From 3ed8879fe4aa918a96349cc33841dac49a8c7ecc Mon Sep 17 00:00:00 2001
From: Johannes Rothe <mail@johannes-rothe.de>
Date: Wed, 19 Mar 2025 23:18:03 +0100
Subject: [PATCH] Add ZFS compatibility

---
 hosts/dalinar/default.nix | 29 ++++++++++++++++++++---------
 1 file changed, 20 insertions(+), 9 deletions(-)

diff --git a/hosts/dalinar/default.nix b/hosts/dalinar/default.nix
index cc12922..c44c64f 100644
--- a/hosts/dalinar/default.nix
+++ b/hosts/dalinar/default.nix
@@ -24,20 +24,30 @@
       device = lib.mkForce "/dev/disk/by-uuid/26973b85-9c65-488b-93fb-8992ea0f8d50";
       crypttabExtraOpts = [ "tpm2-device=auto" ];
     };
+  # Required for ZFS, see https://openzfs.github.io/openzfs-docs/Getting%20Started/NixOS/index.html
+    supportedFilesystems = [ "zfs" ];
+    zfs.forceImportRoot = false;
   };
 
-  networking.hostName = "dalinar";
-  networking.nftables.enable = true;
-  networking.firewall = {
-    enable = true;
-    allowedUDPPorts = [ 53 ];
-    allowedTCPPorts = [
-      config.services.grafana.settings.server.http_port
-    ];
+  networking = {
+    hostName = "dalinar";
+    nftables.enable = true;
+    firewall = {
+      enable = true;
+      allowedUDPPorts = [ 53 ];
+      allowedTCPPorts = [
+        config.services.grafana.settings.server.http_port
+      ];
+    };
+    # head -c4 /dev/urandom | od -A none -t x4
+    # Required for ZFS, see https://openzfs.github.io/openzfs-docs/Getting%20Started/NixOS/index.html
+    hostId = "0c2ce418";
+    useNetworkd = true;
   };
-  networking.useNetworkd = true;
+
   services.resolved = {
     enable = true;
+    # Unbound is running
     extraConfig = ''
       DNSStubListener=no
     '';
@@ -61,6 +71,7 @@
     tmux
     vim
     wget
+    zfs
   ];
 
   powerManagement.powertop.enable = true;