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88 lines
2.8 KiB
Nix
88 lines
2.8 KiB
Nix
{ config, pkgs, lib, ... }: let
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cfg = config.boot.swraid;
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mdadm_conf = config.environment.etc."mdadm.conf";
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enable_implicitly_for_old_state_versions = lib.versionOlder config.system.stateVersion "23.11";
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minimum_config_is_set = config_text:
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(builtins.match ".*(MAILADDR|PROGRAM).*" mdadm_conf.text) != null;
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in {
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imports = [
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(lib.mkRenamedOptionModule [ "boot" "initrd" "services" "swraid" "enable" ] [ "boot" "swraid" "enable" ])
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(lib.mkRenamedOptionModule [ "boot" "initrd" "services" "swraid" "mdadmConf" ] [ "boot" "swraid" "mdadmConf" ])
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];
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options.boot.swraid = {
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enable = lib.mkEnableOption (lib.mdDoc "swraid support using mdadm") // {
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description = lib.mdDoc ''
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Whether to enable support for Linux MD RAID arrays.
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When this is enabled, mdadm will be added to the system path,
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and MD RAID arrays will be detected and activated
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automatically, both in stage-1 (initramfs) and in stage-2 (the
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final NixOS system).
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This should be enabled if you want to be able to access and/or
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boot from MD RAID arrays. {command}`nixos-generate-config`
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should detect it correctly in the standard installation
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procedure.
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'';
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default = enable_implicitly_for_old_state_versions;
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defaultText = lib.mdDoc "`true` if stateVersion is older than 23.11";
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};
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mdadmConf = lib.mkOption {
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description = lib.mdDoc "Contents of {file}`/etc/mdadm.conf`.";
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type = lib.types.lines;
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default = "";
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};
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};
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config = lib.mkIf cfg.enable {
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warnings = lib.mkIf
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( !enable_implicitly_for_old_state_versions && !minimum_config_is_set mdadm_conf)
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[ "mdadm: Neither MAILADDR nor PROGRAM has been set. This will cause the `mdmon` service to crash." ];
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environment.systemPackages = [ pkgs.mdadm ];
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environment.etc."mdadm.conf".text = lib.mkAfter cfg.mdadmConf;
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services.udev.packages = [ pkgs.mdadm ];
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systemd.packages = [ pkgs.mdadm ];
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boot.initrd = {
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availableKernelModules = [ "md_mod" "raid0" "raid1" "raid10" "raid456" ];
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extraUdevRulesCommands = lib.mkIf (!config.boot.initrd.systemd.enable) ''
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cp -v ${pkgs.mdadm}/lib/udev/rules.d/*.rules $out/
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'';
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extraUtilsCommands = lib.mkIf (!config.boot.initrd.systemd.enable) ''
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# Add RAID mdadm tool.
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copy_bin_and_libs ${pkgs.mdadm}/sbin/mdadm
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copy_bin_and_libs ${pkgs.mdadm}/sbin/mdmon
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'';
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extraUtilsCommandsTest = lib.mkIf (!config.boot.initrd.systemd.enable) ''
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$out/bin/mdadm --version
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'';
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extraFiles."/etc/mdadm.conf".source = pkgs.writeText "mdadm.conf" mdadm_conf.text;
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systemd = {
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contents."/etc/mdadm.conf".text = mdadm_conf.text;
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packages = [ pkgs.mdadm ];
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initrdBin = [ pkgs.mdadm ];
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};
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services.udev.packages = [ pkgs.mdadm ];
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};
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};
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}
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