173 lines
4.9 KiB
C
173 lines
4.9 KiB
C
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2017 Oracle. All Rights Reserved.
|
||
|
|
* Author: Darrick J. Wong <darrick.wong@oracle.com>
|
||
|
|
*/
|
||
|
|
#ifndef __XFS_SCRUB_SCRUB_H__
|
||
|
|
#define __XFS_SCRUB_SCRUB_H__
|
||
|
|
|
||
|
|
struct xfs_scrub;
|
||
|
|
|
||
|
|
/* Type info and names for the scrub types. */
|
||
|
|
enum xchk_type {
|
||
|
|
ST_NONE = 1, /* disabled */
|
||
|
|
ST_PERAG, /* per-AG metadata */
|
||
|
|
ST_FS, /* per-FS metadata */
|
||
|
|
ST_INODE, /* per-inode metadata */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct xchk_meta_ops {
|
||
|
|
/* Acquire whatever resources are needed for the operation. */
|
||
|
|
int (*setup)(struct xfs_scrub *sc);
|
||
|
|
|
||
|
|
/* Examine metadata for errors. */
|
||
|
|
int (*scrub)(struct xfs_scrub *);
|
||
|
|
|
||
|
|
/* Repair or optimize the metadata. */
|
||
|
|
int (*repair)(struct xfs_scrub *);
|
||
|
|
|
||
|
|
/* Decide if we even have this piece of metadata. */
|
||
|
|
bool (*has)(struct xfs_mount *);
|
||
|
|
|
||
|
|
/* type describing required/allowed inputs */
|
||
|
|
enum xchk_type type;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Buffer pointers and btree cursors for an entire AG. */
|
||
|
|
struct xchk_ag {
|
||
|
|
struct xfs_perag *pag;
|
||
|
|
|
||
|
|
/* AG btree roots */
|
||
|
|
struct xfs_buf *agf_bp;
|
||
|
|
struct xfs_buf *agfl_bp;
|
||
|
|
struct xfs_buf *agi_bp;
|
||
|
|
|
||
|
|
/* AG btrees */
|
||
|
|
struct xfs_btree_cur *bno_cur;
|
||
|
|
struct xfs_btree_cur *cnt_cur;
|
||
|
|
struct xfs_btree_cur *ino_cur;
|
||
|
|
struct xfs_btree_cur *fino_cur;
|
||
|
|
struct xfs_btree_cur *rmap_cur;
|
||
|
|
struct xfs_btree_cur *refc_cur;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct xfs_scrub {
|
||
|
|
/* General scrub state. */
|
||
|
|
struct xfs_mount *mp;
|
||
|
|
struct xfs_scrub_metadata *sm;
|
||
|
|
const struct xchk_meta_ops *ops;
|
||
|
|
struct xfs_trans *tp;
|
||
|
|
|
||
|
|
/* File that scrub was called with. */
|
||
|
|
struct file *file;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* File that is undergoing the scrub operation. This can differ from
|
||
|
|
* the file that scrub was called with if we're checking file-based fs
|
||
|
|
* metadata (e.g. rt bitmaps) or if we're doing a scrub-by-handle for
|
||
|
|
* something that can't be opened directly (e.g. symlinks).
|
||
|
|
*/
|
||
|
|
struct xfs_inode *ip;
|
||
|
|
|
||
|
|
void *buf;
|
||
|
|
uint ilock_flags;
|
||
|
|
|
||
|
|
/* See the XCHK/XREP state flags below. */
|
||
|
|
unsigned int flags;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The XFS_SICK_* flags that correspond to the metadata being scrubbed
|
||
|
|
* or repaired. We will use this mask to update the in-core fs health
|
||
|
|
* status with whatever we find.
