From cac502e35b4f23da844f30a3955e7a387d21cb58 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Sun, 10 Jan 2010 19:14:42 +0000
Subject: [PATCH] * Okay, so we do need an "lvm" task to run vgscan/vgchange. 
 It's only   needed though for devices that were not already found and
 activated   in the initrd.

svn path=/nixos/trunk/; revision=19337
---
 modules/tasks/lvm.nix | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/modules/tasks/lvm.nix b/modules/tasks/lvm.nix
index 8b60cd4c0b9..38277976d6d 100644
--- a/modules/tasks/lvm.nix
+++ b/modules/tasks/lvm.nix
@@ -6,6 +6,25 @@
 
   config = {
 
+    jobs.lvm =
+      { startOn = "started udev or new-devices";
+
+        script =
+          ''
+            # Scan for block devices that might contain LVM physical volumes
+            # and volume groups.
+            ${pkgs.lvm2}/sbin/vgscan --mknodes
+
+            # Make all logical volumes on all volume groups available, i.e.,
+            # make them appear in /dev.
+            ${pkgs.lvm2}/sbin/vgchange --available y
+
+            initctl emit -n new-devices
+          '';
+
+        task = true;
+      };
+
     environment.systemPackages = [ pkgs.lvm2 ];
 
     services.udev.packages = [ pkgs.lvm2 ];