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Posted to users@cloudstack.apache.org by Sakari Poussa <sp...@gmail.com> on 2020/01/24 10:44:54 UTC
Extra parameters to KVM instances
Hi,
Is there a way to pass extra parameters to KVM VMs when they start? That
is, to the qemu.system-x86_64 command.
I am looking a way to expose SRIOV PCI device to the VM and I need to pass
extra parameters like this
qemu.system-x86_64 -device vfio-pci,host=3f:01.0 <normal-args>
Is this possible somehow?
--
Thanks, Sakari
Re: Extra parameters to KVM instances
Posted by Ivan Kudryavtsev <iv...@bw-sw.com>.
Yes, my PR will support your case if you implement assigning logic in
hooks. I do it specially to pass thru free GPUs, certain USB devices and
specific unmanaged VXLANS to VM.
PR can be found here. I tested it and hopefully, it will be added in 4.14,
but I will port it back for our org to 4.11.2/3.
https://github.com/apache/cloudstack/pull/3839
On Mon, Jan 27, 2020 at 1:52 PM Sakari Poussa <sp...@gmail.com> wrote:
> Hi Ivan,
>
> Thanks for the information. It was useful.
>
> Let me elaborate by use cases a bit more. I have PCI host devices with
> sriov capabilities. I may have 48 virtual functions (VF) on a host. I want
> to assign the VFs to some VM but not all. So I need some control which VMs
> gets the VF and others don't. Also, I need to keep track which VFs are
> already assigned and which are free. Lastly, I want to expose the VFs to
> containers running on VMs created by the upcoming Cloudstack Kubernetes
> Service (AKS, pull #3680).
>
> Looking at the first feature you mentioned, I don't think I can use that.
> It has no control on which VMs to add the extraconfig. It is all or
> nothing.
>
> The second feature, which you started to work on seems to have more
> potential. Do you see it can support my use case?
>
> Thanks, Sakari
>
>
>
> On Fri, Jan 24, 2020 at 6:08 PM Ivan Kudryavtsev <iv...@bw-sw.com> wrote:
>
> > Sakari, looks like you are looking for this one:
> > https://github.com/apache/cloudstack/pull/3510
> >
> > Also, Im working on implementation, which handles it another way:
> > https://github.com/apache/cloudstack/issues/3823
> >
> > пт, 24 янв. 2020 г., 17:45 Sakari Poussa <sp...@gmail.com>:
> >
> > > Hi,
> > >
> > > Is there a way to pass extra parameters to KVM VMs when they start?
> That
> > > is, to the qemu.system-x86_64 command.
> > >
> > > I am looking a way to expose SRIOV PCI device to the VM and I need to
> > pass
> > > extra parameters like this
> > >
> > > qemu.system-x86_64 -device vfio-pci,host=3f:01.0 <normal-args>
> > >
> > > Is this possible somehow?
> > >
> > > --
> > > Thanks, Sakari
> > >
> >
>
>
> --
> Sakari Poussa
> 040 348 2970
>
Re: Extra parameters to KVM instances
Posted by Sakari Poussa <sp...@gmail.com>.
Hi Ivan,
Thanks for the information. It was useful.
Let me elaborate by use cases a bit more. I have PCI host devices with
sriov capabilities. I may have 48 virtual functions (VF) on a host. I want
to assign the VFs to some VM but not all. So I need some control which VMs
gets the VF and others don't. Also, I need to keep track which VFs are
already assigned and which are free. Lastly, I want to expose the VFs to
containers running on VMs created by the upcoming Cloudstack Kubernetes
Service (AKS, pull #3680).
Looking at the first feature you mentioned, I don't think I can use that.
It has no control on which VMs to add the extraconfig. It is all or nothing.
The second feature, which you started to work on seems to have more
potential. Do you see it can support my use case?
Thanks, Sakari
On Fri, Jan 24, 2020 at 6:08 PM Ivan Kudryavtsev <iv...@bw-sw.com> wrote:
> Sakari, looks like you are looking for this one:
> https://github.com/apache/cloudstack/pull/3510
>
> Also, Im working on implementation, which handles it another way:
> https://github.com/apache/cloudstack/issues/3823
>
> пт, 24 янв. 2020 г., 17:45 Sakari Poussa <sp...@gmail.com>:
>
> > Hi,
> >
> > Is there a way to pass extra parameters to KVM VMs when they start? That
> > is, to the qemu.system-x86_64 command.
> >
> > I am looking a way to expose SRIOV PCI device to the VM and I need to
> pass
> > extra parameters like this
> >
> > qemu.system-x86_64 -device vfio-pci,host=3f:01.0 <normal-args>
> >
> > Is this possible somehow?
> >
> > --
> > Thanks, Sakari
> >
>
--
Sakari Poussa
040 348 2970
Re: Extra parameters to KVM instances
Posted by Ivan Kudryavtsev <iv...@bw-sw.com>.
Sakari, looks like you are looking for this one:
https://github.com/apache/cloudstack/pull/3510
Also, Im working on implementation, which handles it another way:
https://github.com/apache/cloudstack/issues/3823
пт, 24 янв. 2020 г., 17:45 Sakari Poussa <sp...@gmail.com>:
> Hi,
>
> Is there a way to pass extra parameters to KVM VMs when they start? That
> is, to the qemu.system-x86_64 command.
>
> I am looking a way to expose SRIOV PCI device to the VM and I need to pass
> extra parameters like this
>
> qemu.system-x86_64 -device vfio-pci,host=3f:01.0 <normal-args>
>
> Is this possible somehow?
>
> --
> Thanks, Sakari
>