6a8359a92a
As a temporary workaround for #120473 while the image builder is patched
to correctly look up disk sizes, partially revert
f3aa040bcb for EC2 disk images only.
We retain the type allowing "auto" but set the default back to the
previous value.
96 lines
3.1 KiB
Nix
96 lines
3.1 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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# Amazon recomments setting this to the highest possible value for a good EBS
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# experience, which prior to 4.15 was 255.
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# https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/nvme-ebs-volumes.html#timeout-nvme-ebs-volumes
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config.boot.kernelParams =
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let timeout =
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if pkgs.lib.versionAtLeast config.boot.kernelPackages.kernel.version "4.15"
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then "4294967295"
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else "255";
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in [ "nvme_core.io_timeout=${timeout}" ];
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options.amazonImage = {
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name = mkOption {
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type = types.str;
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description = "The name of the generated derivation";
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default = "nixos-amazon-image-${config.system.nixos.label}-${pkgs.stdenv.hostPlatform.system}";
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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 = with types; either (enum [ "auto" ]) int;
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# TODO(lukegb): this should be "auto"; see #120473
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default = if config.ec2.hvm then 2048 else 8192;
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example = 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 = "vpc";
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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.efi then "efi"
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else if config.ec2.hvm then "legacy+gpt"
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else "none";
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diskSize = cfg.sizeMB;
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fsType = "ext4";
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configFile = pkgs.writeText "configuration.nix"
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''
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{ modulesPath, ... }: {
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imports = [ "''${modulesPath}/virtualisation/amazon-image.nix" ];
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${optionalString config.ec2.hvm ''
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ec2.hvm = true;
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''}
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${optionalString config.ec2.efi ''
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ec2.efi = true;
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''}
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}
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'';
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postVM = ''
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extension=''${diskImage##*.}
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friendlyName=$out/${cfg.name}.$extension
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mv "$diskImage" "$friendlyName"
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diskImage=$friendlyName
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mkdir -p $out/nix-support
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echo "file ${cfg.format} $diskImage" >> $out/nix-support/hydra-build-products
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${pkgs.jq}/bin/jq -n \
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--arg label ${lib.escapeShellArg config.system.nixos.label} \
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--arg system ${lib.escapeShellArg pkgs.stdenv.hostPlatform.system} \
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--arg logical_bytes "$(${pkgs.qemu}/bin/qemu-img info --output json "$diskImage" | ${pkgs.jq}/bin/jq '."virtual-size"')" \
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--arg file "$diskImage" \
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'$ARGS.named' \
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> $out/nix-support/image-info.json
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'';
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};
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}
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