32d80aaaa5
Rather than relying on carefully avoiding touching the 9P-mounted /nix/store, we instead install a small NixOS system, similar to the installer tests, and boot from that. This avoids the various pitfalls associated with trying to unsuspend properly and trades off a bunch of boilerplate for what will hopefully be a more reliable test. Additionally, this test now actually tests booting the system using a bootloader, rather than the previous method of just booting the kernel directly.
120 lines
3.6 KiB
Nix
120 lines
3.6 KiB
Nix
# Test whether hibernation from partition works.
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{ system ? builtins.currentSystem
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, config ? {}
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, pkgs ? import ../.. { inherit system config; }
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}:
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with import ../lib/testing-python.nix { inherit system pkgs; };
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let
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# System configuration of the installed system, which is used for the actual
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# hibernate testing.
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installedConfig = with pkgs.lib; {
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imports = [
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../modules/testing/test-instrumentation.nix
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../modules/profiles/qemu-guest.nix
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../modules/profiles/minimal.nix
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];
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hardware.enableAllFirmware = mkForce false;
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documentation.nixos.enable = false;
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boot.loader.grub.device = "/dev/vda";
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systemd.services.backdoor.conflicts = [ "sleep.target" ];
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powerManagement.resumeCommands = "systemctl --no-block restart backdoor.service";
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fileSystems = {
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"/".device = "/dev/vda2";
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};
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swapDevices = mkOverride 0 [ { device = "/dev/vda1"; } ];
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};
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installedSystem = (import ../lib/eval-config.nix {
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inherit system;
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modules = [ installedConfig ];
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}).config.system.build.toplevel;
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in makeTest {
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name = "hibernate";
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nodes = {
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# System configuration used for installing the installedConfig from above.
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machine = { config, lib, pkgs, ... }: with lib; {
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imports = [
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../modules/profiles/installation-device.nix
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../modules/profiles/base.nix
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];
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nix.binaryCaches = mkForce [ ];
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nix.extraOptions = ''
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hashed-mirrors =
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connect-timeout = 1
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'';
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virtualisation.diskSize = 8 * 1024;
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virtualisation.emptyDiskImages = [
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# Small root disk for installer
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512
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];
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virtualisation.bootDevice = "/dev/vdb";
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};
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};
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# 9P doesn't support reconnection to virtio transport after a hibernation.
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# Therefore, machine just hangs on any Nix store access.
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# To avoid this, we install NixOS onto a temporary disk with everything we need
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# included into the store.
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testScript =
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''
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def create_named_machine(name):
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return create_machine(
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{
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"qemuFlags": "-cpu max ${
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if system == "x86_64-linux" then "-m 1024"
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else "-m 768 -enable-kvm -machine virt,gic-version=host"}",
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"hdaInterface": "virtio",
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"hda": "vm-state-machine/machine.qcow2",
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"name": name,
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}
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)
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# Install NixOS
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machine.start()
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machine.succeed(
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# Partition /dev/vda
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"flock /dev/vda parted --script /dev/vda -- mklabel msdos"
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+ " mkpart primary linux-swap 1M 1024M"
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+ " mkpart primary ext2 1024M -1s",
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"udevadm settle",
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"mkfs.ext3 -L nixos /dev/vda2",
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"mount LABEL=nixos /mnt",
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"mkswap /dev/vda1 -L swap",
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# Install onto /mnt
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"nix-store --load-db < ${pkgs.closureInfo {rootPaths = [installedSystem];}}/registration",
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"nixos-install --root /mnt --system ${installedSystem} --no-root-passwd",
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)
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machine.shutdown()
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# Start up
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hibernate = create_named_machine("hibernate")
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# Drop in file that checks if we un-hibernated properly (and not booted fresh)
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hibernate.succeed(
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"mkdir /run/test",
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"mount -t ramfs -o size=1m ramfs /run/test",
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"echo not persisted to disk > /run/test/suspended",
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)
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# Hibernate machine
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hibernate.succeed("systemctl hibernate &")
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hibernate.wait_for_shutdown()
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# Restore machine from hibernation, validate our ramfs file is there.
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resume = create_named_machine("resume")
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resume.start()
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resume.succeed("grep 'not persisted to disk' /run/test/suspended")
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'';
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}
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