102 lines
2.7 KiB
Nix
102 lines
2.7 KiB
Nix
{ lib, ... }:
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{
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# needed for zfs pool
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networking.hostId = "1f8b8073";
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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 = "/dev/disk/by-id/ata-Samsung_SSD_850_EVO_500GB_S2RBNX0J351943M";
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content = {
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type = "gpt";
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partitions = {
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ESP = {
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size = "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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};
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};
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encryptedSwap = {
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size = "8G";
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content = {
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type = "swap";
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randomEncryption = true;
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};
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};
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zfs = {
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size = "100%";
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content = {
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type = "zfs";
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pool = "zroot";
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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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zpool = {
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zroot = {
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type = "zpool";
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rootFsOptions = {
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compression = "zstd";
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"com.sun:auto-snapshot" = "false";
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"acltype" = "posixacl"; # NOTE: needed for systemd https://github.com/NixOS/nixpkgs/issues/16954
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};
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mountpoint = null;
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datasets = {
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encrypted = {
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type = "zfs_fs";
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options = {
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mountpoint = "none";
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encryption = "aes-256-gcm";
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keyformat = "passphrase";
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};
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# use this to read the key during boot
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postCreateHook = ''
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zfs set keylocation="prompt" "zroot/$name";
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'';
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};
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"encrypted/root" = {
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type = "zfs_fs";
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options.mountpoint = "legacy";
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mountpoint = "/";
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postCreateHook = "zfs snapshot zroot/encrypted/root@blank";
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};
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"encrypted/nix" = {
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type = "zfs_fs";
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options.mountpoint = "legacy";
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mountpoint = "/nix";
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};
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"encrypted/persist" = {
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type = "zfs_fs";
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options.mountpoint = "legacy";
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mountpoint = "/persist";
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options."com.sun:auto-snapshot" = "true";
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};
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};
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};
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};
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};
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# rollback to blank
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boot.initrd.postDeviceCommands = lib.mkAfter ''
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zfs rollback -r zroot/encrypted/root@blank && echo "rollback complete"
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'';
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fileSystems."/persist".neededForBoot = true;
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# HACK: to fix issue of agenix running before impermanence
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age.identityPaths = [
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"/etc/ssh/ssh_host_ed25519_key"
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"/etc/ssh/ssh_host_rsa_key"
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"/persist/etc/ssh/ssh_host_ed25519_key"
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"/persist/etc/ssh/ssh_host_rsa_key"
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];
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services.zfs = {
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autoScrub.enable = true;
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trim.enable = true;
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autoSnapshot.enable = true;
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};
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}
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