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| tosky | hi, anyone interested in the Sahara meeting?? | 14:01 |
|---|---|---|
| tosky | (with just one "?") | 14:01 |
| * tosky sees jeremyfreudberg | 14:02 | |
| tosky | oki, let's go | 14:03 |
| tosky | #startmeeting sahara | 14:03 |
| openstack | Meeting started Thu Oct 18 14:03:07 2018 UTC and is due to finish in 60 minutes. The chair is tosky. Information about MeetBot at http://wiki.debian.org/MeetBot. | 14:03 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 14:03 |
| *** openstack changes topic to " (Meeting topic: sahara)" | 14:03 | |
| openstack | The meeting name has been set to 'sahara' | 14:03 |
| jeremyfreudberg | o/ | 14:03 |
| tosky | Telles is on vacation, but still, good to check the status | 14:03 |
| jeremyfreudberg | indeed | 14:03 |
| tosky | #topic News/Updates | 14:04 |
| *** openstack changes topic to "News/Updates (Meeting topic: sahara)" | 14:04 | |
| tosky | I've been working on S3 testing (still, I know, but now there is more working code) | 14:04 |
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| jeremyfreudberg | i have not had any quality time to work on features recently (unlike last cycle, the features are a bit more complicated). very slowly making progress on health repair (which I have a small discussion point about) | 14:05 |
| tosky | apart from that, I've been following the status of the gates and discussed with -infra and -releases about few issues and changes | 14:05 |
| jeremyfreudberg | thanks tosky for holding down the fort, both on the openstack-wide stuff and also on those big patches like s3 testing, doc refactor, etc | 14:06 |
| tosky | in the doc refactor one, at some point I had too many windows open with code floating | 14:06 |
| tosky | but yeah :) | 14:06 |
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| tosky | last time I spoke with Telles, the unit tests for the split repositories were passing and he was going to start the real testing | 14:07 |
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| tosky | I'm writing an email about the planned impact on deployment tools and users | 14:08 |
| jeremyfreudberg | indeed, i've seen interesting stuff on telles's github | 14:08 |
| jeremyfreudberg | and yes, the email is a good idea | 14:09 |
| tosky | when we are done with the split, apart from the bugs that can come from it, we can go full steam with API v2 and Python 3 | 14:09 |
| tosky | which are the other big things | 14:09 |
| jeremyfreudberg | yup | 14:09 |
| tosky | I guess we are done with the news - any specific point to discuss? Until I'm out from the S3 pit, I don't have a lot more to add | 14:11 |
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| tosky | oh, health repair | 14:12 |
| tosky | let's go for it, jeremyfreudberg | 14:12 |
| jeremyfreudberg | yes, health repair | 14:12 |
| tosky | #topic Health repair | 14:12 |
| *** openstack changes topic to "Health repair (Meeting topic: sahara)" | 14:12 | |
| jeremyfreudberg | so, i won't discuss every aspect of health repair, but there's one aspect that i've been grappling with recently | 14:13 |
| jeremyfreudberg | as you know (or not), the idea was to base health repair off of the existing health checks mechanism | 14:13 |
| tosky | I'm re-reading the minutes from the PTG | 14:14 |
| jeremyfreudberg | and in looking at that code, i'm surprised at how much database stuff are involved | 14:14 |
| jeremyfreudberg | and from what i can tell, the point of putting health checks in the DB is to make things stateful-- don't start a check when one is already in progress, etc. plus with the checks being (configurably) periodic the db kinda acts as a log | 14:15 |
| jeremyfreudberg | anyway, my question for today is | 14:15 |
| jeremyfreudberg | is all that DB stuff really necessary for health repair? | 14:16 |
| jeremyfreudberg | my sense is, kinda, but not totally | 14:16 |
| tosky | don't you see the same need for a synchronization point, so that the same operation don't start again? | 14:17 |
