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openstackgerrit | Matthew Treinish proposed a change to openstack/neutron: Add db migrations test framework with data https://review.openstack.org/124946 | 04:02 |
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atmark | Hello, I have a multi-node setup consisting 1 controller, 3 computes, and 1 network node. I have a problem where I need to attach the public ip directly to the instance interface to avoid the NAT. One solution I know is to implement a flat network but I'm afraid I might break things when I'm unsure how to implement it in a existing setup. I would like to know if it would be possible to ping the | 05:44 |
atmark | private ip of the instance from the network node? Thanks in advance. | 05:44 |
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openstackgerrit | Romil Gupta proposed a change to openstack/neutron: Stale VXLAN and GRE tunnel port deletion https://review.openstack.org/121000 | 06:08 |
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openstackgerrit | Isaku Yamahata proposed a change to openstack/neutron: l3_db.py: simplify _process_floating_ips() and _process_interfaces() https://review.openstack.org/124696 | 06:42 |
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openstackgerrit | OpenStack Proposal Bot proposed a change to openstack/neutron: Imported Translations from Transifex https://review.openstack.org/124955 | 06:49 |
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openstackgerrit | Kevin Benton proposed a change to openstack/neutron: Catch exceptions in router rescheduler https://review.openstack.org/124961 | 07:27 |
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ygk | HI all | 07:38 |
ygk | i have a query on neutron | 07:38 |
ygk | anyone there ? | 07:39 |
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ygk | i have a query on neutron | 07:40 |
ygk | is it worth learning the open flow details like packet flow etc from the openflow documentation ? | 07:40 |
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ygk | anybody here who can answer my query please ? | 07:47 |
ygk | is it worth learning the open flow details like packet flow etc from the openflow documentation ? | 07:47 |
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jschwarz | morning :) | 07:54 |
ygk | hi jschwarz | 07:55 |
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* maishsk says hello! | 07:55 | |
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maishsk | Can anyone point me to some documentation on how to get LBaaS working with Netscaler? | 07:56 |
jschwarz | :) | 07:57 |
openstackgerrit | Ann Kamyshnikova proposed a change to openstack/neutron: Implement ModelsMigrationsSync test from oslo.db https://review.openstack.org/76520 | 07:58 |
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maishsk | Anyone around? | 08:13 |
jschwarz | maishsk, i'll try #openstack-lbaas if I were you | 08:13 |
maishsk | jschwarz: Thanks will do | 08:15 |
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openstackgerrit | Kevin Benton proposed a change to openstack/neutron: ML2: move L3 cleanup into separate transaction https://review.openstack.org/124975 | 08:16 |
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openstackgerrit | Kevin Benton proposed a change to openstack/neutron: ML2: move L3 cleanup into separate transaction https://review.openstack.org/124975 | 08:17 |
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openstackgerrit | John Schwarz proposed a change to openstack/neutron: HA integration tests https://review.openstack.org/123000 | 08:20 |
openstackgerrit | John Schwarz proposed a change to openstack/neutron: Test HA router failover https://review.openstack.org/117994 | 08:20 |
openstackgerrit | John Schwarz proposed a change to openstack/neutron: Divide _cleanup_namespaces for easy extensibility https://review.openstack.org/123435 | 08:20 |
openstackgerrit | John Schwarz proposed a change to openstack/neutron: L3 Agent should generate ns_name in a single place https://review.openstack.org/123434 | 08:20 |
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openstackgerrit | John Schwarz proposed a change to openstack/neutron: L3 agent should always use a unique CONF object https://review.openstack.org/124752 | 08:20 |
openstackgerrit | John Schwarz proposed a change to openstack/neutron: Don't create IptablesManager on RouterInfo's init https://review.openstack.org/124751 | 08:20 |
openstackgerrit | John Schwarz proposed a change to openstack/neutron: Iterate over same port_id if more than one exists https://review.openstack.org/122357 | 08:20 |
jschwarz | weee spam :> | 08:20 |
jswiders | jschwarz: :) it was a bit sad looking through gerrit emails and seeing you recheck pep8 error :> | 08:22 |
jschwarz | jswiders, yeah... I was sure that it was a non-deterministic error since later patches passed and the earlier ones didn't | 08:22 |
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jschwarz | jswiders, I forgot I deleted some spaces and didn't make the association | 08:23 |
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ZZelle | ihrachyshka, hi | 09:11 |
ihrachyshka | ZZelle: hey | 09:15 |
ZZelle | ihrachyshka, one question about 2014.1.3 | 09:15 |
ihrachyshka | sure | 09:15 |
ZZelle | ihrachyshka, should i add https://bugs.launchpad.net/neutron/+bug/1334926 to https://launchpad.net/neutron/+milestone/2014.1.3 ? | 09:16 |
ZZelle | ihrachyshka, (i fails to find how to do it) | 09:16 |
* ihrachyshka too | 09:16 | |
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ihrachyshka | I guess it will be done by release management fairy | 09:17 |
* ZZelle less alone | 09:17 | |
ZZelle | ihrachyshka, oki | 09:17 |
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jschwarz | roaet, ping | 09:46 |
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openstackgerrit | Isaku Yamahata proposed a change to openstack/neutron: l3_db.py: refactor port creation/deleteion/update for routervm https://review.openstack.org/124699 | 10:10 |
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akamyshnikova | salv-orlando, hi! sorry for bothering you, but what about requirements? Should I write an email about asking for exception this? | 10:15 |
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openstackgerrit | Isaku Yamahata proposed a change to openstack/neutron: l3_db.py: simplify _process_floating_ips() and _process_interfaces() https://review.openstack.org/124696 | 10:23 |
