Provided by: ledmon_0.32-1_i386 bug

NAME
       ledctl - Intel(R) LED control application for a storage enclosures.


SYNOPSIS
       ledctl [OPTIONS] pattern_name=list_of_devices ...


DESCRIPTION
       The ledctl is user space application design to control LEDs associated
       with each slot in an enclosure or a drive bay. There are two types of
       system: 2-LEDs system (Activity LED, Status LED) and 3-LEDs system
       (Activity LED, Locate LED, Fail LED). User must have root privileges to
       use this application.

       The ledctl application uses SGPIO and SES-2 protocol to control LEDs.
       The program implements IBPI patterns of SFF-8489 specification for
       SGPIO.  Please note some enclosures do not stick close to SFF-8489
       specification.  It might happen that enclosure processor will accept an
       IBPI pattern but it will blink the LEDs not according to SFF-8489
       specification or it has limited number of patterns supported.

       LED management (AHCI) and SAF-TE protocols are not supported.

       The ledctl application has been verified to work with Intel(R) storage
       controllers (i.e. Intel(R) AHCI controller). The application might work
       with storage controllers of other vendors (especially SCSI/SAS
       controllers). However storage controllers of other vendors have not
       been tested.

       The ledmon application has the highest priority when accessing LEDs
       then other programs. It means some patterns set by ledctl may have no
       effect (except Locate pattern).

       The ledctl application is part of Intel(R) Enclosure LED Utilities.

   Pattern Names
       The ledctl application accepts the following names for pattern_name
       argument according to SFF-8489 specification.

       locate  Turns Locate LED associated with the given device(s) or empty
               slot(s) on.

       locate_off
               Only turns Locate LED off.

       normal  Turns Status LED, Failure LED and Locate LED off.

       off     Only turns Status LED and Failure LED off.

       ica or degraded
               Visualizes "In a Critical Array" pattern.

       rebuild or rebuild_p
               Visualizes "Rebuild" pattern.

       ifa or failed_array
               Visualizes "In a Failed Array" pattern.

       hotspare
               Visualizes "Hotspare" pattern.

       pfa     Visualizes "Predicted Failure Analysis" pattern.

       failure or disk_failed
               Visualizes "Failure" pattern.

   List of Devices
       The application accepts a list of devices in two formats. The first
       format is a list with comma separated elements. The second format is
       a list in curly braces and elements are separated by space. See
       examples section bellow for details.

       A device is a path to file in /dev directory or in /sys/block
       directory.  It may identify a block device, a RAID device or a
       container device.  In case of RAID device or container device a state
       will be set for all block devices associated, respectively.


OPTIONS
       -c or --config=path
               Sets a path to local configuration file. If this option is
               specified the global configuration file and user configuration
               file has no effect.

       -l or --log=path
               Sets a path to local log file. If this option is specified the
               global log file /var/log/ledctl.log is not used.

       --quiet Turns off all messages send to "stdout" or "stderr" out. The
               messages will be still logged to local file and syslog
               facility.

       -h or --help
               Prints this text out and exits.

       -v or --version
               Displays version of ledctl and information about the license
               and exits.


FILES
       /var/log/ledctl.log
               Global log file, used by all instances of ledctl application.
               To force logging to user defined file use -l option switch.

       ~/.ledctl
               User configuration file, shared between ledmon and all ledctl
               application instances.

       /etc/ledcfg.conf
               Global configuration file, shared between ledmon and all ledctl
               application instances.


EXAMPLES
       The following example illustrates how to locate a single block device.

           ledctl locate=/dev/sda

       The following example illustrates how to off Locate LED for the same
       block device.

           ledctl locate_off=/dev/sda

       The following example illustrates how to locate disks of a RAID device
       and how to set rebuild pattern for two block devices at the same time.
       This example uses both formats of device list.

            ledctl locate=/dev/md127 rebuild={ /sys/block/sd[a-b] }

       The following example illustrates how to off Status LED and Failure LED
       for the given device(s).

            ledctl off={ /dev/sda /dev/sdb }

       The following example illustrates how to locate a three block devices.
       This example uses first format of device list.

            ledctl locate=/dev/sda,/dev/sdb,/dev/sdc


LICENSE
       Copyright (c) 2009 Intel Corporation.

       This program is distributed under the terms of the GNU General Public
       License as published by the Free Software Foundation. See the built-in
       help for details on the License and the lack of warranty.


SEE ALSO
       ledmon(8), ledctl.conf(5)


AUTHOR
       This manual page was written by Artur Wojcik <artur.wojcik@intel.com>.
       It may be used by others.