| tosky | or anyway, do you think it could be implemented differently? | 14:17 |
| jeremyfreudberg | short answer- yes to both | 14:17 |
| jeremyfreudberg | long answer- | 14:17 |
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| jeremyfreudberg | because health repair is thought to only be executed by user request (NOT periodic), the synchronization point is easier to pin down. AND, I planned to make the repair modes as idempotent and non-disruptive as possible, so theoretically i don't care if the repair call gets sent twice in quick succession | 14:20 |
| jeremyfreudberg | but then again, some kind of locking mechanism seems intuitively necssary | 14:20 |
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| jeremyfreudberg | not to mention, if there is no lock, then the user could send way-too-many repair requests launching way-too-many subprocesses | 14:21 |
| tosky | yep, that's the risk | 14:21 |
| tosky | "why it's not working, repair, REPAAAAIR" | 14:22 |
| tosky | yeah | 14:22 |
| jeremyfreudberg | so, a lock of some kind is necessary, i'm just not convinced that tossing around db state is the right way to go about it | 14:22 |
| jeremyfreudberg | not sure how else to do it, though | 14:22 |
| tosky | maybe minimizing the use of the DB may be enough | 14:22 |
| jeremyfreudberg | i'll see what i can trim out | 14:23 |
| jeremyfreudberg | i haven't done much of a deep dive yet | 14:24 |
| tosky | or we can have an hard-requirement on tooz (which is optional right now, used only for one functionality) | 14:24 |
| jeremyfreudberg | yes, there is tooz | 14:24 |
| tosky | ... if we can make it working with python3, the better | 14:24 |
| jeremyfreudberg | another subtopic about health repair: | 14:24 |
| jeremyfreudberg | i wrote this on the story last night | 14:25 |
| jeremyfreudberg | that there won't be a direct correspondence between all the existing health checks, and the new health repair modes | 14:25 |
| jeremyfreudberg | at least in the basic case | 14:25 |
| tosky | uh, what is the story? I didn't get the notification | 14:26 |
| tosky | but I should be subscribed to all sahara* notifications | 14:27 |
| jeremyfreudberg | the description update doesn't seem to trigger the email | 14:27 |
| jeremyfreudberg | https://storyboard.openstack.org/#!/story/2003842 | 14:27 |
| tosky | oh, ok | 14:27 |
| jeremyfreudberg | let me try to remember what i mean by my point, actually | 14:29 |
| tosky | what would the main difference be then? | 14:29 |
| tosky | yeah, better | 14:29 |
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| jeremyfreudberg | actually, i disagree now, with what i just said (not sure what i was thinking last night) | 14:31 |
| jeremyfreudberg | all of the health checks can have an inverse which is its repair mode | 14:31 |
| jeremyfreudberg | with the exception of this check https://github.com/openstack/sahara/blob/master/sahara/service/health/health_check_base.py#L133 | 14:31 |
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| jeremyfreudberg | oh, i think my point from last night was, health repair can eclipse health check | 14:36 |
| jeremyfreudberg | as in, we can write MORE health repair modes, beyond what limited checks we have | 14:36 |
| jeremyfreudberg | and my other point-- there is a minimal amount of work that needs to be done before the plugin split (the plugin-specific health repair modes need to be able to import the right stuff from core) | 14:37 |
| tosky | and then we will have more checks? If we have more repair modes, it means that we can check that something is really broken | 14:37 |
| tosky | uh, I didn't check if Telles also considered that | 14:37 |
| jeremyfreudberg | yes-- hopefully new repair modes will encourage new checks | 14:38 |
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| jeremyfreudberg | regarding the split, i think it should only be one new import to cover | 14:39 |
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| jeremyfreudberg | there would be a new module similar to sahara/service/health/health_check_base.py which has exceptions and the base class, for the plugin-specific repair modes to consume | 14:40 |
