Open Stack

On 22/05, Sean Mooney wrote:
> On Mon, 2023-05-22 at 17:41 +0200, Gorka Eguileor wrote:
> > On 20/05, Work Ceph wrote:
> > > Hello guys,
> > > We have a situation where an image requires an IDE bus in KVM. Therefore,
> > > we configured it in OpenStack to have the IDE bus being used. However, when
> > > we add new volumes to this VM (server), all of them are being allocated as
> > > IDE volumes; therefore, we are limited to 4 volumes in total in the VM. Is
> > > it possible to mix different types of volumes in a VM in OpenStack? I know
> > > that in other platforms, such as when we use KVM directly, proxmox, Apache
> > > CloudStack, we can do such combinations, but we were not able to achieve it
> > > in OpenStack.
> > >
> > > Have you guys worked with similar use cases? I know that I can convert the
> > > image to use virtIO or iSCSI bus, and to do that I need to fix/patch the
> > > operating system inside the image. However, I would like to check if there
> > > is a method to use a root volume of a VM as IDE, and other volumes as
> > > virtio to avoid the limit of volumes that IDE has.
> >
> > Hi,
> >
> > I think I heard some Nova people talking about a new feature to support
> > different buses for different volumes. Unfortunately I don't remember if
> > it's something they were considering doing or something they were
> > already working on.
> it was something we were considering supporting in the future if someone volenterred to work on it.
> i was suggesting it shoudl be a preriqustit to supprot vdpa for cinder volumes in the futrue.
>

Thanks Sean!  That was precisely the conversation I had in my mind but
couldn't remember the details.  :-)