diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-16 18:52:14 -0800 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2018-01-17 21:00:44 -0800 |
| commit | 64b12563b2b5abf78ebd9d4b3c2e4062d9aedc61 (patch) | |
| tree | ae9f44d227001f259e2e10184adca4f56851360c /fs/xfs/scrub/scrub.c | |
| parent | 49db55eca5665e32c9d3e67a7d5694bcc6c274de (diff) | |
xfs: set up scrub cross-referencing helpers
Create some helper functions that we'll use later to deal with problems
we might encounter while cross referencing metadata with other metadata.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/scrub/scrub.c')
| -rw-r--r-- | fs/xfs/scrub/scrub.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/xfs/scrub/scrub.c b/fs/xfs/scrub/scrub.c index cd4607782a19..0ed2a123cbb8 100644 --- a/fs/xfs/scrub/scrub.c +++ b/fs/xfs/scrub/scrub.c @@ -110,6 +110,16 @@ * structure itself is corrupt, the CORRUPT flag will be set. If * the metadata is correct but otherwise suboptimal, the PREEN flag * will be set. + * + * We perform secondary validation of filesystem metadata by + * cross-referencing every record with all other available metadata. + * For example, for block mapping extents, we verify that there are no + * records in the free space and inode btrees corresponding to that + * space extent and that there is a corresponding entry in the reverse + * mapping btree. Inconsistent metadata is noted by setting the + * XCORRUPT flag; btree query function errors are noted by setting the + * XFAIL flag and deleting the cursor to prevent further attempts to + * cross-reference with a defective btree. */ /* |