Friday, 2021-01-22

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slaweq#startmeeting neutron_drivers14:01
openstackMeeting started Fri Jan 22 14:01:22 2021 UTC and is due to finish in 60 minutes.  The chair is slaweq. Information about MeetBot at http://wiki.debian.org/MeetBot.14:01
openstackUseful Commands: #action #agreed #help #info #idea #link #topic #startvote.14:01
slaweqhi14:01
*** openstack changes topic to " (Meeting topic: neutron_drivers)"14:01
openstackThe meeting name has been set to 'neutron_drivers'14:01
mlavalleo/14:01
jkuliko/14:01
sebahi14:01
ralonsohhi14:01
slaweqlet's wait few more minutes for amotoki, njohnston, haleyb and yamamoto14:02
slaweqas we need to have quorum14:02
njohnstono/14:02
haleybhi, thanks for the ping14:02
slaweqhi :)14:02
obondarevhi14:03
slaweqok, I think we can start14:04
slaweq#topic RFEs14:04
*** openstack changes topic to "RFEs (Meeting topic: neutron_drivers)"14:04
slaweqwe have 1 rfe to discuss today14:04
slaweqhttps://bugs.launchpad.net/neutron/+bug/191112614:04
openstackLaunchpad bug 1911126 in neutron "[RFE][L3] add ability to control router SNAT more granularly" [Wishlist,New] - Assigned to LIU Yulong (dragon889)14:04
ralonsohis Liu here?14:05
slaweqI think he's not14:06
slaweqbut we can still discuss it now and left some questions comments in the rfe14:07
ralonsohok, I'll start then14:07
mlavallehe hasn't shown up lately for other of his RFEs14:07
ralonsohI agree with the RFE but not with the architecture14:07
ralonsoh--> https://bugs.launchpad.net/neutron/+bug/1911126/comments/414:08
openstackLaunchpad bug 1911126 in neutron "[RFE][L3] add ability to control router SNAT more granularly" [Wishlist,New] - Assigned to LIU Yulong (dragon889)14:08
ralonsohI think we should explore using TC to mark the traffic, depending on the range of IPs and use this mark with tc-tc to shape it14:08
ralonsohof course, I didn't have time to test it14:08
ralonsohI'm saying this because with this implementation we don't need to change the architecture but the qos extension only14:09
ralonsohand this will be more transparent14:09
mlavallewhat do you mean by changing the architecture?14:09
ralonsohusing FIPs to handle the qos shaping14:10
ralonsohaccording to the spec, there are groups of internal IPs mapped into FIPs14:10
ralonsohthat FIPs will be used by TC to filter the packets and shape them14:10
mlavalleyeah, that threw me off a bit also14:10
ralonsohbut, of course, I still need to prove that my idea works14:11
mlavallebut then in LP he clarifies that "FIP" was really just nomenclature14:11
ralonsohbut still we need to "reserve" this IP in the external network14:11
mlavalleyeah14:12
mlavalleof course14:12
ralonsohthis is something we currently don't consider14:12
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mlavalleso I say we agree on the RFE and debate the implementation in the spec?14:12
ralonsohexactly14:12
njohnston+114:13
ralonsoh+1 to the RFE (more discussion in the spec)14:13
mlavalleso I say let's go ahead and approve the RFE14:13
mlavalleand fight the concept to death in the spec14:13
slaweqthat's fast :)14:13
njohnstonlol14:13
haleyb+1 since i was also curious when address groups were mentioned14:13
haleybbut that's implementation14:14
slaweqyes, that is implementation thing14:14
slaweqI'm also ok to approve this rfe as the idea14:14
njohnstonit's definitely an intriguing idea.  It'll be interesting as we debate the spec to get their learned experience since they have implemented it already.14:14
mlavalleyes, in the spec debate we should keep in mind they already have experience with the implementation14:15
slaweqso, we already decided to approve that rfe and continue discussion about implementation in the spec review14:16
slaweqI will mark that rfe as approved after the meeting14:16
slaweqany other questions/comments about that rfe, or can we move on?14:17
mlavallelet's move on14:19
