[Openstack][nova] server groups

Ignazio Cassano ignaziocassano at gmail.com
Wed Apr 6 16:14:56 UTC 2022

We solved our issue: the spec field in request_specs table was wrong. Non
live migration works fine

Il Mer 6 Apr 2022, 09:05 Ignazio Cassano <ignaziocassano at gmail.com> ha

> We've 2 cases, those VMs are in the same group, one fails when migration
> is launched, the other working well, you can see output of nova live
> migration and spec on DB
> not working:
> https://paste.openstack.org/show/b4QfkVHkUpIC97E3aWAx/
> working:
> https://paste.openstack.org/show/busPt39bkfUzQthk1Tcf/
> Ignazio
> Il Mer 6 Apr 2022, 06:53 Laurent Dumont <laurentfdumont at gmail.com> ha
> scritto:
>> I cannot easily reproduce, but what does Nova complain about with the
>> live migration? Any chance you can run it with DEBUG?
>> On Wed, Apr 6, 2022 at 12:34 AM Ignazio Cassano <ignaziocassano at gmail.com>
>> wrote:
>>> Thanks Laurent. Sometimes the trick works and instances can migrate. We
>>> do not understand what is wrong when instances fail to migrate.
>>> We are usung soft-anti-affinity policy.
>>> The spec field we inserted in both cases seeems the same.
>>> Ignazio.
>>> Il Mer 6 Apr 2022, 01:03 Laurent Dumont <laurentfdumont at gmail.com> ha
>>> scritto:
>>>> I'm trying to find where else this was discussed, but afaik, this was
>>>> never supported.
>>>> I am not sure if someone was able to "hack" it's way to a working
>>>> setup. It's a bit of a shame because it makes server-groups really not
>>>> flexible :(
>>>> On Tue, Apr 5, 2022 at 3:04 PM Ignazio Cassano <
>>>> ignaziocassano at gmail.com> wrote:
>>>>> Hello, we noted that instances can be inserted in server groups only
>>>>> at instance creation step but we need to insert in a server group some old
>>>>> instances.
>>>>> We tried to modify database nova_api server group tables but we noted
>>>>> that we must modify spec in  request_specs table . For us is not clear how
>>>>> to modify the spec value.
>>>>> We tried to investigate looking at instances inserted in a server
>>>>> group at creation step and we got issues in instance live migration.
>>>>> Please, anyone could provide any utility to do it or any template ?
>>>>> Thanks
>>>>> Ignazio
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-discuss/attachments/20220406/7dfa08a3/attachment.htm>

More information about the openstack-discuss mailing list