From 6e7d726d6fe2d5c8a76e30714380c0dd0119d61c Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <djwong@kernel.org>
Date: Wed, 20 Nov 2024 16:24:39 -0800
Subject: [PATCH] xfs_io: support scrubbing rtgroup metadata

Support scrubbing all rtgroup metadata with a scrubv call.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 io/scrub.c        | 40 ++++++++++++++++++++++++++++++++++++++++
 man/man8/xfs_io.8 |  3 ++-
 2 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/io/scrub.c b/io/scrub.c
index 45229a8a..99c24d95 100644
--- a/io/scrub.c
+++ b/io/scrub.c
@@ -165,6 +165,32 @@ parse_metapath(
 	return true;
 }
 
+static bool
+parse_rtgroup(
+	int		argc,
+	char		**argv,
+	int		optind,
+	__u32		*rgno)
+{
+	char		*p;
+	unsigned long	control;
+
+	if (optind != argc - 1) {
+		fprintf(stderr, _("Must specify one rtgroup number.\n"));
+		return false;
+	}
+
+	control = strtoul(argv[optind], &p, 0);
+	if (*p != '\0') {
+		fprintf(stderr, _("Bad rtgroup number '%s'.\n"),
+				argv[optind]);
+		return false;
+	}
+
+	*rgno = control;
+	return true;
+}
+
 static int
 parse_args(
 	int				argc,
@@ -230,6 +256,12 @@ parse_args(
 			return command_usage(cmdinfo);
 		}
 		break;
+	case XFROG_SCRUB_GROUP_RTGROUP:
+		if (!parse_rtgroup(argc, argv, optind, &meta->sm_agno)) {
+			exitcode = 1;
+			return command_usage(cmdinfo);
+		}
+		break;
 	case XFROG_SCRUB_GROUP_FS:
 	case XFROG_SCRUB_GROUP_NONE:
 	case XFROG_SCRUB_GROUP_SUMMARY:
@@ -539,6 +571,8 @@ scrubv_f(
 		group = XFROG_SCRUB_GROUP_ISCAN;
 	else if (!strcmp(argv[optind], "summary"))
 		group = XFROG_SCRUB_GROUP_SUMMARY;
+	else if (!strcmp(argv[optind], "rtgroup"))
+		group = XFROG_SCRUB_GROUP_RTGROUP;
 	else {
 		printf(_("Unknown group '%s'.\n"), argv[optind]);
 		exitcode = 1;
@@ -576,6 +610,12 @@ scrubv_f(
 			return command_usage(&scrubv_cmd);
 		}
 		break;
+	case XFROG_SCRUB_GROUP_RTGROUP:
+		if (!parse_rtgroup(argc, argv, optind, &scrubv.head.svh_agno)) {
+			exitcode = 1;
+			return command_usage(&scrubv_cmd);
+		}
+		break;
 	default:
 		ASSERT(0);
 		break;
diff --git a/man/man8/xfs_io.8 b/man/man8/xfs_io.8
index c73fee7c..6775b0a2 100644
--- a/man/man8/xfs_io.8
+++ b/man/man8/xfs_io.8
@@ -1425,11 +1425,12 @@ Currently supported versions are 1 and 5.
 .RE
 .PD
 .TP
-.BI "scrub " type " [ " agnumber " | " "ino" " " "gen" " | " metapath " ]"
+.BI "scrub " type " [ " agnumber " | " rgnumber " | " "ino" " " "gen" " | " metapath " ]"
 Scrub internal XFS filesystem metadata.  The
 .BI type
 parameter specifies which type of metadata to scrub.
 For AG metadata, one AG number must be specified.
+For realtime group metadata, one rtgroup number must be specified.
 For file metadata, the scrub is applied to the open file unless the
 inode number and generation number are specified.
 For metapath, the name of a file or a raw number must be specified.
-- 
2.47.2