355 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			355 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ pkgs, system, ... }:
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with pkgs.lib;
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with import ../lib/qemu-flags.nix;
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let
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  # Build the ISO.  This is the regular installation CD but with test
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  # instrumentation.
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  iso =
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    (import ../lib/eval-config.nix {
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      inherit system;
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      modules =
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        [ ../modules/installer/cd-dvd/installation-cd-graphical.nix
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          ../modules/testing/test-instrumentation.nix
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          { key = "serial";
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            boot.loader.grub.timeout = mkOverride 0 0;
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            # The test cannot access the network, so any sources we
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            # need must be included in the ISO.
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            isoImage.storeContents =
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              [ pkgs.glibcLocales
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                pkgs.sudo
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                pkgs.docbook5
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                pkgs.docbook5_xsl
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                pkgs.grub
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                pkgs.perlPackages.XMLLibXML
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                pkgs.unionfs-fuse
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              ];
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          }
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        ];
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    }).config.system.build.isoImage;
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  # The configuration to install.
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  config = { fileSystems, testChannel, grubVersion, grubDevice }: pkgs.writeText "configuration.nix"
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    ''
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      { config, pkgs, modulesPath, ... }:
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      { imports =
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          [ ./hardware-configuration.nix
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            <nixpkgs/nixos/modules/testing/test-instrumentation.nix>
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          ];
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        boot.loader.grub.version = ${toString grubVersion};
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        ${optionalString (grubVersion == 1) ''
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          boot.loader.grub.splashImage = null;
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        ''}
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        boot.loader.grub.device = "${grubDevice}";
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        boot.loader.grub.extraConfig = "serial; terminal_output.serial";
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        environment.systemPackages = [ ${optionalString testChannel "pkgs.rlwrap"} ];
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      }
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    '';
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  rootFS =
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    ''
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      fileSystems."/".device = "/dev/disk/by-label/nixos";
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    '';
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  bootFS =
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    ''
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      fileSystems."/boot".device = "/dev/disk/by-label/boot";
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    '';
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  # Configuration of a web server that simulates the Nixpkgs channel
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  # distribution server.
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  webserver =
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    { config, pkgs, ... }:
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    { services.httpd.enable = true;
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      services.httpd.adminAddr = "foo@example.org";
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      services.httpd.servedDirs = singleton
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        { urlPath = "/";
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          dir = "/tmp/channel";
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        };
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      virtualisation.writableStore = true;
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      virtualisation.pathsInNixDB = channelContents ++ [ pkgs.hello.src ];
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      virtualisation.memorySize = 768;
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    };
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  channelContents = [ pkgs.rlwrap ];
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  # The test script boots the CD, installs NixOS on an empty hard
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  # disk, and then reboot from the hard disk.  It's parameterized with
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  # a test script fragment `createPartitions', which must create
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  # partitions and filesystems, and a configuration.nix fragment
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  # `fileSystems'.
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  testScriptFun = { createPartitions, fileSystems, testChannel, grubVersion, grubDevice }:
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    let iface = if grubVersion == 1 then "scsi" else "virtio"; in
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    ''
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      createDisk("harddisk", 4 * 1024);
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      my $machine = createMachine({ hda => "harddisk",
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        hdaInterface => "${iface}",
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        cdrom => glob("${iso}/iso/*.iso"),
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        qemuFlags => '${optionalString testChannel (toString (qemuNICFlags 1 1 2))} ${optionalString (pkgs.stdenv.system == "x86_64-linux") "-cpu kvm64"}'});
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      $machine->start;
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      ${optionalString testChannel ''
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        # Create a channel on the web server containing a few packages
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        # to simulate the Nixpkgs channel.
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        $webserver->start;
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        $webserver->waitForUnit("httpd");
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        $webserver->succeed(
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            "nix-push --bzip2 --dest /tmp/channel --manifest --url-prefix http://nixos.org/channels/nixos-unstable " .
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            "${toString channelContents} >&2");
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        $webserver->succeed("mkdir /tmp/channel/sha256");
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        $webserver->succeed("cp ${pkgs.hello.src} /tmp/channel/sha256/${pkgs.hello.src.outputHash}");
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      ''}
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      # Make sure that we get a login prompt etc.
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      $machine->succeed("echo hello");
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      #$machine->waitForUnit('getty@tty2');
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      $machine->waitForUnit("rogue");
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      $machine->waitForUnit("nixos-manual");
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      $machine->waitForUnit("dhcpcd");
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      ${optionalString testChannel ''
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        # Allow the machine to talk to the fake nixos.org.
