Traditionally the directory /var/lib/xen is where pygrub spits out the boot files it extracts, so we made virt-install/virt-manager point to the same place. This dir should be created by the Xen makefiles during the make install process. Dan.
ok let me see by touching this dir may be that will help or is there a way i can create these dir's without rebuilding xen , now that i have stablized the Environment for Benchmarking. regards Satya