{
  boot.loader.grub = {
    enable = true;
    device = "/dev/vda";
    enableCryptodisk = true;
  };
  # boot.initrd.luks.devices."DISK".device = "/dev/vda2";
  services.btrfs.autoScrub.enable = true;
  services.btrfs.autoScrub.interval = "weekly";

  disko.devices.disk.vda = {
    device = "/dev/vda";
    type = "disk";
    content = {
      type = "gpt";
      partitions = {
        boot = {
          size = "1M";
          type = "EF02";
        }; # partitions.boot
        luks = {
          size = "100%";
          content = {
            type = "luks";
            name = "crypted";
            extraOpenArgs = [ "--allow-discards" ];
            content = {
              type = "btrfs";
              extraArgs = [ "-f" ];
              subvolumes = {
                "/root" = {
                  mountpoint = "/";
                  mountOptions = [ "compress=zstd" "noatime" ];
                }; # root
                "/home" = {
                  mountpoint = "/home";
                  mountOptions = [ "compress=zstd" "noatime" ];
                }; # home
                "/nix" = {
                  mountpoint = "/nix";
                  mountOptions = [ "compress=zstd" "noatime" ];
                }; # nix
              }; # subvolumes
            };# content
          }; # content
        }; # luks.partitions
      }; # partitions
    }; # content
  }; # disko.devices.disk.vda
} # root