120 lines
3 KiB
Nix
120 lines
3 KiB
Nix
{
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config,
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lib,
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...
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}: let
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cfg = config.disko;
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mkEfiPartition = mountpoint: {
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size = "1024M";
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type = "EF00";
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content = {
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type = "filesystem";
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format = "vfat";
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inherit mountpoint;
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mountOptions = [
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"uid=0"
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"gid=0"
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"fmask=0077"
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"dmask=0077"
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"nodev"
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"nosuid"
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"noexec"
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"x-systemd.idle-timeout=1min"
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"x-systemd.automount"
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"noauto"
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"nofail"
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"noatime"
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"X-mount.mkdir"
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];
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};
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};
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label = "btrfs-raid1";
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subvolumes = {
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"/root" = {
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mountpoint = "/";
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mountOptions = ["degraded" "compress-force=zstd:1" "noatime"];
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};
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"/home" = {
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mountpoint = "/home";
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mountOptions = ["degraded" "compress-force=zstd:1" "noatime" "nodev" "nosuid"];
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};
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"/nix" = {
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mountpoint = "/nix";
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mountOptions = ["degraded" "compress-force=zstd:1" "noatime" "nodev"];
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};
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"/log" = {
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mountpoint = "/var/log";
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mountOptions = ["degraded" "compress-force=zstd:1" "noatime" "nodev" "nosuid"];
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};
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"/persist" = {
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mountpoint = "/persist";
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mountOptions = ["degraded" "compress-force=zstd:1" "noatime" "nodev" "nosuid"];
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};
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};
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in {
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disko.devices = {
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disk = {
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disk1 = {
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type = "disk";
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device = "/dev/sda";
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content = {
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type = "gpt";
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partitions = {
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boot = {
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size = "1M";
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type = "EF02"; # for grub MBR
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};
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ESP = mkEfiPartition "/boot";
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nixos = {
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size = "100%";
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};
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};
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};
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};
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disk2 = {
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type = "disk";
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device = "/dev/sdb";
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content = {
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type = "gpt";
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partitions = {
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boot = {
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size = "1M";
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type = "EF02"; # for grub MBR
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};
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ESP = mkEfiPartition "/boot1";
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nixos = {
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size = "100%";
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content = let
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thisPartition = cfg.devices.disk.disk2.content.partitions.nixos.device;
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mirror = cfg.devices.disk.disk1.content.partitions.nixos.device;
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in {
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type = "btrfs";
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extraArgs = [
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"-f"
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"--label ${label}"
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"-m raid1"
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"-d raid1"
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"${mirror}"
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];
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postCreateHook = ''
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mountpoint="$(mktemp -d)"
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mount "${thisPartition}" "$mountpoint" -o subvol=/ || mount "${mirror}" "$mountpoint" -o subvol=/
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trap 'umount "$mountpoint"; rmdir "$mountpoint"' EXIT
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btrfs subvolume snapshot -r $mountpoint/root $mountpoint/root-blank
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'';
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inherit subvolumes;
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};
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};
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};
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};
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};
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};
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};
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fileSystems = with lib.attrsets;
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mapAttrs' (
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_: value:
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nameValuePair value.mountpoint {device = lib.mkForce "/dev/disk/by-label/${label}";}
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)
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subvolumes;
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}
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