Thanks Paolo for your clarification!
Just wanted to double confirm, does this mean batch I/O submission won't apply
to aio=threads (which is the default mode)?
Thanks,
Wei
On 4/26/19, 9:25 PM, "Paolo Bonzini" <pbonz...@redhat.com> wrote:
> Thanks Stefan and Paolo for your response and advice!
>
> Hi Paolo,
>
> As to the virtio-scsi batch I/O submission feature in QEMU which you
> mentioned, is this feature turned on by default in QEMU 2.9 or there is a
> tunable parameters to turn on/off the feature?
Yes, it is available by default since 2.2.0. It cannot be turned off,
however
it is only possible to batch I/O with aio=native (and, since 2.12.0, with
the NVMe
backend).
Paolo
