hosts/oignon/hardware.nix

   1 { config, lib, pkgs, hostName, ... }:
   2 {
   3 hardware.cpu.intel.updateMicrocode = true;
   4 hardware.opengl.extraPackages = [
   5   pkgs.intel-media-driver # LIBVA_DRIVER_NAME=iHD
   6   pkgs.vaapiIntel         # LIBVA_DRIVER_NAME=i965 (older but works better for Firefox/Chromium)
   7   pkgs.vaapiVdpau
   8   pkgs.libvdpau-va-gl
   9 ];
  10 powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
  11 services.thinkfan = {
  12   enable = true;
  13   smartSupport = true;
  14   levels = [
  15     [0     0      57]
  16     [1     56     62]
  17     [2     61     65]
  18     [3     64     66]
  19     [4     65     68]
  20     [5     67     71]
  21     [6     70     76]
  22     [7     75     81]
  23     [127   80     32767]
  24   ];
  25 };
  26 hardware.acpilight.enable = true;
  27 services.acpid = {
  28   enable = true;
  29   handlers = {
  30     brightnessDown = {
  31       event = "video/brightnessdown.*";
  32       action = "${pkgs.acpilight}/bin/xbacklight -dec 5";
  33     };
  34     brightnessUp = {
  35       event = "video/brightnessup.*";
  36       action = "${pkgs.acpilight}/bin/xbacklight -inc 5";
  37     };
  38     acAdapter = {
  39       event = "ac_adapter/*";
  40       action = ''
  41         vals=($1)
  42         case ''${vals[3]} in
  43           00000000) # unplugged
  44             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g powersave;;
  45           00000001) # plugged in
  46             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g ondemand;;
  47         esac
  48       '';
  49     };
  50   };
  51 };
  52
  53 # https://bugzilla.kernel.org/show_bug.cgi?id=110941
  54 boot.kernelParams = [ "intel_pstate=no_hwp" ];
  55 boot.kernelModules = [ "kvm-intel" ];
  56 boot.cleanTmpDir = true;
  57 boot.tmpOnTmpfs = true;
  58 boot.extraModulePackages = [
  59   #config.boot.kernelPackages.exfat-nofuse
  60 ];
  61 boot.loader.grub = {
  62   enable  = true;
  63   version = 2;
  64   device  = "/dev/disk/by-id/ata-Samsung_SSD_850_PRO_128GB_S1SMNSAFC36436X";
  65   configurationLimit = 3;
  66   #zfsSupport = true;
  67   /*
  68   efiSupport = true;
  69   efi = {
  70     canTouchEfiVariables = false;
  71     efiSysMountPoint = "/boot/efi";
  72   };
  73   */
  74   #enableCryptodisk = true;
  75 };
  76
  77 fileSystems."/boot" =
  78   { device = "/dev/disk/by-partlabel/${hostName}_ssd_boot";
  79     fsType = "ext2";
  80   };
  81 fileSystems."/boot/efi" =
  82   { device = "/dev/disk/by-partlabel/${hostName}_ssd_efi";
  83     fsType = "vfat";
  84   };
  85 swapDevices = [
  86   { device = "/dev/disk/by-partlabel/${hostName}_ssd_swap";
  87     randomEncryption = {
  88       enable = true;
  89       cipher = "aes-xts-plain64";
  90       source = "/dev/urandom";
  91     };
  92   }
  93 ];
  94 zramSwap = {
  95   enable = true;
  96   algorithm = lib.mkDefault "zstd";
  97   # There is little point creating a zram of greater
  98   # than twice the size of memory
  99   # since we expect a 2:1 compression ratio.
 100   # Note that zram uses about 0.1% of the size of the disk
 101   # when not in use so a huge zram is wasteful.
 102   memoryPercent = lib.mkDefault 150;
 103   # Linux supports multithreaded compression for 1 device since 3.15.
 104   # See https://lkml.org/lkml/2014/2/28/404 for details.
 105   swapDevices = lib.mkDefault 1;
 106 };
 107 boot.kernel.sysctl = {
 108   # Increase cache pressure, which increases the tendency of the kernel to
 109   # reclaim memory used for caching of directory and inode objects. You will use
 110   # less memory over a longer period of time. The performance hit is negated by
 111   # the downside of swapping sooner.
 112   "vm.vfs_cache_pressure" = lib.mkDefault 500;
 113
 114   # Increasing how aggressively the kernel will swap memory pages since we are
 115   # using ZRAM first.
 116   "vm.swappiness" = lib.mkDefault 100;
 117
 118   # Background processes will start writing right away when it hits the 1% limit
 119   "vm.dirty_background_ratio" = lib.mkDefault 1;
 120
 121   # The system won’t force synchronous I/O until it gets to 50% dirty_ratio.
 122   "vm.dirty_ratio" = lib.mkDefault 50;
 123 };
 124
 125 # The 32-bit host id of the host, formatted as 8 hexadecimal characters.
 126 # You should try to make this id unique among your hosts.
 127 # Manually generated with : head -c4 /dev/urandom | od -A none -t x4 | cut -d ' ' -f 2
 128 networking.hostId = "ce53d0c3";
 129
 130 # none is the recommended elevator with ZFS (which has its own I/O scheduler)
 131 # and/or for SSD, whereas HDD could use mq-deadline.
 132 services.udev.extraRules = ''
 133   # set none scheduler for non-rotating disks
 134   ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="none"
 135 '';
 136
 137 boot.supportedFilesystems = [ "ntfs" "vfat" "zfs" ];
 138 boot.initrd.supportedFilesystems = [ "zfs" ];
 139 boot.initrd.availableKernelModules = [
 140   "ahci"
 141   "drbg"
 142   "ehci_pci"
 143   "gf128mul"
 144   "hmac"
 145   "sd_mod"
 146 ];
 147
 148 boot.zfs.forceImportAll  = false;
 149 boot.zfs.forceImportRoot = false;
 150 boot.zfs.enableUnstable = false;
 151 boot.zfs.requestEncryptionCredentials = [ hostName ];
 152 services.zfs.autoScrub.enable = true;
 153
 154 fileSystems."/" =
 155   { device = "${hostName}/root";
 156     fsType = "zfs";
 157   };
 158 fileSystems."/nix" =
 159   { device = "${hostName}/nix";
 160     fsType = "zfs";
 161   };
 162 fileSystems."/var" =
 163   { device = "${hostName}/var";
 164     fsType = "zfs";
 165   };
 166
 167 }