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        $machine->succeed(
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            "rm /etc/hosts",
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            "echo 192.168.1.1 nixos.org cache.nixos.org tarballs.nixos.org > /etc/hosts",
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            "ifconfig eth1 up 192.168.1.2",
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        );
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        # Test nix-env.
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        $machine->fail("hello");
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        $machine->succeed("nix-env -i hello");
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        $machine->succeed("hello") =~ /Hello, world/
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            or die "bad `hello' output";
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      ''}
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      # Partition the disk.
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      ${createPartitions}
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      # Create the NixOS configuration.
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      $machine->succeed(
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          "nixos-generate-config --root /mnt",
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      );
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      $machine->succeed("cat /mnt/etc/nixos/hardware-configuration.nix >&2");
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      $machine->copyFileFromHost(
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          "${ config { inherit fileSystems testChannel grubVersion grubDevice; } }",
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          "/mnt/etc/nixos/configuration.nix");
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      # Perform the installation.
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      $machine->succeed("nixos-install >&2");
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      # Do it again to make sure it's idempotent.
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      $machine->succeed("nixos-install >&2");
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      $machine->shutdown;
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      # Now see if we can boot the installation.
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      my $machine = createMachine({ hda => "harddisk", hdaInterface => "${iface}" });
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      # Did /boot get mounted, if appropriate?
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      $machine->waitForUnit("local-fs.target");
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      $machine->succeed("test -e /boot/grub");
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      # Did the swap device get activated?
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      $machine->waitForUnit("swap.target");
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      $machine->succeed("cat /proc/swaps | grep -q /dev");
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      $machine->succeed("nix-env -i coreutils >&2");
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      $machine->succeed("type -tP ls | tee /dev/stderr") =~ /.nix-profile/
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          or die "nix-env failed";
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      $machine->succeed("nixos-rebuild switch >&2");
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      # Test nixos-option.
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      $machine->succeed("nixos-option boot.initrd.kernelModules | grep virtio_console");
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      $machine->succeed("nixos-option -d boot.initrd.kernelModules | grep 'List of modules'");
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      $machine->succeed("nixos-option -l boot.initrd.kernelModules | grep qemu-guest.nix");
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      $machine->shutdown;
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      # And just to be sure, check that the machine still boots after
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      # "nixos-rebuild switch".
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      my $machine = createMachine({ hda => "harddisk", hdaInterface => "${iface}" });
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      $machine->waitForUnit("network.target");
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      $machine->shutdown;
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    '';
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  makeTest = { createPartitions, fileSystems, testChannel ? false, grubVersion ? 2, grubDevice ? "/dev/vda" }:
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    { inherit iso;
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      nodes = if testChannel then { inherit webserver; } else { };
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      testScript = testScriptFun {
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        inherit createPartitions fileSystems testChannel grubVersion grubDevice;
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      };
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    };
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in {
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  # !!! `parted mkpart' seems to silently create overlapping partitions.
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  # The (almost) simplest partitioning scheme: a swap partition and
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  # one big filesystem partition.
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  simple = makeTest
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    { createPartitions =
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        ''
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          $machine->succeed(
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              "parted /dev/vda mklabel msdos",
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              "parted /dev/vda -- mkpart primary linux-swap 1M 1024M",
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              "parted /dev/vda -- mkpart primary ext2 1024M -1s",
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              "udevadm settle",
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              "mkswap /dev/vda1 -L swap",
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              "swapon -L swap",
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              "mkfs.ext3 -L nixos /dev/vda2",
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              "mount LABEL=nixos /mnt",
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          );
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        '';
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      fileSystems = rootFS;
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      testChannel = true;
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    };
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  # Same as the previous, but now with a separate /boot partition.
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  separateBoot = makeTest
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    { createPartitions =
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        ''
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          $machine->succeed(
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              "parted /dev/vda mklabel msdos",
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              "parted /dev/vda -- mkpart primary ext2 1M 50MB", # /boot
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              "parted /dev/vda -- mkpart primary linux-swap 50MB 1024M",
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              "parted /dev/vda -- mkpart primary ext2 1024M -1s", # /
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              "udevadm settle",
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              "mkswap /dev/vda2 -L swap",
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              "swapon -L swap",
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              "mkfs.ext3 -L nixos /dev/vda3",
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              "mount LABEL=nixos /mnt",
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              "mkfs.ext3 -L boot /dev/vda1",
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              "mkdir -p /mnt/boot",
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              "mount LABEL=boot /mnt/boot",
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          );
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        '';
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      fileSystems = rootFS + bootFS;
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    };
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  # Create two physical LVM partitions combined into one volume group
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  # that contains the logical swap and root partitions.