| jeremyfreudberg | actually, telles did something which i don't understand | 14:41 |
| jeremyfreudberg | looking at what he has on github (which may not be accurate), he simply moved health_check_base.py from sahara/service/health to sahara/plugins | 14:42 |
| jeremyfreudberg | but he didn't change the imports within that file | 14:42 |
| tosky | uh | 14:43 |
| jeremyfreudberg | he did fix the import on the, for example, sahara-plugin-ambari side though | 14:44 |
| jeremyfreudberg | anyway, i have to signoff in a minute | 14:44 |
| tosky | oki, I guess we discussed enough points | 14:44 |
| jeremyfreudberg | yes | 14:45 |
| jeremyfreudberg | i'll be sure to look further into health repair | 14:45 |
| tosky | Telles, when you read this, remember to recheck the rechecks | 14:45 |
| tosky | thanks! | 14:45 |
| tosky | so if there is nothing else to discuss, we can close it here | 14:45 |
| jeremyfreudberg | yup, thanks, let's close | 14:45 |
| tosky | see you next week | 14:45 |
| jeremyfreudberg | bye | 14:46 |
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| tosky | (or even before, on the usual channel) | 14:46 |
| tosky | #endmeeting | 14:46 |
| *** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/" | 14:46 | |
| openstack | Meeting ended Thu Oct 18 14:46:21 2018 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 14:46 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/sahara/2018/sahara.2018-10-18-14.03.html | 14:46 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/sahara/2018/sahara.2018-10-18-14.03.txt | 14:46 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/sahara/2018/sahara.2018-10-18-14.03.log.html | 14:46 |
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| mlavalle | #startmeeting neutron_l3 | 15:00 |
| openstack | Meeting started Thu Oct 18 15:00:37 2018 UTC and is due to finish in 60 minutes. The chair is mlavalle. Information about MeetBot at http://wiki.debian.org/MeetBot. | 15:00 |
| openstack | Useful Commands: #action #agreed #help #info #idea #link #topic #startvote. | 15:00 |
| *** openstack changes topic to " (Meeting topic: neutron_l3)" | 15:00 | |
| openstack | The meeting name has been set to 'neutron_l3' | 15:00 |
| manjeets_ | o/ | 15:00 |
| mlavalle | o/ | 15:00 |
| haleyb | hi | 15:00 |
| davidsha_ | o/ | 15:00 |
| mlavalle | haleyb: go Sox. almost there | 15:01 |
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| haleyb | even the bad calls have been going our way :) | 15:01 |
| * haleyb is very tired this morning | 15:01 | |
| mlavalle | is next game at Fainway? | 15:01 |
| haleyb | no, tonight in houston | 15:01 |
| mlavalle | good luck | 15:02 |
| Swami | hi | 15:02 |
| mlavalle | #topic Announcements | 15:02 |
| *** openstack changes topic to "Announcements (Meeting topic: neutron_l3)" | 15:02 | |
| mlavalle | Just a reminder that next week we reach Stein-1 | 15:02 |
| njohnston | o/ | 15:02 |
| mlavalle | and the Summit in Berlin is three weeks away, November 13 - 15 | 15:03 |
| mlavalle | any other annoucements? | 15:03 |
| mlavalle | ok, let's move on | 15:04 |
| mlavalle | #topic Bugs | 15:04 |
| *** openstack changes topic to "Bugs (Meeting topic: neutron_l3)" | 15:04 | |
| mlavalle | Swami: fire away | 15:04 |
| Swami | mlavalle: thanks, will do | 15:04 |
| Swami | #link https://bugs.launchpad.net/neutron/+bug/1794991 | 15:05 |
| openstack | Launchpad bug 1794991 in neutron "Inconsistent flows with DVR l2pop VxLAN on br-tun" [Undecided,New] | 15:05 |
| Swami | I was trying to reproduce this pike, but unfortunately I am not successful in reproducing this bug. | 15:05 |
| Swami | We have also internally seen such problems in newton. | 15:06 |
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| Swami | Has anyone else seen similar problems mentioned in this bug, where there is a race between the vxlan tunnel creation and the l2pop adding the flows for the vxlan. | 15:06 |
| mlavalle | no I haven't | 15:06 |
