nixpkgs/nixos/tests/installer.nix
2018-07-20 18:48:37 +00:00

669 lines
24 KiB
Nix

{ system ? builtins.currentSystem }:
with import ../lib/testing.nix { inherit system; };
with pkgs.lib;
let
# The configuration to install.
makeConfig = { bootLoader, grubVersion, grubDevice, grubIdentifier, grubUseEfi
, extraConfig, forceGrubReinstallCount ? 0
}:
pkgs.writeText "configuration.nix" ''
{ config, lib, pkgs, modulesPath, ... }:
{ imports =
[ ./hardware-configuration.nix
<nixpkgs/nixos/modules/testing/test-instrumentation.nix>
];
# To ensure that we can rebuild the grub configuration on the nixos-rebuild
system.extraDependencies = with pkgs; [ stdenvNoCC ];
${optionalString (bootLoader == "grub") ''
boot.loader.grub.version = ${toString grubVersion};
${optionalString (grubVersion == 1) ''
boot.loader.grub.splashImage = null;
''}
boot.loader.grub.extraConfig = "serial; terminal_output.serial";
${if grubUseEfi then ''
boot.loader.grub.device = "nodev";
boot.loader.grub.efiSupport = true;
boot.loader.grub.efiInstallAsRemovable = true; # XXX: needed for OVMF?
'' else ''
boot.loader.grub.device = "${grubDevice}";
boot.loader.grub.fsIdentifier = "${grubIdentifier}";
''}
boot.loader.grub.configurationLimit = 100 + ${toString forceGrubReinstallCount};
''}
${optionalString (bootLoader == "systemd-boot") ''
boot.loader.systemd-boot.enable = true;
''}
users.users.alice = {
isNormalUser = true;
home = "/home/alice";
description = "Alice Foobar";
};
hardware.enableAllFirmware = lib.mkForce false;
services.udisks2.enable = lib.mkDefault false;
${replaceChars ["\n"] ["\n "] extraConfig}
}
'';
# The test script boots a NixOS VM, installs NixOS on an empty hard
# disk, and then reboot from the hard disk. It's parameterized with
# a test script fragment `createPartitions', which must create
# partitions and filesystems.
testScriptFun = { bootLoader, createPartitions, grubVersion, grubDevice, grubUseEfi
, grubIdentifier, preBootCommands, extraConfig
}:
let
iface = if grubVersion == 1 then "ide" else "virtio";
isEfi = bootLoader == "systemd-boot" || (bootLoader == "grub" && grubUseEfi);
# FIXME don't duplicate the -enable-kvm etc. flags here yet again!
qemuFlags =
(if system == "x86_64-linux" then "-m 768 " else "-m 512 ") +
(optionalString (system == "x86_64-linux") "-cpu kvm64 ") +
(optionalString (system == "aarch64-linux") "-enable-kvm -machine virt,gic-version=host -cpu host ");
hdFlags = ''hda => "vm-state-machine/machine.qcow2", hdaInterface => "${iface}", ''
+ optionalString isEfi (if pkgs.stdenv.isAarch64
then ''bios => "${pkgs.OVMF.fd}/FV/QEMU_EFI.fd", ''
else ''bios => "${pkgs.OVMF.fd}/FV/OVMF.fd", '');
in if !isEfi && !(pkgs.stdenv.isi686 || pkgs.stdenv.isx86_64) then
throw "Non-EFI boot methods are only supported on i686 / x86_64"
else ''
$machine->start;
# Make sure that we get a login prompt etc.
$machine->succeed("echo hello");
#$machine->waitForUnit('getty@tty2');
#$machine->waitForUnit("rogue");
$machine->waitForUnit("nixos-manual");
# Wait for hard disks to appear in /dev
$machine->succeed("udevadm settle");
# Partition the disk.
${createPartitions}
# Create the NixOS configuration.
$machine->succeed("nixos-generate-config --root /mnt");
$machine->succeed("cat /mnt/etc/nixos/hardware-configuration.nix >&2");
$machine->copyFileFromHost(
"${ makeConfig { inherit bootLoader grubVersion grubDevice grubIdentifier grubUseEfi extraConfig; } }",
"/mnt/etc/nixos/configuration.nix");
