MFS的MASTER启动出现错误

open files limit has been set to: 4096
working directory: /usr/mfs/var/mfs
lockfile created and locked
initializing mfsmaster modules ...
exports file has been loaded
topology file has been loaded
loading metadata ...
can't find metadata.mfs - try using option '-a'
init: metadata manager failed !!!

error occured during initialization - exiting

解决方案：
cd ~/var/mfs/

mv metadata.mfs.back metadata.mfs 

即可解决