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salv-orlando | akamyshnikova: I’ve asked on IRC yesterday, and it seems an exception is needed (I did not get a confirmation like “we’re 100% sure” though). I think it’s ok to send an email. Also, https://bugs.launchpad.net/neutron/+bug/1346444 is not currently included in RC1. Are you able to target it. I’m ok with that as I think we’ll be happy to accept anything that increases test coverage. | 10:25 |
akamyshnikova | salv-orlando, thanks! I will write an email, but seems I don't have rights to target this bug to RC1.. | 10:30 |
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salv-orlando | akamyshnikova: I’ll do that for you | 10:30 |
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akamyshnikova | salv-orlando, thanks a lot! :) | 10:31 |
salv-orlando | akamyshnikova: done | 10:31 |
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maishsk | getting this error in lbaas-agent.log CRITICAL neutron [req-fd82faf8-f2cb-4e84-b75b-015820671d87 None] __init__() takes exactly 2 arguments (3 given) | 11:27 |
maishsk | trying to use netscaler LBaaS driver | 11:27 |
maishsk | any ideas - much appreciated | 11:27 |
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jswiders | maishsk: I'm not familiar with LBaaS but netscaler driver (and other except for default haproxy) use LoadBalancerAbstractDriver which has comment "DEPRECATION WARNING. THIS ABSTRACT DRIVER IS FOR THE LBAAS V1 OBJECT MODEL AND SHOULD NO LONGER BE USED TO CREATE DRIVERS." - so I guess problem is that netscaler driver is for v1 LBaaS | 12:00 |
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maishsk | jswiders: Thanks - so how does LBaaS drivers work with Netscaler - or other vendors for that matter? | 12:01 |
jswiders | maishsk: I don't know - maybe try asking on #openstack-lbaas - I only see that Radware has WiP patch to add v2 lbaas driver | 12:03 |
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maishsk | jswiders: Thanks - will do | 12:04 |
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HenryG | akamyshnikova: hi | 12:33 |
HenryG | akamyshnikova: What does https://review.openstack.org/124946 do that is not covered by https://review.openstack.org/76520 ? | 12:34 |
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openstackgerrit | John Schwarz proposed a change to openstack/python-neutronclient: Don't get keystone session if using noauth https://review.openstack.org/125022 | 12:42 |
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openstackgerrit | Alexey I. Froloff proposed a change to openstack/neutron: Specify prefix length for IPv6 subnets https://review.openstack.org/125026 | 12:45 |
akamyshnikova | HenryG, hi, this is more like https://review.openstack.org/111286 | 12:45 |
openstackgerrit | Paul Michali proposed a change to openstack/neutron-specs: Cisco VPNaaS and router integration https://review.openstack.org/123551 | 12:46 |
akamyshnikova | HenryG, but I have doubts that we need it | 12:48 |
HenryG | akamyshnikova: WalkVersions? It does upgrade and then downgrade? | 12:50 |
akamyshnikova | HenryG, yes | 12:50 |
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akamyshnikova | HenryG, as some migrations do not support downgrade, I have doubts :) | 12:52 |
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HenryG | akamyshnikova: I see your point. We would have to block every downgrade below icehouse. | 12:53 |
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HenryG | akamyshnikova: I mean block/skip the test of every downgrade below icehouse. And it is not easy to tell where a specific version lies in the timeline. | 12:54 |
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akamyshnikova | HenryG, something like this | 12:56 |
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openstackgerrit | Alexey I. Froloff proposed a change to openstack/neutron: Provide routes for neighbor IPv4 subnets https://review.openstack.org/125043 | 13:03 |
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jamiehannaford | what is the "status_description" attribute on a LB pool for? | 13:18 |
jamiehannaford | I can't find it documented anywhere | 13:18 |
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jamiehannaford | how does it differ from "status"? | 13:18 |
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HenryG | akamyshnikova: Matt's tests seem to work for me. | 13:20 |
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akamyshnikova | HenryG, I have not check it, if it so that is great :) | 13:27 |
akamyshnikova | HenryG, anyway I think that should be used this https://review.openstack.org/99965 from oslo, when it will be merged. | 13:29 |
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HenryG | akamyshnikova: I agree | 13:31 |
maishsk | enikanorov: Are you up and about? | 13:31 |
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openstackgerrit | Alexey I. Froloff proposed a change to openstack/neutron: Only raise exception if no IP wass allocated in dual-stack network https://review.openstack.org/125061 | 13:55 |
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openstackgerrit | Matthew Treinish proposed a change to openstack/neutron: Add db migrations test framework with data https://review.openstack.org/124946 | 14:13 |
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openstackgerrit | Rob Pothier proposed a change to openstack/neutron: ML2 Cisco Nexus MD: Fix UT to send one create vlan message https://review.openstack.org/118656 | 14:18 |
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amuller | kevinbenton: heya | 14:28 |
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amuller | kevinbenton: Hoping you're there, about https://review.openstack.org/#/c/124478/3 | 14:29 |
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openstackgerrit | Matthew Treinish proposed a change to openstack/neutron: Add db migrations test framework with data https://review.openstack.org/124946 | 15:49 |
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openstackgerrit | Jakub Libosvar proposed a change to openstack/neutron: Separate wait_until to new Waiter class https://review.openstack.org/125109 | 16:15 |
openstackgerrit | Jakub Libosvar proposed a change to openstack/neutron: Separate wait_until to new Waiter class https://review.openstack.org/125109 | 16:16 |
