Files
disko/lib/types/mdadm.nix
T
2025-02-15 10:08:56 +00:00

128 lines
3.5 KiB
Nix

{
config,
options,
lib,
diskoLib,
...
}:
{
options = {
name = lib.mkOption {
type = lib.types.str;
default = config._module.args.name;
description = "Name";
};
type = lib.mkOption {
type = lib.types.enum [ "mdadm" ];
default = "mdadm";
internal = true;
description = "Type";
};
level = lib.mkOption {
type = lib.types.int;
default = 1;
description = "mdadm level";
};
metadata = lib.mkOption {
type = lib.types.enum [
"1"
"1.0"
"1.1"
"1.2"
"default"
"ddf"
"imsm"
];
default = "default";
description = "Metadata";
};
content = diskoLib.deviceType {
parent = config;
device = "/dev/md/${config.name}";
};
_meta = lib.mkOption {
internal = true;
readOnly = true;
type = diskoLib.jsonType;
default = lib.optionalAttrs (config.content != null) (
config.content._meta [
"mdadm"
config.name
]
);
description = "Metadata";
};
_create = diskoLib.mkCreateOption {
inherit config options;
default = ''
if ! test -e "/dev/md/${config.name}"; then
readarray -t disk_devices < <(cat "$disko_devices_dir"/raid_${lib.escapeShellArg config.name})
echo 'y' | mdadm --create "/dev/md/${config.name}" \
--level=${toString config.level} \
--raid-devices="$(wc -l "$disko_devices_dir"/raid_${lib.escapeShellArg config.name} | cut -f 1 -d " ")" \
--metadata=${config.metadata} \
--force \
--homehost=any \
"''${disk_devices[@]}"
partprobe "/dev/md/${config.name}"
udevadm trigger --subsystem-match=block
udevadm settle
# for some reason mdadm devices spawn with an existing partition table, so we need to wipe it
sgdisk --zap-all "/dev/md/${config.name}"
fi
${lib.optionalString (config.content != null) config.content._create}
'';
};
_mount = diskoLib.mkMountOption {
inherit config options;
default = lib.optionalAttrs (config.content != null) config.content._mount;
# TODO we probably need to assemble the mdadm somehow
};
_unmount = diskoLib.mkUnmountOption {
inherit config options;
default =
let
content = lib.optionalAttrs (config.content != null) config.content._unmount;
in
{
fs = content.fs;
dev = ''
${content.dev or ""}
if [ -e "/dev/md/${config.name}" ]; then
mdadm --stop "/dev/md/${config.name}"
fi
'';
};
};
_config = lib.mkOption {
internal = true;
readOnly = true;
default = [
(
if lib.versionAtLeast (lib.versions.majorMinor lib.version) "23.11" then
{
boot.swraid.enable = true;
}
else
{
boot.initrd.services.swraid.enable = true;
}
)
] ++ lib.optional (config.content != null) config.content._config;
description = "NixOS configuration";
};
_pkgs = lib.mkOption {
internal = true;
readOnly = true;
type = lib.types.functionTo (lib.types.listOf lib.types.package);
default =
pkgs:
[
pkgs.parted # for partprobe
]
++ (lib.optionals (config.content != null) (config.content._pkgs pkgs));
description = "Packages";
};
};
}