# Perform the installation.
$machine->succeed("nixos-install < /dev/null >&2");
# Do it again to make sure it's idempotent.
$machine->succeed("nixos-install < /dev/null >&2");
$machine->succeed("umount /mnt/boot || true");
$machine->succeed("umount /mnt");
$machine->succeed("sync");
$machine->shutdown;
# Now see if we can boot the installation.
$machine = createMachine({ ${hdFlags} qemuFlags => "${qemuFlags}", name => "boot-after-install" });
# For example to enter LUKS passphrase.
${preBootCommands}
# Did /boot get mounted?
$machine->waitForUnit("local-fs.target");
${if bootLoader == "grub" then
''$machine->succeed("test -e /boot/grub");''
else
''$machine->succeed("test -e /boot/loader/loader.conf");''
}
# Check whether /root has correct permissions.
$machine->succeed("stat -c '%a' /root") =~ /700/ or die;
# Did the swap device get activated?
# uncomment once https://bugs.freedesktop.org/show_bug.cgi?id=86930 is resolved
$machine->waitForUnit("swap.target");
$machine->succeed("cat /proc/swaps | grep -q /dev");
# Check that the store is in good shape
$machine->succeed("nix-store --verify --check-contents >&2");
# Check whether the channel works.
$machine->succeed("nix-env -iA nixos.procps >&2");
$machine->succeed("type -tP ps | tee /dev/stderr") =~ /.nix-profile/
or die "nix-env failed";
# Check that the daemon works, and that non-root users can run builds (this will build a new profile generation through the daemon)
$machine->succeed("su alice -l -c 'nix-env -iA nixos.procps' >&2");
# We need a writable Nix store on next boot.
$machine->copyFileFromHost(
"${ makeConfig { inherit bootLoader grubVersion grubDevice grubIdentifier grubUseEfi extraConfig; forceGrubReinstallCount = 1; } }",
"/etc/nixos/configuration.nix");
# Check whether nixos-rebuild works.
$machine->succeed("nixos-rebuild switch >&2");
# Test nixos-option.
$machine->succeed("nixos-option boot.initrd.kernelModules | grep virtio_console");
$machine->succeed("nixos-option boot.initrd.kernelModules | grep 'List of modules'");
$machine->succeed("nixos-option boot.initrd.kernelModules | grep qemu-guest.nix");
$machine->shutdown;
# Check whether a writable store build works
$machine = createMachine({ ${hdFlags} qemuFlags => "${qemuFlags}", name => "rebuild-switch" });
${preBootCommands}
$machine->waitForUnit("multi-user.target");
$machine->copyFileFromHost(
"${ makeConfig { inherit bootLoader grubVersion grubDevice grubIdentifier grubUseEfi extraConfig; forceGrubReinstallCount = 2; } }",
"/etc/nixos/configuration.nix");
$machine->succeed("nixos-rebuild boot >&2");
$machine->shutdown;
# And just to be sure, check that the machine still boots after
# "nixos-rebuild switch".
$machine = createMachine({ ${hdFlags} qemuFlags => "${qemuFlags}", "boot-after-rebuild-switch" });
${preBootCommands}
$machine->waitForUnit("network.target");
$machine->shutdown;
'';
makeInstallerTest = name:
{ createPartitions, preBootCommands ? "", extraConfig ? ""
, extraInstallerConfig ? {}
, bootLoader ? "grub" # either "grub" or "systemd-boot"
, grubVersion ? 2, grubDevice ? "/dev/vda", grubIdentifier ? "uuid", grubUseEfi ? false
, enableOCR ? false, meta ? {}
}:
makeTest {
inherit enableOCR;
name = "installer-" + name;
meta = with pkgs.stdenv.lib.maintainers; {
# put global maintainers here, individuals go into makeInstallerTest fkt call
maintainers = [ wkennington ] ++ (meta.maintainers or []);
};
nodes = {
# The configuration of the machine used to run "nixos-install".
machine =
{ config, lib, pkgs, ... }:
{ imports =
[ ../modules/profiles/installation-device.nix
../modules/profiles/base.nix
extraInstallerConfig
];
virtualisation.diskSize = 8 * 1024;
virtualisation.memorySize = 1024;
