[openstack-dev] [Nova] Hypervisor Version Support

Russell Bryant rbryant at redhat.com
Wed Aug 7 14:36:04 UTC 2013

On 08/07/2013 10:14 AM, Andrew Laski wrote:
> On 08/07/13 at 07:38am, Kaushik Chandrashekar wrote:
>> Hi All,
>> We are working on adding hypervisors version support for xen,
>> https://blueprints.launchpad.net/nova/+spec/xen-support-for-hypervisor-versions
>> The initial design is,
>>   1. The image would have a property with hypervisor version
>> requirements,
>>   in this format '>=6.0,<6.2'
>>   2. The host state manager would have the hypervisor version loaded in
>>   (6,0,1) format.
>>   3. If the hypervisor versions are present in both of these, the
>>   image_props_filter would filter hypervisors based on them.
>> https://review.openstack.org/#/c/36073/15/nova/scheduler/filters/image_props_filter.py
>> We want to generalise this versioning for all hypervisors. So we are
>> thinking of having "a.b.c.d" or (a, b, c ,d) as the version type where a,
>> b, c, d are numbers. Do you see any hypervisors that have a different
>> versioning format?
> Why do you want to generalize the versioning for all hypervisors?  I'm
> not sure I see the benefit versus using the version as reported by the
> hypervisor.  Especially since you're looking to compare against non
> generalized versions based on your examples.

I guess to ensure you can do comparison operations (<, >, etc)?

Russell Bryant

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