pkgs/tools/system/smartmontools/smartctl-tbw/default.nix

   1 { coreutils
   2 , gawk
   3 , gnused
   4 , smartmontools
   5 , stdenv
   6 , sudo
   7 , writeShellScriptBin
   8 , utillinux
   9 }:
  10 let
  11   PATH = stdenv.lib.concatStringsSep ":"
  12            [ "${coreutils}/bin"
  13              "${gawk}/bin"
  14              "${gnused}/bin"
  15              "${sudo}/bin"
  16              "${utillinux}/bin"
  17            ];
  18 in
  19 stdenv.mkDerivation rec {
  20   pname = "smartctl-tbw";
  21   version = "1.0";
  22   name = "${pname}-${version}";
  23
  24   src = writeShellScriptBin "smartctl-tbw" ''
  25     export PATH=${PATH}
  26     device=''${1:-/dev/sda}
  27     sudo ${smartmontools}/bin/smartctl -A $device |
  28     awk '
  29       $0 ~ /Power_On_Hours/ { poh=$10; printf "%s / %d hours / %d days / %.2f years\n",  $2, $10, $10 / 24, $10 / 24 / 365.25 }
  30       $0 ~ /Total_LBAs_Written/ {
  31           lbas=$10;
  32           bytes=$10 * 512;
  33           mb= bytes / 1024^2;
  34           gb= bytes / 1024^3;
  35           tb= bytes / 1024^4;
  36           printf "%s / %s  / %d mb / %.1f gb / %.3f tb\n", $2, $10, mb, gb, tb
  37           printf "mean writes per hour:  / %.2f",  mb/poh
  38       }
  39       $0 ~ /Airflow_Temperature_Cel/ { print $2 " / " $10}
  40       $0 ~ /Wear_Leveling_Count/ { printf "%s / %d (%% health)\n", $2, int($4) }
  41     ' |
  42     sed -e 's:/:@:' |
  43     sed -e "s\$^\$$device @ \$" |
  44     column -ts@
  45   '';
  46
  47   buildInputs = [
  48     gawk
  49     coreutils
  50     gnused
  51     smartmontools
  52     sudo
  53     utillinux
  54   ];
  55   installPhase = ''
  56     cp -r . $out
  57   '';
  58
  59   meta = {
  60     description = "Wrapper around smartctl to print the Total-Bytes-Written of disks";
  61     license = stdenv.lib.licenses.gpl3Plus;
  62     platforms = stdenv.lib.platforms.all;
  63   };
  64 }