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xfs: cross-reference rmap records with inode btrees

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Strengthen the rmap btree record checker a little more by comparing
OWN_INOBT reverse mappings against the inode btrees.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2023-04-11 19:00:39 -07:00
parent 3a3108ea8c
commit 0abe6fc53b
1 changed files with 35 additions and 0 deletions
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35
fs/xfs/scrub/rmap.c
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@ -18,6 +18,7 @@
#include "xfs_bit.h"
#include "xfs_alloc.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
#include "scrub/scrub.h"
#include "scrub/common.h"
#include "scrub/btree.h"
@ -56,6 +57,7 @@ struct xchk_rmap {
struct xagb_bitmap fs_owned;
struct xagb_bitmap log_owned;
struct xagb_bitmap ag_owned;
struct xagb_bitmap inobt_owned;
/* Did we complete the AG space metadata bitmaps? */
bool bitmaps_complete;
@ -299,6 +301,9 @@ xchk_rmapbt_mark_bitmap(
case XFS_RMAP_OWN_AG:
bmp = &cr->ag_owned;
break;
case XFS_RMAP_OWN_INOBT:
bmp = &cr->inobt_owned;
break;
}
if (!bmp)
@ -430,6 +435,31 @@ xchk_rmapbt_walk_ag_metadata(
error = xfs_agfl_walk(sc->mp, agf, agfl_bp, xchk_rmapbt_walk_agfl,
&cr->ag_owned);
xfs_trans_brelse(sc->tp, agfl_bp);
if (error)
goto out;
/* OWN_INOBT: inobt, finobt */
cur = sc->sa.ino_cur;
if (!cur)
cur = xfs_inobt_init_cursor(sc->sa.pag, sc->tp, sc->sa.agi_bp,
XFS_BTNUM_INO);
error = xagb_bitmap_set_btblocks(&cr->inobt_owned, cur);
if (cur != sc->sa.ino_cur)
xfs_btree_del_cursor(cur, error);
if (error)
goto out;
if (xfs_has_finobt(sc->mp)) {
cur = sc->sa.fino_cur;
if (!cur)
cur = xfs_inobt_init_cursor(sc->sa.pag, sc->tp,
sc->sa.agi_bp, XFS_BTNUM_FINO);
error = xagb_bitmap_set_btblocks(&cr->inobt_owned, cur);
if (cur != sc->sa.fino_cur)
xfs_btree_del_cursor(cur, error);
if (error)
goto out;
}
out:
/*
@ -475,6 +505,9 @@ xchk_rmapbt_check_bitmaps(
if (xagb_bitmap_hweight(&cr->ag_owned) != 0)
xchk_btree_xref_set_corrupt(sc, cur, level);
if (xagb_bitmap_hweight(&cr->inobt_owned) != 0)
xchk_btree_xref_set_corrupt(sc, cur, level);
}
/* Scrub the rmap btree for some AG. */
@ -492,6 +525,7 @@ xchk_rmapbt(
xagb_bitmap_init(&cr->fs_owned);
xagb_bitmap_init(&cr->log_owned);
xagb_bitmap_init(&cr->ag_owned);
xagb_bitmap_init(&cr->inobt_owned);
error = xchk_rmapbt_walk_ag_metadata(sc, cr);
if (error)
@ -505,6 +539,7 @@ xchk_rmapbt(
xchk_rmapbt_check_bitmaps(sc, cr);
out:
xagb_bitmap_destroy(&cr->inobt_owned);
xagb_bitmap_destroy(&cr->ag_owned);
xagb_bitmap_destroy(&cr->log_owned);
xagb_bitmap_destroy(&cr->fs_owned);