I believe the relevant code to extend is in the charmhelpers: https://github.com/juju/charm-helpers/blob/master/charmhelpers/contrib/openstack/context.py#L2600
in the PCINetDevices class there is already a function to get_device_from_pci_address() https://github.com/juju/charm-helpers/blob/master/charmhelpers/contrib/hardware/pci.py#L276
I believe the relevant code to extend is in the charmhelpers: /github. com/juju/ charm-helpers/ blob/master/ charmhelpers/ contrib/ openstack/ context. py#L2600
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in the PCINetDevices class there is already a function to get_device_ from_pci_ address( ) /github. com/juju/ charm-helpers/ blob/master/ charmhelpers/ contrib/ hardware/ pci.py# L276
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