[root@varnish mfs]# /usr/local/mfs/sbin/mfsmaster restart 启动出现下面错误
working directory: /usr/local/mfs/var/mfs
lockfile created and locked
initializing mfsmaster modules ...
loading sessions ... ok
sessions file has been loaded
exports file has been loaded
mfstopology configuration file (/usr/local/mfs/etc/mfstopology.cfg) not found - using defaults
loading metadata ...
can‘t open metadata file
if this is new instalation then rename /usr/local/mfs/var/mfs/metadata.mfs.empty as /usr/local/mfs/var/mfs/metadata.mfs
init: file system manager failed !!!
error occured during initialization - exiting
解决方法：
[root@varnish mfs]# cd /usr/local/mfs/var/mfs/
[root@varnish mfs]# mv metadata.mfs.empty metadata.mfs
启动成功：
[root@varnish mfs]# /usr/local/mfs/sbin/mfsmaster restart
working directory: /usr/local/mfs/var/mfs
lockfile created and locked
initializing mfsmaster modules ...
loading sessions ... ok
sessions file has been loaded
exports file has been loaded
mfstopology configuration file (/usr/local/mfs/etc/mfstopology.cfg) not found - using defaults
loading metadata ...
create new empty filesystemmetadata file has been loaded
no charts data file - initializing empty charts
master <-> metaloggers module: listen on *:9419
master <-> chunkservers module: listen on *:9420
main master server module: listen on *:9421
mfsmaster daemon initialized properly
启动mfs 提示error occured during initialization - exiting
原文：http://vqiao.blog.51cto.com/9368913/1590982