Open Stack

On Sun, 3 Apr 2022 at 11:47, Radosław Piliszek
<radoslaw.piliszek at gmail.com> wrote:
>
> On Sat, 2 Apr 2022 at 16:00, Laurent Dumont <laurentfdumont at gmail.com> wrote:
> >
> > Hey folks,
>
> Hi Laurent,
>
> > I am trying to see if there are any ways to instruct Openstack to prevent the usage of local storage/ephemeral disks.
> >
> > There are cases where :
> >
> > I don't want the added complexity of Ceph.
> > I don't want the added hassle of using local volumes/nfs/shared storage on the computes directly.
> >
> > In an ideal world, creating a VM would mean that you always have a boot-from-volume with the volume being in your chosen backend.
> >
> > I've seen this spec : https://blueprints.launchpad.net/nova/+spec/flavor-root-disk-none
> >
> > But it doesn't seem to have survived the Ocata cycle.
> >
> > Any thoughts?
>
> You can set the root and ephemeral disk sizes to 0 which means the
> flavor is not usable without a volume.

Sorry, I somehow forgot to write the actual workaround.
There should be this sentence in here:
And then, make the nova's local disk store readonly / with a small quota.

> This way you are forced to use Cinder and what it offers.
>
> -yoctozepto