|
||
|
|
*/
|
||
|
|
unsigned int sick_mask;
|
||
|
|
|
||
|
|
/* State tracking for single-AG operations. */
|
||
|
|
struct xchk_ag sa;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* XCHK state flags grow up from zero, XREP state flags grown down from 2^31 */
|
||
|
|
#define XCHK_TRY_HARDER (1 << 0) /* can't get resources, try again */
|
||
|
|
#define XCHK_REAPING_DISABLED (1 << 2) /* background block reaping paused */
|
||
|
|
#define XREP_ALREADY_FIXED (1 << 31) /* checking our repair work */
|
||
|
|
|
||
|
|
/* Metadata scrubbers */
|
||
|
|
int xchk_tester(struct xfs_scrub *sc);
|
||
|
|
int xchk_superblock(struct xfs_scrub *sc);
|
||
|
|
int xchk_agf(struct xfs_scrub *sc);
|
||
|
|
int xchk_agfl(struct xfs_scrub *sc);
|
||
|
|
int xchk_agi(struct xfs_scrub *sc);
|
||
|
|
int xchk_bnobt(struct xfs_scrub *sc);
|
||
|
|
int xchk_cntbt(struct xfs_scrub *sc);
|
||
|
|
int xchk_inobt(struct xfs_scrub *sc);
|
||
|
|
int xchk_finobt(struct xfs_scrub *sc);
|
||
|
|
int xchk_rmapbt(struct xfs_scrub *sc);
|
||
|
|
int xchk_refcountbt(struct xfs_scrub *sc);
|
||
|
|
int xchk_inode(struct xfs_scrub *sc);
|
||
|
|
int xchk_bmap_data(struct xfs_scrub *sc);
|
||
|
|
int xchk_bmap_attr(struct xfs_scrub *sc);
|
||
|
|
int xchk_bmap_cow(struct xfs_scrub *sc);
|
||
|
|
int xchk_directory(struct xfs_scrub *sc);
|
||
|
|
int xchk_xattr(struct xfs_scrub *sc);
|
||
|
|
int xchk_symlink(struct xfs_scrub *sc);
|
||
|
|
int xchk_parent(struct xfs_scrub *sc);
|
||
|
|
#ifdef CONFIG_XFS_RT
|
||
|
|
int xchk_rtbitmap(struct xfs_scrub *sc);
|
||
|
|
int xchk_rtsummary(struct xfs_scrub *sc);
|
||
|
|
#else
|
||
|
|
static inline int
|
||
|
|
xchk_rtbitmap(struct xfs_scrub *sc)
|
||
|
|
{
|
||
|
|
return -ENOENT;
|
||
|
|
}
|
||
|
|
static inline int
|
||
|
|
xchk_rtsummary(struct xfs_scrub *sc)
|
||
|
|
{
|
||
|
|
return -ENOENT;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#ifdef CONFIG_XFS_QUOTA
|
||
|
|
int xchk_quota(struct xfs_scrub *sc);
|
||
|
|
#else
|
||
|
|
static inline int
|
||
|
|
xchk_quota(struct xfs_scrub *sc)
|
||
|
|
{
|
||
|
|
return -ENOENT;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
int xchk_fscounters(struct xfs_scrub *sc);
|
||
|
|
|
||
|
|
/* cross-referencing helpers */
|
||
|
|
void xchk_xref_is_used_space(struct xfs_scrub *sc, xfs_agblock_t agbno,
|
||
|
|
xfs_extlen_t len);
|
||
|
|
void xchk_xref_is_not_inode_chunk(struct xfs_scrub *sc, xfs_agblock_t agbno,
|
||
|
|
xfs_extlen_t len);
|
||
|
|
void xchk_xref_is_inode_chunk(struct xfs_scrub *sc, xfs_agblock_t agbno,
|
||
|
|
xfs_extlen_t len);
|
||
|
|
void xchk_xref_is_owned_by(struct xfs_scrub *sc, xfs_agblock_t agbno,
|
||
|
|
xfs_extlen_t len, const struct xfs_owner_info *oinfo);
|
||
|
|
void xchk_xref_is_not_owned_by(struct xfs_scrub *sc, xfs_agblock_t agbno,
|
||
|
|
xfs_extlen_t len, const struct xfs_owner_info *oinfo);
|
||
|
|
void xchk_xref_has_no_owner(struct xfs_scrub *sc, xfs_agblock_t agbno,
|
||
|
|
xfs_extlen_t len);
|
||
|
|
void xchk_xref_is_cow_staging(struct xfs_scrub *sc, xfs_agblock_t bno,
|
||
|
|
xfs_extlen_t len);
|
||
|
|
void xchk_xref_is_not_shared(struct xfs_scrub *sc, xfs_agblock_t bno,
|
||
|
|
xfs_extlen_t len);
|
||
|
|
#ifdef CONFIG_XFS_RT
|
||
|
|
void xchk_xref_is_used_rt_space(struct xfs_scrub *sc, xfs_rtblock_t rtbno,
|
||
|
|
xfs_extlen_t len);
|
||
|
|
#else
|
||
|
|
# define xchk_xref_is_used_rt_space(sc, rtbno, len) do { } while (0)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
struct xchk_fscounters {
|
||
|
|
uint64_t icount;
|
||
|
|
uint64_t ifree;
|
||
|
|
uint64_t fdblocks;
|
||
|
|
unsigned long long icount_min;
|
||
|
|
unsigned long long icount_max;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* __XFS_SCRUB_SCRUB_H__ */
|