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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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Teach online scrub how to check the filesystem summary counters. We use the incore delalloc block counter along with the incore AG headers to compute expected values for fdblocks, icount, and ifree, and then check that the percpu counter is within a certain threshold of the expected value. This is done to avoid having to freeze or otherwise lock the filesystem, which means that we're only checking that the counters are fairly close, not that they're exactly correct. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
146 lines
4.9 KiB
C
146 lines
4.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*/
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#ifndef __XFS_SCRUB_COMMON_H__
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#define __XFS_SCRUB_COMMON_H__
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/*
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* We /could/ terminate a scrub/repair operation early. If we're not
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* in a good place to continue (fatal signal, etc.) then bail out.
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* Note that we're careful not to make any judgements about *error.
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*/
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static inline bool
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xchk_should_terminate(
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struct xfs_scrub *sc,
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int *error)
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{
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if (fatal_signal_pending(current)) {
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if (*error == 0)
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*error = -EAGAIN;
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return true;
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}
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return false;
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}
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int xchk_trans_alloc(struct xfs_scrub *sc, uint resblks);
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bool xchk_process_error(struct xfs_scrub *sc, xfs_agnumber_t agno,
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xfs_agblock_t bno, int *error);
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bool xchk_fblock_process_error(struct xfs_scrub *sc, int whichfork,
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xfs_fileoff_t offset, int *error);
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bool xchk_xref_process_error(struct xfs_scrub *sc,
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xfs_agnumber_t agno, xfs_agblock_t bno, int *error);
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bool xchk_fblock_xref_process_error(struct xfs_scrub *sc,
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int whichfork, xfs_fileoff_t offset, int *error);
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void xchk_block_set_preen(struct xfs_scrub *sc,
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struct xfs_buf *bp);
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void xchk_ino_set_preen(struct xfs_scrub *sc, xfs_ino_t ino);
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void xchk_set_corrupt(struct xfs_scrub *sc);
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void xchk_block_set_corrupt(struct xfs_scrub *sc,
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struct xfs_buf *bp);
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void xchk_ino_set_corrupt(struct xfs_scrub *sc, xfs_ino_t ino);
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void xchk_fblock_set_corrupt(struct xfs_scrub *sc, int whichfork,
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xfs_fileoff_t offset);
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void xchk_block_xref_set_corrupt(struct xfs_scrub *sc,
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struct xfs_buf *bp);
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void xchk_ino_xref_set_corrupt(struct xfs_scrub *sc,
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xfs_ino_t ino);
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void xchk_fblock_xref_set_corrupt(struct xfs_scrub *sc,
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int whichfork, xfs_fileoff_t offset);
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void xchk_ino_set_warning(struct xfs_scrub *sc, xfs_ino_t ino);
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void xchk_fblock_set_warning(struct xfs_scrub *sc, int whichfork,
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xfs_fileoff_t offset);
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void xchk_set_incomplete(struct xfs_scrub *sc);
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int xchk_checkpoint_log(struct xfs_mount *mp);
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/* Are we set up for a cross-referencing check? */
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bool xchk_should_check_xref(struct xfs_scrub *sc, int *error,
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struct xfs_btree_cur **curpp);
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/* Setup functions */
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int xchk_setup_fs(struct xfs_scrub *sc, struct xfs_inode *ip);
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int xchk_setup_ag_allocbt(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_ag_iallocbt(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_ag_rmapbt(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_ag_refcountbt(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_inode(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_inode_bmap(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_inode_bmap_data(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_directory(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_xattr(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_symlink(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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int xchk_setup_parent(struct xfs_scrub *sc,
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struct xfs_inode *ip);
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#ifdef CONFIG_XFS_RT
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int xchk_setup_rt(struct xfs_scrub *sc, struct xfs_inode *ip);
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#else
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static inline int
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xchk_setup_rt(struct xfs_scrub *sc, struct xfs_inode *ip)
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{
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return -ENOENT;
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}
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#endif
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#ifdef CONFIG_XFS_QUOTA
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int xchk_setup_quota(struct xfs_scrub *sc, struct xfs_inode *ip);
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#else
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static inline int
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xchk_setup_quota(struct xfs_scrub *sc, struct xfs_inode *ip)
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{
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return -ENOENT;
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}
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#endif
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int xchk_setup_fscounters(struct xfs_scrub *sc, struct xfs_inode *ip);
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void xchk_ag_free(struct xfs_scrub *sc, struct xchk_ag *sa);
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int xchk_ag_init(struct xfs_scrub *sc, xfs_agnumber_t agno,
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struct xchk_ag *sa);
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void xchk_perag_get(struct xfs_mount *mp, struct xchk_ag *sa);
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int xchk_ag_read_headers(struct xfs_scrub *sc, xfs_agnumber_t agno,
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struct xfs_buf **agi, struct xfs_buf **agf,
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struct xfs_buf **agfl);
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void xchk_ag_btcur_free(struct xchk_ag *sa);
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int xchk_ag_btcur_init(struct xfs_scrub *sc, struct xchk_ag *sa);
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int xchk_count_rmap_ownedby_ag(struct xfs_scrub *sc, struct xfs_btree_cur *cur,
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const struct xfs_owner_info *oinfo, xfs_filblks_t *blocks);
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int xchk_setup_ag_btree(struct xfs_scrub *sc, struct xfs_inode *ip,
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bool force_log);
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int xchk_get_inode(struct xfs_scrub *sc, struct xfs_inode *ip_in);
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int xchk_setup_inode_contents(struct xfs_scrub *sc, struct xfs_inode *ip,
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unsigned int resblks);
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void xchk_buffer_recheck(struct xfs_scrub *sc, struct xfs_buf *bp);
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/*
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* Don't bother cross-referencing if we already found corruption or cross
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* referencing discrepancies.
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*/
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static inline bool xchk_skip_xref(struct xfs_scrub_metadata *sm)
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{
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return sm->sm_flags & (XFS_SCRUB_OFLAG_CORRUPT |
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XFS_SCRUB_OFLAG_XCORRUPT);
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}
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int xchk_metadata_inode_forks(struct xfs_scrub *sc);
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int xchk_ilock_inverted(struct xfs_inode *ip, uint lock_mode);
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void xchk_stop_reaping(struct xfs_scrub *sc);
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void xchk_start_reaping(struct xfs_scrub *sc);
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#endif /* __XFS_SCRUB_COMMON_H__ */
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