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| mnasiadka | Good afternoon | 11:27 |
|---|---|---|
| mnasiadka | Is there a way to show ARP table of an OVN managed router? | 11:27 |
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| numans | mnasiadka, Hi. | 12:40 |
| numans | mnasiadka, ARP table as in ? | 12:40 |
| mnasiadka | numans: I did have a weird issue, which looked like a stale ARP entry for one IP | 12:40 |
| numans | mnasiadka, whenever OVN learns mac it does'nt know, it stores in the SB DB MAC_Binding table. | 12:41 |
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| mnasiadka | ok, so I could check that table | 12:41 |
| numans | mnasiadka, ok. can you run - ovn-sbctl list mac_binding | grep "IP" | 12:41 |
| mnasiadka | Would removing an entry from there cause any mayhem? | 12:41 |
| numans | mnasiadka, and see if you find tht entry. You can try deleting manually as - ovn-sbctl destroy mac_binding <uuid> | 12:42 |
| numans | mnasiadka, no. | 12:42 |
| numans | mnasiadka, ovn would re learn if required. | 12:42 |
| numans | But its a known issue in OVN that it doesn't cleanup any stale entries in mac_binding table | 12:42 |
| mnasiadka | good to know :) | 12:43 |
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| kklimonda | hmm, I haven't yet looked into it, but are there any know bugs about how ovn handles "VIP" addresses, where two hosts are running VRRP and IP switches between them? | 13:28 |
| kklimonda | I seem to be able to reach VIP that is in the same network, but when I try to reach VIP from another network (via router) it "doesn't work". | 13:30 |
| kklimonda | I haven't yet had time to look into it, but perhaps there is some known limitation or bug | 13:30 |
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| imaximets | Hi. It sounds like a time for OVN meeting. | 17:17 |
| _lore_ | hi all | 17:18 |
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| blp | hi! | 17:18 |
| imaximets | blp, hi! | 17:18 |
| imaximets | We didn't start yet. | 17:18 |
| blp | Ah. When we do, I have a progress report. | 17:19 |
| imaximets | dceara and mmichelson are not here today. And I'm not sure if numans will join. | 17:20 |
| blp | Ah, perhaps we should just start then. | 17:20 |
| imaximets | zhouhan, are you around? | 17:21 |
| blp | #startmeeting ovn_community_development_discussion | 17:21 |
| imaximets | blp, I think so. | 17:21 |
| openstack | Meeting started Thu Sep 24 17:21:08 2020 UTC and is due to finish in 60 minutes. The chair is blp. Information about MeetBot at http://wiki.debian.org/MeetBot. | 17:21 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 17:21 |
| openstack | The meeting name has been set to 'ovn_community_development_discussion' | 17:21 |
| blp | I'll start with my progress report then. | 17:21 |
| imaximets | ack | 17:21 |
| blp | I am preparing to post the DDlog patches for OVN. | 17:21 |
| blp | They will add ddlog support without removing the existing northd implementation. | 17:21 |
| blp | It is valuable to have them in ovn because that makes it easier to maintain | 17:22 |
| blp | and easier to start doing performance benchmarks and tuning. | 17:22 |
| blp | and some deployments might find them useful. | 17:22 |
| blp | It's taking me some time to do it because I need to crossport ~200 patches that have been committed in the meantime. | 17:22 |
| blp | Most of them are trivial or require no work at all, but some are tricky and I'm spending most of the time on that. | 17:23 |
| blp | When I'm done, and tests pass, I'll start posting patches for review. | 17:23 |
| blp | That's my report. I can take questions or comments. | 17:23 |
| imaximets | Good news. Thanks! | 17:24 |
| blp | Who is next? Ilya? | 17:24 |
| imaximets | will make check test both implementations at once? | 17:24 |
| blp | Yes, tests are paired; if you don't build ddlog, then the ddlog versions are skipped. | 17:25 |
| imaximets | ok. | 17:25 |
| imaximets | I have one one small update | 17:26 |
| imaximets | *only one | 17:26 |
| imaximets | It's kind of OVN related. I'm trying to finish v2 of stream record/replay patch set and going to post it this week. | 17:27 |
| blp | I might not know about this. What kind of streams are being recorded? | 17:27 |
| imaximets | All streams. tcp, unix, ssl. | 17:28 |
| blp | Oh, for debugging purposes? | 17:28 |
