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add hdparm to spin-down drives

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This commit is contained in:
Daniel Langbein 2023-10-03 12:48:52 +02:00
parent 171edb5034
commit b42540c917
Signed by: langfingaz
GPG Key ID: 6C47C753F0823002
6 changed files with 88 additions and 26 deletions
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1
hosts/yodaNas/configuration.nix
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@ -57,6 +57,7 @@ in
#../../modules/ntfs.nix
#../../modules/veracrypt.nix
../../modules/btrbk
../../modules/spin-down.nix
];
networking.hostName = "yodaNas";

1
hosts/yodaTab/configuration.nix
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@ -56,6 +56,7 @@ in
../../modules/ntfs.nix
#../../modules/veracrypt.nix
#../../modules/btrbk
#../../modules/spin-down.nix
];
networking.hostName = "yodaTab";

1
hosts/yodaTux/configuration.nix
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@ -56,6 +56,7 @@ in
../../modules/ntfs.nix
#../../modules/veracrypt.nix
#../../modules/btrbk
#../../modules/spin-down.nix
];
networking.hostName = "yodaTux";

1
hosts/yodaYoga/configuration.nix
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@ -57,6 +57,7 @@ in
#../../modules/ntfs.nix
#../../modules/veracrypt.nix
#../../modules/btrbk
#../../modules/spin-down.nix
];
networking.hostName = "yodaYoga";

26
modules/btrbk/default.nix
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@ -12,32 +12,6 @@
# Print generated systemd unit file
# cat "$(systemctl show -P FragmentPath btrbk-<instance-name>.service)"
# TODO: Maybe the following is not necessary if using hd-idle anyways (!)
# TODO: Mount/Unmount backup drive
# Example1:
# - https://github.com/oxalica/nixos-config/blob/1b18628afda9cecca0bc8c348b91e3ae6ab56905/nixos/invar/btrbk.nix#L55
# - https://github.com/oxalica/nixos-config/blob/1b18628afda9cecca0bc8c348b91e3ae6ab56905/nixos/invar/btrbk.nix#L64
# Example2:
# - https://github.com/emmanuelrosa/erosanix/blob/master/modules/btrbk.nix#L35-L42C7
# Spin down (unmounted/inactive) HDD disk.
# Inspired by https://www.reddit.com/r/NixOS/comments/751i5t/comment/do3f3l7/
#
# environment.systemPackages = with pkgs; [
# hd-idle
# ];
# systemd.services.hd-idle = {
# description = "Spin down inactive HDD";
# wantedBy = [ "multi-user.target" ];
# serviceConfig = {
# Type = "simple";
# # Options:
# # -a <disk>: Select disk for subsequent parameters.
# # -i 180: Spin down after 2 minutes (180 seconds) of inactivity.
# ExecStart = "${pkgs.hd-idle}/bin/hd-idle -a /dev/disk/by-id/XXX-XXX-XXX -i 180"; # TODO make disk id configurable
# };
# };
services.btrbk = {
extraPackages = [ pkgs.lz4 ];
# Lowest scheduling priority.

84
modules/spin-down.nix Normal file
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@ -0,0 +1,84 @@
{ config, pkgs, ... }:
# hdparm - get/set SATA/IDE device parameters
# -q Handle the next option quietly, suppressing normal output (but not error messages).
# -I Print device information.
# -C Check the current IDE power mode status:
# unknown (drive does not support this command)
# active/idle (normal operation)
# standby (low power mode, drive has spun down)
# sleeping (lowest power mode, drive is completely shut down)
# -S Set the standby (spindown) timeout for the drive.
# The timeout specifies how long to wait in idle (with no disk activity) before turning off the motor to save power.
# The value of 0 disables spindown,
# the values from 1 to 240 specify multiples of 5 seconds
# and values from 241 to 251 specify multiples of 30 minutes.
# -y Force an IDE drive to immediately enter the low power consumption standby mode, usually causing it to spin down.
# Get power status:
# sudo hdparm -C /dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K0CPF0N1
# #=> drive state is: active/idle
#
# Spin down after 2 minutes (120s/5 = 24):
# sudo hdparm -S 24 /dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K0CPF0N1 # 4tb1
# sudo hdparm -S 24 /dev/disk/by-id/ata-WDC_WD30EFRX-68EUZN0_WD-WCC4N1173157 # 3tb1
# sudo hdparm -S 24 /dev/disk/by-id/ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0564095 # 3tb2
# #=> setting standby to 24 (2 minutes)
#
# ... after >> 2 minutes ...
#
# Query disk without waking it up:
# https://wiki.archlinux.org/title/hdparm#Querying_the_status_of_the_disk_without_waking_it_up
# sudo smartctl -i -n standby /dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K0CPF0N1
# #=> Device is in STANDBY mode, exit(2)
#
# Get power status:
# sudo hdparm -C /dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K0CPF0N1
# sudo hdparm -C /dev/disk/by-id/ata-WDC_WD30EFRX-68EUZN0_WD-WCC4N1173157
# sudo hdparm -C /dev/disk/by-id/ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0564095
# #=> drive state is: standby
# Power savings.
# With 12tb1, 3tb1, 3tb2 spinning and 4tb1 spun-down: 26.1 W
# With 12tb1 spinning and 3tb1, 3tb2, 4tb1 spun-down: 19.8 W
# -> WD30EFRX measured idle spinning vs standby = +3.15 W
# -> WD30EFRX advertised idle spinning vs unplugged = +3.0 W
# See also: Systemd service to spin down after boot. https://wiki.archlinux.org/title/hdparm#Putting_a_drive_to_sleep_directly_after_boot
# TODO: For external (USB-)disks, use `hd-idle`.
# https://www.reddit.com/r/NixOS/comments/751i5t/comment/do3f3l7/
# # Options:
# # -a <disk>: Select disk for subsequent parameters.
# # -i 180: Spin down after 2 minutes (180 seconds) of inactivity.
# ExecStart = "${pkgs.hd-idle}/bin/hd-idle -a /dev/disk/by-id/XXX-XXX-XXX -i 180";
{
environment.systemPackages = with pkgs; [
hdparm
];
systemd.services."hdparm-4tb1" = {
description = "Spin down inactive HDD";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.hdparm}/bin/hdparm -S 24 /dev/disk/by-id/ata-WDC_WD40EFRX-68N32N0_WD-WCC7K0CPF0N1";
};
};
systemd.services."hdparm-3tb1" = {
description = "Spin down inactive HDD";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.hdparm}/bin/hdparm -S 24 /dev/disk/by-id/ata-WDC_WD30EFRX-68EUZN0_WD-WCC4N1173157";
};
};
systemd.services."hdparm-3tb2" = {
description = "Spin down inactive HDD";
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.hdparm}/bin/hdparm -S 24 /dev/disk/by-id/ata-WDC_WD30EFRX-68EUZN0_WD-WMC4N0564095";
};
};
}