dotfiles/nixos/systems/blowhole/nas.nix

{ pkgs, ... }:
{
  fileSystems."/mnt/cartman" = {
    device = "storfa/ds1/cartman";
    fsType = "zfs";
  };

  systemd.services.mnt-kyle-zfs-relmount = {
    requires = ["mnt-kyle.mount"];
    after = ["mnt-kyle.mount"];
    requiredBy = ["local-fs.target"];

    path = with pkgs; [zfs util-linux];

    serviceConfig = {
      RemainAfterExit = true;
      Type = "oneshot";
      ExecStart = "${pkgs.zfs-relmount}/bin/zfs-relmount mount storfa/ds1/kyle /mnt/kyle";
    };
  };

  fileSystems."/mnt/kyle" = {
    device = "storfa/ds1/kyle";
    fsType = "zfs";
  };

  systemd.services.mnt-cartman-zfs-relmount = {
    requires = ["mnt-cartman.mount"];
    after = ["mnt-cartman.mount"];
    requiredBy = ["local-fs.target"];

    path = with pkgs; [zfs util-linux];

    serviceConfig = {
      RemainAfterExit = true;
      Type = "oneshot";
      ExecStart = "${pkgs.zfs-relmount}/bin/zfs-relmount mount storfa/ds1/cartman /mnt/cartman";
    };
  };

  fileSystems."/mnt/stan" = {
    device = "storfa/ds1/stan";
    fsType = "zfs";
  };

  systemd.services.mnt-stan-zfs-relmount = {
    requires = ["mnt-stan.mount"];
    after = ["mnt-stan.mount"];
    requiredBy = ["local-fs.target"];

    path = with pkgs; [zfs util-linux];

    serviceConfig = {
      RemainAfterExit = true;
      Type = "oneshot";
      ExecStart = "${pkgs.zfs-relmount}/bin/zfs-relmount mount storfa/ds1/stan /mnt/stan";
    };
  };

  fileSystems."/run/restic" = {
    fsType = "tmpfs";
    options = [ "size=64M" ];
  };

  services.restic.backups.cartman = {
    initialize = true;
    timerConfig = {
      OnCalendar = "03:00";
    };

    paths = [ "/run/restic/cartman" ];
    backupPrepareCommand = ''
      snapshot="$(date +restic%+4Y_%U_%u)"
      ${pkgs.zfs-relmount}/bin/zfs-relmount snapshot storfa/ds1/cartman "''${snapshot}"

      mkdir /run/restic/cartman
      ${pkgs.zfs-relmount}/bin/zfs-relmount mount-snapshot storfa/ds1/cartman /run/restic/cartman "''${snapshot}"

      export RESTIC_PROGRESS_FPS=1
    '';
    backupCleanupCommand = ''
      ${pkgs.zfs-relmount}/bin/zfs-relmount umount storfa/ds1/cartman /run/restic/cartman
      rm -r /run/restic/cartman
    '';

    passwordFile = "";
    repository = "";
  };

  systemd.timers."restic-backups-cartman" = {
    timerConfig = {
      Persistent = true;
      WakeSystem = true;
    };
  };

  systemd.services."restic-backups-cartman" = {
    path = with pkgs; [
      util-linux
      zfs
    ];
    serviceConfig = {
      Nice = 19;
      IOSchedulingClass = "idle";
      EnvironmentFile = "/var/secrets/restic-b2";
    };
  };
}