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openstackgerrit | Assaf Muller proposed a change to openstack/neutron: Improve ml2 port binding failure logging https://review.openstack.org/125115 | 16:32 |
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amuller | rkukura: ping about https://review.openstack.org/#/c/125115/ | 16:47 |
amuller | ml2 port binding failure logging | 16:47 |
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rkukura | amuller: will look… | 16:47 |
amuller | rkukura: Thanks, I'm really curious what you think | 16:48 |
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openstackgerrit | Jakub Libosvar proposed a change to openstack/neutron: Separate wait_until to new Waiter class https://review.openstack.org/125109 | 17:10 |
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harmw | markmcclain: may I bug you yet again? josh sent me :P | 17:28 |
harmw | my configdrive isn't picking up static network stuff | 17:28 |
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markmcclain | harmw: intersting… what is in the config drive? | 17:29 |
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harmw | everything, apart from the actual file that contains interface stuff | 17:29 |
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harmw | lets see if I can mount it again | 17:30 |
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harmw | so, well | 17:32 |
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harmw | I had to hack nova a little on the computenode to start with | 17:32 |
harmw | but it now injects the template file just fine, but that contains litteral $ | 17:33 |
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harmw | markmcclain: plus, I had to hack netutils.py to not continue on if not network.get_meta('injected'): and if subnet_v4.get_meta('dhcp_server') is not None: | 17:36 |
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markmcclain | harmw: hmmm… I'd have to dig on those nova code paths | 17:38 |
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markmcclain | harmw: it's been a while since I've worked in the area of those | 17:38 |
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harmw | well, if you know how to set that 'injected' property properly it would be a great help I guess :) since that would make it start in the first place | 17:39 |
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openstackgerrit | Ed Bak proposed a change to openstack/neutron: Don't fail when trying to unbind a router https://review.openstack.org/124865 | 17:41 |
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openstackgerrit | Assaf Muller proposed a change to openstack/neutron: Improve ml2 port binding failure logging https://review.openstack.org/125115 | 17:46 |
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kevinbenton | armax: did my response make sense? | 18:08 |
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armax | kevinbenton: looking | 18:08 |
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kevinbenton | armax: looking now. i see that every floating IP delete starts its own transaction so I could actually remove _process_l3_delete from the transaction completely | 18:10 |
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armax | kevinbenton: that was | 18:10 |
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armax | kevinbenton: what I was thinking. | 18:10 |
armax | kevinbenton: even though it’s still a bit ugly | 18:11 |
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kevinbenton | armax: yeah, i think in the future we should probably eliminate all of these auto-delete things to keep operations very focused | 18:12 |
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kevinbenton | armax: and then offer some other cleanup API for these types of operations | 18:12 |
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armax | kevinbenton: in the future I think we should rewrite all of this stuff, period | 18:12 |
armax | :) | 18:12 |
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openstackgerrit | Kevin Benton proposed a change to openstack/neutron: ML2: move L3 cleanup into separate transaction https://review.openstack.org/124975 | 18:16 |
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kevinbenton | armax: small steps :-) | 18:16 |
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armax | kevinbenton: yeah right | 18:16 |
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openstackgerrit | Erik Colnick proposed a change to openstack/neutron: Add admin tenant name to nova notifier https://review.openstack.org/103978 | 18:19 |
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sdague | arosen: what's the status on https://bugs.launchpad.net/nova/+bug/1323658 | 18:34 |
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sdague | ok, the fact that the neutron team is defering means I'm going to turn off the tests | 18:34 |
sdague | because this bug has basically blocked icehouse from landing any code | 18:35 |
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sdague | ok, here is the skip proposal - https://review.openstack.org/#/c/125150/ | 18:45 |
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openstackgerrit | Kevin Benton proposed a change to openstack/neutron: ML2: move L3 cleanup out of network transaction https://review.openstack.org/124975 | 19:02 |
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dougwig | brocade CI owner around? logs are 404. https://review.openstack.org/#/c/123468/ | 19:26 |
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kevinbenton | armax: still around? I want to update the comment as rkukura suggested, but don’t want to lose your +2 | 19:29 |
armax | kevinbenton: meh | 19:30 |
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kevinbenton | armax: what does that mean? :-) | 19:30 |
armax | your call | 19:30 |
armax | kevinbenton: the method comments are gonna be more than the actual code | 19:30 |
armax | go ahead if you like | 19:30 |
kevinbenton | armax: ok. i’ll change it because it is a little easier to read | 19:31 |
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rkukura | armax: How nervous are you about kevinbenton’s patch? | 19:32 |
armax | rkukura: a bit | 19:33 |
armax | much | 19:33 |
