xfs: define a new "needrepair" feature
Define an incompat feature flag to indicate that the filesystem needs to
be repaired. While libxfs will recognize this feature, the kernel will
refuse to mount if the feature flag is set, and only xfs_repair will be
able to clear the flag. The goal here is to force the admin to run
xfs_repair to completion after upgrading the filesystem, or if we
otherwise detect anomalies.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 599566c1a..36002f4 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1467,6 +1467,13 @@ xfs_fc_fill_super(
#endif
}
+ /* Filesystem claims it needs repair, so refuse the mount. */
+ if (xfs_sb_version_needsrepair(&mp->m_sb)) {
+ xfs_warn(mp, "Filesystem needs repair. Please run xfs_repair.");
+ error = -EFSCORRUPTED;
+ goto out_free_sb;
+ }
+
/*
* Don't touch the filesystem if a user tool thinks it owns the primary
* superblock. mkfs doesn't clear the flag from secondary supers, so
