sgpio - Unix, Linux Command

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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.


-h, --help displays a short help text
-V, --version
  displays the utility and AHCI SGPIO specification
-d, --disk disk name of LED location. Names are sda,sdb,sdc,... Multiple names can be provided in a comma-delimited list.
-p, --port SATA port number of LED location, can be used if a disk name is no longer valid. 0,1,2,3,...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.
-s, --status
  status of the LED to set. LED status is: locate, fault, rebuild, off
-f, --freq 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 <>
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