# Pastebin CykDBtZM
What the heck...
root@devstackpy27:~/.../octavia/devstack# python
Python 2.7.12 (default, Nov 19 2016, 06:48:10)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> with open('/sys/bus/pci/rescan') as rescan_file:
...     rescan_file.write('1')
...
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IOError: [Errno 13] Permission denied: '/sys/bus/pci/rescan'
>>> quit()
root@devstackpy27:~/.../octavia/devstack# echo 1 > /sys/bus/pci/rescan
root@devstackpy27:~/.../octavia/devstack#