[PATCH 05/51] libfrog: scrub the realtime group superblock

["Darrick J. Wong" <djwong@xxxxxxxxxx>]

From: Darrick J. Wong <djwong@xxxxxxxxxx>

Enable scrubbing of realtime group superblocks in xfs_scrub, and
update the scrub ioctl documentation.

Signed-off-by: "Darrick J. Wong" <djwong@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
---
 libfrog/scrub.c                     |    5 +++++
 libfrog/scrub.h                     |    1 +
 man/man2/ioctl_xfs_scrub_metadata.2 |    9 +++++++++
 scrub/repair.c                      |    1 +
 scrub/scrub.c                       |    6 ++++++
 5 files changed, 22 insertions(+)


diff --git a/libfrog/scrub.c b/libfrog/scrub.c
index b2d58c7a966b0d..e7fb8b890bc133 100644
--- a/libfrog/scrub.c
+++ b/libfrog/scrub.c
@@ -159,6 +159,11 @@ const struct xfrog_scrub_descr xfrog_scrubbers[XFS_SCRUB_TYPE_NR] = {
 		.descr	= "metadata directory paths",
 		.group	= XFROG_SCRUB_GROUP_METAPATH,
 	},
+	[XFS_SCRUB_TYPE_RGSUPER] = {
+		.name	= "rgsuper",
+		.descr	= "realtime group superblock",
+		.group	= XFROG_SCRUB_GROUP_RTGROUP,
+	},
 };
 
 const struct xfrog_scrub_descr xfrog_metapaths[XFS_SCRUB_METAPATH_NR] = {
diff --git a/libfrog/scrub.h b/libfrog/scrub.h
index a35d3e9c293fe5..83455c390e170a 100644
--- a/libfrog/scrub.h
+++ b/libfrog/scrub.h
@@ -16,6 +16,7 @@ enum xfrog_scrub_group {
 	XFROG_SCRUB_GROUP_ISCAN,	/* metadata requiring full inode scan */
 	XFROG_SCRUB_GROUP_SUMMARY,	/* summary metadata */
 	XFROG_SCRUB_GROUP_METAPATH,	/* metadata directory path */
+	XFROG_SCRUB_GROUP_RTGROUP,	/* per-rtgroup metadata */
 };
 
 /* Catalog of scrub types and names, indexed by XFS_SCRUB_TYPE_* */
diff --git a/man/man2/ioctl_xfs_scrub_metadata.2 b/man/man2/ioctl_xfs_scrub_metadata.2
index 1e7e327b37d226..545e3fcbac320e 100644
--- a/man/man2/ioctl_xfs_scrub_metadata.2
+++ b/man/man2/ioctl_xfs_scrub_metadata.2
@@ -88,6 +88,15 @@ .SH DESCRIPTION
 .BR sm_ino " and " sm_gen
 must be zero.
 
+.PP
+.TP
+.B XFS_SCRUB_TYPE_RGSUPER
+Examine a given realtime allocation group's superblock.
+The realtime allocation group number must be given in
+.IR sm_agno "."
+.IR sm_ino " and " sm_gen
+must be zero.
+
 .TP
 .B XFS_SCRUB_TYPE_INODE
 Examine a given inode record for obviously incorrect values and
diff --git a/scrub/repair.c b/scrub/repair.c
index e594e704f51503..c8cdb98de5457b 100644
--- a/scrub/repair.c
+++ b/scrub/repair.c
@@ -546,6 +546,7 @@ repair_item_difficulty(
 		case XFS_SCRUB_TYPE_REFCNTBT:
 		case XFS_SCRUB_TYPE_RTBITMAP:
 		case XFS_SCRUB_TYPE_RTSUM:
+		case XFS_SCRUB_TYPE_RGSUPER:
 			ret |= REPAIR_DIFFICULTY_PRIMARY;
 			break;
 		}
diff --git a/scrub/scrub.c b/scrub/scrub.c
index bcd63eea1030a6..a2fd8d77d82be0 100644
--- a/scrub/scrub.c
+++ b/scrub/scrub.c
@@ -66,6 +66,9 @@ format_metapath_descr(
 				(unsigned long long)vhead->svh_ino);
 
 	sc = &xfrog_metapaths[vhead->svh_ino];
+	if (sc->group == XFROG_SCRUB_GROUP_RTGROUP)
+		return snprintf(buf, buflen, _("rtgroup %u %s"),
+				vhead->svh_agno, _(sc->descr));
 	return snprintf(buf, buflen, "%s", _(sc->descr));
 }
 
@@ -107,6 +110,9 @@ format_scrubv_descr(
 		return snprintf(buf, buflen, _("%s"), _(sc->descr));
 	case XFROG_SCRUB_GROUP_METAPATH:
 		return format_metapath_descr(buf, buflen, vhead);
+	case XFROG_SCRUB_GROUP_RTGROUP:
+		return snprintf(buf, buflen, _("rtgroup %u %s"),
+				vhead->svh_agno, _(sc->descr));
 	}
 	return -1;
 }