hosts/patate/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     60]
  17     [2     59     63]
  18     [3     62     65]
  19     [4     64     67]
  20     [5     66     72]
  21     [6     71     78]
  22     [7     77     82]
  23     [127   81     32767]
  24   ];
  25 };
  26
  27 # https://bugzilla.kernel.org/show_bug.cgi?id=110941
  28 boot.kernelParams = [ "intel_pstate=no_hwp" ];
  29 boot.kernelModules = [ "kvm-intel" ];
  30 boot.cleanTmpDir = true;
  31 boot.tmpOnTmpfs = true;
  32 boot.extraModulePackages = [
  33   #config.boot.kernelPackages.exfat-nofuse
  34 ];
  35 # No pstore backend available on this system.
  36 systemd.services.mount-pstore.enable = false;
  37 boot.loader.grub = {
  38   enable  = true;
  39   version = 2;
  40   device  = "/dev/disk/by-id/ata-CT250MX500SSD1_2004E2849DD1";
  41   configurationLimit = 3;
  42 };
  43 services.acpid = {
  44   enable = true;
  45   handlers = {
  46     brightnessDown = {
  47       event = "video/brightnessdown.*";
  48       action = "${pkgs.acpilight}/bin/xbacklight -dec 10";
  49     };
  50     brightnessUp = {
  51       event = "video/brightnessup.*";
  52       action = "${pkgs.acpilight}/bin/xbacklight -inc 10";
  53     };
  54   };
  55   acEventCommands = ''
  56     vals=($1)
  57     case ''${vals[3]} in
  58       00000000) # unplugged
  59         ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g powersave;;
  60       00000001) # plugged in
  61         ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g ondemand;;
  62     esac
  63   '';
  64 };
  65
  66 fileSystems."/boot" =
  67   { device = "/dev/disk/by-partlabel/${hostName}_ssd_boot";
  68     fsType = "ext2";
  69   };
  70 fileSystems."/boot/efi" =
  71   { device = "/dev/disk/by-partlabel/${hostName}_ssd_efi";
  72     fsType = "vfat";
  73   };
  74 swapDevices = [
  75   { device = "/dev/disk/by-partlabel/${hostName}_ssd_swap";
  76     randomEncryption = {
  77       enable = true;
  78       cipher = "aes-xts-plain64";
  79       source = "/dev/urandom";
  80     };
  81   }
  82 ];
  83 zramSwap = {
  84   enable = true;
  85   algorithm = lib.mkDefault "zstd";
  86   # There is little point creating a zram of greater
  87   # than twice the size of memory
  88   # since we expect a 2:1 compression ratio.
  89   # Note that zram uses about 0.1% of the size of the disk
  90   # when not in use so a huge zram is wasteful.
  91   memoryPercent = lib.mkDefault 150;
  92   # Linux supports multithreaded compression for 1 device since 3.15.
  93   # See https://lkml.org/lkml/2014/2/28/404 for details.
  94   swapDevices = lib.mkDefault 1;
  95 };
  96 boot.kernel.sysctl = {
  97   # Increase cache pressure, which increases the tendency of the kernel to
  98   # reclaim memory used for caching of directory and inode objects. You will use
  99   # less memory over a longer period of time. The performance hit is negated by
 100   # the downside of swapping sooner.
 101   "vm.vfs_cache_pressure" = lib.mkDefault 500;
 102
 103   # Increasing how aggressively the kernel will swap memory pages since we are
 104   # using ZRAM first.
 105   "vm.swappiness" = lib.mkDefault 100;
 106
 107   # Background processes will start writing right away when it hits the 1% limit
 108   "vm.dirty_background_ratio" = lib.mkDefault 1;
 109
 110   # The system won’t force synchronous I/O until it gets to 50% dirty_ratio.
 111   "vm.dirty_ratio" = lib.mkDefault 50;
 112 };
 113
 114 # The 32-bit host id of the host, formatted as 8 hexadecimal characters.
 115 # You should try to make this id unique among your hosts.
 116 # Manually generated with : head -c4 /dev/urandom | od -A none -t x4 | cut -d ' ' -f 2
 117 networking.hostId = "ec2adb40";
 118
 119 # none is the recommended elevator with ZFS (which has its own I/O scheduler)
 120 # and/or for SSD, whereas HDD could use mq-deadline.
 121 services.udev.extraRules = ''
 122   # set none scheduler for non-rotating disks
 123   ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="none"
 124 '';
 125
 126 boot.supportedFilesystems = [ "ntfs" "vfat" "zfs" ];
 127 boot.initrd.supportedFilesystems = [ "zfs" ];
 128 boot.initrd.availableKernelModules = [
 129   "ahci"
 130   "drbg"
 131   "ehci_pci"
 132   "gf128mul"
 133   "hmac"
 134   "sd_mod"
 135 ];
 136
 137 boot.zfs.forceImportAll  = false;
 138 boot.zfs.forceImportRoot = false;
 139 boot.zfs.enableUnstable = false;
 140 boot.zfs.requestEncryptionCredentials = [ hostName ];
 141 services.zfs.autoScrub.enable = true;
 142
 143 fileSystems."/" =
 144   { device = "${hostName}/root";
 145     fsType = "zfs";
 146   };
 147 fileSystems."/nix" =
 148   { device = "${hostName}/nix";
 149     fsType = "zfs";
 150   };
 151 fileSystems."/home/sevy" =
 152   { device = "${hostName}/home";
 153     fsType = "zfs";
 154   };
 155 fileSystems."/home/sevy/Documents" =
 156   { device = "${hostName}/home/Documents";
 157     fsType = "zfs";
 158   };
 159 fileSystems."/home/sevy/Images" =
 160   { device = "${hostName}/home/Images";
 161     fsType = "zfs";
 162   };
 163 fileSystems."/home/sevy/Téléchargements" =
 164   { device = "${hostName}/home/Downloads";
 165     fsType = "zfs";
 166   };
 167 fileSystems."/home/sevy/.thunderbird" =
 168   { device = "${hostName}/home/Mails";
 169     fsType = "zfs";
 170   };
 171 fileSystems."/home/sevy/Vidéos" =
 172   { device = "${hostName}/home/Videos";
 173     fsType = "zfs";
 174   };
 175 fileSystems."/var" =
 176   { device = "${hostName}/var";
 177     fsType = "zfs";
 178   };
 179 fileSystems."/var/cache" =
 180   { device = "${hostName}/var/cache";
 181     fsType = "zfs";
 182   };
 183 fileSystems."/var/log" =
 184   { device = "${hostName}/var/log";
 185     fsType = "zfs";
 186   };
 187 fileSystems."/var/tmp" =
 188   { device = "${hostName}/var/tmp";
 189     fsType = "zfs";
 190   };
 191
 192 }