100 lines
2.9 KiB
Nix
100 lines
2.9 KiB
Nix
{
|
|
config,
|
|
lib,
|
|
...
|
|
}: {
|
|
options.host.impermanence.enable = lib.mkEnableOption "are we going to use impermanence on this device";
|
|
|
|
config = lib.mkMerge [
|
|
{
|
|
assertions = [
|
|
{
|
|
assertion = !(config.host.impermanence.enable && !config.host.storage.enable);
|
|
message = ''
|
|
Disko storage must be enabled to use impermanence.
|
|
'';
|
|
}
|
|
];
|
|
}
|
|
(
|
|
lib.mkIf config.host.impermanence.enable {
|
|
assertions = [
|
|
{
|
|
assertion = config.host.impermanence.enable && config.host.storage.enable;
|
|
message = "Impermanence can not be used without managed host storage.";
|
|
}
|
|
];
|
|
|
|
# fixes issues with /var/lib/private not having the correct permissions https://github.com/nix-community/impermanence/issues/254
|
|
system.activationScripts."createPersistentStorageDirs".deps = ["var-lib-private-permissions" "users" "groups"];
|
|
system.activationScripts = {
|
|
"var-lib-private-permissions" = {
|
|
deps = ["specialfs"];
|
|
text = ''
|
|
mkdir -p /persist/system/root/var/lib/private
|
|
chmod 0700 /persist/system/root/var/lib/private
|
|
'';
|
|
};
|
|
};
|
|
|
|
programs.fuse.userAllowOther = true;
|
|
|
|
boot.initrd.postResumeCommands = lib.mkAfter ''
|
|
zfs rollback -r rpool/local/system/root@blank
|
|
'';
|
|
|
|
fileSystems = {
|
|
"/".neededForBoot = true;
|
|
"/persist/system/root".neededForBoot = true;
|
|
"/persist/system/var/log".neededForBoot = true;
|
|
};
|
|
|
|
host.storage.pool.extraDatasets = {
|
|
# persist datasets are datasets that contain information that we would like to keep around
|
|
"persist" = {
|
|
type = "zfs_fs";
|
|
options.canmount = "off";
|
|
options = {
|
|
"com.sun:auto-snapshot" = "true";
|
|
};
|
|
};
|
|
# this is where root data actually lives
|
|
"persist/system/root" = {
|
|
type = "zfs_fs";
|
|
mountpoint = "/persist/system/root";
|
|
};
|
|
"persist/system/var/log" = {
|
|
type = "zfs_fs";
|
|
mountpoint = "/persist/system/var/log";
|
|
# logs should be append only so we shouldn't need to snapshot them
|
|
options = {
|
|
"com.sun:auto-snapshot" = "false";
|
|
};
|
|
};
|
|
};
|
|
|
|
environment.persistence."/persist/system/var/log" = {
|
|
enable = true;
|
|
hideMounts = true;
|
|
directories = [
|
|
"/var/log"
|
|
];
|
|
};
|
|
|
|
environment.persistence."/persist/system/root" = {
|
|
enable = true;
|
|
hideMounts = true;
|
|
directories = [
|
|
"/var/lib/nixos"
|
|
"/var/lib/systemd/coredump"
|
|
];
|
|
files = [
|
|
"/etc/machine-id"
|
|
];
|
|
};
|
|
|
|
security.sudo.extraConfig = "Defaults lecture=never";
|
|
}
|
|
)
|
|
];
|
|
}
|