On 05/09/2017 07:58 AM, Daniel P. Berrange wrote:

Opps, yes, mixed terminology. You're right - virsh is lacking this
feature. Feel free to send a patch to add a '--io' flag to the
attach-disk command if you want to try fixing this.

Following up: could you let me know if the patch I sent is acceptable.  If any other changes are needed, I want to get those in while I still have time to spend on this.

Thanks.