# Use a small /dev/vdb as the root disk for the
# installer. This ensures the target disk (/dev/vda) is
# the same during and after installation.
virtualisation.emptyDiskImages = [ 512 ];
virtualisation.bootDevice =
if grubVersion == 1 then "/dev/sdb" else "/dev/vdb";
virtualisation.qemu.diskInterface =
if grubVersion == 1 then "scsi" else "virtio";
boot.loader.systemd-boot.enable = mkIf (bootLoader == "systemd-boot") true;
hardware.enableAllFirmware = mkForce false;
# The test cannot access the network, so any packages we
# need must be included in the VM.
system.extraDependencies = with pkgs;
[ sudo
libxml2.bin
libxslt.bin
docbook5
docbook5_xsl
unionfs-fuse
ntp
nixos-artwork.wallpapers.gnome-dark
perlPackages.XMLLibXML
perlPackages.ListCompare
xorg.lndir
# add curl so that rather than seeing the test attempt to download
# curl's tarball, we see what it's trying to download
curl
]
++ optional (bootLoader == "grub" && grubVersion == 1) pkgs.grub
++ optionals (bootLoader == "grub" && grubVersion == 2) [ pkgs.grub2 pkgs.grub2_efi ];
services.udisks2.enable = mkDefault false;
nix.binaryCaches = mkForce [ ];
nix.extraOptions =
''
hashed-mirrors =
connect-timeout = 1
'';
};
};
testScript = testScriptFun {
inherit bootLoader createPartitions preBootCommands
grubVersion grubDevice grubIdentifier grubUseEfi extraConfig;
};
};
in {
# !!! `parted mkpart' seems to silently create overlapping partitions.
# The (almost) simplest partitioning scheme: a swap partition and
# one big filesystem partition.
simple = makeInstallerTest "simple"
{ createPartitions =
''
$machine->succeed(
"parted --script /dev/vda mklabel msdos",
"parted --script /dev/vda -- mkpart primary linux-swap 1M 1024M",
"parted --script /dev/vda -- mkpart primary ext2 1024M -1s",
"udevadm settle",
"mkswap /dev/vda1 -L swap",
"swapon -L swap",
"mkfs.ext3 -L nixos /dev/vda2",
"mount LABEL=nixos /mnt",
);
'';
};
# Simple GPT/UEFI configuration using systemd-boot with 3 partitions: ESP, swap & root filesystem
simpleUefiSystemdBoot = makeInstallerTest "simpleUefiSystemdBoot"
{ createPartitions =
''
$machine->succeed(
"parted --script /dev/vda mklabel gpt",
"parted --script /dev/vda -- mkpart ESP fat32 1M 50MiB", # /boot
"parted --script /dev/vda -- set 1 boot on",
"parted --script /dev/vda -- mkpart primary linux-swap 50MiB 1024MiB",
"parted --script /dev/vda -- mkpart primary ext2 1024MiB -1MiB", # /
"udevadm settle",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"mkfs.ext3 -L nixos /dev/vda3",
"mount LABEL=nixos /mnt",
"mkfs.vfat -n BOOT /dev/vda1",
"mkdir -p /mnt/boot",
"mount LABEL=BOOT /mnt/boot",
);
'';
bootLoader = "systemd-boot";
};
simpleUefiGrub = makeInstallerTest "simpleUefiGrub"
{ createPartitions =
''
$machine->succeed(
"parted --script /dev/vda mklabel gpt",
"parted --script /dev/vda -- mkpart ESP fat32 1M 50MiB", # /boot
"parted --script /dev/vda -- set 1 boot on",
"parted --script /dev/vda -- mkpart primary linux-swap 50MiB 1024MiB",
"parted --script /dev/vda -- mkpart primary ext2 1024MiB -1MiB", # /
"udevadm settle",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"mkfs.ext3 -L nixos /dev/vda3",
"mount LABEL=nixos /mnt",
"mkfs.vfat -n BOOT /dev/vda1",
"mkdir -p /mnt/boot",
"mount LABEL=BOOT /mnt/boot",
);
'';
bootLoader = "grub";
grubUseEfi = true;
};
