Re: memory ballooning and nova

[Raymond Durand <secalf@xxxxxxxxx>]

Thanks.

Is it possible to enable/disable which parameters are triggered by Nova on Libvirt? ie.
-device virtio-balloon
-pci-device isa-serial

Regards,

2015-02-25 11:30 GMT+01:00 Daniel P. Berrange <berrange@xxxxxxxxxx>:

On Wed, Feb 25, 2015 at 11:27:23AM +0100, Raymond Durand wrote:
> Is Libvirt memory ballooning managed by nova in OpenStack Juno?
>
> Is Libvirt memory ballooning independent from the  OpenStack "RAM
> allocation ratio"? and allow a VM to expand (page out) even though the
> overall RAM allocation ratio is already at his maximum?

OpenStack doesn't do anything with ballooning. You get the allocated
memory at boot and it never gets changed thereafter.

Regards,
Daniel
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