os/modules/core/hibernation.nix
Benjamin Bädorf dc8257f31f
Fix hibernation
The resumeDevice and kernel `resume` parameter were being used wrong.

Only `boot.resumeDevice` is necessary, and it should point at the _block
device_ that holds the swapfile. If you are running on encrypted
volumes, this means you will need to use the name of the *decrypted
block device* on which the swapfile sits.
2022-08-24 18:46:35 +02:00

36 lines
1.1 KiB
Nix

{ config, pkgs, lib, ... }:
with lib;
let
cfg = config.pub-solar.core.hibernation;
in
{
options.pub-solar.core.hibernation = {
enable = mkOption {
type = types.bool;
default = false;
description = "Whether the device can hibernate. This creates a swapfile at /swapfile.";
};
resumeDevice = mkOption {
type = types.str;
default = "/dev/sda1";
description = "The location of the hibernation resume swap file.";
};
resumeOffset = mkOption {
type = types.nullOr types.int;
default = null;
description = "The swap file offset. Can be found by running `filefrag -v $swap_file_location`. See https://wiki.archlinux.org/title/Power_management/Suspend_and_hibernate#Hibernation_into_swap_file";
};
};
config = {
boot = mkIf cfg.enable {
resumeDevice = cfg.resumeDevice;
kernelParams =
if (cfg.resumeOffset == null && cfg.enable) then builtins.abort "config.pub-solar.resumeOffset has to be set if config.pub-solar.enable is true."
else [ "resume_offset=${builtins.toString cfg.resumeOffset}" ];
};
};
}