Friday, 2015-04-03

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kevinbentonamuller, armax: two routers connected to different external networks!00:07
kevinbentonis the use case00:07
kevinbentonthat everyone is clamoring for00:07
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armaxkevinbenton: care to elaboratE?00:08
kevinbentonif you have multiple external networks00:08
armaxHenryG: ping00:08
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kevinbentonand want some servers on one network to use one external network and the rest to use the other00:09
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armaxyou mean have multiple routers connect to it?00:09
armaxthem00:09
kevinbentonyeah00:09
kevinbentoni was giving a potential use case for the scenario you guys were talking about00:09
armaxisn’t the workflow to do something like that different, though?00:09
armaxdon’t we set the gateway on the router in that case?00:10
kevinbentona router can only have one gateway00:10
kevinbentonif some of your network members need one external network and some need a different one, you will need multiple routers00:10
armaxright00:11
kevinbentonit's a pretty strange corner case though that could be better supported by allowed multiple external networks on the router00:11
kevinbentonwith PBR to control choice of external network00:12
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ijw_Can you even change the network the external interface uses?00:15
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HenryGarmax: pong00:19
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amullerijw_: teah00:21
amulleryeah*00:21
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amullerijw_: even horizon supports it, when you set a router as a gateway you can select which external network it should plug in to00:26
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ijw_amuller: huh.  Never felt the need, but I assumed with floating IPs and NAT and the like there would be just one external network (not least considering the --router:external flag)00:27
amullerijw_: generally multiple external networks work00:29
amulleralso multiple subnets on an external network00:29
ijw_Yeah, well, I presume multiple ipv4 subnets work as they do on tenant networks - allocation would seem to be exactly the same between the two00:31
amulleryep00:31
amullerIPAM is still very basic00:32
amullergotta go, have a great long weekend everyone00:33
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armaxHenryG: question on00:33
armaxhttps://review.openstack.org/#/c/169641/00:33
openstackgerritSwaminathan Vasudevan proposed openstack/neutron: Fix dynamic arp populate error for dvr routers  https://review.openstack.org/17032300:34
HenryGarmax: what is the question?00:34
armaxbesides the stuff inline do you think the patch is ready to merge?00:34
armaxHenryG: if so, maybe you and I can whip it up and merge it without waiting the timezone lag00:35
HenryGarmax: yes, it's only the naming convention00:35
armaxHenryG: let’s do it00:36
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HenryGarmax: let me ping hanzhang and wait a few minutes00:36
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armaxhanzhang: is he around?00:36
HenryGarmax: that is what I am checking :)00:37
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armaxHenryG: okeydokey00:37
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HenryGarmax: I am setting a timer on 30 minutes, if no response then we go ahead. OK?00:39
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armax30 mins from now? My clock already says 26 mins00:40
armax:)00:40
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HenryGarmax: what's up with the timeouts in the functional test for https://review.openstack.org/167357 ?00:54
armaxjust talking to marun about this00:55
armaxmarun: ^^^00:55
armaxthis is showing up since a couple of days00:55
armaxhttp://logstash.openstack.org/#eyJzZWFyY2giOiJtZXNzYWdlOlwiZXZlbnRsZXQudGltZW91dC5UaW1lb3V0OiA2MCBzZWNvbmRzXCIiLCJmaWVsZHMiOltdLCJvZmZzZXQiOjAsInRpbWVmcmFtZSI6IjYwNDgwMCIsImdyYXBobW9kZSI6ImNvdW50IiwidGltZSI6eyJ1c2VyX2ludGVydmFsIjowfSwic3RhbXAiOjE0MjgwMjI0NjU0OTcsIm1vZGUiOiIiLCJhbmFseXplX2ZpZWxkIjoiIn0=00:55
openstackgerritshihanzhang proposed openstack/neutron: Add index for port  https://review.openstack.org/16964100:55
marunI wonder why we're timing out at 60s instead of 9000:55
marundid that change and I didn't notice?00:55
marunshould be 9000:56
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marunAt the least we should track down where the 60s timeout is being set00:56
marunhttps://github.com/openstack/neutron/blob/master/tox.ini#L4600:56
armaxmarun: agreed00:56
armaxI guess that’s something to figure out00:56
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HenryGarmax: hanzhang has posted a new patch for https://review.openstack.org/16964100:57
armaxHenryG: yup I saw00:57
marunarg00:57
marunmonitor is setting a local timeout00:57
marunhttps://github.com/openstack/neutron/blob/master/neutron/tests/functional/agent/linux/test_ovsdb_monitor.py#L9800:57
armaxHenryG: you go ahead00:57
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armaxHenryG: I’ll follow you shortly00:57
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HenryGok00:58
