set master-only when slave swith to leader
set master-only when slave swith to leader

baidu/bfs,myawan/bfs-1,bluebore/dfs,bluebore/dfs,lylei/dfs,yvxiang/dfs,yvxiang/dfs,linyvxiang/dfs,myawan/bfs-1,bluebore/bfs,bluebore/bfs,linyvxiang/dfs,baidu/bfs,bluebore/dfs,00k/ToyDFS,myawan/bfs-1,bluebore/bfs,baidu/bfs,baidu/bfs,yvxiang/dfs,yvxiang/coverage_for_bfs,lylei/dfs,lylei/dfs,yvxiang/dfs,yvxiang/coverage_for_bfs,linyvxiang/dfs,yvxiang/coverage_for_bfs,yvxiang/coverage_for_bfs,myawan/bfs-1,lylei/dfs,00k/ToyDFS