[CI] nested virtualization support in OpenStack CI

Guo, Ruijing ruijing.guo at intel.com
Mon Apr 8 22:50:14 UTC 2019

Thanks, Jeremy. Could you pls guide me how to create job based on nested KVM and customized OS?

-----Original Message-----
From: Jeremy Stanley [mailto:fungi at yuggoth.org] 
Sent: Monday, April 8, 2019 8:21 PM
To: openstack-discuss at lists.openstack.org
Subject: Re: [CI] nested virtualization support in OpenStack CI

On 2019-04-08 00:42:46 +0000 (+0000), Guo, Ruijing wrote:
> I like Sean's idea. Can we create jobs based on nested KVM & 
> customized OS? If CI is stable enough, we can move non-voting to 
> voting.

There's nothing stopping you (or anyone) from creating such a CI system to augment reporting on how specific workloads fair with certain nested virt implementations.

The OpenDev CI system on the other hand is made of a heterogenous mix of donations from a variety of service providers with various configurations, and even some of those which advertise via CPU flags that they offer nested virt acceleration don't provide a stable implementation of it. There are already projects opportunistically testing with nested virtualization support turned on in their jobs to varying degrees of success, so it would be good to find out what problems their recent experiences reveal. It's also very much the case that even if it's working for a job today, it can start crashing jobs randomly tomorrow when a kernel version changes on guests or on hosts or we add another service provider into the mix.
Jeremy Stanley

More information about the openstack-discuss mailing list