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xfs: don't check agf_btreeblks on pre-lazysbcount filesystems 

The AGF free space btree block counter wasn't added until the
lazysbcount feature was added to XFS midway through the life of the V4
format, so ignore the field when checking.  Online AGF repair requires
rmapbt, so it doesn't need the feature check.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2021-04-23 16:02:01 -07:00
parent 1aec7c3d05
commit e6c01077ec
2 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
fs/xfs/scrub/agheader.c
View File

@ -416,6 +416,10 @@ xchk_agf_xref_btreeblks(
xfs_agblock_t btreeblks;
int error;
/* agf_btreeblks didn't exist before lazysbcount */
if (!xfs_sb_version_haslazysbcount(&sc->mp->m_sb))
return;
/* Check agf_rmap_blocks; set up for agf_btreeblks check */
if (sc->sa.rmap_cur) {
error = xfs_btree_count_blocks(sc->sa.rmap_cur, &blocks);
@ -581,7 +585,8 @@ xchk_agf(
xchk_block_set_corrupt(sc, sc->sa.agf_bp);
if (pag->pagf_flcount != be32_to_cpu(agf->agf_flcount))
xchk_block_set_corrupt(sc, sc->sa.agf_bp);
if (pag->pagf_btreeblks != be32_to_cpu(agf->agf_btreeblks))
if (xfs_sb_version_haslazysbcount(&sc->mp->m_sb) &&
pag->pagf_btreeblks != be32_to_cpu(agf->agf_btreeblks))
xchk_block_set_corrupt(sc, sc->sa.agf_bp);
xfs_perag_put(pag);

3
fs/xfs/scrub/fscounters.c
View File

@ -182,7 +182,8 @@ retry:
/* Add up the free/freelist/bnobt/cntbt blocks */
fsc->fdblocks += pag->pagf_freeblks;
fsc->fdblocks += pag->pagf_flcount;
fsc->fdblocks += pag->pagf_btreeblks;
if (xfs_sb_version_haslazysbcount(&sc->mp->m_sb))
fsc->fdblocks += pag->pagf_btreeblks;
/*
* Per-AG reservations are taken out of the incore counters,