From 02bd7351dd772ae90755818f1c0f15d60d293171 Mon Sep 17 00:00:00 2001
From: Michael Marineau <michael.marineau@coreos.com>
Date: Fri, 6 Jun 2014 16:11:42 -0700
Subject: [PATCH] fix(disk_util): don't run blkid on empty partitions

---
 build_library/disk_util | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/build_library/disk_util b/build_library/disk_util
index 4fc2024bf2..6616ef5dcc 100755
--- a/build_library/disk_util
+++ b/build_library/disk_util
@@ -230,6 +230,10 @@ def GetPartitionTableFromImage(options, config, partitions):
       part['image_compat'] = False
 
   for part in partitions.itervalues():
+    if part.get('type', 'blank') == 'blank':
+      continue
+    if not part.get('image_exists', False):
+      continue
     if not part.get('fs_type', None):
       continue
     with PartitionLoop(options, part) as loop_dev: