pyrox.dev
1import ./make-test-python.nix (
2 { lib, ... }:
3 {
4 name = "swap-file-btrfs";
5
6 meta.maintainers = with lib.maintainers; [ oxalica ];
7
8 nodes.machine =
9 { pkgs, ... }:
10 {
11 virtualisation.useDefaultFilesystems = false;
12
13 virtualisation.rootDevice = "/dev/vda";
14
15 boot.initrd.postDeviceCommands = ''
16 ${pkgs.btrfs-progs}/bin/mkfs.btrfs --label root /dev/vda
17 '';
18
19 virtualisation.fileSystems = {
20 "/" = {
21 device = "/dev/disk/by-label/root";
22 fsType = "btrfs";
23 };
24 };
25
26 swapDevices = [
27 {
28 device = "/var/swapfile";
29 size = 1; # 1MiB.
30 }
31 ];
32 };
33
34 testScript = ''
35 machine.wait_for_unit('var-swapfile.swap')
36 # Ensure the swap file creation script ran to completion without failing when creating the swap file
37 machine.fail("systemctl is-failed --quiet mkswap-var-swapfile.service")
38 machine.succeed("stat --file-system --format=%T /var/swapfile | grep btrfs")
39 # First run. Auto creation.
40 machine.succeed("swapon --show | grep /var/swapfile")
41
42 machine.shutdown()
43 machine.start()
44
45 # Second run. Use it as-is.
46 machine.wait_for_unit('var-swapfile.swap')
47 # Ensure the swap file creation script ran to completion without failing when the swap file already exists
48 machine.fail("systemctl is-failed --quiet mkswap-var-swapfile.service")
49 machine.succeed("swapon --show | grep /var/swapfile")
50 '';
51 }
52)