From d145fcd7d4e18d6c60a4c84553b61ce905fe4312 Mon Sep 17 00:00:00 2001
From: renhwztetecs <sky@renhuanwentekiMacBook-Pro.local>
Date: Thu, 7 Jul 2016 23:05:25 +0800
Subject: [PATCH] mon/mds: add err info when load_metadata is abnormal

add a print of the most important reason is that:
when the MDSMonitor::init  call MDSMonitor::load_metadata, no processing error code,
so printing can discover problems

Signed-off-by: huanwen ren <ren.huanwen@zte.com.cn>
---
 src/mon/MDSMonitor.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mon/MDSMonitor.cc b/src/mon/MDSMonitor.cc
index ec6f5e37d751..b6eed8505f65 100644
--- a/src/mon/MDSMonitor.cc
+++ b/src/mon/MDSMonitor.cc
@@ -2641,8 +2641,10 @@ int MDSMonitor::load_metadata(map<mds_gid_t, Metadata>& m)
 {
   bufferlist bl;
   int r = mon->store->get(MDS_METADATA_PREFIX, "last_metadata", bl);
-  if (r)
+  if (r) {
+    dout(1) << "Unable to load 'last_metadata'" << dendl;
     return r;
+  }
 
   bufferlist::iterator it = bl.begin();
   ::decode(m, it);
-- 
2.47.3