962e79ef32
- Add a new parameter `imageType` that can specify either "efi" or "legacy" (the default which should see no change in behaviour by this patch). - EFI images get a GPT partition table (instead of msdos) with a mandatory ESP partition (so we add an assert that `partitioned` is true). - Use the partx tool from util-linux to determine exact start + size of the root partition. This is required because GPT stores a secondary partition table at the end of the disk, so we can't just have mkfs.ext4 create the filesystem until the end of the disk. - (Unrelated to any EFI changes) Since we're depending on the `-E offset=X` option to mkfs which is only supported by e2fsprogs, disallow any attempts of creating partitioned disk images where the root filesystem is not ext4.
61 lines
1.6 KiB
Nix
61 lines
1.6 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.amazonImage;
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in {
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imports = [ ../../../modules/virtualisation/amazon-image.nix ];
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options.amazonImage = {
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name = mkOption {
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type = types.str;
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description = "The name of the generated derivation";
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default = "nixos-disk-image";
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};
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contents = mkOption {
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example = literalExample ''
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[ { source = pkgs.memtest86 + "/memtest.bin";
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target = "boot/memtest.bin";
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}
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]
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'';
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default = [];
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description = ''
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This option lists files to be copied to fixed locations in the
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generated image. Glob patterns work.
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'';
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};
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sizeMB = mkOption {
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type = types.int;
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default = if config.ec2.hvm then 2048 else 8192;
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description = "The size in MB of the image";
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};
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format = mkOption {
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type = types.enum [ "raw" "qcow2" "vpc" ];
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default = "qcow2";
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description = "The image format to output";
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};
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};
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config.system.build.amazonImage = import ../../../lib/make-disk-image.nix {
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inherit lib config;
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inherit (cfg) contents format name;
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pkgs = import ../../../.. { inherit (pkgs) system; }; # ensure we use the regular qemu-kvm package
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partitionTableType = if config.ec2.hvm then "legacy" else "none";
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diskSize = cfg.sizeMB;
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configFile = pkgs.writeText "configuration.nix"
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''
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{
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imports = [ <nixpkgs/nixos/modules/virtualisation/amazon-image.nix> ];
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${optionalString config.ec2.hvm ''
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ec2.hvm = true;
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''}
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}
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'';
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};
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}
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