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| mlavalle | so, according to the bug report, what is the effect when it happens? | 15:07 |
| Swami | mlavalle: OK I will try couple of more tests to see if I can reproduce this. There is definitely a race. | 15:07 |
| mlavalle | The reason I ask is that we have other bugs related to DVR | 15:08 |
| Swami | When it happens the new VMs that come in on that compute cannot reach the DHCP server on the network node and also VM to VM communication will be blocked. | 15:08 |
| Swami | mlavalle: So just to refresh, the vxlan tunnels are created when the agent first registers with the neutron-server right? | 15:08 |
| Swami | Is there a possibility that the vxlan tunnel interfaces might change down the line. | 15:09 |
| mlavalle | yes, that should be it | 15:09 |
| mlavalle | and no, I don't think so | 15:09 |
| mlavalle | The reason I am asking is that I am debugging a couple of DVR related bugs | 15:09 |
| Swami | mlavalle: sure | 15:10 |
| mlavalle | I will keep this in mind as a possible cause for the bugs I am working on | 15:10 |
| mlavalle | If we see this problem, it should be in the gate | 15:10 |
| mlavalle | where we have concurrency | 15:10 |
| Swami | mlavalle: Yes basically you should have all the flows in place for the communication to be error free. | 15:10 |
| Swami | mlavalle: ok thanks | 15:10 |
| mlavalle | many of these races happen only with many concurrrent thinks happening | 15:11 |
| Swami | mlavalle:yes that's why reproducing it is a nightmare, unless we have the hardware resources and a script to trigger it. | 15:12 |
| Swami | #link https://bugs.launchpad.net/neutron/+bug/1793529 | 15:12 |
| openstack | Launchpad bug 1793529 in neutron "[dvr][ha][dataplane down] router_gateway port binding host goes wrong after the 'master' host down/up" [Undecided,In progress] - Assigned to LIU Yulong (dragon889) | 15:12 |
| mlavalle | now, if the it hist DHCP, it seems to me that the problem goes beyond DVR, right? | 15:12 |
| Swami | There is a patch up for review. #link https://review.openstack.org/#/c/606384/ | 15:12 |
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| Swami | mlavalle: no the reason is there should be a flow rule in there with the MAC address of the dhcp server pointing to the right vxlan tunnel. Otherwise the dhcp request is not sent | 15:13 |
| mlavalle | ah, that's right | 15:14 |
| mlavalle | ok? | 15:14 |
| mlavalle | ok | 15:14 |
| Swami | mlavalle: It is directly a problem with DHCP, but somehow when the l2pop populates the flows, it is either not populated properly when the VM on that network pops up or it is getting removed on restarts etc., | 15:14 |
| mlavalle | ack | 15:15 |
| Swami | s/it is directly/it is not directly | 15:15 |
| Swami | mlavalle: thanks | 15:15 |
| Swami | If you have not review this, please review this patch. #link https://review.openstack.org/#/c/606384/ | 15:15 |
| Swami | The next one in the list is | 15:15 |
| Swami | #link https://bugs.launchpad.net/neutron/+bug/1796491 | 15:16 |
| openstack | Launchpad bug 1796491 in neutron "DVR Floating IP setup in the SNAT namespace of the network node and also in the qrouter namespace in the compute node" [Medium,In progress] - Assigned to Swaminathan Vasudevan (swaminathan-vasudevan) | 15:16 |
| Swami | There is a patch up for review. #link https://review.openstack.org/609924 | 15:16 |
| Swami | haleyb: liuyulong: thanks for your reviews on the patch. | 15:17 |
| Swami | haleyb: I will address your comment, I think it is a minor one. So I hope this patch is in a good condition. | 15:17 |
| haleyb | thanks | 15:17 |
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| Swami | The next one is | 15:18 |
| Swami | #link https://bugs.launchpad.net/neutron/+bug/1796824 | 15:18 |
| openstack | Launchpad bug 1796824 in neutron "Port in some type of device_owner should not allow update IP address" [Medium,In progress] - Assigned to LIU Yulong (dragon889) | 15:18 |
| Swami | There is a patch up for review #link https://review.openstack.org/#/c/608909/ | 15:19 |
| Swami | If not review please review it. | 15:19 |
