Compute build error

2013-02-08 11:42:09 ERROR nova.compute.manager [req-2aa04352-6e7f-4c54-abcd-4586ce522266 65fdf1a86cfa4e50aafb6c132106e00f cec6647113c74b66b308de14032e591a] [instance: 563385d7-0654-45f0-8c81-8aaa3acdcd65] Build error: ['Traceback (most recent call last):\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 494, in _run_instance\n    injected_files, admin_password)\n', '  File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 747, in _spawn\n    block_device_info)\n', '  File "/usr/lib/python2.6/site-packages/nova/exception.py", line 117, in wrapped\n    temp_level, payload)\n', '  File "/usr/lib64/python2.6/contextlib.py", line 23, in __exit__\n    self.gen.next()\n', '  File "/usr/lib/python2.6/site-packages/nova/exception.py", line 92, in wrapped\n    return f(*args, **kw)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 1092, in spawn\n    block_device_info)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 1929, in _create_domain_and_network\n    self.firewall_driver.setup_basic_filtering(instance, network_info)\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/firewall.py", line 215, in setup_basic_filtering\n    self.refresh_provider_fw_rules()\n', '  File "/usr/lib/python2.6/site-packages/nova/virt/firewall.py", line 453, in refresh_provider_fw_rules\n    self._do_refresh_provider_fw_rules()\n', '  File "/usr/lib/python2.6/site-packages/nova/utils.py", line 739, in inner\n    ensure_tree(local_lock_path)\n', '  File "/usr/lib/python2.6/site-packages/nova/utils.py", line 1324, in ensure_tree\n    os.makedirs(path)\n', '  File "/usr/lib64/python2.6/os.py", line 150, in makedirs\n    makedirs(head, mode)\n', '  File "/usr/lib64/python2.6/os.py", line 150, in makedirs\n    makedirs(head, mode)\n', '  File "/usr/lib64/python2.6/os.py", line 157, in makedirs\n    mkdir(name, mode)\n', "OSError: [Errno 13] Permission denied: '/run'\n"]