On 03/24/2014 03:57 AM, Raphael Bauduin wrote:
>
>
>
> On Thu, Mar 20, 2014 at 9:13 AM, Raphael Bauduin <rblists@gmail.com

> <mailto:rblists@gmail.com>> wrote:
>
>     Hi,
>
>     Before switching to io mode=native, I wanted to check if there are any
>     disadvantages or potential problem with this setting.
>     I virtio-blk data plane required to use this setting effectively? (as
>     illustrated
>     here:http://blog.vmsplice.net/2013/03/new-in-qemu-14-high-performance-virtio.html)
>     Is there a requirement on the host kernel (eg minimum version)?
>
>
> Is this a stupid question or does no one use native io mode? Please let me know
>

dataplane is not required for io=native. io=native is used quite often in
practice, just when the VM is using a host block device as storage. That's
when virt-manager sets io=native at least, as recommended to use by the qemu devs.

- Cole