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{ lib, ... }:
{
name = "systemd-initrd-btrfs-raid";
nodes.machine =
{ pkgs, ... }:
{
# Use systemd-boot
virtualisation = {
emptyDiskImages = [
512
512
];
useBootLoader = true;
# Booting off the BTRFS RAID requires an available init script from the Nix store
mountHostNixStore = true;
useEFIBoot = true;
};
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
environment.systemPackages = with pkgs; [ btrfs-progs ];
boot.initrd.systemd = {
enable = true;
emergencyAccess = true;
};
specialisation.boot-btrfs-raid.configuration = {
fileSystems = lib.mkVMOverride {
"/".fsType = lib.mkForce "btrfs";
};
virtualisation.rootDevice = "/dev/vdb";
};
};
testScript =
{ nodes, ... }:
let
boot-btrfs-raid = nodes.machine.specialisation.boot-btrfs-raid.configuration.system.build.toplevel;
in
# python
''
# Create RAID
machine.succeed("mkfs.btrfs -d raid0 /dev/vdb /dev/vdc")
machine.succeed("mkdir -p /mnt && mount /dev/vdb /mnt && echo hello > /mnt/test && umount /mnt")
# Boot from the RAID
machine.succeed("${boot-btrfs-raid}/bin/switch-to-configuration boot")
machine.succeed("sync")
machine.crash()
machine.wait_for_unit("multi-user.target")
# Ensure we have successfully booted from the RAID
assert "(initrd)" in machine.succeed("systemd-analyze") # booted with systemd in stage 1
assert "/dev/vdb on / type btrfs" in machine.succeed("mount")
assert "hello" in machine.succeed("cat /test")
assert "Total devices 2" in machine.succeed("btrfs filesystem show")
'';
}
|
