hosts/patate/hardware.nix

   1 { config, lib, pkgs, hostName, ... }:
   2 {
   3 hardware.cpu.intel.updateMicrocode = true;
   4 powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
   5 services.thinkfan = {
   6   enable = true;
   7   levels = ''
   8     (0,     0,      57)
   9     (1,     56,     62)
  10     (2,     61,     65)
  11     (3,     64,     66)
  12     (4,     65,     68)
  13     (5,     67,     71)
  14     (6,     70,     76)
  15     (7,     75,     81)
  16     (127,   80,     32767)
  17   '';
  18 };
  19
  20 # https://bugzilla.kernel.org/show_bug.cgi?id=110941
  21 boot.kernelParams = [ "intel_pstate=no_hwp" ];
  22 boot.kernelModules = [ "kvm-intel" ];
  23 boot.cleanTmpDir = true;
  24 boot.tmpOnTmpfs = true;
  25 boot.extraModulePackages = [
  26   config.boot.kernelPackages.exfat-nofuse
  27 ];
  28 boot.loader.grub = {
  29   enable  = true;
  30   version = 2;
  31   device  = "/dev/disk/by-id/ata-CT250MX500SSD1_2004E2849DD1";
  32   configurationLimit = 3;
  33   #zfsSupport = true;
  34   /*
  35   efiSupport = true;
  36   efi = {
  37     canTouchEfiVariables = false;
  38     efiSysMountPoint = "/boot/efi";
  39   };
  40   */
  41   #enableCryptodisk = true;
  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     acAdapter = {
  55       event = "ac_adapter/*";
  56       action = ''
  57         vals=($1)
  58         case ''${vals[3]} in
  59           00000000) # unplugged
  60             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g powersave;;
  61           00000001) # plugged in
  62             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g ondemand;;
  63         esac
  64       '';
  65     };
  66   };
  67 };
  68
  69 fileSystems."/boot" =
  70   { device = "/dev/disk/by-partlabel/${hostName}_ssd_boot";
  71     fsType = "ext2";
  72   };
  73 fileSystems."/boot/efi" =
  74   { device = "/dev/disk/by-partlabel/${hostName}_ssd_efi";
  75     fsType = "vfat";
  76   };
  77 swapDevices = [
  78   { device = "/dev/disk/by-partlabel/${hostName}_ssd_swap";
  79     randomEncryption = {
  80       enable = true;
  81       cipher = "aes-xts-plain64";
  82       source = "/dev/urandom";
  83     };
  84   }
  85 ];
  86 zramSwap = {
  87   enable = true;
  88   algorithm = lib.mkDefault "zstd";
  89   # There is little point creating a zram of greater
  90   # than twice the size of memory
  91   # since we expect a 2:1 compression ratio.
  92   # Note that zram uses about 0.1% of the size of the disk
  93   # when not in use so a huge zram is wasteful.
  94   memoryPercent = lib.mkDefault 150;
  95   # Linux supports multithreaded compression for 1 device since 3.15.
  96   # See https://lkml.org/lkml/2014/2/28/404 for details.
  97   swapDevices = lib.mkDefault 1;
  98 };
  99 boot.kernel.sysctl = {
 100   # Increase cache pressure, which increases the tendency of the kernel to
 101   # reclaim memory used for caching of directory and inode objects. You will use
 102   # less memory over a longer period of time. The performance hit is negated by
 103   # the downside of swapping sooner.
 104   "vm.vfs_cache_pressure" = lib.mkDefault 500;
 105
 106   # Increasing how aggressively the kernel will swap memory pages since we are
 107   # using ZRAM first.
 108   "vm.swappiness" = lib.mkDefault 100;
 109
 110   # Background processes will start writing right away when it hits the 1% limit
 111   "vm.dirty_background_ratio" = lib.mkDefault 1;
 112
 113   # The system won’t force synchronous I/O until it gets to 50% dirty_ratio.
 114   "vm.dirty_ratio" = lib.mkDefault 50;
 115 };
 116
 117 # The 32-bit host id of the host, formatted as 8 hexadecimal characters.
 118 # You should try to make this id unique among your hosts.
 119 # Manually generated with : head -c4 /dev/urandom | od -A none -t x4 | cut -d ' ' -f 2
 120 networking.hostId = "ec2adb40";
 121
 122 # none is the recommended elevator with ZFS (which has its own I/O scheduler)
 123 # and/or for SSD, whereas HDD could use mq-deadline.
 124 services.udev.extraRules = ''
 125   # set none scheduler for non-rotating disks
 126   ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="none"
 127 '';
 128
 129 boot.supportedFilesystems = [ "zfs" ];
 130 boot.initrd.supportedFilesystems = [ "zfs" ];
 131 boot.initrd.availableKernelModules = [
 132   "ahci"
 133   "drbg"
 134   "ehci_pci"
 135   "gf128mul"
 136   "hmac"
 137   "sd_mod"
 138 ];
 139
 140 boot.zfs.forceImportAll  = false;
 141 boot.zfs.forceImportRoot = false;
 142 boot.zfs.enableUnstable = false;
 143 boot.zfs.requestEncryptionCredentials = [ hostName ];
 144 services.zfs.autoScrub.enable = true;
 145
 146 fileSystems."/" =
 147   { device = "${hostName}/root";
 148     fsType = "zfs";
 149   };
 150 fileSystems."/nix" =
 151   { device = "${hostName}/nix";
 152     fsType = "zfs";
 153   };
 154 fileSystems."/home" =
 155   { device = "${hostName}/home";
 156     fsType = "zfs";
 157   };
 158 fileSystems."/home/sevy/Documents" =
 159   { device = "${hostName}/home/documents";
 160     fsType = "zfs";
 161   };
 162 fileSystems."/var" =
 163   { device = "${hostName}/var";
 164     fsType = "zfs";
 165   };
 166 fileSystems."/var/cache" =
 167   { device = "${hostName}/var/cache";
 168     fsType = "zfs";
 169   };
 170 fileSystems."/var/log" =
 171   { device = "${hostName}/var/log";
 172     fsType = "zfs";
 173   };
 174 fileSystems."/var/tmp" =
 175   { device = "${hostName}/var/tmp";
 176     fsType = "zfs";
 177   };
 178
 179 }