nixpkgs/nixos/modules/hardware/usb-storage.nix
2024-08-30 22:59:22 +02:00

18 lines
640 B
Nix

{ config, lib, pkgs, ... }:
{
options.hardware.usbStorage.manageStartStop = lib.mkOption {
type = lib.types.bool;
default = true;
description = ''
Enable this option to gracefully spin-down external storage during shutdown.
If you suspect improper head parking after poweroff, install `smartmontools` and check
for the `Power-Off_Retract_Count` field for an increment.
'';
};
config = lib.mkIf config.hardware.usbStorage.manageStartStop {
services.udev.extraRules = ''
ACTION=="add|change", SUBSYSTEM=="scsi_disk", DRIVERS=="usb-storage", ATTR{manage_system_start_stop}="1"
'';
};
}