Support configuration of multiple pci_alias options

[Lorenzo Cavassa]

Hi,

I need to setup multiple pci_alias entries to manage the PCI passthrough for several different PCI devices.

Looks like Nova doesn't support multiple pci_alias definitions using an array:

https://bugs.launchpad.net/nova/+bug/1513513

The workaround is to create multiple pci_alias in the nova.conf file but the NCC charm doesn't support this way to configure it.

[James Page (james-page)]

OK so this is not a quick fix (and its release day tomorrow so I don't want to land a largish change into nova-cc right now); my recommendation for right now is that you fork the charm and update the template as needed to define the required alias keys; once we have a thought through solution via configuation, we'll land in master, backport to stable 17.11 and you'll them be able to switch back to the mainline stable charm.

[Dean Henrichsmeyer (dean)]

This is not a field critical bug. Lorenzo, please re-evaluate the criteria and prioritize accordingly.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/535350

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/535350
Committed: https://git.openstack.org/cgit/openstack/charm-nova-cloud-controller/commit/?id=630a07013f5d1402df7b2c70870c463398fe9450
Submitter: Zuul
Branch: master

commit 630a07013f5d1402df7b2c70870c463398fe9450
Author: Liam Young <email address hidden>
Date: Mon Dec 11 13:56:03 2017 +0000

    Accept lists in pci-alias charm config

    Allow json lists to be passed in via the pci-alias charm config
    option so that multiple aliases can be set.

    Increase amulet timeout due to gate failures

    Change-Id: I3b5ea70224536f8d40f9c04482fa676c2b230bdd
    Partial-Bug: #1735205