nixpkgs/nixos/tests/snapper.nix
2025-08-24 15:32:29 -04:00

46 lines
1.4 KiB
Nix

{ ... }:
{
name = "snapper";
nodes.machine =
{ pkgs, lib, ... }:
{
virtualisation.emptyDiskImages = [
{
size = 4096;
driveConfig.deviceExtraOpts.serial = "aux";
}
];
virtualisation.fileSystems = {
"/home" = {
device = "/dev/disk/by-id/virtio-aux";
fsType = "btrfs";
autoFormat = true;
};
};
services.snapper.configs.home.SUBVOLUME = "/home";
services.snapper.filters = "/nix";
};
testScript =
{ nodes, ... }:
let
inherit (nodes.machine.services.snapper) snapshotRootOnBoot;
in
''
machine.succeed("btrfs subvolume create /home/.snapshots")
machine.succeed("snapper -c home list")
machine.succeed("snapper -c home create --description empty")
machine.succeed("echo test > /home/file")
machine.succeed("snapper -c home create --description file")
machine.succeed("snapper -c home status 1..2")
machine.succeed("snapper -c home undochange 1..2")
machine.fail("ls /home/file")
machine.succeed("snapper -c home delete 2")
machine.succeed("systemctl --wait start snapper-timeline.service")
machine.succeed("systemctl --wait start snapper-cleanup.service")
machine.${if snapshotRootOnBoot then "succeed" else "fail"}("systemctl cat snapper-boot.service")
'';
}