sgpio(1) USER COMMANDS sgpio(1)
sgpio - captive backplane LED control utility
sgpio [-h] [-V] [[-d|--disk <device>[,<device>...]] | [-p|--port <port>[,<port>...]]]
[-s|--status <status>] [-f|--freq <frequency>]
Serial General Purpose Input Output (SGPIO) is a communication method used between a main
board and a variety of internal and external hard disk drive bay enclosures. This utility
can be used to control LEDs in an enclosure. For more information about SGPIO, please
consult the SFF-8485 Specification.
displays a short help text
displays the utility and AHCI SGPIO specification
disk name of LED location. Names are sda,sdb,sdc,... Multiple names can be pro-
vided in a comma-delimited list.
SATA port number of LED location, can be used if a disk name is no longer valid.
0,1,2,3,... Multiple ports can be provided in a comma-delimited list.
status of the LED to set. LED status is: locate, fault, rebuild, off
Set the frequency at which the LED should blink (in Hz). Frequency should be an
integer between 1 and 10.
Set the locate LED on SDA with an Intel Intelligent backplane:
sgpio -d sda -s locate
Set the locate LED on SDA to flash at 3 Hz for non-intelligent backplanes:
sgpio -d sda -s locate -f 3
Set SATA port 2 with fault at a 3 Hz flash rate:
sgpio -p 2 -s fault -f 3
Set disks sda through sdf to fault:
sgpio -d sda,sdb,sdc,sdd,sde,sdf -s fault
sgpio should return zero when successful. It will return with a non-zero value if there
was a failure.
Eric R. Hall <Eric.R.Hall@intel.com>
version 0.3 December 2007 sgpio(1)