97 lines
3.0 KiB
Nix
97 lines
3.0 KiB
Nix
# Nomarchy Golden Path Disk Configuration
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#
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# BTRFS + LUKS2 encryption with subvolumes optimized for:
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# - Compression (zstd)
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# - SSD optimization (noatime)
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# - Impermanence support (root-blank snapshot)
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# - Separate subvolumes for home, nix store, logs
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#
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# Replace @TARGET_DRIVE@ with the target device (e.g., /dev/nvme0n1)
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{
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disko.devices = {
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disk = {
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main = {
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type = "disk";
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device = "@TARGET_DRIVE@";
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content = {
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type = "gpt";
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partitions = {
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# EFI System Partition
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ESP = {
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priority = 1;
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name = "ESP";
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start = "1M";
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end = "512M";
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type = "EF00";
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content = {
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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" ];
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};
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};
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# LUKS-encrypted root partition
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luks = {
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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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# Password will be provided via /tmp/secret.key
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settings = {
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allowDiscards = true; # Enable TRIM for SSDs
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passwordFile = "/tmp/secret.key";
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};
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content = {
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type = "btrfs";
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extraArgs = [ "-f" ]; # Force creation
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subvolumes = {
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# Root filesystem
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"@" = {
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mountpoint = "/";
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mountOptions = [ "compress=zstd" "noatime" ];
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};
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# Persistent storage (for impermanence)
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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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# User home directories
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"@home" = {
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mountpoint = "/home";
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mountOptions = [ "compress=zstd" "noatime" ];
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};
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# Nix store (separate for better deduplication)
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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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# System logs
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"@log" = {
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mountpoint = "/var/log";
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mountOptions = [ "compress=zstd" "noatime" ];
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};
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};
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# Create a read-only snapshot of root for impermanence rollback
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postCreateHook = ''
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MNTPOINT=$(mktemp -d)
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mount -t btrfs /dev/mapper/crypted $MNTPOINT
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btrfs subvolume snapshot -r $MNTPOINT/@ $MNTPOINT/root-blank
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umount $MNTPOINT
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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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