armaxHenryG: filing a but about this00:58
armaxthanks00:58
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HenryGarmax: filing a what about what??00:58
armaxfunctional job failure00:58
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marunarmax: I wonder what merged to start causing this...01:01
marunarmax: starting a monitor shouldn't be a problem, but maybe the native testing is complicating things01:01
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armaxlogstash is not unveiling any obvious culprit01:01
armaxmarun: I am still poking around01:01
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armaxjohn’s change has been the first instance of the failure01:02
armaxbut it’s the one where the failure happened the most01:03
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armaxmarun: I wonder if https://review.openstack.org/#/c/168513/ might help us mask the issue01:05
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armaxmarun: what do you reckon?01:05
marunarmax: worth a try01:05
armaxthe way I get this is that we skip vsctl tests altogether01:05
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marunarmax: methinks we might need to consider userspace instances of ovs before long01:06
marunarmax: per-worker01:06
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armaxmarun: agreed01:06
armaxmarun: amuller is not online…I am gonna try and rebase the change and repost it for review01:06
marunarmax: sounds good01:06
armaxmarun: ok01:06
armaxmarun: I shan’t be long, you’re gonna stick around?01:07
marunarmax: sure01:07
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armaxoki01:07
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armaxmarun: looking at the merge conflict…I may need more time ;)01:12
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armaxlooking at https://review.openstack.org/#/c/165866/01:12
openstackgerritMaru Newby proposed openstack/neutron: Fix functional test using local timeout value  https://review.openstack.org/17032701:12
marunarmax: no guarantee but that might help too ^01:12
armaxmarun: looking01:12
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marunarmax: arg, fail01:13
armaxmarun: what do you mean?01:13
openstackgerritMaru Newby proposed openstack/neutron: Fix functional test using local timeout value  https://review.openstack.org/17032701:14
marunthat should do it01:14
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openstackgerritJiaqiang Liu proposed openstack/neutron-specs: Implements : Blueprint user-centric-naas  https://review.openstack.org/16920701:15
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openstackgerritArmando Migliaccio proposed openstack/neutron: Fix functional test using local timeout value  https://review.openstack.org/17032701:18
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openstackgerritBrian Haley proposed openstack/neutron: Add ipset element and hashsize tunables  https://review.openstack.org/17032801:21
openstackgerritKyle Mestery proposed openstack/neutron: Add API tests for subnet-create with subnetpool  https://review.openstack.org/17020801:22
openstackgerritMaru Newby proposed openstack/neutron: Merge unit test modules targeting the same module  https://review.openstack.org/17032901:23
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openstackgerritMaru Newby proposed openstack/neutron: Merge unit test modules targeting the same module  https://review.openstack.org/17032901:54
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openstackgerritshihanzhang proposed openstack/neutron: Fix 'router_gateway' port status can't be updated  https://review.openstack.org/15150102:27
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openstackgerritAndrew Boik proposed openstack/neutron: Support multiple IPv6 prefixes on internal router ports  https://review.openstack.org/15636002:54
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openstackgerritAndrew Boik proposed openstack/neutron: Support multiple IPv6 prefixes on internal router ports  https://review.openstack.org/15636002:57
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openstackgerritMerged openstack/neutron: Add API tests for Neutron DVR extension  https://review.openstack.org/16735703:07
openstackgerritMerged openstack/neutron: Fix functional test using local timeout value  https://review.openstack.org/17032703:07
HenryGhanzhang: hi03:12
hanzhangyes03:12
HenryGhanzhang: can you take a look at bug #143981703:12
openstackbug 1439817 in neutron "IP set full error in kernel log" [High,In progress] https://launchpad.net/bugs/1439817 - Assigned to Brian Haley (brian-haley)03:12
hanzhanglet me see03:13
HenryGhanzhang: haleyb proposed fix, please review:  https://review.openstack.org/17032803:13
HenryGhanzhang: I am signing off for the night. Please comment on the bug and the review if you have any ideas.03:14
hanzhangok03:15
HenryGthanks03:15
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openstackgerritAndrew Boik proposed openstack/neutron: Support multiple IPv6 prefixes on internal router ports  https://review.openstack.org/15636003:19
openstackgerritAndrew Boik proposed openstack/neutron: Support multiple IPv6 prefixes on internal router ports  https://review.openstack.org/15636003:19
