Re: [PATCH] rng: tighten up domain <controller> schema

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On 18/04/13 19:16, Laine Stump wrote:
On 04/18/2013 05:41 AM, Martin Kletzander wrote:
On 04/18/2013 11:05 AM, Osier Yang wrote:
On 18/04/13 17:00, Martin Kletzander wrote:
On 04/18/2013 10:54 AM, Osier Yang wrote:
On 18/04/13 16:42, Martin Kletzander wrote:
On 04/18/2013 06:36 AM, Laine Stump wrote:
The rng schema for <controller> had been non-specific about which
types of controllers allowed which models, and also allowed the
num_queues attribute (since that hasn't been released yet, should we
rename it to "numQueues"?)
Since there's still time (the commit with that is
v1.0.4-65-gd4bf0a9), I
think we should rename it ASAP since we are using camelCase for all the
attribute names.

Apart from that, the RNG with this patch is precise according to the
documentation, so ACK.  I'll try to send the numQueues patch to see
what
others think.
I guess you mean multiple queues support for virtio network?
Regardless of which style we will use finally, FYI,  "num_queues" is
used for disk.. Personally I'm fine with either, because we already
use both across.

Yes, I meant the virtio-scsi num_queues.  As we're trying not to use
underscores in XML, I hope we can still switch it.  I haven't found any
other num_queues anywhere in the code.  Could you point me to the commit
that uses that?  I'm sending the previously discussed patch in the
meantime.

Except the virtio-scsi num_queues, there is no other tag for multiple
queue yet, we will need a patch to support multiple queue for the network,
but it's not committed yet.

It's fine to convert it now, 1.0.5 is not released yet. But is it
deserved to
do, we already have many tags with underscore, which can't be changed
for back-compat.

I believe those attributes [1] were created by mistake, and kept only
because of backward compatibility.  I'm trying to be open-minded,
though, so I'm not forcing my patch in, but seeing it just as a
proposal.  Others may have different opinions and I'm willing to discuss
that.  My first feeling, though, was that we should try to keep the same
policy for as many of them as possible.  OTOH, I've mistaken the
underscore with a hyphen when I remembered what Daniel told me about
attributes [2].
I had recalled DV saying something about underscores in the names a long
time ago, and I recently asked about underscore vs. camelCase, and danpb
said the same thing. (Personally I don't have a preference one way or
the other, but if we really are trying to avoid them, now is our chance).

I'm fine with either keeping it or changing num_queues. For long
term consistence, I agreed with having a consistent naming style
is nice.


In the meantime, in other device types, we've tried to keep backend
details like this pushed into a <driver> subelement when possible, to
avoid polluting the main element (e.g. see the <driver> subelement of
<interface>). Is it worth putting this numQueues attribute in a <driver>
subelement too? Or am I just playing XML God?

Not sure if you mean the upcoming numQueues for interface. But for the
existing num_queues, it's for the virtio-scsi controller, putting it in <driver>
doesn't reflect the purpose.


(sorry for not bringing all this up when the patches were originally
posted - it's just become impossible for me to even open all the
messages on the list, much less read and understand them :-/)

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