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refactor: btrfs-scrub module

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This commit is contained in:
Daniel Langbein 2023-10-08 22:02:21 +02:00
parent 9c722985e4
commit 3439bd5ac5
Signed by: langfingaz
GPG Key ID: 6C47C753F0823002
6 changed files with 53 additions and 21 deletions
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3
hosts/yodaNas/configuration.nix
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@ -59,10 +59,13 @@ in
#../../modules/veracrypt.nix
../../modules/btrbk
../../modules/spin-down.nix
../../modules/btrfs-scrub.nix
];
networking.hostName = "yodaNas";
boot.initrd.luks.devices."luks-3d974bd0-f373-469b-8e9c-2d5516e9f0f5".allowDiscards = true;
yoda.btrfs-scrub = ["/" "/mnt/data" "/mnt/backup"];
boot.kernelParams = [];

3
hosts/yodaTab/configuration.nix
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@ -58,11 +58,14 @@ in
#../../modules/veracrypt.nix
#../../modules/btrbk
#../../modules/spin-down.nix
../../modules/btrfs-scrub.nix
];
networking.hostName = "yodaTab";
boot.initrd.luks.devices."luks-ba8b94d0-7f70-496a-ad87-eadc5e852aad".allowDiscards = true;
boot.initrd.luks.devices."512gb".allowDiscards = true;
yoda.btrfs-scrub = ["/"];
boot.kernelParams = [];

3
hosts/yodaTux/configuration.nix
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@ -58,10 +58,13 @@ in
#../../modules/veracrypt.nix
#../../modules/btrbk
#../../modules/spin-down.nix
../../modules/btrfs-scrub.nix
];
networking.hostName = "yodaTux";
boot.initrd.luks.devices."luks-ea7099e3-320d-4eb3-a4c3-9910a9af817b".allowDiscards = true;
yoda.btrfs-scrub = ["/"];
# Systemd Journal entry:
# S Sat Sep 23 16:11:52 2023 p4 kernel: TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'.

3
hosts/yodaYoga/configuration.nix
View File

@ -59,10 +59,13 @@ in
#../../modules/veracrypt.nix
#../../modules/btrbk
#../../modules/spin-down.nix
../../modules/btrfs-scrub.nix
];
networking.hostName = "yodaYoga";
boot.initrd.luks.devices."luks-a8521407-e25b-4f26-8e7a-a56fcbfd2e35".allowDiscards = true;
yoda.btrfs-scrub = ["/"];
boot.kernelParams = [];

21
modules/base.nix
View File

@ -98,27 +98,6 @@
"/".options = [ "compress=zstd" "noatime" "commit=120" ];
};
# BTRFS scrub.
#
# Scrubbing is the process of checking file consistency.
# Scrubbing may be done "online", meaning you don't need to unmount a subvolume to scrub it.
# https://nixos.wiki/wiki/Btrfs#Scrubbing
# Btrfs scrub is "[a]n online filesystem checking tool. Reads all the data and metadata on the filesystem and uses checksums and the duplicate copies from RAID storage to identify and repair any corrupt data."
# https://wiki.archlinux.org/title/btrfs#Scrub
# The scrub command operates on a whole filesystem, not just individual subvolumes.
# https://unix.stackexchange.com/a/724412
#
# As this command reads all data, it wears down the disk. One should not run it too often. For large, slow disks once per month should be fine.
#
# To run it manually:
# sudo btrfs scrub start /
# sudo btrfs scrub status /
services.btrfs.autoScrub = {
enable = true;
interval = "monthly";
fileSystems = [ "/" ];
};
nix.settings.auto-optimise-store = true;
# https://nixos.wiki/wiki/Storage_optimization#Automation

41
modules/btrfs-scrub.nix Normal file
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@ -0,0 +1,41 @@
# BTRFS scrub.
#
# Scrubbing is the process of checking file consistency.
# Scrubbing may be done "online", meaning you don't need to unmount a subvolume to scrub it.
# https://nixos.wiki/wiki/Btrfs#Scrubbing
# Btrfs scrub is "[a]n online filesystem checking tool. Reads all the data and metadata on the filesystem and uses checksums and the duplicate copies from RAID storage to identify and repair any corrupt data."
# https://wiki.archlinux.org/title/btrfs#Scrub
# The scrub command operates on a whole filesystem, not just individual subvolumes.
# https://unix.stackexchange.com/a/724412
#
# As this command reads all data, it wears down the disk. One should not run it too often. For large, slow disks once per month should be fine.
#
# To run it manually:
# sudo btrfs scrub start /
# sudo btrfs scrub status /
{ lib, config, options, pkgs, modulesPath, ... }:
with lib;
let
cfg = config.yoda.btrfs-scrub;
in
{
options = {
yoda.btrfs-scrub = mkOption {
type = types.listOf types.path;
default = ["/"];
example = ["/" "/mnt/data"];
description = ''
List containing each mounted BTRFS filesystem once.
'';
};
};
config = mkIf (length cfg > 0) {
services.btrfs.autoScrub = {
enable = true;
interval = "monthly";
fileSystems = cfg;
};
};
}