mfsmetalogger8

Usage

Overview

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)