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|
# Test whether hibernation from partition works.
{ system ? builtins.currentSystem
, config ? {}
, pkgs ? import ../.. { inherit system config; }
, systemdStage1 ? false
}:
with import ../lib/testing-python.nix { inherit system pkgs; };
let
# System configuration of the installed system, which is used for the actual
# hibernate testing.
installedConfig = with pkgs.lib; {
imports = [
../modules/testing/test-instrumentation.nix
../modules/profiles/qemu-guest.nix
../modules/profiles/minimal.nix
];
hardware.enableAllFirmware = mkForce false;
documentation.nixos.enable = false;
boot.loader.grub.device = "/dev/vda";
systemd.services.backdoor.conflicts = [ "sleep.target" ];
powerManagement.resumeCommands = "systemctl --no-block restart backdoor.service";
fileSystems = {
"/".device = "/dev/vda2";
};
swapDevices = mkOverride 0 [ { device = "/dev/vda1"; } ];
boot.resumeDevice = mkIf systemdStage1 "/dev/vda1";
boot.initrd.systemd = mkIf systemdStage1 {
enable = true;
emergencyAccess = true;
};
};
installedSystem = (import ../lib/eval-config.nix {
inherit system;
modules = [ installedConfig ];
}).config.system.build.toplevel;
in makeTest {
name = "hibernate";
nodes = {
# System configuration used for installing the installedConfig from above.
machine = { config, lib, pkgs, ... }: with lib; {
imports = [
../modules/profiles/installation-device.nix
../modules/profiles/base.nix
];
nix.settings = {
substituters = mkForce [];
hashed-mirrors = null;
connect-timeout = 1;
};
virtualisation.diskSize = 8 * 1024;
virtualisation.emptyDiskImages = [
# Small root disk for installer
512
];
virtualisation.bootDevice = "/dev/vdb";
};
};
# 9P doesn't support reconnection to virtio transport after a hibernation.
# Therefore, machine just hangs on any Nix store access.
# To avoid this, we install NixOS onto a temporary disk with everything we need
# included into the store.
testScript =
''
def create_named_machine(name):
machine = create_machine(
{
"qemuFlags": "-cpu max ${
if system == "x86_64-linux" then "-m 1024"
else "-m 768 -enable-kvm -machine virt,gic-version=host"}",
"hdaInterface": "virtio",
"hda": "vm-state-machine/machine.qcow2",
"name": name,
}
)
driver.machines.append(machine)
return machine
# Install NixOS
machine.start()
machine.succeed(
# Partition /dev/vda
"flock /dev/vda parted --script /dev/vda -- mklabel msdos"
+ " mkpart primary linux-swap 1M 1024M"
+ " mkpart primary ext2 1024M -1s",
"udevadm settle",
"mkfs.ext3 -L nixos /dev/vda2",
"mount LABEL=nixos /mnt",
"mkswap /dev/vda1 -L swap",
# Install onto /mnt
"nix-store --load-db < ${pkgs.closureInfo {rootPaths = [installedSystem];}}/registration",
"nixos-install --root /mnt --system ${installedSystem} --no-root-passwd --no-channel-copy >&2",
)
machine.shutdown()
# Start up
hibernate = create_named_machine("hibernate")
# Drop in file that checks if we un-hibernated properly (and not booted fresh)
hibernate.succeed(
"mkdir /run/test",
"mount -t ramfs -o size=1m ramfs /run/test",
"echo not persisted to disk > /run/test/suspended",
)
# Hibernate machine
hibernate.execute("systemctl hibernate >&2 &", check_return=False)
hibernate.wait_for_shutdown()
# Restore machine from hibernation, validate our ramfs file is there.
resume = create_named_machine("resume")
resume.start()
resume.succeed("grep 'not persisted to disk' /run/test/suspended")
# Ensure we don't restore from hibernation when booting again
resume.crash()
resume.wait_for_unit("default.target")
resume.fail("grep 'not persisted to disk' /run/test/suspended")
'';
}
|