import ../make-test-python.nix ({ pkgs, lib, ... } : let releases = import ../../release.nix { configuration = { # Building documentation makes the test unnecessarily take a longer time: documentation.enable = lib.mkForce false; # Our tests require `grep` & friends: environment.systemPackages = with pkgs; [ busybox ]; }; }; lxd-image-metadata = releases.lxdContainerMeta.${pkgs.stdenv.hostPlatform.system}; lxd-image-rootfs = releases.lxdContainerImage.${pkgs.stdenv.hostPlatform.system}; lxd-image-rootfs-squashfs = releases.lxdContainerImageSquashfs.${pkgs.stdenv.hostPlatform.system}; in { name = "lxd-container"; nodes.machine = { lib, ... }: { virtualisation = { diskSize = 6144; # Since we're testing `limits.cpu`, we've gotta have a known number of # cores to lean on cores = 2; # Ditto, for `limits.memory` memorySize = 512; lxc.lxcfs.enable = true; lxd.enable = true; }; }; testScript = '' def instance_is_up(_) -> bool: status, _ = machine.execute("lxc exec container --disable-stdin --force-interactive /run/current-system/sw/bin/true") return status == 0 machine.wait_for_unit("sockets.target") machine.wait_for_unit("lxd.service") machine.wait_for_file("/var/lib/lxd/unix.socket") # Wait for lxd to settle machine.succeed("lxd waitready") # no preseed should mean no service machine.fail("systemctl status lxd-preseed.service") machine.succeed("lxd init --minimal") machine.succeed( "lxc image import ${lxd-image-metadata}/*/*.tar.xz ${lxd-image-rootfs}/*/*.tar.xz --alias nixos" ) with subtest("Container can be managed"): machine.succeed("lxc launch nixos container") with machine.nested("Waiting for instance to start and be usable"): retry(instance_is_up) machine.succeed("echo true | lxc exec container /run/current-system/sw/bin/bash -") machine.succeed("lxc delete -f container") with subtest("Squashfs image is functional"): machine.succeed( "lxc image import ${lxd-image-metadata}/*/*.tar.xz ${lxd-image-rootfs-squashfs}/nixos-lxc-image-${pkgs.stdenv.hostPlatform.system}.squashfs --alias nixos-squashfs" ) machine.succeed("lxc launch nixos-squashfs container") with machine.nested("Waiting for instance to start and be usable"): retry(instance_is_up) machine.succeed("echo true | lxc exec container /run/current-system/sw/bin/bash -") machine.succeed("lxc delete -f container") with subtest("Container is mounted with lxcfs inside"): machine.succeed("lxc launch nixos container") with machine.nested("Waiting for instance to start and be usable"): retry(instance_is_up) ## ---------- ## ## limits.cpu ## machine.succeed("lxc config set container limits.cpu 1") machine.succeed("lxc restart container") with machine.nested("Waiting for instance to start and be usable"): retry(instance_is_up) assert ( "1" == machine.succeed("lxc exec container grep -- -c ^processor /proc/cpuinfo").strip() ) machine.succeed("lxc config set container limits.cpu 2") machine.succeed("lxc restart container") with machine.nested("Waiting for instance to start and be usable"): retry(instance_is_up) assert ( "2" == machine.succeed("lxc exec container grep -- -c ^processor /proc/cpuinfo").strip() ) ## ------------- ## ## limits.memory ## machine.succeed("lxc config set container limits.memory 64MB") machine.succeed("lxc restart container") with machine.nested("Waiting for instance to start and be usable"): retry(instance_is_up) assert ( "MemTotal: 62500 kB" == machine.succeed("lxc exec container grep -- MemTotal /proc/meminfo").strip() ) machine.succeed("lxc config set container limits.memory 128MB") machine.succeed("lxc restart container") with machine.nested("Waiting for instance to start and be usable"): retry(instance_is_up) assert ( "MemTotal: 125000 kB" == machine.succeed("lxc exec container grep -- MemTotal /proc/meminfo").strip() ) machine.succeed("lxc delete -f container") ''; })