mfsmetalogger -s [-c CFGFILE]
mfsmetalogger -v
mfsmetalogger -h
mfsmetalogger is the metadata replication server of Moose File System. Depending on parameters it can start, restart or stop MooseFS metalogger process. Without any options it starts MooseFS metalogger, killing previously run process if lock file exists.
SIGHUP (or 'reload' ACTION) forces mfsmetalogger to reload all configuration files.
mfsmetalogger exists since 1.6.5 version of MooseFS; before this version mfschunkserver\|(8) was responsible of logging metadata changes.
-v print version information and exit
-h print usage information and exit
-f (deprecated, use start action instead) forcily run MooseFS metalogger process, without trying to kill previous instance (this option allows to run MooseFS metalogger if stale PID file exists)
-s (deprecated, use stop action instead) stop MooseFS metalogger process
-c CFGFILE specify alternative path of configuration file (default is mfsmetalogger.cfg in system configuration directory)
-u log undefined configuration values (when default is assumed)
-d run in foreground, don't daemonize
-t LOCKTIMEOUT how long to wait for lockfile (default is 60 seconds)
ACTION is the one of start, stop, restart, reload, test or kill. Default action is restart unless -s (stop) or -f (start) option is given. Note that -s and -f options are deprecated, likely to disappear and ACTION parameter to become obligatory in MooseFS 1.7.
mfsmetalogger.cfg configuration file for MooseFS metalogger process; refer to mfsmetalogger.cfg\|(5) manual for details
mfsmetalogger.lock PID file of running MooseFS metalogger process (created in RUN_PATH by MooseFS < 1.6.9)
.mfsmetalogger.lock lock file of running MooseFS metalogger process (created in data directory since MooseFS 1.6.9)
changelog_ml.*.mfs MooseFS filesystem metadata change logs (backup of master change log files)
metadata.ml.mfs.back Latest copy of complete metadata.mfs.back file from MooseFS master.
sessions.ml.mfs Latest copy of sessions.mfs file from MooseFS master.