nixcfg/systems/x86_64-linux/mx/server-raid.nix

{
  disks ? [
    "/dev/sda"
    "/dev/sdb"
  ],
  ...
}:
{
  disk = {
    one = {
      type = "disk";
      device = builtins.elemAt disks 0;
      content = {
        type = "gpt";
        partitions = {
          boot = {
            size = "1M";
            type = "EF02";
          };
          ESP = {
            size = "256M";
            type = "EF00";
            content = {
              type = "filesystem";
              format = "vfat";
              mountpoint = "/boot";
            };
          };
          mdadm = {
            size = "100%";
            content = {
              type = "mdraid";
              name = "raid1";
            };
          };
        };
      };
    };
    two = {
      type = "disk";
      device = builtins.elemAt disks 1;
      content = {
        type = "gpt";
        partitions = {
          boot = {
            size = "1M";
            type = "EF02";
          };
          ESP = {
            size = "256M";
            type = "EF00";
          };
          mdadm = {
            size = "100%";
            content = {
              type = "mdraid";
              name = "raid1";
            };
          };
        };
      };
    };
  };
  mdadm = {
    raid1 = {
      type = "mdadm";
      level = 1;
      content = {
        type = "luks";
        name = "crypted";
        extraOpenArgs = [ "--allow-discards" ];
        settings = {
          allowDiscards = true;
        };
        initrdUnlock = false;
        content = {
          type = "filesystem";
          format = "btrfs";
          mountpoint = "/";
        };
      };
    };
  };
}