ras-mc-ctl - RAS memory controller admin utility
program is a perl
(1) script which performs some
useful RAS administration tasks on EDAC (Error Detection and Correction)
- Display a brief usage message.
- Print mainboard vendor and model for this hardware, if
available. The method used by ras-mc-ctl to obtain the mainboard
vendor and model information for the current system is described below in
the MAINBOARD CONFIGURATION section.
- Print the status of EDAC drivers (loaded or unloaded).
- Be less verbose when executing an operation.
- 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.
- Display the configured labels for the current hardware, as
well as the current labels registered with EDAC.
- Print DMI labels, when bank locator is available in the DMI
table. It helps to fill the labels database at
- Specify an alternate location for the labels database.
- Specify a delay of time seconds before registering
DIMM labels. Only meaninful if used together with --register-labels.
- Prints the memory layout as detected by the EDAC driver.
Useful to check if the EDAC driver is properly detecting the memory
script uses the following method to determine the current
system's mainboard vendor and model information:
- If the config file /etc/edac/mainboard exists, then it is
parsed by ras-mc-ctl. The mainboard config file has the following
vendor = <mainboard vendor string>
model = <mainboard model string>
script = <script to gather mainboard information>
Where anything after a '#' character on a line is considered a comment. If
the keyword script is specified, then that script or executable is
run by ras-mc-ctl 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.
- If no mainboard config file exists, then ras-mc-ctl
will attempt to read DMI information from the sysfs files
- If the sysfs files above do not exist, then
ras-mc-ctl will fall back to parsing output of the
dmidecode(8) utility. Use of this utility will most often require
that ras-mc-ctl be run as root.