From 4811d40604f58696ddd738cea336d3af53248329 Mon Sep 17 00:00:00 2001
From: Wang shuo <wangshuo47@huawei.com>
Date: Thu, 20 Jun 2019 11:17:28 +0800
Subject: [PATCH] os-prober: wait for device mapper device is created

reason: wait for device mapper device is created

Signed-off-by: Wang shuo <wangshuo47@huawei.com>
---
 common.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/common.sh b/common.sh
index 8030efa..0980208 100644
--- a/common.sh
+++ b/common.sh
@@ -225,9 +225,11 @@ find_uuid () {
 
 do_dmsetup () {
 	local prefix partition dm_device partition_name size_p
+	local int
 	prefix="$1"
 	partition="$2"
 	dm_device=
+	int=1
 
 	if type dmsetup >/dev/null 2>&1 && \
 	   type blockdev >/dev/null 2>&1; then
@@ -240,6 +242,14 @@ do_dmsetup () {
 		else
 			debug "creating device mapper device $dm_device"
 			echo "0 $size_p linear $partition 0" | dmsetup create -r $partition_name
+			while(( $int<=3 ))
+			do
+				if [ -e "$dm_device" ]; then
+					break
+				fi
+				let "int++"
+				sleep 1
+			done
 		fi
 	fi
 	echo "$dm_device"
-- 
2.19.1