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openstackgerritMerged openstack/neutron: Add index for port  https://review.openstack.org/16964103:32
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hanzhangHenryG: I have commit comments for patch 17032803:55
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hanzhangwho can help review this patch:https://review.openstack.org/#/c/151501/04:05
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openstackgerritwatanabe isao proposed openstack/neutron: Make sure OVS restarts when Exception occurred  https://review.openstack.org/16997505:24
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openstackgerritOpenStack Proposal Bot proposed openstack/neutron: Imported Translations from Transifex  https://review.openstack.org/16963506:14
willemgfHi, We try to setup a vxlan-tunnel with neutron which seems not to work. Following design has been made: 1 trunked bond-interface which should be used for the vxlan-tunnel. 1 trunked bond-interface for public network (PUB) and 1 trunked bond-interface for internal management network (OOB). Both the PUB and OOB should go over the vxlan-tunnel. Is this possible?06:16
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openstackgerritGrzegorz Grasza (xek) proposed openstack/python-neutronclient: Update neutronclient shell to use shared arguments from Session  https://review.openstack.org/17037007:46
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willemgfHi all, Is there anywhere some good howto-ducumentation available on how to setup vxlan-tunnel with neutron?08:12
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openstackgerritMerged openstack/neutron: Imported Translations from Transifex  https://review.openstack.org/16963508:32
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openstackgerritdql proposed openstack/neutron: fix DHCP port changed when dhcp-agent restart  https://review.openstack.org/16252208:48
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openstackgerritAdrien Cunin proposed openstack/neutron: Use "regionOne" case in metadata agent conf  https://review.openstack.org/16922209:56
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openstackgerritElena Ezhova proposed openstack/neutron: [WIP]: Add handling of SIGHUP  https://review.openstack.org/16173210:03
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tvbhi can anyone help me? My instance is not receiving the correct nameservers i've configured in the neutron subnet10:33
tvbsubnet-show https://gist.github.com/tvb/26f69441f07eaa7873e710:34
tvblease file on server https://gist.github.com/tvb/f2cee76f0b1536fce89f10:34
tvbI have tried to remove the lease file, rebooted the instance, renewed the dhcp lease etc but nothing seems to help10:35
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tvbanyone?10:39
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openstackgerritAnkit Agrawal proposed openstack/neutron: Remove use of contextlib.nested  https://review.openstack.org/16767711:15
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openstackgerritPaul Michali proposed openstack/neutron-vpnaas: VPNaaS: Refactoring to use callback mechanism  https://review.openstack.org/16522611:31
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ihrachyshkaHenryG, hey!11:39
HenryGihrachyshka: Hi!11:40
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ihrachyshkaHenryG, you may have tracked recent prefix delegation discussions better... which platforms do we need to have dibbler packaged? I am about to request branches for Fedora, and I wonder whether we need it for epel711:40
HenryGihrachyshka: not sure I am afraid. But I can ask. Is there a list of "openstack supported platforms"?11:43
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ihrachyshkaHenryG, I don't think so. We will obviously run Kilo on RHEL7 for RHEL-OSP7, but we will need to import dibbler in its repos anyway since we don't rely on epel7 repo for the product. that said, people willing to run stock openstack distro (like RDO) on centos may need it...11:45
ihrachyshkaok, probably it's better add that additional repo than miss it, I guess. the price is not that high to have it there.11:45
HenryGihrachyshka: So prefix delegation has been punted to Liberty11:45
ihrachyshkaHenryG, ah, yeah, I should have said RHEL-OSP8.11:46
ihrachyshkaanyway, still centos7/RDO will probably need it11:46
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HenryGihrachyshka: and one possibility now is a neutron native client11:47
ihrachyshkaHenryG, meh, I would not take that path...11:48
ihrachyshkawe are good at integration but not actual protocol level work I guess11:48
ihrachyshkabut maybe I'm wrong and everyone is happy to crunch packets and fill in headers in python11:48
ihrachyshkathat will be another new can of CVE worms and support hell11:49
HenryGihrachyshka: you can follow/comment on https://review.openstack.org/16138111:50
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openstackgerritCedric Brandily proposed openstack/neutron: Adds base in-tree functional testing of the dhcp agent (OVS)  https://review.openstack.org/13683412:16
openstackgerritElena Ezhova proposed openstack/neutron: [WIP]: Add handling of SIGHUP  https://review.openstack.org/16173212:17
