Create an ioctl that can be used to scrub internal filesystem
metadata. The new ioctl takes the metadata type, an (optional)
AG number, and a flags argument. This will be used by the
upcoming XFS online scrub tool.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
libxfs/xfs_fs.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index 11149fa..6cb3cff 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -548,6 +548,21 @@ typedef struct xfs_swapext
#define XFS_FSOP_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */
#define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */
+/* metadata scrubbing */
+struct xfs_scrub_metadata {
+ __u32 type; /* What to check? */
+ __u32 flags; /* Flags; none defined right now. */
+ __u64 control; /* AG or inode number */
+ __u64 reserved[6]; /* Must be zero. */
+};
+
+/*
+ * Metadata types and flags for scrub operation.
+ */
+#define XFS_SCRUB_TYPE_MAX 0
+
+#define XFS_SCRUB_FLAGS_ALL 0x0 /* no flags yet */
+
/*
* ioctl limits
*/
@@ -588,6 +603,7 @@ typedef struct xfs_swapext
#define XFS_IOC_ZERO_RANGE _IOW ('X', 57, struct xfs_flock64)
#define XFS_IOC_FREE_EOFBLOCKS _IOR ('X', 58, struct xfs_fs_eofblocks)
#define XFS_IOC_GETFSMAP _IOWR('X', 59, struct getfsmap)
+#define XFS_IOC_SCRUB_METADATA _IOR ('X', 60, struct xfs_scrub_metadata)
/*
* ioctl commands that replace IRIX syssgi()'s
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