1:13 a.m.
Hi everyone,
I would like be able to configure virtio-scsi options num_queues, max_sectors,
and cmd_per_lun via libvirt. Are there any plans to have this support?
--
Mike Perez
10:08 a.m.
On Tue, May 06, 2014 at 04:13:50PM -0700, Mike Perez wrote:
I would like be able to configure virtio-scsi options num_queues,
max_sectors,
and cmd_per_lun via libvirt. Are there any plans to have this support?
Hi Mike,
I'm not sure about the status of libvirt support for virtio-scsi options
but in the meantime you can use <qemu:commandline> passthrough:
http://blog.vmsplice.net/2011/04/how-to-pass-qemu-command-line-options.html
Stefan
9:24 a.m.
On 10:08 Wed 07 May , Stefan Hajnoczi wrote:
On Tue, May 06, 2014 at 04:13:50PM -0700, Mike Perez wrote:
> I would like be able to configure virtio-scsi options num_queues, max_sectors,
> and cmd_per_lun via libvirt. Are there any plans to have this support?
Hi Mike,
I'm not sure about the status of libvirt support for virtio-scsi options
but in the meantime you can use <qemu:commandline> passthrough:
http://blog.vmsplice.net/2011/04/how-to-pass-qemu-command-line-options.html
Stefan
Thanks Stefan,
My plan is to write the support in OpenStack, which unfortunately does not
accept patches doing qemu passthrough:
http://lists.openstack.org/pipermail/openstack-dev/2013-November/018551.html
--
Mike Perez
10:44 a.m.
Il 08/05/2014 09:24, Mike Perez ha scritto:
On 10:08 Wed 07 May , Stefan Hajnoczi wrote:
> On Tue, May 06, 2014 at 04:13:50PM -0700, Mike Perez wrote:
>> I would like be able to configure virtio-scsi options num_queues, max_sectors,
>> and cmd_per_lun via libvirt. Are there any plans to have this support?
>
> Hi Mike,
> I'm not sure about the status of libvirt support for virtio-scsi options
> but in the meantime you can use <qemu:commandline> passthrough:
>
> http://blog.vmsplice.net/2011/04/how-to-pass-qemu-command-line-options.html
>
> Stefan
Thanks Stefan,
My plan is to write the support in OpenStack, which unfortunately does not
accept patches doing qemu passthrough:
http://lists.openstack.org/pipermail/openstack-dev/2013-November/018551.html
Why do you need such fine-grained control? The higher you go in the
stack, the simpler configuration should be in my opinion.
For openstack, I think all you need is a singlequeue vs. multiqueue knob
(setting num_queues = # VCPUs for multiqueue).
Paolo
10:24 a.m.
On 05/07/2014 01:13 AM, Mike Perez wrote:
Hi everyone,
I would like be able to configure virtio-scsi options num_queues, max_sectors,
and cmd_per_lun via libvirt. Are there any plans to have this support?
num_queues is supported for virtio-scsi controllers since libvirt 1.0.5:
<controller type='scsi' index='0' model='virtio-scsi'>
<driver queues='8'/>
</controller>
http://libvirt.org/git/?p=libvirt.git;a=commit;h=d4bf0a9
Jan
11:05 a.m.
On Wed, May 07, 2014 at 10:24:54AM +0200, Ján Tomko wrote:
On 05/07/2014 01:13 AM, Mike Perez wrote:
> Hi everyone,
>
> I would like be able to configure virtio-scsi options num_queues, max_sectors,
> and cmd_per_lun via libvirt. Are there any plans to have this support?
>
num_queues is supported for virtio-scsi controllers since libvirt 1.0.5:
If anyone wants to contribute patches for the other two properties I
would not be a very difficult/large coding job to undertake. I'm not
aware of anyone else who is currently working on it, so anyone please
jump right in...
Regards,
Daniel
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3787
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5 comments
5 participants
participants (5)
-
Daniel P. Berrange -
Ján Tomko -
Mike Perez -
Paolo Bonzini -
Stefan Hajnoczi