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openstackgerritCedric Brandily proposed openstack/neutron: Allow metadata proxy running with nobody user/group  https://review.openstack.org/16511512:30
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openstackgerritCedric Brandily proposed openstack/neutron: Adds base in-tree functional testing of the dhcp agent (OVS)  https://review.openstack.org/13683412:43
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openstackgerritRossella Sblendido proposed openstack/neutron: L2 agent RPC add new RPC calls  https://review.openstack.org/14743513:55
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openstackgerritRossella Sblendido proposed openstack/neutron: Add devices to update in RPC call security_groups_provider_updated  https://review.openstack.org/14823514:05
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openstackgerritRossella Sblendido proposed openstack/neutron: Add get_events to OVSDB monitor  https://review.openstack.org/16180614:06
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openstackgerritPaul Michali proposed openstack/neutron-vpnaas: VPNaaS: Refactoring to use callback mechanism  https://review.openstack.org/16522614:15
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openstackgerritRossella Sblendido proposed openstack/neutron: Add state_or_sec_group_updated flag in port_update  https://review.openstack.org/15522314:58
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prometheanfireshould specs normally cover plugins?15:04
prometheanfireif so, I think https://blueprints.launchpad.net/neutron/+spec/mtu-selection-and-advertisement missed the linuxbridge piece15:04
prometheanfirehttps://bugs.launchpad.net/neutron/+bug/134878815:04
openstackLaunchpad bug 1348788 in neutron "network_device_mtu is not applied to VMs, only to agents" [Low,Confirmed]15:04
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prometheanfirebasicly, can I work on that bug to get it into kilo or not? :D15:04
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openstackgerritZengfa Gao proposed openstack/neutron: Add API tests for subnet-create with subnetpool  https://review.openstack.org/17020815:18
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openstackgerritBrian Haley proposed openstack/neutron: Add ipset element and hashsize tunables  https://review.openstack.org/17032815:21
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openstackgerritBrian Haley proposed openstack/neutron: Add ipset element and hashsize tunables  https://review.openstack.org/17032815:52
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kirHi all: does anybody know how to deal with idempotent_id in neutron?15:57
openstackgerritPaul Michali proposed openstack/neutron: Refactoring cleanup for L3 agent callbacks  https://review.openstack.org/16987615:58
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openstackgerritZengfa Gao proposed openstack/neutron: Add API tests for subnet-create with subnetpool  https://review.openstack.org/17020816:37
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openstackgerritMerged openstack/neutron: IPv6 SLAAC subnet create should update ports on net  https://review.openstack.org/16062216:46
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openstackgerritMaru Newby proposed openstack/neutron: Remove orphaned nuage unit test module  https://review.openstack.org/17057017:28
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marunHenryG, kevinbenton, armax, mestery: something trivial to merge, without an __init__.py in the path it can't even run.17:33
marun^17:33
mesterymarun: Done!17:34
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openstackgerritMaru Newby proposed openstack/neutron: Merge unit test modules targeting the same module  https://review.openstack.org/17032918:17
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openstackgerritSwaminathan Vasudevan proposed openstack/neutron: Adds DVR functional test for multi-external networks  https://review.openstack.org/16357318:18
marunotherwiseguy: hi18:19
marunopenstackgerrit: we've seen quite a few functional test failures this week, generally timeouts around ovs testing18:19
marunotherwiseguy: oops ^18:20
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marunotherwiseguy: Any thoughts as to whether we're assured of sufficient isolation across tests? Or whether we should simply increase the timeouts?18:20
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mesterycarl_baldwin: QA has pointed me at some recent 500 error failures, and the look to be coming from the subnet pool stuff:18:43
mesteryhttp://logs.openstack.org/06/159106/7/gate/gate-tempest-dsvm-neutron-full/7c12b0f/logs/screen-q-svc.txt.gz#_2015-04-03_16_25_55_19518:43
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openstackgerritBrian Haley proposed openstack/neutron: Add ipset element and hashsize tunables  https://review.openstack.org/17032818:43
mesterycarl_baldwin: ^^^ Looks like a Lock Wait timeout :(18:43
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pc_mamotoki: hi18:55
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mesteryHenryG: The failures above I pointed carl_baldwin at actually look like V6 failures, looking now, but any thoughts?19:05
HenryGmestery: looking ...19:06
