commit 3bcf91cbbd9a18db9ae7d594ffde7979774ed512
Author: Roger Pau Monne <roger.pau@xxxxxxxxxx>
Date:   Wed Feb 12 11:15:17 2014 +0100

    libxl: local attach support for PHY backends using scripts
    
    Allow disks using the PHY backend to locally attach if using a script.
    
    Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
    Suggested-by: Ian Campbell <ian.campbell@xxxxxxxxxx>


Index: xen-4.5.0-testing/tools/libxl/libxl.c
===================================================================
--- xen-4.5.0-testing.orig/tools/libxl/libxl.c
+++ xen-4.5.0-testing/tools/libxl/libxl.c
@@ -3006,6 +3006,16 @@ void libxl__device_disk_local_initiate_a
 
     switch (disk->backend) {
         case LIBXL_DISK_BACKEND_PHY:
+            if (disk->script != NULL) {
+                LOG(DEBUG, "trying to locally attach PHY device %s with script %s",
+                           disk->pdev_path, disk->script);
+                libxl__prepare_ao_device(ao, &dls->aodev);
+                dls->aodev.callback = local_device_attach_cb;
+                device_disk_add(egc, LIBXL_TOOLSTACK_DOMID, disk,
+                                &dls->aodev, libxl__alloc_vdev,
+                                (void *) blkdev_start);
+                return;
+            }
             LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "locally attaching PHY disk %s",
                        disk->pdev_path);
             dev = disk->pdev_path;
@@ -3085,7 +3095,7 @@ static void local_device_attach_cb(libxl
     }
 
     dev = GCSPRINTF("/dev/%s", disk->vdev);
-    LOG(DEBUG, "locally attaching qdisk %s", dev);
+    LOG(DEBUG, "locally attached disk %s", dev);
 
     rc = libxl__device_from_disk(gc, LIBXL_TOOLSTACK_DOMID, disk, &device);
     if (rc < 0)
@@ -3125,6 +3135,7 @@ void libxl__device_disk_local_initiate_d
     if (!dls->diskpath) goto out;
 
     switch (disk->backend) {
+        case LIBXL_DISK_BACKEND_PHY:
         case LIBXL_DISK_BACKEND_QDISK:
             if (disk->vdev != NULL) {
                 GCNEW(device);
@@ -3142,7 +3153,6 @@ void libxl__device_disk_local_initiate_d
             /* disk->vdev == NULL; fall through */
         default:
             /*
-             * Nothing to do for PHYSTYPE_PHY.
              * For other device types assume that the blktap2 process is
              * needed by the soon to be started domain and do nothing.
              */