From 22bc781c391baa0153d16ffbd7d6c9990b5d401f Mon Sep 17 00:00:00 2001
From: Eryu Guan <eguan@redhat.com>
Date: Mon, 8 Feb 2016 09:27:14 +1100
Subject: [PATCH] common: add overlayfs isupport in _scratch_cleanup_files()

All files in lower/upper dirs should be removed for overlayfs in
_scratch_cleanup_files(), not only files in merged dir, otherwise files
from lower dir won't be removed.

Signed-off-by: Eryu Guan <eguan@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---
 common/rc | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/common/rc b/common/rc
index 0c4ef666..e4a163d7 100644
--- a/common/rc
+++ b/common/rc
@@ -707,9 +707,17 @@ _mkfs_dev()
 # remove all files in $SCRATCH_MNT, useful when testing on NFS/CIFS
 _scratch_cleanup_files()
 {
-	_scratch_mount
-	rm -rf $SCRATCH_MNT/*
-	_scratch_unmount
+	case $FSTYP in
+	overlay)
+		# $SCRATCH_DEV is a valid directory in overlay case
+		rm -rf $SCRATCH_DEV/*
+		;;
+	*)
+		_scratch_mount
+		rm -rf $SCRATCH_MNT/*
+		_scratch_unmount
+		;;
+	esac
 }
 
 _scratch_mkfs()
-- 
2.39.5