nixpkgs/nixos/modules/virtualisation/amazon-options.nix
Graham Christensen bd38b059ea NixOS/amazonImageZfs: init
Introduce an AWS EC2 AMI which supports aarch64 and x86_64 with a ZFS
root.

This uses `make-zfs-image` which implies two EBS volumes are needed
inside EC2, one for boot, one for root. It should not matter which
is identified `xvda` and which is `xvdb`, though I have always
uploaded `boot` as `xvda`.
2021-08-25 10:42:35 -04:00

74 lines
1.9 KiB
Nix

{ config, lib, pkgs, ... }:
let
inherit (lib) types;
in {
options = {
ec2 = {
zfs = {
enable = lib.mkOption {
default = false;
internal = true;
description = ''
Whether the EC2 instance uses a ZFS root.
'';
};
datasets = lib.mkOption {
description = ''
Datasets to create under the `tank` and `boot` zpools.
**NOTE:** This option is used only at image creation time, and
does not attempt to declaratively create or manage datasets
on an existing system.
'';
default = {};
type = types.attrsOf (types.submodule {
options = {
mount = lib.mkOption {
description = "Where to mount this dataset.";
type = types.nullOr types.string;
default = null;
};
properties = lib.mkOption {
description = "Properties to set on this dataset.";
type = types.attrsOf types.string;
default = {};
};
};
});
};
};
hvm = lib.mkOption {
default = lib.versionAtLeast config.system.stateVersion "17.03";
internal = true;
description = ''
Whether the EC2 instance is a HVM instance.
'';
};
efi = lib.mkOption {
default = pkgs.stdenv.hostPlatform.isAarch64;
internal = true;
description = ''
Whether the EC2 instance is using EFI.
'';
};
};
};
config = lib.mkIf config.ec2.zfs.enable {
networking.hostId = lib.mkDefault "00000000";
fileSystems = let
mountable = lib.filterAttrs (_: value: ((value.mount or null) != null)) config.ec2.zfs.datasets;
in lib.mapAttrs'
(dataset: opts: lib.nameValuePair opts.mount {
device = dataset;
fsType = "zfs";
})
mountable;
};
}