slaweqok14:19
slaweq#topic On Demand agenda14:19
*** openstack changes topic to "On Demand agenda (Meeting topic: neutron_drivers)"14:19
slaweqwe have one topic added by jkulik14:19
slaweqwelcome jkulik :)14:19
slaweqhttps://bugs.launchpad.net/neutron/+bug/179123314:19
openstackLaunchpad bug 1791233 in neutron "Redundant dynamic partial segments was allocated for the same network and physical_network" [Undecided,New]14:19
slaweqplease speak about what You wanted to discuss14:20
jkulikhi o/14:20
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jkulikwe think we found a bug and proposed to add a constraint to the DB to fix it14:20
jkulikit's a race condition and I can't explain it better here than already in https://bugs.launchpad.net/neutron/+bug/1791233/comments/314:21
openstackLaunchpad bug 1791233 in neutron "Redundant dynamic partial segments was allocated for the same network and physical_network" [Undecided,New]14:21
jkulikwe got some feedback already and in there, it was pointed out that we should propose that solution in the neutron drivers meeting14:21
jkulikwe would like to implement it, but only if you folks feel it's the right approach14:22
jkulikthis being a race-condition, it's hard to write a unit-test or something for it, I guess14:22
mlavalleIt seems to me the bug itself has been confirmed by another deployer. So I don't think that is in question14:23
ralonsohand the idea of "local_index"?14:23
ralonsohin c#214:23
ralonsoh(now I remember this bug)14:23
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ralonsohI tried using the constrain but does not work with more than one local network14:24
mlavalleI say let's go ahead and find a fix. If jkulik has a proposed solution, please send it to gerrit and we can discuss the implementation details there14:24
slaweqralonsoh: I just don't understand exactly what provider segments can local network have14:24
slaweqbut maybe I'm missing something simply14:24
ralonsohok, let's push a patch14:24
ralonsohthis is indeed a bug14:24
slaweqmlavalle++14:24
jkulikralonsoh, I tried to answer in c#3 to your c#214:25
mlavalleit is14:25
slaweqI agree, please send patch to review but as bug is already confirmed we need to fix it somehow, db constraint seems good approach IMO14:25
jkulikok. we'll try to do that. thank you14:25
slaweq thx jkulik :)14:26
sebayeah, thanks from me as well14:26
mlavalleI marked the bug as confirmed with mediem riority14:26
mlavallejkulik: will you send a patch14:26
mlavalle?14:26
jkulikseba will probably14:26
slaweqjkulik: but please keep in mind that any fix which will change db schema will not be possible to backport to stable branches14:26
mlavalleok seba please assign the bug to yourself14:26
sebaokay, will do14:27
ralonsoh^^ important: DB changes cannot be backported14:27
jkulikok.14:27
mlavallethanks jkulik and seba !14:27
jkulikthank you all14:28
slaweqthx jkulik and seba for help with that14:29
slaweqok, any other questions, topics to discuss today?14:29
slaweqif not, I will give You 30 minutes back :)14:29
mlavalleyaay!14:29
ralonsohthanks!14:29
slaweqok, thanks for attending the meeting14:29
ralonsohbye14:30
slaweqhave a great friday and weekend14:30
slaweqsee You!14:30
mlavalleo/14:30
slaweq#endmeeting14:30
*** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/"14:30
openstackMeeting ended Fri Jan 22 14:30:10 2021 UTC.  Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4)14:30
openstackMinutes:        http://eavesdrop.openstack.org/meetings/neutron_drivers/2021/neutron_drivers.2021-01-22-14.01.html14:30
openstackMinutes (text): http://eavesdrop.openstack.org/meetings/neutron_drivers/2021/neutron_drivers.2021-01-22-14.01.txt14:30
njohnstono/14:30
openstackLog:            http://eavesdrop.openstack.org/meetings/neutron_drivers/2021/neutron_drivers.2021-01-22-14.01.log.html14:30
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