# Same as the previous, but now with a separate /boot partition.
separateBoot = makeInstallerTest "separateBoot"
{ createPartitions =
''
$machine->succeed(
"parted --script /dev/vda mklabel msdos",
"parted --script /dev/vda -- mkpart primary ext2 1M 50MB", # /boot
"parted --script /dev/vda -- mkpart primary linux-swap 50MB 1024M",
"parted --script /dev/vda -- mkpart primary ext2 1024M -1s", # /
"udevadm settle",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"mkfs.ext3 -L nixos /dev/vda3",
"mount LABEL=nixos /mnt",
"mkfs.ext3 -L boot /dev/vda1",
"mkdir -p /mnt/boot",
"mount LABEL=boot /mnt/boot",
);
'';
};
# Same as the previous, but with fat32 /boot.
separateBootFat = makeInstallerTest "separateBootFat"
{ createPartitions =
''
$machine->succeed(
"parted --script /dev/vda mklabel msdos",
"parted --script /dev/vda -- mkpart primary ext2 1M 50MB", # /boot
"parted --script /dev/vda -- mkpart primary linux-swap 50MB 1024M",
"parted --script /dev/vda -- mkpart primary ext2 1024M -1s", # /
"udevadm settle",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"mkfs.ext3 -L nixos /dev/vda3",
"mount LABEL=nixos /mnt",
"mkfs.vfat -n BOOT /dev/vda1",
"mkdir -p /mnt/boot",
"mount LABEL=BOOT /mnt/boot",
);
'';
};
# zfs on / with swap
zfsroot = makeInstallerTest "zfs-root"
{
extraInstallerConfig = {
boot.supportedFilesystems = [ "zfs" ];
};
extraConfig = ''
boot.supportedFilesystems = [ "zfs" ];
# Using by-uuid overrides the default of by-id, and is unique
# to the qemu disks, as they don't produce by-id paths for
# some reason.
boot.zfs.devNodes = "/dev/disk/by-uuid/";
networking.hostId = "00000000";
'';
createPartitions =
''
$machine->succeed(
"parted --script /dev/vda mklabel msdos",
"parted --script /dev/vda -- mkpart primary linux-swap 1M 1024M",
"parted --script /dev/vda -- mkpart primary 1024M -1s",
"udevadm settle",
"mkswap /dev/vda1 -L swap",
"swapon -L swap",
"zpool create rpool /dev/vda2",
"zfs create -o mountpoint=legacy rpool/root",
"mount -t zfs rpool/root /mnt",
"udevadm settle"
);
'';
};
# Create two physical LVM partitions combined into one volume group
# that contains the logical swap and root partitions.
lvm = makeInstallerTest "lvm"
{ createPartitions =
''
$machine->succeed(
"parted --script /dev/vda mklabel msdos",
"parted --script /dev/vda -- mkpart primary 1M 2048M", # PV1
"parted --script /dev/vda -- set 1 lvm on",
"parted --script /dev/vda -- mkpart primary 2048M -1s", # PV2
"parted --script /dev/vda -- set 2 lvm on",
"udevadm settle",
"pvcreate /dev/vda1 /dev/vda2",
"vgcreate MyVolGroup /dev/vda1 /dev/vda2",
"lvcreate --size 1G --name swap MyVolGroup",
"lvcreate --size 2G --name nixos MyVolGroup",
"mkswap -f /dev/MyVolGroup/swap -L swap",
"swapon -L swap",
"mkfs.xfs -L nixos /dev/MyVolGroup/nixos",
"mount LABEL=nixos /mnt",
);
'';
};
# Boot off an encrypted root partition
luksroot = makeInstallerTest "luksroot"
{ createPartitions = ''
$machine->succeed(
"parted --script /dev/vda mklabel msdos",
"parted --script /dev/vda -- mkpart primary ext2 1M 50MB", # /boot
"parted --script /dev/vda -- mkpart primary linux-swap 50M 1024M",
