mon/mgr: add detail error infomation

Signed-off-by: Yan Jun <yan.jun8@zte.com.cn>

diff --git a/src/mon/MgrMonitor.cc b/src/mon/MgrMonitor.cc
index 863672afe7f5d7ccb29ec14a5a53bd6aa2bf32a5..97ed4635ebc4d6021381a386d1d1223d5337e58a 100644 (file)
--- a/src/mon/MgrMonitor.cc
+++ b/src/mon/MgrMonitor.cc
@@ -579,6 +579,7 @@ bool MgrMonitor::prepare_command(MonOpRequestRef op)
       promote_standby();
     }
   } else {
+    ss << "Command '" << prefix << "' not implemented!";
     r = -ENOSYS;
   }