openstackgerrit | Kevin Benton proposed a change to openstack/neutron: ML2: move L3 cleanup out of network transaction https://review.openstack.org/124975 | 19:33 |
kevinbenton | armax: trust me. i’m from the internet :) | 19:33 |
rkukura | armax, kevinbenton: The approach I was considering was to remove both the semaphore locking and the with_lockmode(“update”), which is probably a lot riskier than kevinbenton’s approach! | 19:34 |
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armax | rkukura: whichever way we look at this is going to be riskier | 19:34 |
kevinbenton | rkukura: we do need to get rid of the lockmode, but the more i thought about it the less I was convinced that the floating IP deletion being in the transaction was right at all | 19:34 |
armax | it’s hard to understand the full implications of this change at this point, hence my initial approach of just changing the mutex | 19:35 |
kevinbenton | rkukura: that’s a call to a separate plugin that could do anything | 19:35 |
armax | fixing the deadlock by preserving somehow the semantic of the whole method | 19:35 |
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armax | but maybe not, either way…we won’t be able to fully grasp the implications of any change because we suck at testing | 19:36 |
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kevinbenton | (sorry for vendor example) undoing the DB operations of a floating IP delete without recreating on the backend will cause an inconsistency with the Big Switch L3 plugin | 19:37 |
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rkukura | kevinbenton: I’m not very worried about the chance that the floating IPs are deleted but then the network delete fails. This at least leaves the system in a state that can be observed via the API and the network delete can be tried again. | 19:39 |
kevinbenton | armax: isn’t that what you are worried about? | 19:40 |
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ChuckC | armax: I'm looking at https://bugs.launchpad.net/neutron/+bug/1374473 | 19:44 |
armax | kevinbenton: yes, it is | 19:44 |
ChuckC | armax: any suspicions about the double binding? | 19:44 |
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armax | ChuckC: that bug is not a low-hanging fruit I am afraid | 19:44 |
rkukura | kevinbenton, armax: My only worry is that some of the processing somewhere under _process_l3_delete might now hit a DB record that some other thread has locked, and deadlock resulting in a DB timeout. But the delete_port should not be a problem because it does its own semaphore locking. | 19:45 |
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armax | kevinbenton: I am not sure whether that could occur, but I worry whether we could end up in a state where a spurious failure occurs and we are unable to delete the network after an attempted failure | 19:47 |
armax | kevinbenton: since this code is tested poorly to put it kindly, everytime it needs to be touched I get goosebumps | 19:48 |
armax | kevinbenton: in theory this should not happen, but there could be a bug lurking around, in the core or in a backend plugin | 19:49 |
armax | kevinbenton: just like the one we found out and trying to deal with | 19:50 |
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htrmeira | Hey guys, my OpenStack installation is not recycling ips. Do you have any clues of what could be causing this? Thanks. :) | 19:52 |
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kevinbenton | armax, rkukura: is there anything else i can do to help? | 20:10 |
kevinbenton | armax, rkukura: test cases or something ? | 20:10 |
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kevinbenton | armax, rkukura: the problem is that current unit tests don’t combine ML2 with the L3 plugin IIRC | 20:11 |
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kevinbenton | armax, rkukura: so writing a unit test that would touch these would require a new test case using ML2 as the core plugin with the l3 service plugin loaded | 20:11 |
kevinbenton | armax, rkukura: i can do that, but then the patch becomes much larger | 20:12 |
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rkukura | kevinbenton, armax: The existing test_ml2_plugin UT uses a TestL3NatServicePlugin that inherits l3_db.L3NAT_db_mixin, so I think there should be some coverage. | 20:19 |
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kevinbenton | rkukura: oh okay. i didn’t see that | 20:22 |
kevinbenton | rkukura: do you have a pointer? | 20:22 |
kbringard | hey all quick ? about compute with ml2 if anyone has a moment | 20:22 |
kevinbenton | rkukura: because IIRC TestL3NatServicePlugin doesn’t use the core plugin | 20:23 |
kevinbenton | rkukura: it uses a fake one that only does db account | 20:23 |
kbringard | should nova.network.linux_net be handling the tap and qv deice creation on the compute node? or is that something which should be in the OVS agent? | 20:23 |
rkukura | kevinbenton: I was looking at neutron.tests.unit.ml2.test_ml2_plugin. | 20:24 |
kevinbenton | rkukura: oh, i see it can be passed a plugin | 20:24 |
kevinbenton | rkukura: https://github.com/openstack/neutron/blob/master/neutron/tests/unit/test_l3_plugin.py#L1950 | 20:24 |
armax | kevinbenton: I think that testing as an afterthought is a bad idea | 20:24 |
kevinbenton | armax: well it seems we have nothing exercising auto-cleanup, which would be good to cover, don’t you think? | 20:25 |
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armax | kevinbenton: sure | 20:25 |
armax | kevinbenton: but it | 20:25 |
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armax | kevinbenton: but ml2’s methods are huge | 20:26 |
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armax | any sensible UT coverage is gonna be hard at this point | 20:26 |
rkukura | kevinbenton: I was going to suggest adding a simple testcase for the specific deadlock scenario in this bug to test_ml2_plugin. | 20:26 |
kevinbenton | rkukura: i don’t see in that method where it uses the real L3 plugin that does something | 20:26 |
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rkukura | kevinbenton: It doesn’t use the real L3 plugin - it uses TestL3NatServicePlugin, which inherits the same base classes as the real L3 plugin | 20:27 |
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kevinbenton | rkukura: ok. so a UT for this should be easy then | 20:28 |
kevinbenton | rkukura: give me a few | 20:28 |
