nixpkgs/nixos/tests/non-default-filesystems.nix
Alyssa Ross a92bc576b1
nixos/stage-1: support bind mounts of files
On my system, / is tmpfs, and /etc/machine-id is bind mounted from
/persist.
2023-05-26 13:26:48 +00:00

132 lines
3.4 KiB
Nix

{ system ? builtins.currentSystem
, config ? { }
, pkgs ? import ../.. { inherit system config; }
}:
with import ../lib/testing-python.nix { inherit system pkgs; };
with pkgs.lib;
{
bind = makeTest {
name = "non-default-filesystem-bind";
nodes.machine = { ... }: {
virtualisation.writableStore = false;
virtualisation.fileSystems."/test-bind-dir/bind" = {
device = "/";
neededForBoot = true;
options = [ "bind" ];
};
virtualisation.fileSystems."/test-bind-file/bind" = {
depends = [ "/nix/store" ];
device = builtins.toFile "empty" "";
neededForBoot = true;
options = [ "bind" ];
};
};
testScript = ''
machine.wait_for_unit("multi-user.target")
'';
};
btrfs = makeTest
{
name = "non-default-filesystems-btrfs";
nodes.machine =
{ config, pkgs, lib, ... }:
let
disk = config.virtualisation.rootDevice;
in
{
virtualisation.rootDevice = "/dev/vda";
virtualisation.useDefaultFilesystems = false;
boot.initrd.availableKernelModules = [ "btrfs" ];
boot.supportedFilesystems = [ "btrfs" ];
boot.initrd.postDeviceCommands = ''
FSTYPE=$(blkid -o value -s TYPE ${disk} || true)
if test -z "$FSTYPE"; then
modprobe btrfs
${pkgs.btrfs-progs}/bin/mkfs.btrfs ${disk}
mkdir /nixos
mount -t btrfs ${disk} /nixos
${pkgs.btrfs-progs}/bin/btrfs subvolume create /nixos/root
${pkgs.btrfs-progs}/bin/btrfs subvolume create /nixos/home
umount /nixos
fi
'';
virtualisation.fileSystems = {
"/" = {
device = disk;
fsType = "btrfs";
options = [ "subvol=/root" ];
};
"/home" = {
device = disk;
fsType = "btrfs";
options = [ "subvol=/home" ];
};
};
};
testScript = ''
machine.wait_for_unit("multi-user.target")
with subtest("BTRFS filesystems are mounted correctly"):
machine.succeed("grep -E '/dev/vda / btrfs rw,relatime,space_cache=v2,subvolid=[0-9]+,subvol=/root 0 0' /proc/mounts")
machine.succeed("grep -E '/dev/vda /home btrfs rw,relatime,space_cache=v2,subvolid=[0-9]+,subvol=/home 0 0' /proc/mounts")
'';
};
erofs =
let
fsImage = "/tmp/non-default-filesystem.img";
in
makeTest {
name = "non-default-filesystems-erofs";
nodes.machine = _: {
virtualisation.qemu.drives = [{
name = "non-default-filesystem";
file = fsImage;
}];
virtualisation.fileSystems."/non-default" = {
device = "/dev/vdb";
fsType = "erofs";
neededForBoot = true;
};
};
testScript = ''
import subprocess
import tempfile
with tempfile.TemporaryDirectory() as tmp_dir:
with open(f"{tmp_dir}/filesystem", "w") as f:
f.write("erofs")
subprocess.run([
"${pkgs.erofs-utils}/bin/mkfs.erofs",
"${fsImage}",
tmp_dir,
])
machine.start()
machine.wait_for_unit("default.target")
file_contents = machine.succeed("cat /non-default/filesystem")
assert "erofs" in file_contents
'';
};
}