Re: [Qemu-devel] Lock contention in QEMU

[Weiwei Jia]

Got it. Thank you very much.

Best,
Weiwei Jia

On Mon, Dec 19, 2016 at 5:58 AM, Stefan Hajnoczi <address@hidden> wrote:
> On Fri, Dec 16, 2016 at 04:42:54PM -0500, Weiwei Jia wrote:
>> Has x-data-plane been used (or accepted) widely in systems. I have
>> this concern since if it hasn't been widely accepted, it may
>> have/cause some problems we don't know. Do you know some hidden
>> problems which may caused by QEMU x-data-plane feature in systems?
>
> By now virtio-blk dataplane has been tested a fair amount.  virtio-scsi
> dataplane is more recent.
>
> I'm not aware of known issues with virtio-blk dataplane in modern QEMU
> but you seem to be using an older QEMU.  Originally dataplane had a lot
> of limitations (no live migration, no image file formats, no block
> jobs) so be sure to check that your QEMU supports these things with
> dataplane if you need the features.
>
> Stefan