hosts/oignon/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   smartSupport = true;
   8   # FIXME: uncomment when updating to 21.05
   9   levels = ''
  10     (0,     0,      57)
  11     (1,     56,     62)
  12     (2,     61,     65)
  13     (3,     64,     66)
  14     (4,     65,     68)
  15     (5,     67,     71)
  16     (6,     70,     76)
  17     (7,     75,     81)
  18     (127,   80,     32767)
  19   '';
  20   /*
  21   levels = [
  22     [0     0      57]
  23     [1     56     62]
  24     [2     61     65]
  25     [3     64     66]
  26     [4     65     68]
  27     [5     67     71]
  28     [6     70     76]
  29     [7     75     81]
  30     [127   80     32767]
  31   ];
  32   */
  33 };
  34 hardware.acpilight.enable = true;
  35 services.acpid = {
  36   enable = true;
  37   handlers = {
  38     brightnessDown = {
  39       event = "video/brightnessdown.*";
  40       action = "${pkgs.acpilight}/bin/xbacklight -dec 5";
  41     };
  42     brightnessUp = {
  43       event = "video/brightnessup.*";
  44       action = "${pkgs.acpilight}/bin/xbacklight -inc 5";
  45     };
  46     acAdapter = {
  47       event = "ac_adapter/*";
  48       action = ''
  49         vals=($1)
  50         case ''${vals[3]} in
  51           00000000) # unplugged
  52             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g powersave;;
  53           00000001) # plugged in
  54             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g ondemand;;
  55         esac
  56       '';
  57     };
  58   };
  59 };
  60
  61 # https://bugzilla.kernel.org/show_bug.cgi?id=110941
  62 boot.kernelParams = [ "intel_pstate=no_hwp" ];
  63 boot.kernelModules = [ "kvm-intel" ];
  64 boot.cleanTmpDir = true;
  65 boot.tmpOnTmpfs = true;
  66 boot.extraModulePackages = [
  67   config.boot.kernelPackages.exfat-nofuse
  68 ];
  69 boot.loader.grub = {
  70   enable  = true;
  71   version = 2;
  72   device  = "/dev/disk/by-id/ata-Samsung_SSD_850_PRO_128GB_S1SMNSAFC36436X";
  73   configurationLimit = 3;
  74   #zfsSupport = true;
  75   /*
  76   efiSupport = true;
  77   efi = {
  78     canTouchEfiVariables = false;
  79     efiSysMountPoint = "/boot/efi";
  80   };
  81   */
  82   #enableCryptodisk = true;
  83 };
  84
  85 fileSystems."/boot" =
  86   { device = "/dev/disk/by-partlabel/${hostName}_ssd_boot";
  87     fsType = "ext2";
  88   };
  89 fileSystems."/boot/efi" =
  90   { device = "/dev/disk/by-partlabel/${hostName}_ssd_efi";
  91     fsType = "vfat";
  92   };
  93 swapDevices = [
  94   { device = "/dev/disk/by-partlabel/${hostName}_ssd_swap";
  95     randomEncryption = {
  96       enable = true;
  97       cipher = "aes-xts-plain64";
  98       source = "/dev/urandom";
  99     };
 100   }
 101 ];
 102 zramSwap = {
 103   enable = true;
 104   algorithm = lib.mkDefault "zstd";
 105   # There is little point creating a zram of greater
 106   # than twice the size of memory
 107   # since we expect a 2:1 compression ratio.
 108   # Note that zram uses about 0.1% of the size of the disk
 109   # when not in use so a huge zram is wasteful.
 110   memoryPercent = lib.mkDefault 150;
 111   # Linux supports multithreaded compression for 1 device since 3.15.
 112   # See https://lkml.org/lkml/2014/2/28/404 for details.
 113   swapDevices = lib.mkDefault 1;
 114 };
 115 boot.kernel.sysctl = {
 116   # Increase cache pressure, which increases the tendency of the kernel to
 117   # reclaim memory used for caching of directory and inode objects. You will use
 118   # less memory over a longer period of time. The performance hit is negated by
 119   # the downside of swapping sooner.
 120   "vm.vfs_cache_pressure" = lib.mkDefault 500;
 121
 122   # Increasing how aggressively the kernel will swap memory pages since we are
 123   # using ZRAM first.
 124   "vm.swappiness" = lib.mkDefault 100;
 125
 126   # Background processes will start writing right away when it hits the 1% limit
 127   "vm.dirty_background_ratio" = lib.mkDefault 1;
 128
 129   # The system won’t force synchronous I/O until it gets to 50% dirty_ratio.
 130   "vm.dirty_ratio" = lib.mkDefault 50;
 131 };
 132
 133 # The 32-bit host id of the host, formatted as 8 hexadecimal characters.
 134 # You should try to make this id unique among your hosts.
 135 # Manually generated with : head -c4 /dev/urandom | od -A none -t x4 | cut -d ' ' -f 2
 136 networking.hostId = "ce53d0c3";
 137
 138 # none is the recommended elevator with ZFS (which has its own I/O scheduler)
 139 # and/or for SSD, whereas HDD could use mq-deadline.
 140 services.udev.extraRules = ''
 141   # set none scheduler for non-rotating disks
 142   ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="none"
 143 '';
 144
 145 boot.supportedFilesystems = [ "ntfs" "vfat" "zfs" ];
 146 boot.initrd.supportedFilesystems = [ "zfs" ];
 147 boot.initrd.availableKernelModules = [
 148   "ahci"
 149   "drbg"
 150   "ehci_pci"
 151   "gf128mul"
 152   "hmac"
 153   "sd_mod"
 154 ];
 155
 156 boot.zfs.forceImportAll  = false;
 157 boot.zfs.forceImportRoot = false;
 158 boot.zfs.enableUnstable = false;
 159 boot.zfs.requestEncryptionCredentials = [ hostName ];
 160 services.zfs.autoScrub.enable = true;
 161
 162 fileSystems."/" =
 163   { device = "${hostName}/root";
 164     fsType = "zfs";
 165   };
 166 fileSystems."/nix" =
 167   { device = "${hostName}/nix";
 168     fsType = "zfs";
 169   };
 170 fileSystems."/var" =
 171   { device = "${hostName}/var";
 172     fsType = "zfs";
 173   };
 174
 175 }