75 lines
2.3 KiB
Nix
75 lines
2.3 KiB
Nix
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{ modulesPath, config, lib, root-disk, persist-dir, ... }: {
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services = {
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fstrim.enable = true;
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btrfs.autoScrub = {
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enable = true;
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fileSystems = [ "/" "/nix" "/persist" ];
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};
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snapper = {
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# NOTE: According to `snapper-config(5)` the default timeline count for all timelines is 10
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# (see TIMELINE_LIMIT_HOURLY, ...DAILY, etc.)
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configs.persist = {
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TIMELINE_CREATE = true;
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TIMELINE_CLEANUP = true;
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SUBVOLUME = "${persist-dir}";
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};
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};
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};
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fileSystems."${persist-dir}".neededForBoot = true;
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disko.devices = {
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disk.${lib.removePrefix "/dev/" root-disk} = {
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type = "disk";
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device = "${root-disk}";
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content = {
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type = "gpt";
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partitions = {
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esp = let label = "NixOS-Boot";
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in {
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priority = 1;
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size = "512M";
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type = "EF00";
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content = {
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extraArgs = [ "-n ${label}" "-F 32" ];
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type = "filesystem";
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format = "vfat";
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mountpoint = "/boot";
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mountOptions = [ "umask=0077" "defaults" ];
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};
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};
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root = let label = "NixOS-Primary";
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in {
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size = "100%";
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content = {
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type = "luks";
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name = "crypted";
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settings = { allowDiscards = true; };
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content = {
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type = "btrfs";
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extraArgs = [ "-f" "--label ${label}" ];
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postCreateHook = ''
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MOUNT="$(mktemp -d)"
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mount "/dev/disk/by-label/${label}" "$MOUNT" -o subvol=/
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trap 'umount $MOUNT; rm -rf $MOUNT' EXIT
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btrfs subvolume snapshot -r "$MOUNT/root" "$MOUNT/root-base"
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'';
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subvolumes = {
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"/root" = { mountpoint = "/"; };
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"/nix" = {
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mountpoint = "/nix";
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mountOptions = [ "compress=zstd" "noatime" ];
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};
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"/persist" = {
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mountpoint = "/persist";
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mountOptions = [ "compress=zstd" "noatime" ];
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};
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};
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};
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};
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};
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};
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};
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};
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};
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}
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