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rkukura | kevinbenton: I suggest trying to add a UT with the deadlock scenario, and see if it deadlocks without your fix. | 20:28 |
kevinbenton | rkukura: yes | 20:28 |
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rkukura | kevinbenton, armax: I think the idea here is to prevent regression, not to make a meaningful improvement in overall coverage. | 20:29 |
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HenryG | haleyb: Hi, thanks for your review on the devstack IPv6 patch | 20:37 |
armax | rkukura: isn’t that the whole point adding a test when you fix a bug? | 20:38 |
marun | rkukura: How can we prevent regression without improving coverage? | 20:38 |
rkukura | armax: We should ideally always add a UT to prevent regression when fixing a bug. | 20:39 |
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marun | rkukura: As if most of our unit tests validate anything at all? | 20:39 |
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marun | rkukura: When we see serious problems that are db-related, validating in sqlite tells us practically nothing. | 20:39 |
rkukura | marun: My point was that adding a simple test case to prevent regression of a single bug is different than systematically trying to improve test coverage (and test efficiency). | 20:40 |
marun | rkukura: It's almost worse than nothing, because it appears that it has given everyone a false sense that we know what the fsck we are doing. | 20:40 |
marun | rkukura: Given how complex ml2 methods are, and how many pieces they touch, testing them effectively is almost impossible | 20:41 |
HenryG | haleyb: Looking forward to your quick workaround. But what is needed for more robust support for IPv6 + DVR in devstack? | 20:41 |
rkukura | marun: Are you arguing kevinbenton should not try to add a test to prevent regression of this bug? | 20:41 |
haleyb | HenryG: my quick workaround did not work, it got through the install but the l3-agent had some problems | 20:41 |
marun | rkukura: I question whether a unit test is going to prevent regression that is db and backend specific | 20:42 |
marun | rkukura: About all we can do is hope that something doesn't break. | 20:42 |
rkukura | marun: I don’t think that is the case here. It was a semaphore deadlock causing the bug, not a DB issue. | 20:42 |
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kevinbenton | marun: this particular deadlock is not db specific | 20:43 |
kevinbenton | marun: this is a semaphore deadlock | 20:43 |
kevinbenton | marun: very basic | 20:43 |
marun | rkukura, kevinbenton: And the circumstance behind that deadlock is trivially reproduceable? | 20:43 |
kevinbenton | marun: yes | 20:43 |
HenryG | haleyb: :( If there is no easy workaround, then we have to put more thought into it. | 20:44 |
marun | kevinbenton: and what does a test for preventing regression look like, exactly? | 20:44 |
kevinbenton | marun: one second | 20:44 |
marun | kevinbenton: mocking things out and ensuring the process_l3 call happens before the transaction starts? | 20:45 |
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rkukura | marun: Whether the semaphore should be there at all is another issue - this is intended to prevent local DB greenthread deadlock, but unfortunately is often perceived as providing global atomicity, which it doesn't. | 20:45 |
haleyb | HenryG: yes. we should be able to just send everything through the network node, but it had problem adding routing rules | 20:46 |
marun | :/ | 20:47 |
marun | I guess the switch to the python native mysql client never happened | 20:47 |
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marun | rkukura: I fought hard against the idea of 'retry on lock wait timeout' but its ended up that we probably need it. | 20:48 |
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HenryG | haleyb: For the current patch we should make sure it doesn't break DVR mode with IP_VERSION=4. Then we can follow up with IPv6 support for DVR mode. Does that sound OK? | 20:49 |
rkukura | marun: I think the new mysql client is available, but the old one is still the default. | 20:50 |
haleyb | HenryG: yes, that sounds fine. This was with 4+6/6+4 | 20:50 |
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haleyb | And I know DVR has IPv6 on the backlog, I had just forgotten my default config had dvr-enabled | 20:51 |
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marun | kevinbenton: I don't see how you're going to have a good unit test for this | 20:52 |
kevinbenton | marun: i don’t think i’ve ever heard you say a unit test in neutron was good ;-) | 20:52 |
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marun | kevinbenton: that may well be true | 20:52 |
HenryG | haleyb: Thanks. devstack still defaults to IP_VERSION=4 so only bleeding-edge people like you will be temporarily inconvenienced. ;) | 20:52 |
marun | so abused! | 20:52 |
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openstackgerrit | Kevin Benton proposed a change to openstack/neutron: ML2: move L3 cleanup out of network transaction https://review.openstack.org/124975 | 20:54 |
kevinbenton | marun, armax, rkukura: ^^ just does exactly the steps the bug report had to reproduce | 20:54 |
haleyb | HenryG: right, but DVR might be more bleeding edge than IPv6 :) | 20:54 |
rkukura | kevinbenton: will look ASAP | 20:55 |
marun | kevinbenton: does that test reproduce the problem without the fix applied? | 20:56 |
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kevinbenton | deadlocks if you move the process back inside | 20:56 |
kevinbenton | marun: yes | 20:56 |
marun | kevinbenton: really? | 20:56 |
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marun | kevinbenton: what am I missing? | 20:56 |
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kevinbenton | marun: it’s just a semaphore deadlock. has nothing to do with the db | 20:56 |
marun | so the l3 call tries to acquire the same semaphore? | 20:57 |
marun | cripes | 20:57 |
kevinbenton | marun: semaphore acquired by that method, then calls process_l3_delete which calls core plugin delete_port | 20:57 |
kevinbenton | core plugin delete_port needs that semaphore | 20:57 |
marun | that semaphore is braindead | 20:57 |
marun | that's a serious antipattern to serialize things like this :( | 20:58 |
