diff -r 8cc28137805d tools/python/xen/xend/server/DevController.py
--- a/tools/python/xen/xend/server/DevController.py	Thu Oct 09 11:00:51 2008 +0100
+++ b/tools/python/xen/xend/server/DevController.py	Thu Oct 09 16:00:08 2008 -0600
@@ -257,7 +257,7 @@ class DevController:
 
         if force:
             frontpath = self.frontendPath(dev)
-            backpath = self.readVm(devid, "backend")
+            backpath = xstransact.Read(frontpath, "backend")
             if backpath:
                 xstransact.Remove(backpath)
             xstransact.Remove(frontpath)