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   # FIXME: uncomment when updating to 21.05
   8   levels = ''
   9     (0,     0,      57)
  10     (1,     56,     62)
  11     (2,     61,     65)
  12     (3,     64,     66)
  13     (4,     65,     68)
  14     (5,     67,     71)
  15     (6,     70,     76)
  16     (7,     75,     81)
  17     (127,   80,     32767)
  18   '';
  19   /*
  20   levels = [
  21     [0     0      57]
  22     [1     56     62]
  23     [2     61     65]
  24     [3     64     66]
  25     [4     65     68]
  26     [5     67     71]
  27     [6     70     76]
  28     [7     75     81]
  29     [127   80     32767]
  30   ];
  31   */
  32 };
  33
  34 # https://bugzilla.kernel.org/show_bug.cgi?id=110941
  35 boot.kernelParams = [ "intel_pstate=no_hwp" ];
  36 boot.kernelModules = [ "kvm-intel" ];
  37 boot.cleanTmpDir = true;
  38 boot.tmpOnTmpfs = true;
  39 boot.extraModulePackages = [
  40   config.boot.kernelPackages.exfat-nofuse
  41 ];
  42 boot.loader.grub = {
  43   enable  = true;
  44   version = 2;
  45   device  = "/dev/disk/by-id/ata-CT250MX500SSD1_2004E2849DD1";
  46   configurationLimit = 3;
  47   #zfsSupport = true;
  48   /*
  49   efiSupport = true;
  50   efi = {
  51     canTouchEfiVariables = false;
  52     efiSysMountPoint = "/boot/efi";
  53   };
  54   */
  55   #enableCryptodisk = true;
  56 };
  57 services.acpid = {
  58   enable = true;
  59   handlers = {
  60     brightnessDown = {
  61       event = "video/brightnessdown.*";
  62       action = "${pkgs.acpilight}/bin/xbacklight -dec 10";
  63     };
  64     brightnessUp = {
  65       event = "video/brightnessup.*";
  66       action = "${pkgs.acpilight}/bin/xbacklight -inc 10";
  67     };
  68     acAdapter = {
  69       event = "ac_adapter/*";
  70       action = ''
  71         vals=($1)
  72         case ''${vals[3]} in
  73           00000000) # unplugged
  74             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g powersave;;
  75           00000001) # plugged in
  76             ${pkgs.linuxPackages.cpupower}/bin/cpupower frequency-set -g ondemand;;
  77         esac
  78       '';
  79     };
  80   };
  81 };
  82
  83 fileSystems."/boot" =
  84   { device = "/dev/disk/by-partlabel/${hostName}_ssd_boot";
  85     fsType = "ext2";
  86   };
  87 fileSystems."/boot/efi" =
  88   { device = "/dev/disk/by-partlabel/${hostName}_ssd_efi";
  89     fsType = "vfat";
  90   };
  91 swapDevices = [
  92   { device = "/dev/disk/by-partlabel/${hostName}_ssd_swap";
  93     randomEncryption = {
  94       enable = true;
  95       cipher = "aes-xts-plain64";
  96       source = "/dev/urandom";
  97     };
  98   }
  99 ];
 100 zramSwap = {
 101   enable = true;
 102   algorithm = lib.mkDefault "zstd";
 103   # There is little point creating a zram of greater
 104   # than twice the size of memory
 105   # since we expect a 2:1 compression ratio.
 106   # Note that zram uses about 0.1% of the size of the disk
 107   # when not in use so a huge zram is wasteful.
 108   memoryPercent = lib.mkDefault 150;
 109   # Linux supports multithreaded compression for 1 device since 3.15.
 110   # See https://lkml.org/lkml/2014/2/28/404 for details.
 111   swapDevices = lib.mkDefault 1;
 112 };
 113 boot.kernel.sysctl = {
 114   # Increase cache pressure, which increases the tendency of the kernel to
 115   # reclaim memory used for caching of directory and inode objects. You will use
 116   # less memory over a longer period of time. The performance hit is negated by
 117   # the downside of swapping sooner.
 118   "vm.vfs_cache_pressure" = lib.mkDefault 500;
 119
 120   # Increasing how aggressively the kernel will swap memory pages since we are
 121   # using ZRAM first.
 122   "vm.swappiness" = lib.mkDefault 100;
 123
 124   # Background processes will start writing right away when it hits the 1% limit
 125   "vm.dirty_background_ratio" = lib.mkDefault 1;
 126
 127   # The system won’t force synchronous I/O until it gets to 50% dirty_ratio.
 128   "vm.dirty_ratio" = lib.mkDefault 50;
 129 };
 130
 131 # The 32-bit host id of the host, formatted as 8 hexadecimal characters.
 132 # You should try to make this id unique among your hosts.
 133 # Manually generated with : head -c4 /dev/urandom | od -A none -t x4 | cut -d ' ' -f 2
 134 networking.hostId = "ec2adb40";
 135
 136 # none is the recommended elevator with ZFS (which has its own I/O scheduler)
 137 # and/or for SSD, whereas HDD could use mq-deadline.
 138 services.udev.extraRules = ''
 139   # set none scheduler for non-rotating disks
 140   ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="none"
 141 '';
 142
 143 boot.supportedFilesystems = [ "ntfs" "vfat" "zfs" ];
 144 boot.initrd.supportedFilesystems = [ "zfs" ];
 145 boot.initrd.availableKernelModules = [
 146   "ahci"
 147   "drbg"
 148   "ehci_pci"
 149   "gf128mul"
 150   "hmac"
 151   "sd_mod"
 152 ];
 153
 154 boot.zfs.forceImportAll  = false;
 155 boot.zfs.forceImportRoot = false;
 156 boot.zfs.enableUnstable = false;
 157 boot.zfs.requestEncryptionCredentials = [ hostName ];
 158 services.zfs.autoScrub.enable = true;
 159
 160 fileSystems."/" =
 161   { device = "${hostName}/root";
 162     fsType = "zfs";
 163   };
 164 fileSystems."/nix" =
 165   { device = "${hostName}/nix";
 166     fsType = "zfs";
 167   };
 168 fileSystems."/home/sevy" =
 169   { device = "${hostName}/home";
 170     fsType = "zfs";
 171   };
 172 fileSystems."/home/sevy/Documents" =
 173   { device = "${hostName}/home/Documents";
 174     fsType = "zfs";
 175   };
 176 fileSystems."/home/sevy/Images" =
 177   { device = "${hostName}/home/Images";
 178     fsType = "zfs";
 179   };
 180 fileSystems."/home/sevy/Téléchargements" =
 181   { device = "${hostName}/home/Downloads";
 182     fsType = "zfs";
 183   };
 184 fileSystems."/home/sevy/.thunderbird" =
 185   { device = "${hostName}/home/Mails";
 186     fsType = "zfs";
 187   };
 188 fileSystems."/home/sevy/Vidéos" =
 189   { device = "${hostName}/home/Videos";
 190     fsType = "zfs";
 191   };
 192 fileSystems."/var" =
 193   { device = "${hostName}/var";
 194     fsType = "zfs";
 195   };
 196 fileSystems."/var/cache" =
 197   { device = "${hostName}/var/cache";
 198     fsType = "zfs";
 199   };
 200 fileSystems."/var/log" =
 201   { device = "${hostName}/var/log";
 202     fsType = "zfs";
 203   };
 204 fileSystems."/var/tmp" =
 205   { device = "${hostName}/var/tmp";
 206     fsType = "zfs";
 207   };
 208
 209 }