mfsmetalogger(8)
| 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
- -v
- print version information and exit
- -h
- print usage information and exit
- -c CFGFILE
- specify alternative path of configuration file (default is mfsmetalogger.cfg in system configuration directory)
- -f
- run in foreground, don't daemonize
- -d
- run with dangerous options (names: DANGEROUS_*)
- -u
- log undefined configuration values (when default is assumed)
- -n
- do not attempt to increase limit of core dump size
- -t LOCKTIMEOUT
- how long to wait for lockfile (in seconds; default is 60 seconds)
- ACTION
- tells metalogger to perform one of the following actions:
- start
- Start metalogger process if the process is not already running, otherwise display error message.
- stop
- Stop metalogger process if the process is running, otherwise display error message.
- restart
- (default action) If the metalogger process is running, restart it, if it's not running, start it.
- reload
- Send a signal to metalogger process to reload config files.
- info
- Send a signal to metalogger process to dump debug information file in working directory.
- test
- Displays "mfsmetalogger pid: PID" if the metalogger is running (and return 0) or "mfsmetalogger is not running" otherwise (and return 1).
- kill
- Send termination signal to metalogger process.
- restore
- Not implemented.
FILES
- mfsmetalogger.cfg
- 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)
- changelog_ml.*.mfs
- MooseFS filesystem metadata change logs (backup of master change log files, created in data directory)
- metadata.ml.mfs.back
- 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) 2026 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 this program; if not, see <https://www.gnu.org/licenses/>.
SEE ALSO
mfsmaster(8), mfsmetalogger.cfg(5)
| May 2026 | MooseFS 4.59.2-1 |