148 lines
3.5 KiB
Nix
148 lines
3.5 KiB
Nix
{
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config,
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lib,
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system,
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namespace,
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...
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}:
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let
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cfg = config.${namespace}.hardware.disko;
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isArm = builtins.match "aarch64*" system != null;
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rootDisk = "/dev/nvme0n1";
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# BTRFS root partition configuration
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btrfsRoot = {
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name = "btrfs-root";
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size = "100%";
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content = {
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type = "btrfs";
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extraArgs = [ "-f" ]; # Override existing partition
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# Subvolumes must set a mountpoint in order to be mounted,
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# unless their parent is mounted
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subvolumes = {
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"home" = {
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mountOptions = [ "compress=zstd" ];
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mountpoint = "/home";
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};
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"root" = {
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mountOptions = [
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"compress=zstd"
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"noatime"
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];
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mountpoint = "/root";
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};
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"nix" = {
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mountOptions = [
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"compress=zstd"
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"noatime"
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];
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mountpoint = "/nix";
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};
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"etc" = {
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mountOptions = [
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"compress=zstd"
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"noatime"
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];
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mountpoint = "/etc";
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};
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"log" = {
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mountOptions = [
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"compress=zstd"
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"noatime"
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];
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mountpoint = "/var/log";
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};
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};
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};
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};
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# BCacheFS root partition configuration
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bcachefsRoot = {
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size = "100%";
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content = {
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type = "bcachefs";
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# This refers to a filesystem in the `bcachefs_filesystems` attrset below.
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filesystem = "mounted_subvolumes_in_multi";
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label = "ssd.ssd1";
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extraFormatArgs = [
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"--discard"
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];
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};
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};
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in
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{
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imports = [ ../options.nix ];
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config = lib.mkIf (isArm && cfg.enable) {
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disko.devices = {
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# root disk setup
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disk.main = {
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type = "disk";
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device = rootDisk;
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imageSize = "15G";
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content = {
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type = "gpt";
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# specify partitions
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partitions = {
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# /boot/firmware
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FIRMWARE = {
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priority = 1;
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name = "FIRMWARE";
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start = "1M";
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end = "1G";
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type = "0700";
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content = {
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type = "filesystem";
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format = "vfat";
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mountpoint = "/boot/firmware";
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mountOptions = [ "umask=0077" ];
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};
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};
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# /boot
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ESP = {
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priority = 2;
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name = "ESP";
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# start = "1G";
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# end = "2G";
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size = "1G";
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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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mountpoint = "/boot";
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mountOptions = [ "umask=0077" ];
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};
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};
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root = if cfg.filesystem == "btrfs" then btrfsRoot else bcachefsRoot;
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};
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};
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};
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bcachefs_filesystems = lib.mkIf (cfg.filesystem == "bcachefs") {
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mounted_subvolumes_in_multi = {
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type = "bcachefs_filesystem";
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# passwordFile = "/etc/nixos/pool.jwe";
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extraFormatArgs = [
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"--compression=zstd"
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];
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subvolumes = {
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"/root" = {
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mountpoint = "/";
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};
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"/persistent" = {
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mountpoint = "/persistent";
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};
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"/nix" = {
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mountOptions = [
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"noatime"
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];
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mountpoint = "/nix";
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};
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};
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mountpoint = "/partition-root";
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};
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};
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};
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};
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}
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