nixpkgs/nixos/modules/hardware/usb-storage.nix
2022-08-08 21:03:22 +03:00

21 lines
642 B
Nix

{ config, lib, pkgs, ... }:
with lib;
{
options.hardware.usbStorage.manageStartStop = mkOption {
type = types.bool;
default = true;
description = lib.mdDoc ''
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 = mkIf config.hardware.usbStorage.manageStartStop {
services.udev.extraRules = ''
ACTION=="add|change", SUBSYSTEM=="scsi_disk", DRIVERS=="usb-storage", ATTR{manage_start_stop}="1"
'';
};
}