<div dir="ltr"><div style="font-size:12.8px">I've been taking a look at the implementation and thinking about which cases update should be allowed.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">At a first glance, I would say that we should allow updates:</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><ul><li style="margin-left:15px">Add a new interface (neutron l2-gateway-update gw1 --device name=hwvtep,interface_names=et<wbr>h0,<b>eth1</b>) being eth1 the new interface.</li><li style="margin-left:15px">Delete interface (neutron l2-gateway-update gw1 --device name=hwvtep,interface_names=et<wbr>h0) removing eth1. In this case, we should check that the port has not any active connection.</li></ul><div>However, in both cases there is a big issue, which is the granularity of the segmentation-ids per port, right?? You cannot add or remove an l2gw connection per port, which bring us to a dead end.</div></div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Let's say I add eth1 to an existing l2gw. How can I get a vlan tag to that interface?? There is not l2gw-connection-update command... and trying to create the same one will fail. Even if you try to update the l2gw instance specifying the seg-id per port, it won't be active until a new connection is created.</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">Folks, based on your experience, what's your take on this??</div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px">IMHO, there is no easy way of solving this but with a big re-architecture.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 29, 2017 at 1:46 PM, Lajos Katona <span dir="ltr"><<a href="mailto:lajos.katona@ericsson.com" target="_blank">lajos.katona@ericsson.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
Hi Ricardo,<br>
<br>
That is the exception which gives us the trouble.<br>
<br>
If you have ideas as you mentioned in which case a gw should be
updated, and in what not, that would be really nice.<br>
Actually now we have a kind of development environment with devstack
and vtep emulator
(<a class="m_-8372035491687130758moz-txt-link-freetext" href="http://docs.openvswitch.org/en/latest/howto/vtep/" target="_blank">http://docs.openvswitch.org/<wbr>en/latest/howto/vtep/</a>) on the same
host, what do you think is that enough to go on with this problem?<br>
I am not so sure if with vtep emulator we can cover all the good and
bad (I mean when we mustn't do the update for example) scenarios.<br>
<br>
Regards<span class="HOEnZb"><font color="#888888"><br>
Lajos</font></span><div><div class="h5"><br>
<br>
<div class="m_-8372035491687130758moz-cite-prefix">On 2017-09-28 14:12, Ricardo Noriega De
Soto wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">I see the exception now Lajos:
<div><br>
</div>
<div>
<div>class L2GatewayInUse(exceptions.<wbr>InUse):</div>
<div> message = _("L2 Gateway '%(gateway_id)s' still has
active mappings "</div>
<div> "with one or more neutron networks.")</div>
</div>
<div><br>
</div>
<div>:-)</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Sep 27, 2017 at 6:40 PM,
Ricardo Noriega De Soto <span dir="ltr"><<a href="mailto:rnoriega@redhat.com" target="_blank">rnoriega@redhat.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Hey Lajos,
<div><br>
</div>
<div>Is this the exception you are encountering?</div>
<div><br>
</div>
<div>
<div>(neutron) l2-gateway-update --device
name=hwvtep,interface_names=et<wbr>h0,eth1 gw1</div>
<div>L2 Gateway 'b8ef7f98-e901-4ef5-b159-df533<wbr>64ca996'
still has active mappings with one or more neutron
networks.</div>
<div>Neutron server returns request_ids:
['req-f231dc53-cb7d-4221-ab74-<wbr>fa8715f85869']</div>
</div>
<div><br>
</div>
<div>I don't see the L2GatewayInUse exception you're
talking about, but I guess it's the same situation.</div>
<div><br>
</div>
<div>We should discuss in which case the l2gw instance
could be updated, and in which cases it shouldn't.</div>
<div><br>
</div>
<div>Please, let me know!</div>
<div><br>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra">
<div>
<div class="m_-8372035491687130758h5"><br>
<div class="gmail_quote">On Wed, Aug 16, 2017 at 11:14
AM, Lajos Katona <span dir="ltr"><<a href="mailto:lajos.katona@ericsson.com" target="_blank">lajos.katona@ericsson.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
We faced an issue with l2-gw-update, which means
that actually if there are connections for a gw
the update will throw an exception
(L2GatewayInUse), and the update is only possible
after deleting first the connections, do the
update and add the connections back.<br>
<br>
It is not exactly clear why this restriction is
there in the code (at least I can't find it in
docs or comments in the code, or review).<br>
As I see the check for network connections was
introduced in this patch:<br>
<a href="https://review.openstack.org/#/c/144097" rel="noreferrer" target="_blank">https://review.openstack.org/#<wbr>/c/144097</a>
(<a href="https://review.openstack.org/#/c/144097/21..22/networking_l2gw/db/l2gateway/l2gateway_db.py" rel="noreferrer" target="_blank">https://review.openstack.org/<wbr>#/c/144097/21..22/networking_l<wbr>2gw/db/l2gateway/l2gateway_db.<wbr>py</a>)<br>
<br>
Could you please give me a little background why
the update operation is not allowed on an l2gw
with network connections?<br>
<br>
Thanks in advance for the help.<br>
<br>
Regards<br>
Lajos<br>
<br>
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<span>-- <br>
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<div dir="ltr">
<div>
<div dir="ltr">Ricardo Noriega<br>
<div><br>
</div>
<div>Senior <span style="font-size:12.8px">Software
Engineer - NFV Partner Engineer | Office of
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<div dir="ltr">Ricardo Noriega<br>
<div><br>
</div>
<div>Senior <span style="font-size:12.8px">Software
Engineer - NFV Partner Engineer | Office of
Technology | Red Hat</span><br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr">Ricardo Noriega<br><div><br></div><div>Senior <span style="font-size:12.8px">Software Engineer - NFV Partner Engineer | Office of Technology | Red Hat</span><br></div><div><span style="font-size:12.8px">irc: rnoriega @freenode</span></div><div><br></div></div></div></div></div>
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