hw_vars: fix loop mount error

mount: /tmp/vm-scalability.img: failed to setup loop device: No such file or directory

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/hw_vars b/hw_vars
index 0bbd177..3389657 100755
--- a/hw_vars
+++ b/hw_vars
@@ -48,7 +48,11 @@ create_sparse_root () {
 	if mountpoint -q $SPARSE_ROOT; then
 		echo "$SPARSE_ROOT already mounted"
 	else
-		$CMD mount -o loop $SPARSE_ROOT.img $SPARSE_ROOT
+		$CMD mount -o loop $SPARSE_ROOT.img $SPARSE_ROOT 2>/dev/null || {
+			local loop_dev=$(losetup -f --show $SPARSE_ROOT.img)
+			[[ $loop_dev ]] || exit
+			mount $loop_dev $SPARSE_ROOT
+		}
 	fi
 }