Hi!
+++ b/Documentation/ABI/testing/sysfs-block @@ -316,3 +316,19 @@ Description: does not complete in this time then the block driver timeout handler is invoked. That timeout handler can decide to retry the request, to fail it or to start a device recovery strategy. + +What: /sys/block/<disk>/led +Date: August 2021 +Contact: Ian Pilcher <arequipeno@gmail.com> +Description: + Set the LED associated with this block device (or show available + LEDs and the currently selected LED, if any). + + Reading the attribute will display the available LEDs (LEDs that + are associated with the blkdev LED trigger). The currently + selected LED is enclosed in square brackets. To clear the + device's LED association write 'none' (without the quotes) or + an empty string/line to the attribute. + + See Documentation/ABI/testing/sysfs-class-led-trigger-blkdev and + Documentation/block/blk-ledtrig.rst.)
I have to agree with Marek / Pali -- this is very strange interface. Best regards, Pavel -- http://www.livejournal.com/~pavelmachek