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|
{
flake.modules.nixos.base =
{
config,
lib,
pkgs,
...
}:
let
cfg = config.infra.zfs;
in
{
options.infra.zfs = {
pool = lib.mkOption {
type = lib.types.str;
description = "The name of the ZFS pool.";
};
reservation = lib.mkOption {
type = lib.types.strMatching "[0-9]+[KMGTP]?";
description = "The amount of space to reserve for the reservation dataset.";
default = "10G";
};
};
config = {
boot = {
kernelPackages = pkgs.linuxPackages_7_0;
zfs.forceImportRoot = false;
};
assertions =
let
expectedZfsVersion = "2.4.2";
in
[
{
assertion = pkgs.zfs.version == expectedZfsVersion;
message = ''
ZFS version is ${pkgs.zfs.version}, expected ${expectedZfsVersion}. Check the latest supported kernel
version at https://github.com/openzfs/zfs/releases and update `boot.kernelPackages`
in modules/zfs.nix if needed as well as this assertion.
'';
}
];
disko.devices.zpool."${cfg.pool}" = {
type = "zpool";
rootFsOptions = {
acltype = "posix";
atime = "off";
canmount = "off";
compression = "zstd-3";
dnodesize = "auto";
setuid = "off";
xattr = "sa";
normalization = "formD";
utf8only = "on";
};
datasets = {
reservation = {
type = "zfs_fs";
options = {
reservation = cfg.reservation;
mountpoint = "legacy";
};
};
"local/nix" = {
type = "zfs_fs";
mountpoint = "/nix";
options = {
canmount = "on";
mountpoint = "legacy";
};
mountOptions = [
"nosuid"
"nodev"
];
};
"local/root" = {
type = "zfs_fs";
mountpoint = "/";
options = {
canmount = "on";
mountpoint = "legacy";
};
postCreateHook = ''
zfs snapshot "${cfg.pool}/local/root@blank"
'';
mountOptions = [
"nosuid"
"nodev"
];
};
"persist" = {
type = "zfs_fs";
mountpoint = config.infra.persist.dir;
options = {
canmount = "on";
mountpoint = "legacy";
};
mountOptions = [
"nosuid"
"nodev"
];
};
};
};
};
};
}
|
