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nixpkgs/nixos/tests/hibernate.nix
2019-11-22 20:38:56 +01:00

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Nix

# Test whether hibernation from partition works.
import ./make-test-python.nix (pkgs: {
name = "hibernate";
nodes = {
machine = { config, lib, pkgs, ... }: with lib; {
virtualisation.emptyDiskImages = [ config.virtualisation.memorySize ];
systemd.services.backdoor.conflicts = [ "sleep.target" ];
swapDevices = mkOverride 0 [ { device = "/dev/vdb"; } ];
networking.firewall.allowedTCPPorts = [ 4444 ];
systemd.services.listener.serviceConfig.ExecStart = "${pkgs.netcat}/bin/nc -l 4444 -k";
};
probe = { pkgs, ...}: {
environment.systemPackages = [ pkgs.netcat ];
};
};
# 9P doesn't support reconnection to virtio transport after a hibernation.
# Therefore, machine just hangs on any Nix store access.
# To work around it we run a daemon which listens to a TCP connection and
# try to connect to it as a test.
testScript =
''
machine.start()
machine.wait_for_unit("multi-user.target")
machine.succeed("mkswap /dev/vdb")
machine.succeed("swapon -a")
machine.start_job("listener")
machine.wait_for_open_port(4444)
machine.succeed("systemctl hibernate &")
machine.wait_for_shutdown()
probe.wait_for_unit("multi-user.target")
machine.start()
probe.wait_until_succeeds("echo test | nc machine 4444 -N")
'';
})