openstackgerrit | A change was merged to openstack/neutron: Imported Translations from Transifex https://review.openstack.org/124955 | 20:58 |
marun | so, fix looks good. | 20:58 |
marun | underlying code, not so great | 20:58 |
kevinbenton | marun: yes, this is still crap we are carrying because of the sql library | 20:59 |
rkukura | marun: We need to finish eliminating the semaphore and the with_lockmode(“update”) calls during Kilo. | 20:59 |
kevinbenton | rkukura: +100, especially since with_lockmode(“update”) doesn’t even do anything on galera clusters | 20:59 |
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rkukura | marun: The semaphores on host-local, and the locking doesn’t really work with clustered DBs | 20:59 |
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rkukura | marun, kevinbenton: We should probably even be setting the isolation level to avoid implicit locking in the DB, and retrying if needed based on the commit results. | 21:01 |
kevinbenton | rkukura, marun, armax: i need to step away for a few. any quick changes you want me to make to that fix? | 21:01 |
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armax | kevinbenton: no, you are dismiseed | 21:02 |
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armax | *dismissed | 21:02 |
rkukura | kevinbenton: looks good to me! | 21:02 |
kevinbenton | thanks! | 21:02 |
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marun | kevinbenton: lgtm, waiting on jenkins to confirm | 21:04 |
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rkukura | kevinbenton, marun, armax: Now that things like self.network() don’t delete the resources, should we still be using them as contextmanagers? | 21:05 |
marun | rkukura: you can, we still need to go through and rewrite | 21:06 |
rkukura | marun: Right - it still just seems wrong to use the resource outside the with clause. | 21:06 |
marun | rkukura: It would be best if reviewers could ask that new code not use that pattern though | 21:06 |
rkukura | marun: Do we have alternative functions to use instead? | 21:07 |
marun | rkukura: -1 then :) | 21:07 |
kevinbenton | marun: i would like to finish my helper functions | 21:07 |
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kevinbenton | marun: before we encourage not doing it | 21:07 |
kevinbenton | https://review.openstack.org/#/c/122560/ | 21:08 |
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marun | kevinbenton: ugh | 21:10 |
marun | kevinbenton: so nasty that we're doing that kind of testing in the unit tests to begin with | 21:10 |
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JayJ | Does anyone have a good reference to configure mixed flat and private network with neutron? The link is what I want to configure but I cannot seem to find the installation and configuration reference: http://docs.openstack.org/trunk/install-guide/install/apt-debian/content/section_use-cases-mixed.html | 21:13 |
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openstackgerrit | Sylvain Afchain proposed a change to openstack/neutron: Apply Floating NAT only on the external interface https://review.openstack.org/125203 | 21:23 |
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sdague | mikal: you here as well | 21:35 |
mikal | Yep | 21:36 |
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sdague | arosen-home1: yeh, so all fails for that bug are definitely neutron configs | 21:36 |
sdague | the urls are too long to share | 21:36 |
arosen-home1 | sdague: k good data point thanks. | 21:37 |
sdague | http://goo.gl/QRGMhn - then click build_name on the left | 21:37 |
mikal | What else is different with those runs? | 21:37 |
sdague | then click score | 21:37 |
mikal | Are they the only ones using config drive or anything like that? | 21:37 |
lifeless | neutron shold be the only ones using metadata | 21:37 |
lifeless | because neutrons metadata proxy needs testing | 21:38 |
mikal | Huh | 21:38 |
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mikal | Reading Tony's patch... I wonder if a failure to fsync() during the reboot would cause corruption too? | 21:38 |
sdague | I don't know the details of all the neutron configs | 21:38 |
arosen-home1 | right the metadata proxy runs on the postgres tests | 21:39 |
sdague | it seems like it's across all of them | 21:39 |
sdague | so it's regardless | 21:39 |
arosen-home1 | one thing i noticed from the q-metalogs after the resize the instance never hit the metadata proxy again. | 21:39 |
arosen-home1 | if you reboot the instance it should query for metadata on boot | 21:39 |
arosen-home1 | so it seems like the instance hadn't come up fully | 21:40 |
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* arosen-home1 let me get the data to prove that. | 21:40 | |
sdague | arosen-home1: on success runs, did it hit the md server again? | 21:40 |
* markmcclain has dinner reservations.. will read scrollback later | 21:40 | |
sdague | remember, this is cirros cloud init | 21:41 |
sdague | so I don't know what it caches | 21:41 |
sdague | I need to go start an oven thing, I'll be back in 20 minutes | 21:41 |
mikal | Sure | 21:42 |
sdague | just looking at some other logs, confirmed that we're passing these tests on nova network runs | 21:42 |
mikal | I want to pick Tony's brain when we wakes up as well | 21:42 |
mikal | Which should be in the next 30 minutes | 21:42 |
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sdague | (just wanted to make sure that we weren't only running this test on neutron) | 21:42 |
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openstackgerrit | Rossella Sblendido proposed a change to openstack/neutron: Functional test IPAM DB operation https://review.openstack.org/124136 | 21:49 |
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arosen-home1 | sdague: I lied... the instance does hit the metadata server when it comes back up though the test still fails. | 21:59 |
arosen-home1 | 2014-09-25 16:36:58.607 23696 INFO eventlet.wsgi.server [req-2695eb5f-5327-47f4-a541-29fb0abf8493 None] 10.100.0.2,<local> - - [25/Sep/2014 16:36:58] "GET /2009-04-04/meta-data/placement/availability-zone HTTP/1.1" 200 119 0.045631 | 21:59 |
arosen-home1 | 2014-09-25 16:37:28.402 23696 INFO eventlet.wsgi.server [req-2695eb5f-5327-47f4-a541-29fb0abf8493 None] 10.100.0.2,<local> - - [25/Sep/2014 16:37:28] "GET /2009-04-04/meta-data/placement/availability-zone HTTP/1.1" 200 119 0.035326 | 21:59 |
