __VA_ARGS__); \
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_ret; \
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})
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/*
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* IO errors: either recoverable metadata IO (because we have replicas), or data
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* IO - we need to log it and print out a message, but we don't (necessarily)
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* want to shut down the fs:
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*/
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void bch2_io_error_work(struct work_struct *);
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/* Does the error handling without logging a message */
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void bch2_io_error(struct bch_dev *);
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/* Logs message and handles the error: */
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#define bch2_dev_io_error(ca, fmt, ...) \
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do { \
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printk_ratelimited(KERN_ERR bch2_fmt((ca)->fs, \
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"IO error on %s for " fmt), \
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(ca)->name, ##__VA_ARGS__); \
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bch2_io_error(ca); \
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} while (0)
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#define bch2_dev_io_err_on(cond, ca, ...) \
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({ \
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bool _ret = (cond); \
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\
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if (_ret) \
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bch2_dev_io_error(ca, __VA_ARGS__); \
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_ret; \
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})
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/* kill? */
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#define __bcache_io_error(c, fmt, ...) \
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printk_ratelimited(KERN_ERR bch2_fmt(c, \
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"IO error: " fmt), ##__VA_ARGS__)
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#define bcache_io_error(c, bio, fmt, ...) \
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do { \
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__bcache_io_error(c, fmt, ##__VA_ARGS__); \
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(bio)->bi_status = BLK_STS_IOERR; \
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} while (0)
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#endif /* _BCACHEFS_ERROR_H */
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