| imaximets | Yep. The idea is to record incoming ovsdb operations and replay them locally to reproduce issues or test performance of production usecases. | 17:29 |
| blp | OK | 17:29 |
| imaximets | The same could be applicable to C version of northd. or ovn-controller in the future. | 17:29 |
| imaximets | will ddlog use C implementation of streams? or it will have some different implementation? | 17:30 |
| blp | It's using the C jsonrpc code. | 17:31 |
| blp | (which is built on C streams) | 17:31 |
| imaximets | ack. So it should be possible to use from ddlog version of northd too. | 17:31 |
| imaximets | Here is the link for v1, if you're interested | 17:32 |
| imaximets | #link https://patchwork.ozlabs.org/project/openvswitch/cover/20200630012435.205590-1-i.maximets@ovn.org/ | 17:32 |
| imaximets | for now it requires some tricks, i.e. disabling some randomness and also doesn't support clustered dbs, but these are points for future improvements. | 17:34 |
| imaximets | That's it from my side. | 17:34 |
| blp | OK! | 17:34 |
| blp | Is anyone else here? | 17:34 |
| imaximets | _lore_, are you still here? | 17:35 |
| _lore_ | yes | 17:35 |
| _lore_ | I have a very brief update, this week I worked mainly on a QoS regression introduced by I-P processing | 17:35 |
| _lore_ | posted v4 upstream | 17:35 |
| _lore_ | now I am working adding new option for lr-policy-add/delete | 17:36 |
| _lore_ | like --may-exist/--if-exist | 17:36 |
| _lore_ | I will post it today or tomorrow | 17:37 |
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| _lore_ | btw imaximets: any new about the raft patch I posted some time ago? | 17:38 |
| imaximets | _lore_, you mean extra information for cluster/show command? | 17:39 |
| _lore_ | imaximets: yes | 17:39 |
| blp | That's good... | 17:39 |
| blp | Anyone else today? | 17:39 |
| imaximets | _lore_, sorry, I didn't look at it closely yet. | 17:39 |
| imaximets | Maybe I could say a couple of words about what numans worked on. | 17:40 |
| _lore_ | https://patchwork.ozlabs.org/project/openvswitch/patch/95b2a271bc6f04b91bed76847b70359b4234eeef.1599127790.git.lorenzo.bianconi@redhat.com/ | 17:40 |
| _lore_ | imaximets: ok, no worries | 17:40 |
| imaximets | numans just posted a patch to avoid addition of invalid lflows for reject ACLs. | 17:41 |
| imaximets | northd adds 4 flows unconditionally for each reject ACL | 17:41 |
| imaximets | one for ip4, ip6, tcp and icmp | 17:41 |
| imaximets | and if 'match' already contains some protocol e.g. ip4, half of these flows will be invalid as they will match on ip4 and ip6 at the same time | 17:42 |
| imaximets | there are deployments where such flows takes significant part of SB db | 17:43 |
| imaximets | e.g. 300-400 MB of invalid flows of total 1GB SB db. | 17:43 |
| imaximets | Solution is that CMS could specify which protocols it targets, so northd will generate only relevant flows. | 17:44 |
| imaximets | #link https://patchwork.ozlabs.org/project/ovn/patch/20200924164955.2733564-1-numans@ovn.org/ | 17:44 |
| blp | Sounds like it solves a real problem. | 17:45 |
| zhouhan | imaximets: hi sorry I was in a conflict meeting | 17:45 |
| imaximets | And also numans accepted a pile of refactorig patches for northd, to split up big functions. | 17:46 |
| imaximets | That's all I know from his side. | 17:46 |
| imaximets | zhouhan, do you have any updates? | 17:47 |
| zhouhan | imaximets: not really much, but just code reviews. (I am done :) | 17:47 |
| imaximets | zhouhan, any ddlog related questions while blp is here? :) | 17:48 |
| zhouhan | imaximets: no questions. Sounds like a great progress. Thanks blp! | 17:51 |
| imaximets | It seems like we could end this meeting now. | 17:54 |
| blp | OK. | 17:55 |
| blp | #endmeeting | 17:55 |
| openstack | Meeting ended Thu Sep 24 17:55:02 2020 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 17:55 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/ovn_community_development_discussion/2020/ovn_community_development_discussion.2020-09-24-17.21.html | 17:55 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/ovn_community_development_discussion/2020/ovn_community_development_discussion.2020-09-24-17.21.txt | 17:55 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/ovn_community_development_discussion/2020/ovn_community_development_discussion.2020-09-24-17.21.log.html | 17:55 |
| imaximets | Thanks, everyone! Bye. | 17:55 |
| blp | bye! | 18:01 |
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