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arosen-home1 | ~30 seconds after the rebuild command it comes back up again and makes the same quries | 21:59 |
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sdague | arosen-home1: so that means that the guest is probably fine | 22:08 |
sdague | and that the qemu bug is unrelated | 22:08 |
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sdague | arosen-home1: which fail run are yuo looking at? | 22:09 |
sdague | so that I can look at the same thing | 22:09 |
arosen-home1 | http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/logs | 22:09 |
arosen-home1 | also seems to get the same size ssh-key info back so the keys should be in the host too: http://paste.openstack.org/show/117292/ | 22:10 |
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openstackgerrit | Rossella Sblendido proposed a change to openstack/neutron: Functional test IPAM DB operation https://review.openstack.org/124136 | 22:15 |
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sdague | arosen-home1: yeh, so everything in that log seems to indicate that the guest is up | 22:16 |
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sdague | the console includes printing out the ip addresses | 22:17 |
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sdague | arosen-home1: so why do we have 3 different tables here with the same source ip - http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/console.html.gz#_2014-09-25_16_55_37_691 | 22:20 |
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arosen-home1 | the ips are the same but the macs are different. I believe tempest uses the same cidr and multiple tests are running at once? | 22:21 |
sdague | there are no packets in 2 of those | 22:22 |
sdague | that seems suspicious to me, no? | 22:22 |
arosen-home1 | mac fa:16:3e:db:06:4b instance: 4e54a968-22e5-46f0-a8c1-323ab57ce5f7 | 22:22 |
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arosen-home1 | 1 261 21428 RETURN all -- * * 10.100.0.2 0.0.0.0/0 MAC FA:16:3E:DB:06:4B | 22:22 |
arosen-home1 | http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/console.html.gz#_2014-09-25_16_55_37_692 | 22:23 |
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sdague | ok, but how does - http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/console.html.gz#_2014-09-25_16_55_37_003 determine which 10.100.0.2 that applies to | 22:24 |
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sdague | I am exposing my lack of ovs knowledge, but at least maybe I can be educated about the interaction between ovs and the nat tables that build floating ips | 22:26 |
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arosen-home1 | sdague: eee I think you might be right. Perhaps the l3 agent isn't cleaning up that ip correctly which is why the incoming request though the l3 agent isn't making it to the instance | 22:28 |
arosen-home1 | but the instance is still able to query the metadata agent. | 22:28 |
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arosen-home1 | hrm maybe not though sorry still digging. | 22:30 |
arosen-home1 | sorry give me few.. | 22:30 |
sdague | yeh, but that's outbound | 22:30 |
sdague | so we actually had a very similar issue in security groups in nova-network because of how synchronization was happening | 22:31 |
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arosen-home1 | sdague: it will know the right 10.100.0.2 address to nat to because these iptables rule are inside a network-namespace and it has an interface that connects to ovs which puts this namespace on the right network (this way it gets to the right 10.100.0.2) | 22:33 |
sdague | arosen-home1: how do we see that ? | 22:33 |
sdague | arosen-home1: basically how do I know in those rules which one is referencing ns(qrouter-11c201c8-3183-416e-bf6f-b9fcd471fb02) | 22:34 |
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arosen-home1 | sdague: so if we look in that namespace: http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/console.html.gz#_2014-09-25_16_55_36_996 | 22:36 |
arosen-home1 | the interface qr-b2e0fd8a-7b will be the default gw has address 10.100.0.1 in that name space | 22:37 |
arosen-home1 | if we look at the q-agt log we can see this is put on network_tag 30 | 22:37 |
arosen-home1 | http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/logs/screen-q-agt.txt.gz#_2014-09-25_16_36_43_111 | 22:37 |
arosen-home1 | Let me track down the vm and make sure that's on 30 as well. | 22:37 |
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arosen-home1 | http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/logs/screen-q-agt.txt.gz#_2014-09-25_16_36_37_861 | 22:41 |
arosen-home1 | yup | 22:41 |
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sdague | so I'm still suspicious of the other routes there | 22:43 |
sdague | so do we know what tags are on those? | 22:43 |
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arosen-home1 | sdague: sorry these? http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/console.html.gz#_2014-09-25_16_55_37_691 | 22:46 |
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sdague | yeh | 22:47 |
sdague | they seem suspicious if nothing else | 22:47 |
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openstackgerrit | Kevin Benton proposed a change to openstack/neutron: Batch ports from security groups RPC handler https://review.openstack.org/124478 | 22:54 |
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sdague | arosen-home1: so I don't see where the rule for FA:16:3E:7C:A2:5B is inserted | 22:55 |
sdague | I see it first show up in an iptables-save | 22:55 |
sdague | but is there no debug when we create those rules? | 22:55 |
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arosen-home1 | it would be in the q-agnt logs | 22:56 |
sdague | arosen-home1: where would it be | 22:56 |
arosen-home1 | one sec trying to find it. | 22:56 |
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arosen-home1 | http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/logs/screen-q-agt.txt.gz#_2014-09-25_16_36_41_579 | 22:58 |
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sdague | arosen-home1: yeh, so that's a save | 22:59 |
sdague | but where do we do the insert? | 23:00 |
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mikal | Ok, so hi | 23:04 |
mikal | tonyb: meet neutron | 23:04 |
