nixos/modules/boot/fileSystems.nix
2023-07-09 12:50:30 +08:00

79 lines
2.3 KiB
Nix

inputs:
{
options.nixos.fileSystems = let inherit (inputs.lib) mkOption types; in
{
mount =
{
# device = mountPoint;
vfat = mkOption { type = types.attrsOf types.str; };
# device.subvol = mountPoint;
btrfs = mkOption { type = types.attrsOf (types.attrsOf types.str); };
};
# luks needed to be unlocked
# luks = mkOption { type = types.attrsOf types.submodule { options =
# { device = types.nonEmptyStr; ssd = types.bool; }; }; };
# swap and resume
# swap != resume.device if swap is a file
# swap = mkOption { type = types.nullOr types.str; };
# resume =
# {
# device = mkOption { type = types.nullOr types.str; };
# # sudo btrfs fi mkswapfile --size 64g --uuid clear swap
# # sudo btrfs inspect-internal map-swapfile -r swap
# offset = mkOption { type = types.nullOr types.ints.unsigned; };
# };
};
config =
{
fileSystems =
(
builtins.listToAttrs (builtins.map
(device: { name = device.value; value = { device = device.name; fsType = "vfat"; }; })
(inputs.localLib.attrsToList inputs.config.nixos.fileSystems.mount.vfat))
)
// (
builtins.listToAttrs (builtins.concatLists (builtins.map
(
device: builtins.map
(
subvol:
{
name = subvol.value;
value =
{
device = device.name;
fsType = "btrfs";
options = [ "compress-force=zstd:8" "subvol=${subvol.name}" ];
};
}
)
(inputs.localLib.attrsToList device.value)
)
(inputs.localLib.attrsToList inputs.config.nixos.fileSystems.mount.btrfs)))
);
# boot.initrd.luks.devices =
# (
# let
# f = name: attrs:
# (
# { inherit (attrs) device; crypttabExtraOpts = [ "fido2-device=auto" ]; }
# // ( if attrs.ssd then { allowDiscards = true; bypassWorkqueues = true; } else {} )
# );
# in
# builtins.mapAttrs f inputs.options.fileSystems.luks
# );
};
}
# Disable CoW for VM image and database:
# sudo chattr +C images
# zstd:15 cause sound stuttering
# From btrfs wiki: 1-3 are real-time, 4-8 slower with improved compression,
# 9-15 try even harder though the resulting size may not be significantly improved.
# https://btrfs.readthedocs.io/en/latest/Compression.html
# sudo btrfs filesystem resize -50G /nix
# sudo cryptsetup status root
# sudo cryptsetup -b 3787456512 resize root
# sudo cfdisk /dev/nvme1n1p3