blob: 4ab67aee395639b7c5b38b613c7f7b3bdf8de7ae (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
{ config, pkgs, ... }:
with pkgs.lib;
{
###### interface
options = {
powerManagement.scsiLinkPolicy = mkOption {
default = "";
example = "min_power";
type = types.uniq types.string;
description = ''
Configure the SCSI link power management policy. By default,
the kernel configures "max_performance".
'';
};
};
###### implementation
config = mkIf (config.powerManagement.scsiLinkPolicy != "") {
jobs."scsi-link-pm" =
{ description = "SCSI Link Power Management Policy";
startOn = "stopped udevtrigger";
task = true;
script = ''
shopt -s nullglob
for x in /sys/class/scsi_host/host*/link_power_management_policy; do
echo ${config.powerManagement.scsiLinkPolicy} > $x
done
'';
};
};
}
|