diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-04 13:58:29 -0600 |
|---|---|---|
| committer | Eric Sandeen <sandeen@redhat.com> | 2018-01-04 13:58:29 -0600 |
| commit | b638281fee0bf4edc6328629eddc60e47bef153c (patch) | |
| tree | ea157c5dd81a61a5ba3a001544adadbad2acb6b3 | |
| parent | 1ad4d3babd3e832f2c638c68da00de9947fb116c (diff) | |
| download | xfsprogs-dev-b638281fee0bf4edc6328629eddc60e47bef153c.tar.gz | |
xfs_db: check should deal with cow staging extents correctly
Teach xfs_check to record cow staging extents correctly. This means that
we strip off the high bit before using startblock.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
| -rw-r--r-- | db/check.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/db/check.c b/db/check.c index 3afde02845..2f8dee583e 100644 --- a/db/check.c +++ b/db/check.c @@ -4730,13 +4730,24 @@ scanfunc_refcnt( lastblock = 0; for (i = 0; i < be16_to_cpu(block->bb_numrecs); i++) { if (be32_to_cpu(rp[i].rc_refcount) == 1) { - dbprintf(_( - "leftover CoW extent (%u/%u) len %u\n"), + xfs_agblock_t agbno; + char *msg; + + agbno = be32_to_cpu(rp[i].rc_startblock); + if (agbno >= XFS_REFC_COW_START) { + agbno -= XFS_REFC_COW_START; + msg = _( + "leftover CoW extent (%u/%u) len %u\n"); + } else { + msg = _( + "leftover CoW extent at unexpected address (%u/%u) len %u\n"); + } + dbprintf(msg, seqno, - be32_to_cpu(rp[i].rc_startblock), + agbno, be32_to_cpu(rp[i].rc_blockcount)); set_dbmap(seqno, - be32_to_cpu(rp[i].rc_startblock), + agbno, be32_to_cpu(rp[i].rc_blockcount), DBM_COWDATA, seqno, bno); } else { |