mfsmaster
NAME
mfsmaster - start, restart or stop MooseFS master process
SYNOPSIS
mfsmaster [-c CFGFILE] [-f] [-d] [-u] [-n] [-i] [-a] [-e] [-x[x]] [-t LOCKTIMEOUT] [ACTION]
mfsmaster -v
mfsmaster -h
DESCRIPTION
mfsmaster is the master program 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 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.
FILES
- 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)
REPORTING BUGS
Report bugs to bugs@moosefs.com
COPYRIGHT
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
SEE ALSO
mfschunkserver(8), mfsmount(8), mfsmaster.cfg(5), mfsexports.cfg(5), mfstopology.cfg(5)