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Merge pull request #183314 from DeterminateSystems/optional-swraid

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Make swraid optional
This commit is contained in:
Will Fancher 2023-07-13 16:24:34 -04:00 • committed by GitHub
commit 11fec97761
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7 changed files with 63 additions and 36 deletions
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11
nixos/modules/installer/tools/nixos-generate-config.pl
View file

@ -381,6 +381,7 @@ sub in {
my $fileSystems;
my %fsByDev;
my $useSwraid = 0;
foreach my $fs (read_file("/proc/self/mountinfo")) {
chomp $fs;
my @fields = split / /, $fs;
@ -510,8 +511,8 @@ EOF
# boot.initrd.luks.devices entry.
if (-e $device) {
my $deviceName = basename(abs_path($device));
if (-e "/sys/class/block/$deviceName"
&& read_file("/sys/class/block/$deviceName/dm/uuid", err_mode => 'quiet') =~ /^CRYPT-LUKS/)
my $dmUuid = read_file("/sys/class/block/$deviceName/dm/uuid", err_mode => 'quiet');
if ($dmUuid =~ /^CRYPT-LUKS/)
{
my @slaves = glob("/sys/class/block/$deviceName/slaves/*");
if (scalar @slaves == 1) {
@ -527,8 +528,14 @@ EOF
}
}
}
if (-e "/sys/class/block/$deviceName/md/uuid") {
$useSwraid = 1;
}
}
}
if ($useSwraid) {
push @attrs, "boot.swraid.enable = true;\n\n";
}
# Generate the hardware configuration file.

2
nixos/modules/profiles/installation-device.nix
View file

@ -106,6 +106,8 @@ with lib;
systemdStage1Network
];
boot.swraid.enable = true;
# Show all debug messages from the kernel but don't log refused packets
# because we have the firewall enabled. This makes installs from the
# console less cumbersome if the machine has a public IP.

10
nixos/modules/system/boot/stage-1.nix
View file

@ -133,10 +133,6 @@ let
copy_bin_and_libs ${getBin pkgs.lvm2}/bin/dmsetup
copy_bin_and_libs ${getBin pkgs.lvm2}/bin/lvm
# Add RAID mdadm tool.
copy_bin_and_libs ${pkgs.mdadm}/sbin/mdadm
copy_bin_and_libs ${pkgs.mdadm}/sbin/mdmon
# Copy udev.
copy_bin_and_libs ${udev}/bin/udevadm
copy_bin_and_libs ${udev}/lib/systemd/systemd-sysctl
@ -225,7 +221,6 @@ let
$out/bin/udevadm --version
$out/bin/dmsetup --version 2>&1 | tee -a log | grep -q "version:"
LVM_SYSTEM_DIR=$out $out/bin/lvm version 2>&1 | tee -a log | grep -q "LVM"
$out/bin/mdadm --version
${optionalString config.services.multipath.enable ''
($out/bin/multipath || true) 2>&1 | grep -q 'need to be root'
($out/bin/multipathd || true) 2>&1 | grep -q 'need to be root'
@ -354,9 +349,6 @@ let
[ { object = bootStage1;
symlink = "/init";
}
{ object = pkgs.writeText "mdadm.conf" config.boot.initrd.services.swraid.mdadmConf;
symlink = "/etc/mdadm.conf";
}
{ object = pkgs.runCommand "initrd-kmod-blacklist-ubuntu" {
src = "${pkgs.kmod-blacklist-ubuntu}/modprobe.conf";
preferLocalBuild = true;
@ -727,6 +719,6 @@ in
};
imports = [
(mkRenamedOptionModule [ "boot" "initrd" "mdadmConf" ] [ "boot" "initrd" "services" "swraid" "mdadmConf" ])
(mkRenamedOptionModule [ "boot" "initrd" "mdadmConf" ] [ "boot" "swraid" "mdadmConf" ])
];
}

60
nixos/modules/tasks/swraid.nix
View file

@ -1,47 +1,71 @@
{ config, pkgs, lib, ... }: let
cfg = config.boot.initrd.services.swraid;
cfg = config.boot.swraid;
in {
options.boot.initrd.services.swraid = {
options.boot.swraid = {
enable = lib.mkEnableOption (lib.mdDoc "swraid support using mdadm") // {
description = ''
*This will only be used when systemd is used in stage 1.*
description = lib.mdDoc ''
Whether to enable support for Linux MD RAID arrays.
Whether to enable swraid support using mdadm.
When this is enabled, mdadm will be added to the system path,
and MD RAID arrays will be detected and activated
automatically, both in stage-1 (initramfs) and in stage-2 (the
final NixOS system).
This should be enabled if you want to be able to access and/or
boot from MD RAID arrays. {command}`nixos-generate-config`
should detect it correctly in the standard installation
procedure.
'';
default = lib.versionOlder config.system.stateVersion "23.11";
defaultText = lib.mdDoc "`true` if stateVersion is older than 23.11";
};
mdadmConf = lib.mkOption {
description = lib.mdDoc "Contents of {file}`/etc/mdadm.conf` in initrd.";
description = lib.mdDoc "Contents of {file}`/etc/mdadm.conf`.";
type = lib.types.lines;
default = "";
};
};
config = {
config = lib.mkIf cfg.enable {
environment.systemPackages = [ pkgs.mdadm ];
services.udev.packages = [ pkgs.mdadm ];
systemd.packages = [ pkgs.mdadm ];
boot.initrd.availableKernelModules = lib.mkIf (config.boot.initrd.systemd.enable -> cfg.enable) [ "md_mod" "raid0" "raid1" "raid10" "raid456" ];
boot.initrd = {
availableKernelModules = [ "md_mod" "raid0" "raid1" "raid10" "raid456" ];
boot.initrd.extraUdevRulesCommands = lib.mkIf (!config.boot.initrd.systemd.enable) ''
cp -v ${pkgs.mdadm}/lib/udev/rules.d/*.rules $out/
'';
extraUdevRulesCommands = lib.mkIf (!config.boot.initrd.systemd.enable) ''
cp -v ${pkgs.mdadm}/lib/udev/rules.d/*.rules $out/
'';
boot.initrd.systemd = lib.mkIf cfg.enable {
contents."/etc/mdadm.conf" = lib.mkIf (cfg.mdadmConf != "") {
text = cfg.mdadmConf;
extraUtilsCommands = ''
# Add RAID mdadm tool.
copy_bin_and_libs ${pkgs.mdadm}/sbin/mdadm
copy_bin_and_libs ${pkgs.mdadm}/sbin/mdmon
'';
extraUtilsCommandsTest = ''
$out/bin/mdadm --version
'';
extraFiles."/etc/mdadm.conf".source = pkgs.writeText "mdadm.conf" config.boot.swraid.mdadmConf;
systemd = {
contents."/etc/mdadm.conf" = lib.mkIf (cfg.mdadmConf != "") {
text = cfg.mdadmConf;
};
packages = [ pkgs.mdadm ];
initrdBin = [ pkgs.mdadm ];
};
packages = [ pkgs.mdadm ];
initrdBin = [ pkgs.mdadm ];
services.udev.packages = [ pkgs.mdadm ];
};
boot.initrd.services.udev.packages = lib.mkIf cfg.enable [ pkgs.mdadm ];
};
}