From: Darrick J. Wong <darrick.wong@oracle.com>
Date: Fri, 17 Nov 2017 04:11:32 +0000 (-0600)
Subject: xfs: scrub the secondary superblocks
X-Git-Tag: v4.15.0-rc1~143^2~68
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f253a9796b492c6b2095ed18ea6a9540a8f30d9b;p=thirdparty%2Fxfsprogs-dev.git

xfs: scrub the secondary superblocks

Source kernel commit: 21fb4cb1981ef7e02f35a42b2a5ae619517dfe1b

Ensure that the geometry presented in the backup superblocks matches
the primary superblock so that repair can recover the filesystem if
that primary gets corrupted.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
---

diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index cff4358d9..3fe66c23b 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -505,9 +505,10 @@ struct xfs_scrub_metadata {
 
 /* Scrub subcommands. */
 #define XFS_SCRUB_TYPE_PROBE	0	/* presence test ioctl */
+#define XFS_SCRUB_TYPE_SB	1	/* superblock */
 
 /* Number of scrub subcommands. */
-#define XFS_SCRUB_TYPE_NR	1
+#define XFS_SCRUB_TYPE_NR	2
 
 /* i: Repair this metadata. */
 #define XFS_SCRUB_IFLAG_REPAIR		(1 << 0)