[Openstack] is there a way to set the number of queues with the virtio-scsi driver ?

Chris Friesen chris.friesen at windriver.com
Tue Feb 13 19:24:07 UTC 2018

On 02/13/2018 09:32 AM, Vincent Godin wrote:
> When creating a image, in metadata "libvirt Driver Options", it's just
> possible set the "hw_scsi_model" to "virtio-scsi" but there is no way
> to set the number of queues. As this is a big factor of io
> improvement, why this option is still not available in openstack ?
> Does someone made a patch for this ?

As far as I know this is not currently supported.

There was an old spec proposal to add more virtio-scsi tunables at 
https://review.openstack.org/#/c/103797/ but it seems it was abandoned due to 
objections.  I didn't see anything newer.


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