[Openstack] Migration of 2 VMs to the same Compute node

Adnan Smajlovic a.smajlovic at gmail.com
Mon Feb 16 15:55:38 UTC 2015

On 16 February 2015 at 14:22, Christian Berendt <christian at berendt.io>

> On 02/14/2015 06:54 PM, Daniel Spiekermann wrote:
> > is it possible to migrate 2 different VMs to the same compute node?
> Have you tried it with nova live-migration or only with nova migrate?
> With nova live-migration it is possible to specify the target host.
> usage: nova live-migration [--block-migrate] [--disk-over-commit]
>                            <server> [<host>]
> Migrate running server to a new machine.
> Positional arguments:
>   <server>            Name or ID of server.
>   <host>              destination host name.
> Christian.

Initially I thought that the server group affinity filter (available since
Icehouse) would be suitable for the use case you have outlined: -

However it seems that it is currently only honoured at boot and updated for
the upcoming Kilo release -
Until then live migration may indeed be your only way to achieve the
required affinity behaviour.


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