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add LUKS BTRFS disko config

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This commit is contained in:
Daniel Langbein 2023-10-16 18:30:32 +02:00
parent d55f0082f8
commit c5d85e4b4a
Signed by: langfingaz
GPG Key ID: 6C47C753F0823002
2 changed files with 62 additions and 4 deletions
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58
template/disk-configs/luks-btrfs.nix Normal file
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@ -0,0 +1,58 @@
# Example taken form https://github.com/nix-community/disko/blob/master/example/luks-btrfs-subvolumes.nix
# cryptsetup luksOpen --allow-discards
#
# https://wiki.gentoo.org/wiki/Dm-crypt_full_disk_encryption#Dm-crypt_on_SSDs_and_hybrid_drives
# Cryptsetup can transparently forward discard operations to an SSD. This feature is activated by using the --allow-discards option in combination with cryptsetup open. Enabling discards on an encrypted SSD can be a measure to ensure effective wear leveling and longevity, especially if the full disk is encrypted. For an in detail discussion about the security implications, have a look at the cryptsetup FAQ and the man page of cryptsetup.
#
# https://man.archlinux.org/man/cryptsetup-luksOpen.8.en
# Can make filesystem-level operations visible on the physical device. For example, information leaking filesystem type, used space, etc. may be extractable from the physical device.
{ lib, ... }: {
disko.devices.disk = {
"disk1" = {
type = "disk";
device = lib.mkDefault "/dev/nvme0n1";
content = {
type = "gpt";
partitions = {
ESP = {
label = "EFI";
name = "ESP";
size = "512M";
type = "EF00";
content = {
type = "filesystem";
format = "vfat";
mountpoint = "/boot";
mountOptions = [
"defaults"
];
};
};
LUKS = {
size = "100%";
content = {
type = "luks";
name = "crypted";
extraOpenArgs = [ "--allow-discards" ];
# If you want to use the key for interactive login be sure there is no trailing newline.
# For example use `echo -n 'password' > /tmp/secret.key`
passwordFile = "/tmp/secret.key"; # Interactive login.
content = {
type = "btrfs";
extraArgs = [ "-f" ];
subvolumes = {
"/@" = {
mountpoint = "/";
mountOptions = [ "compress=zstd" "noatime" ];
};
};
};
};
};
};
};
};
};
}

8
template/disk-configs/luks-lvm.nix
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@ -1,9 +1,9 @@
{
{ lib, ... }: {
disko.devices = {
disk = {
disk1 = {
type = "disk";
device = "/dev/sda";
device = lib.mkDefault "/dev/nvme0n1";
content = {
type = "gpt";
partitions = {
@ -22,8 +22,8 @@
type = "luks";
name = "crypted";
extraOpenArgs = [ "--allow-discards" ];
# if you want to use the key for interactive login be sure there is no trailing newline
# for example use `echo -n "password" > /tmp/secret.key`
# If you want to use the key for interactive login be sure there is no trailing newline.
# For example use `echo -n 'password' > /tmp/secret.key`
settings.keyFile = "/tmp/secret.key";
content = {
type = "lvm_pv";