From: Darrick J. Wong <djwong@xxxxxxxxxx>
Add a new (superuser-only) flag to the online metadata repair ioctl to
force it to rebuild structures, even if they're not broken. We will use
this to move metadata structures out of the way during a free space
defragmentation operation.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
libxfs/xfs_fs.h | 6 +++++-
man/man2/ioctl_xfs_scrub_metadata.2 | 5 +++++
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index 1cfd5bc6520..920fd4513fc 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -741,7 +741,11 @@ struct xfs_scrub_metadata {
*/
#define XFS_SCRUB_OFLAG_NO_REPAIR_NEEDED (1u << 7)
-#define XFS_SCRUB_FLAGS_IN (XFS_SCRUB_IFLAG_REPAIR)
+/* i: Rebuild the data structure. */
+#define XFS_SCRUB_IFLAG_FORCE_REBUILD (1 << 31)
+
+#define XFS_SCRUB_FLAGS_IN (XFS_SCRUB_IFLAG_REPAIR | \
+ XFS_SCRUB_IFLAG_FORCE_REBUILD)
#define XFS_SCRUB_FLAGS_OUT (XFS_SCRUB_OFLAG_CORRUPT | \
XFS_SCRUB_OFLAG_PREEN | \
XFS_SCRUB_OFLAG_XFAIL | \
diff --git a/man/man2/ioctl_xfs_scrub_metadata.2 b/man/man2/ioctl_xfs_scrub_metadata.2
index 046e3e3657b..42bf1e1cac5 100644
--- a/man/man2/ioctl_xfs_scrub_metadata.2
+++ b/man/man2/ioctl_xfs_scrub_metadata.2
@@ -216,6 +216,11 @@ The checker was unable to complete its check of all records.
The checker encountered a metadata object with potentially problematic
records.
However, the records were not obviously corrupt.
+.TP
+.B XFS_SCRUB_IFLAG_FORCE_REBUILD
+Force the kernel to rebuild the specified piece of metadata, even if it's
+healthy.
+This can only be specified by the system administrator.
.RE
.PP
For metadata checkers that operate on inodes or inode metadata, the fields
