101 lines
3.1 KiB
Nix
101 lines
3.1 KiB
Nix
# nix-build '<nixpkgs/nixos>' -A config.system.build.openstackImage --arg configuration "{ imports = [ ./nixos/maintainers/scripts/openstack/openstack-image.nix ]; }"
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{ config, lib, pkgs, ... }:
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let
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inherit (lib) mkOption types;
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copyChannel = true;
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cfg = config.openstackImage;
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imageBootMode = if config.openstack.efi then "uefi" else "legacy-bios";
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in
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{
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imports = [
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../../../modules/virtualisation/openstack-config.nix
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] ++ (lib.optional copyChannel ../../../modules/installer/cd-dvd/channel.nix);
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options.openstackImage = {
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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-openstack-image-${config.system.nixos.label}-${pkgs.stdenv.hostPlatform.system}";
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};
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sizeMB = mkOption {
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type = types.int;
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default = 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" ];
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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 = {
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documentation.enable = copyChannel;
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openstack = {
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efi = true;
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zfs = {
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enable = true;
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datasets = {
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"tank/system/root".mount = "/";
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"tank/system/var".mount = "/var";
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"tank/local/nix".mount = "/nix";
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"tank/user/home".mount = "/home";
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};
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};
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};
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system.build.openstackImage = import ../../../lib/make-single-disk-zfs-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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configFile = pkgs.writeText "configuration.nix"
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''
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{ modulesPath, ... }: {
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imports = [ "''${modulesPath}/virtualisation/openstack-config.nix" ];
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openstack.zfs.enable = true;
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}
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'';
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includeChannel = copyChannel;
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bootSize = 1000;
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rootSize = cfg.sizeMB;
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rootPoolProperties = {
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ashift = 12;
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autoexpand = "on";
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};
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datasets = config.openstack.zfs.datasets;
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postVM = ''
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extension=''${rootDiskImage##*.}
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friendlyName=$out/${cfg.name}
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rootDisk="$friendlyName.root.$extension"
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mv "$rootDiskImage" "$rootDisk"
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mkdir -p $out/nix-support
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echo "file ${cfg.format} $rootDisk" >> $out/nix-support/hydra-build-products
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${pkgs.jq}/bin/jq -n \
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--arg system_label ${lib.escapeShellArg config.system.nixos.label} \
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--arg system ${lib.escapeShellArg pkgs.stdenv.hostPlatform.system} \
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--arg root_logical_bytes "$(${pkgs.qemu}/bin/qemu-img info --output json "$rootDisk" | ${pkgs.jq}/bin/jq '."virtual-size"')" \
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--arg boot_mode "${imageBootMode}" \
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--arg root "$rootDisk" \
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'{}
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| .label = $system_label
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| .boot_mode = $boot_mode
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| .system = $system
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| .disks.root.logical_bytes = $root_logical_bytes
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| .disks.root.file = $root
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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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}
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