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zfs: fix test and add documentation

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dylan madisetti 2024-08-26 13:03:25 -04:00
parent cc2e247193
commit ea3ce722ea
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3 changed files with 28 additions and 12 deletions
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1
example/zfs-with-vdevs.nix
View file

@ -80,6 +80,7 @@
type = "zpool";
mode = {
topology = {
type = "topology";
vdev = [
{
mode = "mirror";

1
lib/types/zfs.nix
View file

@ -53,3 +53,4 @@
};
};
}

38
lib/types/zpool.nix
View file

@ -1,9 +1,11 @@
{ config, options, lib, diskoLib, rootMountPoint, ... }:
let
# TODO: Consider expanding to handle `disk` `file` and `draid` mode options.
modeOptions = [
""
"mirror"
"raidz"
"raidz1"
"raidz2"
"raidz3"
];
@ -32,7 +34,7 @@ in
mode = lib.mkOption {
type = lib.types.enum modeOptions;
default = "";
description = "mode of the zfs vdev";
description = "Mode of the zfs vdev";
};
members = lib.mkOption {
type = lib.types.listOf lib.types.str;
@ -51,27 +53,39 @@ in
internal = true;
description = "Type";
};
# zfs disk types
# zfs device types
vdev = lib.mkOption {
type = lib.types.listOf vdev;
default = [ ];
description = "A list of storage vdevs";
description = ''
A list of storage vdevs. See
https://openzfs.github.io/openzfs-docs/man/master/7/zpoolconcepts.7.html#Virtual_Devices_(vdevs)
for details.
'';
example = [{
mode = "mirror";
members = [ "x" "y" ];
members = [ "x" "y" "/dev/sda1" ];
}];
};
special = lib.mkOption {
type = lib.types.nullOr vdev;
default = null;
description = "A list of devices for the special vdev";
description = ''
A vdev definition for a special device. See
https://openzfs.github.io/openzfs-docs/man/master/7/zpoolconcepts.7.html#special
for details.
'';
};
cache = lib.mkOption {
type = lib.types.nullOr lib.types.str;
type = lib.types.listOf lib.types.str;
default = null;
description = "The cache device";
description = ''
A dedicated zfs cache device (L2ARC). See
https://openzfs.github.io/openzfs-docs/man/master/7/zpoolconcepts.7.html#Cache_Devices
for details.
'';
};
# TODO: Consider
# TODO: Consider supporting log, spare, and dedup options.
};
});
};
@ -125,8 +139,8 @@ in
}")
'');
formatVdev = (vdev: formatOutput vdev.mode vdev.members);
hasTopology = builtins.isString config.mode;
mode = if hasTopology then config.mode else "prescribed";
hasTopology = !(builtins.isString config.mode);
mode = if !hasTopology then config.mode else "prescribed";
topology = if hasTopology then config.mode.topology else { };
in
''
@ -164,8 +178,8 @@ in
(lib.concatMapStrings formatVdev topology.vdev)}
${lib.optionalString (hasTopology && topology.special != null)
(formatOutput "special ${topology.special.mode}" topology.special.members)}
${lib.optionalString (hasTopology && topology.cache != null)
(formatOutput "cache" [topology.cache])}
${lib.optionalString (hasTopology && topology.cache != [])
(formatOutput "cache" topology.cache)}
all_devices=()
for line in "''${entries[@]}"; do
# lineformat is mode=device1 device2 device3