mfsmaster - start, restart or stop MooseFS master process
mfsmaster [-c CFGFILE] [-f]
[-d] [-u] [-n] [-i] [-a] [-e]
[-x[x]] [-t LOCKTIMEOUT] [ACTION]
mfsmaster -v
mfsmaster -h
mfsmaster is the master program of MooseFS.
- -v
- print version information and exit
- -h
- print usage information and exit
- -c CFGFILE
- specify alternative path of configuration file (default is
mfsmaster.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
- -i
- ignore some metadata structure errors
- -a
- automatically restore metadata from change logs
- -e
- (pro only) start without metadata (used to start additional masters)
- -x
- produce more verbose output
- -xx
- even more verbose output
- -t
LOCKTIMEOUT
- how long to wait for lockfile (in seconds; default is 1800 seconds)
- ACTION
- tells master to perform one of the following actions:
- start
- Start master process if the process is not already running, otherwise
display error message.
- stop
- Stop master process if the process is running, otherwise display error
message.
- restart
- (default action) If the master process is running, restart it, if it's not
running, start it.
- reload
- Send a signal to master process to reload config files.
- info
- Send a singal to master process to dump debug information file in working
directory.
- test
- Displays "mfsmaster pid: PID" if the master is running (and
return 0) or "mfsmaster is not running" otherwise (and return
1).
- kill
- Send termination signal to master process.
- restore
- Restore current metadata file using backup metadata and changlog files (if
possible, i.e. if correct files exist), write it to working directory and
exit.
- mfsmaster.cfg
- configuration file for MooseFS master process; refer to
mfsmaster.cfg(5) manual for details
- mfsexports.cfg
- MooseFS access control file; refer to mfsexports.cfg(5) manual for
details
- mfstopology.cfg
- Network topology definitions; refer to mfstopology.cfg(5) manual
for details
- .mfsmaster.lock
- lock file of running MooseFS master process (created in data
directory)
- metadata.mfs,
metadata.mfs.back
- MooseFS filesystem metadata image (created in data directory)
- changelog.*.mfs
- MooseFS filesystem metadata change logs (created in data directory; merged
into metadata.mfs once per hour)
- data.stats
- MooseFS master charts state (created in data directory)
Report bugs to <bugs@moosefs.com>.
Copyright (C) 2024 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
mfschunkserver(8), mfsmount(8),
mfsmaster.cfg(5), mfsexports.cfg(5),
mfstopology.cfg(5)