"parted --script /dev/vda -- mkpart primary 1024M -1s", # LUKS
"udevadm settle",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"modprobe dm_mod dm_crypt",
"echo -n supersecret | cryptsetup luksFormat -q /dev/vda3 -",
"echo -n supersecret | cryptsetup luksOpen --key-file - /dev/vda3 cryptroot",
"mkfs.ext3 -L nixos /dev/mapper/cryptroot",
"mount LABEL=nixos /mnt",
"mkfs.ext3 -L boot /dev/vda1",
"mkdir -p /mnt/boot",
"mount LABEL=boot /mnt/boot",
);
'';
extraConfig = ''
boot.kernelParams = lib.mkAfter [ "console=tty0" ];
'';
enableOCR = true;
preBootCommands = ''
$machine->start;
$machine->waitForText(qr/Enter passphrase/);
$machine->sendChars("supersecret\n");
'';
};
# Test whether opening encrypted filesystem with keyfile
# Checks for regression of missing cryptsetup, when no luks device without
# keyfile is configured
filesystemEncryptedWithKeyfile = makeInstallerTest "filesystemEncryptedWithKeyfile"
{ createPartitions = ''
$machine->succeed(
"parted --script /dev/vda mklabel msdos",
"parted --script /dev/vda -- mkpart primary ext2 1M 50MB", # /boot
"parted --script /dev/vda -- mkpart primary linux-swap 50M 1024M",
"parted --script /dev/vda -- mkpart primary 1024M 1280M", # LUKS with keyfile
"parted --script /dev/vda -- mkpart primary 1280M -1s",
"udevadm settle",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"mkfs.ext3 -L nixos /dev/vda4",
"mount LABEL=nixos /mnt",
"mkfs.ext3 -L boot /dev/vda1",
"mkdir -p /mnt/boot",
"mount LABEL=boot /mnt/boot",
"modprobe dm_mod dm_crypt",
"echo -n supersecret > /mnt/keyfile",
"cryptsetup luksFormat -q /dev/vda3 --key-file /mnt/keyfile",
"cryptsetup luksOpen --key-file /mnt/keyfile /dev/vda3 crypt",
"mkfs.ext3 -L test /dev/mapper/crypt",
"cryptsetup luksClose crypt",
"mkdir -p /mnt/test"
);
'';
extraConfig = ''
fileSystems."/test" =
{ device = "/dev/disk/by-label/test";
fsType = "ext3";
encrypted.enable = true;
encrypted.blkDev = "/dev/vda3";
encrypted.label = "crypt";
encrypted.keyFile = "/mnt-root/keyfile";
};
'';
};
swraid = makeInstallerTest "swraid"
{ createPartitions =
''
$machine->succeed(
"parted --script /dev/vda --"
. " mklabel msdos"
. " mkpart primary ext2 1M 100MB" # /boot
. " mkpart extended 100M -1s"
. " mkpart logical 102M 2102M" # md0 (root), first device
. " mkpart logical 2103M 4103M" # md0 (root), second device
. " mkpart logical 4104M 4360M" # md1 (swap), first device
. " mkpart logical 4361M 4617M", # md1 (swap), second device
"udevadm settle",
"ls -l /dev/vda* >&2",
"cat /proc/partitions >&2",
"mdadm --create --force /dev/md0 --metadata 1.2 --level=raid1 --raid-devices=2 /dev/vda5 /dev/vda6",
"mdadm --create --force /dev/md1 --metadata 1.2 --level=raid1 --raid-devices=2 /dev/vda7 /dev/vda8",
"udevadm settle",
"mkswap -f /dev/md1 -L swap",
"swapon -L swap",
"mkfs.ext3 -L nixos /dev/md0",
"mount LABEL=nixos /mnt",
"mkfs.ext3 -L boot /dev/vda1",
"mkdir /mnt/boot",
"mount LABEL=boot /mnt/boot",
"udevadm settle",
);
'';
preBootCommands = ''
$machine->start;
$machine->fail("dmesg | grep 'immediate safe mode'");
'';
};