| Swami | I think this bug #link https://bugs.launchpad.net/neutron/+bug/1785227 is a duplicate of the above one. So I am going to mark it as Duplicate. | 15:20 |
| openstack | Launchpad bug 1785227 in neutron "Router port: no dataplane update on change" [Medium,Confirmed] | 15:20 |
| Swami | Does anyone have any concerns on this. | 15:20 |
| mlavalle | go ahead | 15:20 |
| Swami | mlavalle: ok | 15:20 |
| Swami | #link https://bugs.launchpad.net/neutron/+bug/1797037 | 15:21 |
| openstack | Launchpad bug 1797037 in neutron "Extra routes configured on routers are not set in the router namespace and snat namespace with DVR-HA routers" [Medium,In progress] - Assigned to Brian Haley (brian-haley) | 15:21 |
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| Swami | #link https://review.openstack.org/609273 - This patch fails zuul. | 15:21 |
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| Swami | It seems to be happy now, but let us see if it will merge. | 15:22 |
| Swami | #link https://bugs.launchpad.net/neutron/+bug/1786272 | 15:22 |
| openstack | Launchpad bug 1786272 in neutron "Connection between two virtual routers does not work with DVR" [Medium,In progress] - Assigned to Slawek Kaplonski (slaweq) | 15:22 |
| slaweq | I just pushed new PS for this one: https://review.openstack.org/#/c/597567/27 | 15:23 |
| Swami | #link https://review.openstack.org/#/c/597567/ | 15:23 |
| slaweq | liuyulong is doing great review and testing manually different scenarios on this patch | 15:23 |
| Swami | slaweq: yes just noticed. I will review it. I hope everything is fine with this patch. But liuyulong had some questions still. | 15:23 |
| slaweq | I hope that now it will be fine | 15:23 |
| Swami | slaweq: Ok thanks. | 15:24 |
| slaweq | Swami: if You can, please try it also on Your env - it's really tricky patch IMO and I don't want to break something :) | 15:24 |
| liuyulong | I'm testing this locally too. | 15:24 |
| Swami | slaweq: Yes I will do one more round of testing today. | 15:24 |
| slaweq | You have much more experience with dvr than me | 15:24 |
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| slaweq | thx liuyulong and Swami | 15:24 |
| Swami | slaweq:I also wanted to test the shared-network scenario with this patch between two tenants. Let me do it. | 15:25 |
| slaweq | Swami: ok | 15:25 |
| slaweq | thx | 15:25 |
| haleyb | thanks everyone, at PS27 this has taken a long time but it's good work :) | 15:25 |
| Swami | haleyb: Yep it is a complex one. | 15:26 |
| slaweq | yes, it is | 15:26 |
| Swami | The next one is | 15:26 |
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| Swami | #link https://bugs.launchpad.net/neutron/+bug/1774459 | 15:26 |
| openstack | Launchpad bug 1774459 in neutron "Update permanent ARP entries for allowed_address_pair IPs in DVR Routers" [High,Confirmed] - Assigned to Swaminathan Vasudevan (swaminathan-vasudevan) | 15:26 |
| Swami | mlavalle: haleyb: can you take a look at this patch . #link https://review.openstack.org/601336 | 15:27 |
| mlavalle | Swami: yes, I promised last week to take a look and couldn't find the time. sorry | 15:27 |
| Swami | This is just a WIP based on our conversation at the PTG, but I am waiting for your inputs on this. I have a question. I also mentioned it in the last meeting. | 15:27 |
| mlavalle | I'll try again this week | 15:27 |
| Swami | mlavalle: thanks | 15:27 |
| haleyb | i'll try to look by tomorrow too | 15:28 |
| Swami | mlavalle: haleyb : thank you | 15:28 |
| Swami | mlavalle: that's all I have for today. | 15:28 |
| Swami | mlavalle: Back to you. | 15:28 |
| mlavalle | I want to mention two bugs | 15:29 |
| mlavalle | First one is https://bugs.launchpad.net/neutron/+bug/1795870 | 15:29 |
| openstack | Launchpad bug 1795870 in neutron "Trunk scenario test test_trunk_subport_lifecycle fails from time to time" [High,Confirmed] - Assigned to Miguel Lavalle (minsel) | 15:29 |
| mlavalle | it was reported as a trunk failure (it is a trunk test failure) | 15:29 |
| mlavalle | however, based on the debugging I've done so far, it seems to be a DVR problem | 15:30 |
