nixos-config/hosts/nasbackup/hardware-configuration.nix

# Hardware settings for Teclast F5 10" Laptop
# NixOS @ sda2
#
# flake.nix
#  └─ ./hosts
#      └─ ./laptop
#          └─ hardware-configuration.nix *
#
# Do not modify this file!  It was generated by ‘nixos-generate-config’
# and may be overwritten by future invocations.  Please make changes
# to /etc/nixos/configuration.nix instead.
{
  config,
  lib,
  pkgs,
  modulesPath,
  ...
}: {
  imports = [
    (modulesPath + "/profiles/qemu-guest.nix")
  ];

  boot.initrd.availableKernelModules = ["xhci_pci" "ahci" "nvme" "usb_storage" "usbhid" "sd_mod"];
  boot.initrd.kernelModules = ["vfio_pci" "vfio" "vfio_iommu_type1"];
  boot.initrd.secrets = {
    "/root/NASKeyfile" =
      /root/NASKeyfile;
  };
  boot.initrd.luks.devices = {
    NAS-RAID1 = {
      device = "/dev/disk/by-uuid/57e6446d-faca-4b67-9063-e8d9afb80088";
      keyFile = "/root/NASKeyfile";
      bypassWorkqueues = true;
    };
    NAS-RAID2 = {
      device = "/dev/disk/by-uuid/b9edc489-ac37-4b28-981d-442722df7ae2";
      keyFile = "/root/NASKeyfile";
      bypassWorkqueues = true;
    };
  };
  boot.kernelModules = ["kvm-intel"];
  boot.extraModulePackages = [];
  boot.tmp.useTmpfs = false;
  boot.tmp.cleanOnBoot = true;
  zramSwap.enable = true;

  services.btrfs.autoScrub = {
    enable = true;
    interval = "monthly";
    fileSystems = [
      "/"
      "/mnt/nas"
    ];
  };

  services.btrbk = {
    extraPackages = [pkgs.lz4 pkgs.mbuffer];
    instances = {
      hf = {
        onCalendar = "hourly";
        settings = {
          incremental = "yes";
          snapshot_create = "ondemand";
          snapshot_dir = "@snapshots";
          timestamp_format = "long";

          snapshot_preserve = "2m 2w 5d 5h";
          snapshot_preserve_min = "latest";

          volume = {
            "/mnt/snapshots/root" = {
              snapshot_create = "always";
              subvolume = {
                "@" = {};
                "@home" = {};
              };
            };
          };
        };
      };
      bak = {
        onCalendar = "weekly";
        settings = {
          stream_buffer = "265m";
          stream_compress = "lz4";
          incremental = "yes";
          snapshot_create = "no";
          snapshot_dir = "@snapshots";
          timestamp_format = "long";

          snapshot_preserve_min = "all";
          target_preserve_min = "no";
          target_preserve = "4w 2m";
          archive_preserve_min = "no";
          archive_preserve = "4w 2m";

          ssh_identity = "/etc/btrbk/ssh/id_ed25519_btrbk";
          ssh_user = "btrbk";

          volume = {
            "ssh://jupiter.home.opel-online.de:2220/mnt/snapshots/Mars" = {
              subvolume = {
                "@nas" = {
                  target = "/mnt/nas/Backups/Mars";
                };
                "@hades/@home" = {
                  target = "/mnt/nas/Backups/Hades";
                  snapshot_dir = "@snapshots/@hades";
                };
                "@lifebook/@home" = {
                  target = "/mnt/nas/Backups/Lifebook";
                  snapshot_dir = "@snapshots/@lifebook";
                };
                #                              "@steamdeck/@home" = {
                #				  target = "/mnt/nas/Backups/Steamdeck";
                #				  snapshot_dir = "@snapshots/@steamdeck";
                #			      };
              };
            };
          };
          volume = {
            "ssh://jupiter.home.opel-online.de:2220/mnt/snapshots/Pluto" = {
              target = "/mnt/nas/Backups/Pluto";
              subvolume = {
                "@/Games" = {};
                "@/IT" = {};
                "@/Media" = {};
                "@/Pictures" = {};
                "@/Rest" = {};
              };
            };
          };
        };
      };
    };
  };

  systemd.services = {
    btrbk-bak = {
      after = ["network-online.target"];
      requires = ["network-online.target"];
    };
  };

  fileSystems."/" = {
    device = "/dev/disk/by-label/NIXROOT";
    fsType = "btrfs";
    options = ["compress=zstd,space_cache=v2,ssd,noatime,subvol=@,discard=async"];
  };

  fileSystems."/home" = {
    device = "/dev/disk/by-label/NIXROOT";
    fsType = "btrfs";
    options = ["compress=zstd,space_cache=v2,ssd,noatime,subvol=@home,discard=async"];
  };

  fileSystems."/srv" = {
    device = "/dev/disk/by-label/NIXROOT";
    fsType = "btrfs";
    options = ["compress=zstd,space_cache=v2,ssd,noatime,subvol=@srv,discard=async"];
  };

  fileSystems."/nix" = {
    device = "/dev/disk/by-label/NIXROOT";
    fsType = "btrfs";
    options = ["compress=zstd,space_cache=v2,ssd,noatime,subvol=@nix,discard=async"];
  };

  fileSystems."/swap" = {
    device = "/dev/disk/by-label/NIXROOT";
    fsType = "btrfs";
    options = ["compress=zstd,space_cache=v2,ssd,noatime,subvol=@swap,discard=async"];
  };

  fileSystems."/mnt/snapshots/root" = {
    device = "/dev/disk/by-label/NIXROOT";
    fsType = "btrfs";
    options = ["compress=zstd,space_cache=v2,ssd,noatime,subvolid=5,discard=async"];
  };

  #  fileSystems."/mnt/snapshots/Pluto" =
  #    { device = "/dev/disk/by-label/NAS-RAID";
  #      fsType = "btrfs";
  #      options = [ "compress=zstd,space_cache=v2,noatime,subvolid=5" ];
  #    };
  #
  fileSystems."/mnt/nas" = {
    device = "/dev/disk/by-uuid/70523c79-ef5c-40f2-8782-60fc86bb445b";
    fsType = "btrfs";
    options = ["compress=zstd:9,space_cache=v2,noatime,subvol=@nasbak"];
  };

  fileSystems."/boot" = {
    device = "/dev/disk/by-label/NIXBOOT";
    fsType = "vfat";
  };

  swapDevices = [{device = "/swap/swapfile";}];

  systemd.network = {
    enable = true;
    networks = {
      "10-lan" = {
        matchConfig.Name = "ens18";
        ntp = ["192.168.2.1"];
        domains = ["home.opel-online.de"];
        networkConfig = {
          DHCP = "yes";
          IPv6AcceptRA = true;
        };
      };
    };
  };
  networking = {
    hostName = "nasbak";
    domain = "home.opel-online.de";
    useDHCP = false; # For versatility sake, manually edit IP on nm-applet.
    #firewall = {
    #  enable = false;
    #  #allowedUDPPorts = [ 53 67 ];
    #  #allowedTCPPorts = [ 53 80 443 9443 ];
    #};
  };

  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
  powerManagement = {
    cpuFreqGovernor = lib.mkDefault "powersave";
    powertop.enable = true;
    #    powerUpCommands = ''
    #      ${pkgs.hdparm}/sbin/hdparm -S 150 /dev/disk/by-uuid/57e6446d-faca-4b67-9063-e8d9afb80088
    #      ${pkgs.hdparm}/sbin/hdparm -S 150 /dev/disk/by-uuid/b9edc489-ac37-4b28-981d-442722df7ae2
    #    '';
  };
}