From fa2a8c17da431c4940cc4a50ce20134e1fa5c678 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Wed, 25 Jan 2017 20:02:43 -0600
Subject: [PATCH] xfs_repair: zero shared_vn

Since shared_vn always has to be zero, zero it at the start of repair.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
---
 repair/phase1.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/repair/phase1.c b/repair/phase1.c
index 126d0b35b..979988314 100644
--- a/repair/phase1.c
+++ b/repair/phase1.c
@@ -138,6 +138,13 @@ _("Cannot disable lazy-counters on V5 fs\n"));
 		}
 	}
 
+	/* shared_vn should be zero */
+	if (sb->sb_shared_vn) {
+		do_warn(_("resetting shared_vn to zero\n"));
+		sb->sb_shared_vn = 0;
+		primary_sb_modified = 1;
+	}
+
 	if (primary_sb_modified)  {
 		if (!no_modify)  {
 			do_warn(_("writing modified primary superblock\n"));
-- 
2.47.2