Re: [Qemu-devel] [PATCH v3 00/16] net: hub-based networking

[Anthony Liguori <anthony@codemonkey.ws>]

On 05/29/2012 04:14 PM, Markus Armbruster wrote:
> Luiz Capitulino<lcapitulino@redhat.com>  writes:
>
>> On Mon, 28 May 2012 12:17:04 +0100
>> Stefan Hajnoczi<stefanha@linux.vnet.ibm.com>  wrote:
>>
>>> What we need to decide is whether it's okay to drop QEMU "VLANs"
>>> completely and change dump command-line syntax?
>>
>> I'd vote for dropping it.
>>
>>> I think vlan-hub doesn't hurt anyone because the code has been isolated
>>> and we keep backwards compatibility.  So I'd personally still go the
>>> vlan-hub route for QEMU 1.x.
>>
>> Just to make it clear: I'm not against this series. I'm against having
>> the functionality in qemu. If we want to keep the functionality, then I
>> completely agree that this series is the way to go.
>
> I agree with Luiz: if we want to reimplement that much of networking
> within QEMU, this series does it in a much better way than VLANs, but
> I'd rather not do it at all.
>
> Just advice, not a strong objection.

Doesn't the same logic apply to reimplementing file systems?  Shouldn't we drop 
qcow3 in favor of using btrfs?

It's easy to make the NIH argument when it's a feature you don't care about.

A lot of people use vlans.  It's the only way -net socket is useful too.  Just 
because most KVM/libvirt users don't doesn't mean they aren't an important 
feature to preserve.

I would strongly nack any attempt to remove vlans w/o providing some mechanism 
for backwards compatibility which is exactly what this patch series does.

Regards,

Anthony Liguori

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