servers/mermet/apu2e4.nix

   1 { pkgs, lib, config, ... }:
   2 {
   3   hardware.cpu.amd.updateMicrocode = true;
   4
   5   boot.kernel = {
   6     sysctl = {
   7       "vm.swappiness" = 10;
   8       "vm.vfs_cache_pressure" = 50;
   9     };
  10   };
  11
  12   boot.loader = {
  13     grub = {
  14       enable = true;
  15       version = 2;
  16       copyKernels = true;
  17       # efiSupport = true;
  18       devices = [
  19         "/dev/disk/by-id/ata-Samsung_SSD_840_EVO_250GB_S1DBNSAF340110R"
  20       ];
  21       /*
  22       mirroredBoots = [
  23         { devices = [ "${disk_id}" ];
  24           path    = "/boot${bootnum}";
  25         }
  26       ];
  27       */
  28     };
  29     /*
  30     efi = {
  31       canTouchEfiVariables = true;
  32       efiSysMountPoint = "/boot/efi";
  33       efiInstallAsRemovable = false;
  34     };
  35     */
  36   };
  37
  38   boot.initrd = {
  39     availableKernelModules = [
  40       "ahci"
  41       "ehci_pci"
  42       "sd_mod"
  43       "uas"
  44       # Ethernet driver
  45       "igb"
  46       # Made the AES modules available at initrd,
  47       # to speedup the deciphering of the root.
  48       "aes_x86_64"
  49       "aesni_intel"
  50       "cryptd"
  51     ];
  52     kernelModules = [ ];
  53
  54   };
  55   boot.kernelModules = [ ];
  56   boot.extraModulePackages = [ ];
  57   boot.kernelParams = [
  58     "gfxpayload=text"
  59     #"console=tty0"
  60     "console=ttyS0,115200n8"
  61     "zfs.zfs_arc_max=262144000" # 250Mo
  62   ];
  63
  64   fileSystems."/boot" =
  65     { device = "/dev/disk/by-uuid/dc3c5387-17d2-43b3-bfa2-bf73afacca07";
  66       fsType = "ext2";
  67     };
  68
  69   fileSystems."/boot/efi" =
  70     { device = "/dev/disk/by-uuid/62E6-E65F";
  71       fsType = "vfat";
  72     };
  73
  74   swapDevices =
  75     [ { device = "/dev/disk/by-partuuid/6b1eaa35-776b-4e60-b21e-7bcee535dd8b";
  76         randomEncryption = {
  77           enable = true;
  78           cipher = "aes-xts-plain64";
  79           source = "/dev/urandom";
  80         };
  81       }
  82     ];
  83
  84   nix.maxJobs = lib.mkDefault 4;
  85   powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
  86
  87   environment = {
  88     systemPackages = with pkgs; [
  89       pciutils
  90       flashrom
  91     ];
  92   };
  93 }