rename fs_* to fs_log_* in mfsmetarestore
chunk_multi_* -> chunk_log_multi_*
export fs_log_* without METARESTORE
add metalogger into mfsmaster
enable mastercomm in mfsmaster when RUN_MODE!=master
export fs_log_*
replay changelog from masterconn
Merge branch 'master' into shadow
Merge branch 'master' into shadow
auto restore metadata in mfsmaster
Merge branch 'shadow' of github-ent.intra.douban.com:davies/moosefs into shadow
add default conf
Merge branch 'master' into shadow
fix version of changelog
no changelog is ok, reduce syslog of download sessions
disable timed jobs if not in MasterMode
use changelog API in mastercomm
kill cs connections if not in master mode
add header
flush changelogs to metalogger before exit.