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mfsmetalogger(8) This is part of MooseFS mfsmetalogger(8)

NAME

mfsmetalogger - start, restart or stop MooseFS metalogger process

SYNOPSIS

mfsmetalogger [-c CFGFILE] [-f] [-d] [-u] [-n] [-t LOCKTIMEOUT] [ACTION]

mfsmetalogger -v

mfsmetalogger -h

DESCRIPTION

mfsmetalogger is the metadata replication server of MooseFS.

OPTIONS

print version information and exit
print usage information and exit
specify alternative path of configuration file (default is mfsmetalogger.cfg in system configuration directory)
run in foreground, don't daemonize
run with dangerous options (names: DANGEROUS_*)
log undefined configuration values (when default is assumed)
do not attempt to increase limit of core dump size
how long to wait for lockfile (in seconds; default is 60 seconds)
tells metalogger to perform one of the following actions:
Start metalogger process if the process is not already running, otherwise display error message.
Stop metalogger process if the process is running, otherwise display error message.
(default action) If the metalogger process is running, restart it, if it's not running, start it.
Send a signal to metalogger process to reload config files.
Send a singal to metalogger process to dump debug information file in working directory.
Displays "mfsmetalogger pid: PID" if the metalogger is running (and return 0) or "mfsmetalogger is not running" otherwise (and return 1).
Send termination signal to metalogger process.
Not implemented.

FILES

configuration file for MooseFS metalogger process; refer to mfsmetalogger.cfg(5) manual for details
.mfsmetalogger.lock
lock file of running MooseFS metalogger process (created in data directory)
MooseFS filesystem metadata change logs (backup of master change log files, created in data directory)
Latest copy of complete metadata.mfs.back file from MooseFS master (created in data directory)
.mfsmetalogger_info.txt
metalogger info file, created by sending the process INFO signal, with work parameters that can be used for debugging/support purposes (created in data directory)

REPORTING BUGS

Report bugs to <bugs@moosefs.com>.

COPYRIGHT

Copyright (C) 2025 Jakub Kruszona-Zawadzki, Saglabs SA

This file is part of MooseFS.

MooseFS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 (only).

MooseFS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with MooseFS; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02111-1301, USA or visit http://www.gnu.org/licenses/gpl-2.0.html

SEE ALSO

mfsmaster(8), mfsmetalogger.cfg(5)

September 2025 MooseFS 4.58.0-1