70 lines
1.8 KiB
Nix
70 lines
1.8 KiB
Nix
{ inputs, config, pkgs, lib, ... }:
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let
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zfs_arc_max = toString (2 * 1024 * 1024 * 1024);
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in {
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boot = {
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kernelPackages = pkgs.linuxPackages_xanmod_latest;
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zfs.package = pkgs.zfs_unstable;
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initrd = {
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supportedFilesystems = [ "zfs" ];
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luks.devices = {
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"cryptroot" = {
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keyFile = "/keyfile0.bin";
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allowDiscards = true;
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bypassWorkqueues = true;
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};
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};
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secrets = {
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"keyfile0.bin" = "/etc/secrets/keyfile0.bin";
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};
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};
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loader = {
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grub = {
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enable = true;
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device = "nodev";
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copyKernels = true;
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efiSupport = true;
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enableCryptodisk = true;
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useOSProber = false;
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zfsSupport = true;
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};
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systemd-boot.enable = lib.mkForce false;
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efi.canTouchEfiVariables = true;
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efi.efiSysMountPoint = "/efi";
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generationsDir.copyKernels = true;
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};
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kernelParams = [
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"zfs.metaslab_lba_weighting_enabled=0"
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"zfs.zfs_arc_max=${zfs_arc_max}"
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];
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tmp.useTmpfs = true;
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tmp.tmpfsSize = "4G";
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};
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persist = {
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enable = true;
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cache.clean.enable = true;
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};
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fileSystems."/home".neededForBoot = true;
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fileSystems."/persist".neededForBoot = true;
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boot.initrd.systemd.enable = true;
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boot.initrd.systemd.services.rollback = {
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description = "Rollback zfs to a pristine state on boot";
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wantedBy = [ "initrd.target" ];
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after = [ "zfs-import-rpool.service" ];
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before = [ "sysroot.mount" ];
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path = [ config.boot.zfs.package ];
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unitConfig.DefaultDependencies = "no";
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serviceConfig.Type = "oneshot";
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script = ''
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zfs rollback -r rpool/nixos/root@empty && echo " >>> rollback root <<<"
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zfs rollback -r rpool/user/home@empty && echo " >>> rollback home <<<"
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'';
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};
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}
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