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   # FIXME: uncomment when updating to 21.05
  15   levels = ''
  16     (0,     0,      57)
  17     (1,     56,     62)
  18     (2,     61,     65)
  19     (3,     64,     66)
  20     (4,     65,     68)
  21     (5,     67,     71)
  22     (6,     70,     76)
  23     (7,     75,     81)
  24     (127,   80,     32767)
  25   '';
  26   /*
  27   levels = [
  28     [0     0      57]
  29     [1     56     62]
  30     [2     61     65]
  31     [3     64     66]
  32     [4     65     68]
  33     [5     67     71]
  34     [6     70     76]
  35     [7     75     81]
  36     [127   80     32767]
  37   ];
  38   */
  39 };
  40 hardware.acpilight.enable = true;
  41 services.acpid = {
  42   enable = true;
  43   handlers = {
  44     brightnessDown = {
  45       event = "video/brightnessdown.*";
  46       action = "${pkgs.acpilight}/bin/xbacklight -dec 5";
  47     };
  48     brightnessUp = {
  49       event = "video/brightnessup.*";
  50       action = "${pkgs.acpilight}/bin/xbacklight -inc 5";
  51     };
  52     acAdapter = {
  53       event = "ac_adapter/*";
  54       action = ''
  55         vals=($1)
  56         case ''${vals[3]} in
  57           00000000) # unplugged
  58             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g powersave;;
  59           00000001) # plugged in
  60             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g ondemand;;
  61         esac
  62       '';
  63     };
  64   };
  65 };
  66
  67 # https://bugzilla.kernel.org/show_bug.cgi?id=110941
  68 boot.kernelParams = [ "intel_pstate=no_hwp" ];
  69 boot.kernelModules = [ "kvm-intel" ];
  70 boot.cleanTmpDir = true;
  71 boot.tmpOnTmpfs = true;
  72 boot.extraModulePackages = [
  73   config.boot.kernelPackages.exfat-nofuse
  74 ];
  75 boot.loader.grub = {
  76   enable  = true;
  77   version = 2;
  78   device  = "/dev/disk/by-id/ata-Samsung_SSD_850_PRO_128GB_S1SMNSAFC36436X";
  79   configurationLimit = 3;
  80   #zfsSupport = true;
  81   /*
  82   efiSupport = true;
  83   efi = {
  84     canTouchEfiVariables = false;
  85     efiSysMountPoint = "/boot/efi";
  86   };
  87   */
  88   #enableCryptodisk = true;
  89 };
  90
  91 fileSystems."/boot" =
  92   { device = "/dev/disk/by-partlabel/${hostName}_ssd_boot";
  93     fsType = "ext2";
  94   };
  95 fileSystems."/boot/efi" =
  96   { device = "/dev/disk/by-partlabel/${hostName}_ssd_efi";
  97     fsType = "vfat";
  98   };
  99 swapDevices = [
 100   { device = "/dev/disk/by-partlabel/${hostName}_ssd_swap";
 101     randomEncryption = {
 102       enable = true;
 103       cipher = "aes-xts-plain64";
 104       source = "/dev/urandom";
 105     };
 106   }
 107 ];
 108 zramSwap = {
 109   enable = true;
 110   algorithm = lib.mkDefault "zstd";
 111   # There is little point creating a zram of greater
 112   # than twice the size of memory
 113   # since we expect a 2:1 compression ratio.
 114   # Note that zram uses about 0.1% of the size of the disk
 115   # when not in use so a huge zram is wasteful.
 116   memoryPercent = lib.mkDefault 150;
 117   # Linux supports multithreaded compression for 1 device since 3.15.
 118   # See https://lkml.org/lkml/2014/2/28/404 for details.
 119   swapDevices = lib.mkDefault 1;
 120 };
 121 boot.kernel.sysctl = {
 122   # Increase cache pressure, which increases the tendency of the kernel to
 123   # reclaim memory used for caching of directory and inode objects. You will use
 124   # less memory over a longer period of time. The performance hit is negated by
 125   # the downside of swapping sooner.
 126   "vm.vfs_cache_pressure" = lib.mkDefault 500;
 127
 128   # Increasing how aggressively the kernel will swap memory pages since we are
 129   # using ZRAM first.
 130   "vm.swappiness" = lib.mkDefault 100;
 131
 132   # Background processes will start writing right away when it hits the 1% limit
 133   "vm.dirty_background_ratio" = lib.mkDefault 1;
 134
 135   # The system won’t force synchronous I/O until it gets to 50% dirty_ratio.
 136   "vm.dirty_ratio" = lib.mkDefault 50;
 137 };
 138
 139 # The 32-bit host id of the host, formatted as 8 hexadecimal characters.
 140 # You should try to make this id unique among your hosts.
 141 # Manually generated with : head -c4 /dev/urandom | od -A none -t x4 | cut -d ' ' -f 2
 142 networking.hostId = "ce53d0c3";
 143
 144 # none is the recommended elevator with ZFS (which has its own I/O scheduler)
 145 # and/or for SSD, whereas HDD could use mq-deadline.
 146 services.udev.extraRules = ''
 147   # set none scheduler for non-rotating disks
 148   ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="none"
 149 '';
 150
 151 boot.supportedFilesystems = [ "ntfs" "vfat" "zfs" ];
 152 boot.initrd.supportedFilesystems = [ "zfs" ];
 153 boot.initrd.availableKernelModules = [
 154   "ahci"
 155   "drbg"
 156   "ehci_pci"
 157   "gf128mul"
 158   "hmac"
 159   "sd_mod"
 160 ];
 161
 162 boot.zfs.forceImportAll  = false;
 163 boot.zfs.forceImportRoot = false;
 164 boot.zfs.enableUnstable = false;
 165 boot.zfs.requestEncryptionCredentials = [ hostName ];
 166 services.zfs.autoScrub.enable = true;
 167
 168 fileSystems."/" =
 169   { device = "${hostName}/root";
 170     fsType = "zfs";
 171   };
 172 fileSystems."/nix" =
 173   { device = "${hostName}/nix";
 174     fsType = "zfs";
 175   };
 176 fileSystems."/var" =
 177   { device = "${hostName}/var";
 178     fsType = "zfs";
 179   };
 180
 181 }