mfsmetalogger - Man Page

start, restart or stop Lizard File System metalogger process


mfsmetalogger [-f] [-c CFGFILE] [-u] [-d] [-t LOCKTIMEOUT] [ACTION]
mfsmetalogger -s [-c CFGFILE]
mfsmetalogger -v
mfsmetalogger -h


mfsmetalogger is the metadata replication server of Lizard File System. Depending on parameters it can start, restart or stop LizardFS metalogger process. Without any options it starts LizardFS metalogger, killing previously run process if lock file exists.

SIGHUP (or reload ACTION) forces mfsmetalogger to reload all configuration files.


print version information and exit


print usage information and exit


specify alternative path of configuration file (default is mfsmetalogger.cfg in system configuration directory)


log undefined configuration values (when default is assumed)


run in foreground, don’t daemonize


how long to wait for lockfile (default is 60 seconds)

ACTION is the one of start, stop, restart, reload, test, isalive or kill. Default action is restart.



configuration file for LizardFS metalogger process; refer to mfsmetalogger.cfg(5) manual for defails


PID file of running LizardFS metalogger process


lock file of running LizardFS metalogger process (created in data directory)


LizardFS filesystem metadata change logs (backup of master change log files)

Latest copy of complete metadata.mfs.back file from LizardFS master.

Latest copy of sessions.mfs file from LizardFS master.

Reporting Bugs

Report bugs to <>.

See Also

mfsmaster(8), mfsmetalogger.cfg(5), moosefs(7)

Referenced By

lizardfs(7), mfsmetalogger.cfg(5).