From 8b5fba494220b31726a90409db18dbd123224cb5 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Tue, 5 Oct 2010 15:44:40 +0000
Subject: [PATCH] * Added a module that provides common configuration for DomU 
  machines.

svn path=/nixos/trunk/; revision=24084
---
 modules/virtualisation/xen-dom0.nix |  2 +-
 modules/virtualisation/xen-domU.nix | 23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 modules/virtualisation/xen-domU.nix

diff --git a/modules/virtualisation/xen-dom0.nix b/modules/virtualisation/xen-dom0.nix
index c2973d3a6ab1..65158bc5f813 100644
--- a/modules/virtualisation/xen-dom0.nix
+++ b/modules/virtualisation/xen-dom0.nix
@@ -1,4 +1,4 @@
-# Xen hypervisor support.
+# Xen hypervisor (Dom0) support.
 
 { config, pkgs, ... }:
 
diff --git a/modules/virtualisation/xen-domU.nix b/modules/virtualisation/xen-domU.nix
new file mode 100644
index 000000000000..f4cbaf24c2b2
--- /dev/null
+++ b/modules/virtualisation/xen-domU.nix
@@ -0,0 +1,23 @@
+# Common configuration for Xen DomU NixOS virtual machines.
+
+{ config, pkgs, ... }:
+
+{
+  # We're being booted using pv-grub, which means that we need to
+  # generate a GRUB 1 menu without actually installing GRUB.
+  boot.loader.grub.version = 1;
+  boot.loader.grub.device = "nodev";
+  boot.loader.grub.extraPerEntryConfig = "root (hd0)";
+
+  boot.initrd.kernelModules = [ "xen-blkfront" ];
+
+  # Backgrounds don't work, so don't bother.
+  services.ttyBackgrounds.enable = false;
+
+  # Send syslog messages to the Xen console.
+  services.syslogd.tty = "hvc0";
+
+  # Start a mingetty on the Xen console (so that you can login using
+  # "xm console" in Dom0). 
+  services.mingetty.ttys = [ "hvc0" "tty1" "tty2" ];
+}