# Test a basic install using GRUB 1.
grub1 = makeInstallerTest "grub1"
{ createPartitions =
''
$machine->succeed(
"parted --script /dev/sda mklabel msdos",
"parted --script /dev/sda -- mkpart primary linux-swap 1M 1024M",
"parted --script /dev/sda -- mkpart primary ext2 1024M -1s",
"udevadm settle",
"mkswap /dev/sda1 -L swap",
"swapon -L swap",
"mkfs.ext3 -L nixos /dev/sda2",
"mount LABEL=nixos /mnt",
);
'';
grubVersion = 1;
grubDevice = "/dev/sda";
};
# Test using labels to identify volumes in grub
simpleLabels = makeInstallerTest "simpleLabels" {
createPartitions = ''
$machine->succeed(
"sgdisk -Z /dev/vda",
"sgdisk -n 1:0:+1M -n 2:0:+1G -N 3 -t 1:ef02 -t 2:8200 -t 3:8300 -c 3:root /dev/vda",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"mkfs.ext4 -L root /dev/vda3",
"mount LABEL=root /mnt",
);
'';
grubIdentifier = "label";
};
# Test using the provided disk name within grub
# TODO: Fix udev so the symlinks are unneeded in /dev/disks
simpleProvided = makeInstallerTest "simpleProvided" {
createPartitions = ''
my $UUID = "\$(blkid -s UUID -o value /dev/vda2)";
$machine->succeed(
"sgdisk -Z /dev/vda",
"sgdisk -n 1:0:+1M -n 2:0:+100M -n 3:0:+1G -N 4 -t 1:ef02 -t 2:8300 -t 3:8200 -t 4:8300 -c 2:boot -c 4:root /dev/vda",
"mkswap /dev/vda3 -L swap",
"swapon -L swap",
"mkfs.ext4 -L boot /dev/vda2",
"mkfs.ext4 -L root /dev/vda4",
);
$machine->execute("ln -s ../../vda2 /dev/disk/by-uuid/$UUID");
$machine->execute("ln -s ../../vda4 /dev/disk/by-label/root");
$machine->succeed(
"mount /dev/disk/by-label/root /mnt",
"mkdir /mnt/boot",
"mount /dev/disk/by-uuid/$UUID /mnt/boot"
);
'';
grubIdentifier = "provided";
};
# Simple btrfs grub testing
btrfsSimple = makeInstallerTest "btrfsSimple" {
createPartitions = ''
$machine->succeed(
"sgdisk -Z /dev/vda",
"sgdisk -n 1:0:+1M -n 2:0:+1G -N 3 -t 1:ef02 -t 2:8200 -t 3:8300 -c 3:root /dev/vda",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"mkfs.btrfs -L root /dev/vda3",
"mount LABEL=root /mnt",
);
'';
};
# Test to see if we can detect /boot and /nix on subvolumes
btrfsSubvols = makeInstallerTest "btrfsSubvols" {
createPartitions = ''
$machine->succeed(
"sgdisk -Z /dev/vda",
"sgdisk -n 1:0:+1M -n 2:0:+1G -N 3 -t 1:ef02 -t 2:8200 -t 3:8300 -c 3:root /dev/vda",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"mkfs.btrfs -L root /dev/vda3",
"btrfs device scan",
"mount LABEL=root /mnt",
"btrfs subvol create /mnt/boot",
"btrfs subvol create /mnt/nixos",
"btrfs subvol create /mnt/nixos/default",
"umount /mnt",
"mount -o defaults,subvol=nixos/default LABEL=root /mnt",
"mkdir /mnt/boot",
"mount -o defaults,subvol=boot LABEL=root /mnt/boot",
);
'';
};
# Test to see if we can detect default and aux subvolumes correctly
btrfsSubvolDefault = makeInstallerTest "btrfsSubvolDefault" {
createPartitions = ''
$machine->succeed(
"sgdisk -Z /dev/vda",
"sgdisk -n 1:0:+1M -n 2:0:+1G -N 3 -t 1:ef02 -t 2:8200 -t 3:8300 -c 3:root /dev/vda",
"mkswap /dev/vda2 -L swap",
"swapon -L swap",
"mkfs.btrfs -L root /dev/vda3",
"btrfs device scan",
"mount LABEL=root /mnt",
"btrfs subvol create /mnt/badpath",
"btrfs subvol create /mnt/badpath/boot",
"btrfs subvol create /mnt/nixos",
"btrfs subvol set-default \$(btrfs subvol list /mnt | grep 'nixos' | awk '{print \$2}') /mnt",
"umount /mnt",
"mount -o defaults LABEL=root /mnt",
"mkdir -p /mnt/badpath/boot", # Help ensure the detection mechanism is actually looking up subvolumes
"mkdir /mnt/boot",
"mount -o defaults,subvol=badpath/boot LABEL=root /mnt/boot",
);
'';
};
}