mikal | neutron, meet tonyb | 23:04 |
mikal | sdague: tonyb is the author of that qemu patch for reference | 23:04 |
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tonyb | ruh roh "that qemu patch" | 23:04 |
mikal | tonyb: so, to get you up to speed, we've been discussing https://bugs.launchpad.net/neutron/+bug/1323658 this morning | 23:04 |
mikal | tonyb: the symptoms are interesting -- sometimes a resize or reboot of an instance with libvirt results in the instance never becoming network accessible again | 23:05 |
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mikal | tonyb: we originally thought it was a neutron bug | 23:05 |
mikal | tonyb: but I am starting to think it might be a qemu disk corruption thing? | 23:05 |
mikal | tonyb: so I think step one might be to see if there are any places in nova we should be doing the fsync() thing like you did in https://review.openstack.org/#/c/123957/ | 23:06 |
tonyb | "never becoming network accessible again" could be disk corruption. I guess | 23:06 |
sdague | mikal: it's not disk corruption | 23:06 |
sdague | the guest is fine | 23:06 |
mikal | sdague: I thought we decided the instance never booted up again? | 23:07 |
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* mikal missed that bit in the summary for tonyb | 23:07 | |
sdague | read scrollback | 23:07 |
mikal | Ahhh, ok | 23:07 |
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sdague | arosen: ok, so neutron builds all it's firewalls by doing a giant iptables-save command? | 23:08 |
tonyb | skimming the bug I can't see a standout it will reproduce easily with $x | 23:08 |
tonyb | do we have a good repro case? | 23:09 |
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tonyb | sdague: eeek iptables-save is a hack (ask rusty ;P) | 23:09 |
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arosen-home1 | sdague: yea :/ | 23:10 |
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arosen-home1 | sdague: i'm going to push a quick test patch to see if we can still reproduce this failure if there is no security group on the port instead of one with rules that allow us to log in | 23:11 |
sdague | so realistically, looking at this code, which is very close to the same code in nova, my current hypothesis is the left over nat rules are a culprit | 23:12 |
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sdague | which might be a kernel bug | 23:13 |
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sdague | but I still think the fact that we're bleeding out nat rules is suspicious | 23:13 |
arosen-home1 | i wonder why we are only seeing this on the rebuild test though ? | 23:13 |
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* arosen-home1 resize | 23:13 | |
sdague | well, we only dump on fail | 23:13 |
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sdague | it's not just the resize test that breaks like this | 23:13 |
sdague | start_stop does as well | 23:13 |
arosen-home1 | sdague: how do we explain the fact that networking was working before the instance is stopped or resized thoguh? | 23:14 |
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arosen-home1 | sdague: the floatingip 172.24.4.70 is only ever allocated once as well | 23:18 |
arosen-home1 | http://logs.openstack.org/31/122931/2/check/check-tempest-dsvm-neutron-pg-2/b540280/logs/screen-q-vpn.txt.gz#_2014-09-25_16_36_44_680 | 23:18 |
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sdague | arosen-home1: so I don't know, but I still don't like those extra chains hanging around | 23:22 |
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arosen-home1 | sdague: actually looking at the tempest tests for nova it looks like it never tests connectivity just that the instance went active https://github.com/openstack/tempest/blob/master/tempest/scenario/test_server_advanced_ops.py#L63 | 23:31 |
arosen-home1 | the instances go ACTIVE when using neutron as well. | 23:32 |
sdague | arosen-home1: that's not the failing test | 23:33 |
sdague | https://github.com/openstack/tempest/blob/master/tempest/scenario/test_network_advanced_server_ops.py | 23:33 |
sdague | you are looking at the wrong tests | 23:33 |
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arosen-home1 | sdague: right, though this test only runs with tempest if you are using neutron is what i'm saying. | 23:36 |
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arosen-home1 | we don't test that if using nova-network that we can ping/ssh the instance resize/confirm ping/ssh | 23:36 |
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tonyb | so I'm trying to come up to speed on this I'm sure that's of great comfort to you all. | 23:38 |
arosen-home1 | tonyb: cool, let me know if there is anything i can help out with. | 23:39 |
* tonyb goes to play with his local devstack to see if he can reproduce it. | 23:39 | |
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arosen-home1 | mtreinish: do you know off hand if any of the tempest tests that run with nova network confirm network connectivity? | 23:44 |
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mtreinish | arosen-home1: some of the other scenario tests do | 23:47 |
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mtreinish | arosen-home1: like the volume one for example ssh's into the guest to write things to the volume | 23:48 |
sdague | yeh, it's hard to work backwards from here - http://logs.openstack.org/04/124104/2/check/check-tempest-dsvm-full/9cae273/logs/tempest.txt.gz | 23:48 |
arosen-home1 | mtreinish: ah i see thanks. | 23:48 |
sdague | but there are about 27 instances of 'Connected (version' | 23:48 |
sdague | which is paramiko | 23:48 |
sdague | we definitely connect to servers on the nova network side | 23:49 |
sdague | not every server that's ever brought up | 23:49 |
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kevinbenton | rkukura: you around? | 23:50 |
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mtreinish | sdague: yeah it's a small % (last time I looked we boot ~170 guests) but we definitely do it with n-net | 23:51 |
mtreinish | although I can't say we do it after a resize or stop/start | 23:51 |
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kevinbenton | armax, rkukura: jenkins has passed on https://review.openstack.org/#/c/124975/ | 23:51 |
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