| mlavalle | I left debugging notes a couple of days ago | 15:30 |
| mlavalle | so for the time being I'm adding it to the DVR backlog | 15:30 |
| mlavalle | and I'l, continue debugging | 15:30 |
| Swami | mlavalle: thanks | 15:31 |
| mlavalle | the problem really occurs when trying to ssh to a test instance using a floating ip | 15:31 |
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| mlavalle | the second bug is https://bugs.launchpad.net/neutron/+bug/1787919 | 15:33 |
| openstack | Launchpad bug 1787919 in neutron "Upgrade router to L3 HA broke IPv6" [High,Confirmed] - Assigned to Miguel Lavalle (minsel) | 15:33 |
| mlavalle | At this point I have a deployment reproducing the conditions and am testing | 15:33 |
| mlavalle | I'll keep pushing forward with this one as well | 15:33 |
| mlavalle | finally, we have https://bugs.launchpad.net/neutron/+bug/1789434 | 15:34 |
| openstack | Launchpad bug 1789434 in neutron "neutron_tempest_plugin.scenario.test_migration.NetworkMigrationFromHA failing 100% times" [High,Confirmed] - Assigned to Manjeet Singh Bhatia (manjeet-s-bhatia) | 15:34 |
| manjeets_ | https://review.openstack.org/#/c/611461/ | 15:34 |
| manjeets_ | I posted a solution ideally notification part should be in l3_hamodedb code | 15:34 |
| manjeets_ | Please reviews it if solution is okay I’ll update and add tests | 15:35 |
| Swami | manjeets_: Yes i did a first pass on it yesterday | 15:36 |
| manjeets_ | Thanks swami totally agree to your comments | 15:36 |
| manjeets_ | I’ll revise it today | 15:37 |
| Swami | manjeets_: thanks | 15:38 |
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| mlavalle | manjeets_: I will also look at it soon | 15:38 |
| mlavalle | any other bugs we should discuss today? | 15:40 |
| mlavalle | ok, moving on | 15:42 |
| mlavalle | #topic On demand agenda | 15:42 |
| *** openstack changes topic to "On demand agenda (Meeting topic: neutron_l3)" | 15:42 | |
| davidsha_ | mlavalle, Thank you for looking at the agent refactor, We're working through it atm to make sure the tests are right. | 15:43 |
| mlavalle | davidsha_: last evening I left Xubo some guidnace as to how to debug the failures | 15:43 |
| davidsha_ | It's mostly mocks pointing to the wrong objects atm. | 15:43 |
| mlavalle | yeah, I know. I just didn't want to fix it for him | 15:43 |
| mlavalle | I wanted to have him work through the process | 15:44 |
| mlavalle | it's part of my job to help new devs | 15:44 |
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| davidsha_ | kk, We're having calls as well so I'll try to keep things moving! | 15:45 |
| mlavalle | tell him that if he has questions or needs guidance, he can leave a comment in the patch and I'll follow up | 15:45 |
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| mlavalle | any other topics to discuss? | 15:46 |
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| mlavalle | ok, thanks for attending | 15:46 |
| davidsha_ | cool, think he's online if you have any questions | 15:47 |
| davidsha_ | thanks! | 15:47 |
| mlavalle | have a great weekend! | 15:47 |
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| mlavalle | haleyb: go finish those Astros off tonight! | 15:47 |
| mlavalle | #endmeeting | 15:47 |
| *** openstack changes topic to "OpenStack Meetings || https://wiki.openstack.org/wiki/Meetings/" | 15:47 | |
| openstack | Meeting ended Thu Oct 18 15:47:34 2018 UTC. Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4) | 15:47 |
| openstack | Minutes: http://eavesdrop.openstack.org/meetings/neutron_l3/2018/neutron_l3.2018-10-18-15.00.html | 15:47 |
| openstack | Minutes (text): http://eavesdrop.openstack.org/meetings/neutron_l3/2018/neutron_l3.2018-10-18-15.00.txt | 15:47 |
| openstack | Log: http://eavesdrop.openstack.org/meetings/neutron_l3/2018/neutron_l3.2018-10-18-15.00.log.html | 15:47 |
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| davidsha_ | talk to ye | 15:47 |
| haleyb | mlavalle: will do :) | 15:47 |
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