.\"****************************************************************************
.\" $Id$
.\"****************************************************************************
.\"Copyright (c) 2013 Mauro Carvalho Chehab <mchehab@redhat.com>
.\"This tool is a modification of the edac-ctl, written as part of the
.\"edac-utils:
.\" Copyright (C) 2006-2007 The Regents of the University of California.
.\" Produced at Lawrence Livermore National Laboratory.
.\" Written by Mark Grondona <mgrondona@llnl.gov>
.\" UCRL-CODE-230739.
.\"
.\" This 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; either version 2 of the License, or
.\" (at your option) any later version.
.\"
.\" This 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 this program; if not, write to the Free Software Foundation, Inc.,
.\" 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
.\"****************************************************************************

.TH RAS-MC-CTL 8 "" "" "RAS memory controller admin utility"

.SH NAME
ras-mc-ctl \- RAS memory controller admin utility

.SH SYNOPSIS
.B ras-mc-ctl
[\fIOPTION\fR]...

.SH DESCRIPTION

The \fBras-mc-ctl\fR program is a \fBperl\fR(1) script which performs
some useful RAS administration tasks on EDAC (Error Detection and Correction)
drivers.

.SH OPTIONS
.TP
.BI "--help"
Display a brief usage message.
.TP
.BI "--mainboard"
Print mainboard vendor and model for this hardware, if available.
The method used by \fBras-mc-ctl\fR to obtain the mainboard vendor
and model information for the current system is described below
in the \fIMAINBOARD CONFIGURATION\fR section.
.TP
.BI "--status"
Print the status of EDAC drivers (loaded or unloaded).
.TP
.BI "--quiet"
Be less verbose when executing an operation.
.TP
.BI "--register-labels"
Register motherboard DIMM labels into EDAC driver sysfs files.
This option uses the detected mainboard manufacturer and model
number in combination with a "labels database" found in any
of the files under /etc/ras/dimm_labels.d/* or in the labels.db file
at /etc/ras/dimm_labels.db. An entry for the current hardware must
exist in the labels database for this option to do anything.
.TP
.BI "--print-labels"
Display the configured labels for the current hardware, as
well as the current labels registered with EDAC.
.TP
.BI "--guess-labels"
Print DMI labels, when bank locator is available in the DMI table.
It helps to fill the labels database at /etc/ras/dimm_labels.d/.
.TP
.BI "--labeldb="DB
Specify an alternate location for the labels database.
.TP
.BI "--delay="time
Specify a delay of \fBtime\fR seconds before registering DIMM labels.
Only meaninful if used together with --register-labels.
.TP
.BI "--layout
Prints the memory layout as detected by the EDAC driver. Useful to check
if the EDAC driver is properly detecting the memory controller architecture.

.SH MAINBOARD CONFIGURATION
.PP
The \fBras-mc-ctl\fR script uses the following method to determine the
current system's mainboard vendor and model information:

.IP "1." 4
If the config file /etc/edac/mainboard exists, then it is
parsed by \fBras-mc-ctl\fR. The mainboard config file has the following
simple syntax:
.nf

       vendor = <mainboard vendor string>
       model =  <mainboard model string>
       script = <script to gather mainboard information>

.fi
Where anything after a '#' character on a line is considered a comment.
If the keyword \fBscript\fR is specified, then that script or
executable is run by \fBras-mc-ctl\fR to gather the mainboard vendor
and model information. The script should write the resulting information
on stdout in the same format as the mainboard config file.

.IP "2."
If no mainboard config file exists, then \fBras-mc-ctl\fR will attempt
to read DMI information from the sysfs files
.nf

     /sys/class/dmi/id/board_vendor
     /sys/class/dmi/id/board_name

.fi

.IP "3."
If the sysfs files above do not exist, then \fBras-mc-ctl\fR will fall
back to parsing output of the \fBdmidecode\fR(8) utility. Use of this
utility will most often require that \fBras-mc-ctl\fR be run as root.

.SH SEE ALSO
\fBrasdaemon\fR(1)