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.\"     Title: mfsmetalogger
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 06/17/2017
.\"    Manual: \ \&
.\"    Source: \ \&
.\"  Language: English
.\"
.TH "MFSMETALOGGER" "8" "06/17/2017" "\ \&" "\ \&"
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.SH "NAME"
mfsmetalogger \- start, restart or stop Lizard File System metalogger process
.SH "SYNOPSIS"
.sp
.nf
\fBmfsmetalogger\fR [\fB\-f\fR] [\fB\-c\fR \fICFGFILE\fR] [\fB\-u\fR] [\fB\-d\fR] [\fB\-t\fR \fILOCKTIMEOUT\fR] [\fIACTION\fR]
.fi
.sp
.nf
\fBmfsmetalogger \-s\fR [\fB\-c\fR \fICFGFILE\fR]
.fi
.sp
.nf
\fBmfsmetalogger \-v\fR
.fi
.sp
.nf
\fBmfsmetalogger \-h\fR
.fi
.SH "DESCRIPTION"
.sp
\fBmfsmetalogger\fR is the metadata replication server of Lizard File System\&. Depending on parameters it can start, restart or stop LizardFS metalogger process\&. Without any options it starts LizardFS metalogger, killing previously run process if lock file exists\&.
.sp
SIGHUP (or \fIreload\fR \fIACTION\fR) forces \fBmfsmetalogger\fR to reload all configuration files\&.
.PP
\fB\-v\fR
.RS 4
print version information and exit
.RE
.PP
\fB\-h\fR
.RS 4
print usage information and exit
.RE
.PP
\fB\-c\fR \fICFGFILE\fR
.RS 4
specify alternative path of configuration file (default is
\fBmfsmetalogger\&.cfg\fR
in system configuration directory)
.RE
.PP
\fB\-u\fR
.RS 4
log undefined configuration values (when default is assumed)
.RE
.PP
\fB\-d\fR
.RS 4
run in foreground, don\(cqt daemonize
.RE
.PP
\fB\-t\fR \fILOCKTIMEOUT\fR
.RS 4
how long to wait for lockfile (default is 60 seconds)
.RE
.sp
\fIACTION\fR is the one of \fBstart\fR, \fBstop\fR, \fBrestart\fR, \fBreload\fR, \fBtest\fR, \fBisalive\fR or \fBkill\fR\&. Default action is \fBrestart\fR\&.
.SH "FILES"
.PP
\fBmfsmetalogger\&.cfg\fR
.RS 4
configuration file for LizardFS metalogger process; refer to
\fBmfsmetalogger\&.cfg\fR(5) manual for defails
.RE
.PP
\fBmfsmetalogger\&.lock\fR
.RS 4
PID file of running LizardFS metalogger process
.RE
.PP
\fB\&.mfsmetalogger\&.lock\fR
.RS 4
lock file of running LizardFS metalogger process (created in data directory)
.RE
.PP
\fBchangelog_ml\&.\fR*\fB\&.mfs\fR
.RS 4
LizardFS filesystem metadata change logs (backup of master change log files)
.RE
.PP
\fBmetadata\&.ml\&.mfs\&.back\fR
.RS 4
Latest copy of complete metadata\&.mfs\&.back file from LizardFS master\&.
.RE
.PP
\fBsessions\&.ml\&.mfs\fR
.RS 4
Latest copy of sessions\&.mfs file from LizardFS master\&.
.RE
.SH "REPORTING BUGS"
.sp
Report bugs to <contact@lizardfs\&.org>\&.
.SH "COPYRIGHT"
.sp
Copyright 2008\-2009 Gemius SA, 2013\-2015 Skytechnology sp\&. z o\&.o\&.
.sp
LizardFS 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 3\&.
.sp
LizardFS 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\&.
.sp
You should have received a copy of the GNU General Public License along with LizardFS\&. If not, see http://www\&.gnu\&.org/licenses/\&.
.SH "SEE ALSO"
.sp
mfsmaster(8), mfsmetalogger\&.cfg(5), moosefs(7)