Commit c43bc416 authored by phaer's avatar phaer
Browse files

image/repart: add image.repart.imageSize for --size 

This allows users to specify their desired total size of the generated
disk image. This is useful to e.g. match the size of a target medium to
have a appropriately sized filesystems even before first boot.

It's a noop for the default value of "auto".
parent 0ec0d58f

nixos/modules/image/repart-image.nix

+2 −1
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
  split,

  seed,

  definitionsDirectory,

  imageSize ? "auto",

  sectorSize,

  mkfsEnv ? { },

  createEmpty ? true,
@@ -170,7 +171,7 @@ stdenvNoCC.mkDerivation ( 
    systemdRepartFlags = [

      "--architecture=${systemdArch}"

      "--dry-run=no"

      "--size=auto"

      "--size=${imageSize}"

      "--definitions=${finalAttrs.finalRepartDefinitions}"

      "--split=${lib.boolToString split}"

      "--json=pretty"

nixos/modules/image/repart.nix

+9 −0
Original line number Diff line number Diff line
@@ -201,6 +201,14 @@ in 
      '';

    };



    imageSize = lib.mkOption {

      type = lib.types.strMatching "^([0-9]+[KMGTP]?|auto)$";

      default = "auto";

      example = "512G";

      description = "Size of the produced image in bytes with optional K, M, G, T suffix,

        or 'auto' to determine the minimal size automatically";

    };



    package = lib.mkPackageOption pkgs "systemd-repart" {

      # We use buildPackages so that repart images are built with the build

      # platform's systemd, allowing for cross-compiled systems to work.
@@ -415,6 +423,7 @@ in 
            compression

            split

            seed

            imageSize

            sectorSize

            finalPartitions

            ;