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https://github.com/NixOS/nixpkgs.git
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38bca8d36f
Apparently merging #43021 1bdb138710 did increase memory usage
in some cases. 1 GiB for a VM memory seems still low enough to me.
101 lines
3.4 KiB
Nix
101 lines
3.4 KiB
Nix
# Test for NixOS' container support.
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import ./make-test.nix ({ pkgs, ...} : {
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name = "containers-imperative";
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meta = with pkgs.stdenv.lib.maintainers; {
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maintainers = [ aristid aszlig eelco chaoflow kampfschlaefer ];
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};
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machine =
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{ config, pkgs, lib, ... }:
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{ imports = [ ../modules/installer/cd-dvd/channel.nix ];
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virtualisation.writableStore = true;
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virtualisation.memorySize = 1024;
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# Make sure we always have all the required dependencies for creating a
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# container available within the VM, because we don't have network access.
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virtualisation.pathsInNixDB = let
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emptyContainer = import ../lib/eval-config.nix {
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inherit (config.nixpkgs.localSystem) system;
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modules = lib.singleton {
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containers.foo.config = {
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system.nixos.stateVersion = "18.03";
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};
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};
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};
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in [
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pkgs.stdenv pkgs.stdenvNoCC emptyContainer.config.containers.foo.path
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pkgs.libxslt
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];
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};
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testScript =
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''
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# Make sure we have a NixOS tree (required by ‘nixos-container create’).
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$machine->succeed("PAGER=cat nix-env -qa -A nixos.hello >&2");
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# Create some containers imperatively.
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my $id1 = $machine->succeed("nixos-container create foo --ensure-unique-name");
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chomp $id1;
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$machine->log("created container $id1");
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my $id2 = $machine->succeed("nixos-container create foo --ensure-unique-name");
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chomp $id2;
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$machine->log("created container $id2");
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die if $id1 eq $id2;
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# Put the root of $id2 into a bind mount.
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$machine->succeed(
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"mv /var/lib/containers/$id2 /id2-bindmount",
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"mount --bind /id2-bindmount /var/lib/containers/$id1"
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);
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my $ip1 = $machine->succeed("nixos-container show-ip $id1");
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chomp $ip1;
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my $ip2 = $machine->succeed("nixos-container show-ip $id2");
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chomp $ip2;
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die if $ip1 eq $ip2;
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# Create a directory and a file we can later check if it still exists
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# after destruction of the container.
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$machine->succeed(
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"mkdir /nested-bindmount",
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"echo important data > /nested-bindmount/dummy",
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);
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# Create a directory with a dummy file and bind-mount it into both
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# containers.
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foreach ($id1, $id2) {
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my $importantPath = "/var/lib/containers/$_/very/important/data";
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$machine->succeed(
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"mkdir -p $importantPath",
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"mount --bind /nested-bindmount $importantPath"
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);
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}
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# Start one of them.
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$machine->succeed("nixos-container start $id1");
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# Execute commands via the root shell.
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$machine->succeed("nixos-container run $id1 -- uname") =~ /Linux/ or die;
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# Stop and start (regression test for #4989)
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$machine->succeed("nixos-container stop $id1");
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$machine->succeed("nixos-container start $id1");
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# Execute commands via the root shell.
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$machine->succeed("nixos-container run $id1 -- uname") =~ /Linux/ or die;
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# Destroy the containers.
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$machine->succeed("nixos-container destroy $id1");
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$machine->succeed("nixos-container destroy $id2");
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$machine->succeed(
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# Check whether destruction of any container has killed important data
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"grep -qF 'important data' /nested-bindmount/dummy",
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# Ensure that the container path is gone
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"test ! -e /var/lib/containers/$id1"
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);
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'';
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})
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