mfsmetalogger

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 singal 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

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