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[084/115] xfs: teach online scrub to find directory tree structure problems

Message ID 172229843637.1338752.16678515437880585817.stgit@frogsfrogsfrogs (mailing list archive)
State Accepted, archived
Headers show
Series [001/115] xfs: pass xfs_buf lookup flags to xfs_*read_agi | expand

Commit Message

Darrick J. Wong July 30, 2024, 12:45 a.m. UTC 
From: Darrick J. Wong <djwong@kernel.org>

Source kernel commit: 928b721a11789a9363d6d7c32a1f3166a79f3b5f

Create a new scrubber that detects corruptions within the directory tree
structure itself.  It can detect directories with multiple parents;
loops within the directory tree; and directory loops not accessible from
the root.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 libxfs/xfs_fs.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index dd13bfa50..85f2a7e20 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -719,9 +719,10 @@  struct xfs_scrub_metadata {
 #define XFS_SCRUB_TYPE_QUOTACHECK 25	/* quota counters */
 #define XFS_SCRUB_TYPE_NLINKS	26	/* inode link counts */
 #define XFS_SCRUB_TYPE_HEALTHY	27	/* everything checked out ok */
+#define XFS_SCRUB_TYPE_DIRTREE	28	/* directory tree structure */
 
 /* Number of scrub subcommands. */
-#define XFS_SCRUB_TYPE_NR	28
+#define XFS_SCRUB_TYPE_NR	29
 
 /* i: Repair this metadata. */
 #define XFS_SCRUB_IFLAG_REPAIR		(1u << 0)