* Activate software RAID arrays.

svn path=/nixos/trunk/; revision=7631

system/upstart.nix

@@ -31,6 +31,11 @@ import ../upstart-jobs/gather.nix {
       inherit (pkgs) kernel module_init_tools lvm2;
     })
       
+    # Activate software RAID arrays.
+    (import ../upstart-jobs/swraid.nix {
+      inherit (pkgs) kernel module_init_tools mdadm;
+    })
+      
     # Hardware scan; loads modules for PCI devices.
     (import ../upstart-jobs/hardware-scan.nix {
       inherit (pkgs) kernel module_init_tools;

upstart-jobs/swraid.nix

@@ -0,0 +1,36 @@
+{kernel, module_init_tools, mdadm}:
+
+let
+
+  tempConf = "/var/state/mdadm.conf";
+
+in
+  
+{
+  name = "swraid";
+  
+  job = "
+start on udev
+#start on new-devices
+
+script
+
+    # Load the necessary RAID personalities.
+    export MODULE_DIR=${kernel}/lib/modules/
+    for mod in raid0 raid1 raid5; do
+        ${module_init_tools}/sbin/modprobe $mod || true
+    done
+
+    # Scan /proc/partitions for RAID devices.
+    ${mdadm}/sbin/mdadm --examine --brief --scan -c partitions > ${tempConf}
+
+    # Activate each device found.
+    ${mdadm}/sbin/mdadm --assemble -c ${tempConf} --scan
+
+    initctl emit new-devices
+    
+end script
+
+  ";
+
+}