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  lvm = makeTest
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    { createPartitions =
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        ''
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          $machine->succeed(
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              "parted /dev/vda mklabel msdos",
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              "parted /dev/vda -- mkpart primary 1M 2048M", # PV1
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              "parted /dev/vda -- set 1 lvm on",
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              "parted /dev/vda -- mkpart primary 2048M -1s", # PV2
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              "parted /dev/vda -- set 2 lvm on",
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              "udevadm settle",
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              "pvcreate /dev/vda1 /dev/vda2",
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              "vgcreate MyVolGroup /dev/vda1 /dev/vda2",
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              "lvcreate --size 1G --name swap MyVolGroup",
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              "lvcreate --size 2G --name nixos MyVolGroup",
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              "mkswap -f /dev/MyVolGroup/swap -L swap",
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              "swapon -L swap",
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              "mkfs.xfs -L nixos /dev/MyVolGroup/nixos",
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              "mount LABEL=nixos /mnt",
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          );
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        '';
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      fileSystems = rootFS;
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    };
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  /*
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  swraid = makeTest
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    { createPartitions =
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        ''
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          $machine->succeed(
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              "parted /dev/vda --"
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              . " mklabel msdos"
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              . " mkpart primary ext2 1M 30MB" # /boot
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              . " mkpart extended 30M -1s"
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              . " mkpart logical 31M 1531M" # md0 (root), first device
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              . " mkpart logical 1540M 3040M" # md0 (root), second device
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              . " mkpart logical 3050M 3306M" # md1 (swap), first device
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              . " mkpart logical 3320M 3576M", # md1 (swap), second device
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              "udevadm settle",
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              "ls -l /dev/vda* >&2",
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              "cat /proc/partitions >&2",
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              "mdadm --create --force /dev/md0 --metadata 1.2 --level=raid1 --raid-devices=2 /dev/vda5 /dev/vda6",
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              "mdadm --create --force /dev/md1 --metadata 1.2 --level=raid1 --raid-devices=2 /dev/vda7 /dev/vda8",
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              "udevadm settle",
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              "mkswap -f /dev/md1 -L swap",
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              "swapon -L swap",
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              "mkfs.ext3 -L nixos /dev/md0",
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              "mount LABEL=nixos /mnt",
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              "mkfs.ext3 -L boot /dev/vda1",
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              "mkdir /mnt/boot",
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              "mount LABEL=boot /mnt/boot",
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              "udevadm settle",
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              "mdadm -W /dev/md0", # wait for sync to finish; booting off an unsynced device tends to fail
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              "mdadm -W /dev/md1",
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          );
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        '';
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      fileSystems = rootFS + bootFS;
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    };
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  */
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  # Test a basic install using GRUB 1.
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  grub1 = makeTest
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    { createPartitions =
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        ''
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          $machine->succeed(
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              "parted /dev/sda mklabel msdos",
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              "parted /dev/sda -- mkpart primary linux-swap 1M 1024M",
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              "parted /dev/sda -- mkpart primary ext2 1024M -1s",
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              "udevadm settle",
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              "mkswap /dev/sda1 -L swap",
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              "swapon -L swap",
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              "mkfs.ext3 -L nixos /dev/sda2",
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              "mount LABEL=nixos /mnt",
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          );
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        '';
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      fileSystems = rootFS;
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      grubVersion = 1;
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      grubDevice = "/dev/sda";
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    };
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  # Rebuild the CD configuration with a little modification.
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  rebuildCD =
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    { inherit iso;
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      nodes = { };
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      testScript =
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        ''
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          my $machine = createMachine({ cdrom => glob("${iso}/iso/*.iso"), qemuFlags => '-m 768' });
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          $machine->start;
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          # Enable sshd service.
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          $machine->succeed(
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            "sed -i 's,^}\$,systemd.services.sshd.wantedBy = pkgs.lib.mkOverride 0 [\"multi-user.target\"]; },' /etc/nixos/configuration.nix"
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          );
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          $machine->succeed("cat /etc/nixos/configuration.nix >&2");
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          # Apply the new CD configuration.
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          $machine->succeed("nixos-rebuild test");
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          # Connect to it-self.
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          $machine->waitForUnit("sshd");
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          $machine->waitForOpenPort(22);
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          $machine->shutdown;
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        '';
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    };
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}
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