openstackgerritSwaminathan Vasudevan proposed openstack/neutron: Adds DVR functional test for multi-external networks  https://review.openstack.org/16357319:06
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pc_mmestery: hi19:11
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prometheanfireabout the 'incomplete' spec completion19:15
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prometheanfirewould fixing bug https://bugs.launchpad.net/neutron/+bug/1348788 (as it's related to https://blueprints.launchpad.net/neutron/+spec/mtu-selection-and-advertisement)19:16
openstackLaunchpad bug 1348788 in neutron "network_device_mtu is not applied to VMs, only to agents" [Low,Confirmed]19:16
HenryGmestery: carl_baldwin: Yes, it's a DHCPv6 test case. It's failing in _create_subnet_from_implicit_pool() which was added yesterday via the last subnet pool patch.19:17
mesteryHenryG: So that confirms my thinking too, thanks.19:17
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armaxHenryG: is there a logstash/bug for this issue?19:24
HenryGarmax: Not that I know of. mestery do you know?19:24
mesteryNope, not that I'm aware of yet. /cc mtreinish19:24
mtreinisharmax: not yet19:25
mtreinishsdague just pointed it out before he called it a day19:25
armaxmtreinish: I’ll look into it, thanks19:25
armaxmtreinish: we’ll nip in the buds before it’s starting to hurt19:26
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pc_mmestery: hi19:32
mesterypc_m: yo!19:33
pc_mmestery: Happy Friday19:33
mesterypc_m: :P19:33
pc_mmestery: Have you heard of XFRM w.r.t. kernels?19:33
mesterypc_m: Yes, in passing, I'd need to refresh my memory a bit19:33
pc_mmestery: Talking to someone on strongswan IRC...19:34
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pc_mmestery: They had mentioned that there is an issue with all *Swan daemons that are running under a namespace (like we do).19:35
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mesterypc_m: Yikes! Sounds dire.19:35
pc_mmestery: Said it was due to kernerl and XFRM and namespaces not working.19:35
* pc_m Have no idea what XFRM is19:35
mspreitzDoes anybody here know whether Neutron's LBaaS can do IPv6 on the front side while doing IPv4 on the back?19:35
mesterymspreitz: I'd ask in #openstack-lbaas19:36
pc_mmestery: The indicate was that one could setup a tunnel, but traffic won't pass. However, it seems to be working for both OpenSwan and StrongSwan.19:36
mspreitzOh, I did not know it had its own channel!19:36
mspreitzThanks19:36
pc_mmestery: Wondering if it is version specific issue, and maybe (guessing) that Ubuntu 14.04+ have a kernel that supports it?19:37
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mesterypc_m: Seems very likely yes, on with armax now, FYI19:40
pc_mmestery: He would know about this?19:41
mesterypc_m: No, unrelated to this, something else, give me a few minutes19:42
* pc_m trying to find out whether or not this is an issue to be concerned with19:42
pc_mmestery: Ah gotcha19:42
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mesteryarmax: So per our discussion, the DHCPv6 issue is only seen 3 times according to logstash. /cc HenryG19:59
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armaxmestery: apparently kevinbenton is eager to look into it20:00
mesteryMOAR KEVINBENTON!20:01
mesterylol20:01
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armaxbut I’ll do that too20:01
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armaxand bring the big guns, aka kevinbenton, later if I need them20:01
kevinbentonarmax: is that a fat joke?20:03
armaxkevinbenton: no20:03
armaxI am dead serious20:03
kevinbentonscary20:03
armaxyou’ve proven to be able to see through the matrix20:03
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kevinbentonarmax: that's because my copy of the dvd has a pretty bad scratch20:05
kevinbentonarmax: if yours was scratched you could see through it too20:05
armaxyeah yeah20:05
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mesterylol20:06
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openstackgerritMerged openstack/neutron: Remove orphaned nuage unit test module  https://review.openstack.org/17057020:18
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openstackgerritKevin Benton proposed openstack/neutron: Only call get_engine().pool.dispose if _FACADE  https://review.openstack.org/16536420:30
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HenryGmarun: ping20:39
marunHenryG: pong20:39
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HenryGmarun: Do all api test cases need to have an idempotent_id?20:40
marunHenryG: As far as I know, yes.20:40
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HenryGmarun: Are there docs on it? Following the code is not very helpful (or it is still just a stub?)20:44
HenryGI guess I should ask the tempest folks20:44
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tiswansoHenryG:  re: idempotent_id-- I had asked tempest folks a few weeks back20:48
marunHenryG: I think qa is still working on documenting it20:48
marunHenryG: they have a check script that validates uniqueness within tempest20:48
marunHenryG: we'll need something similar20:48
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tiswansoon IRC... the answer I got was to add the test to a file in a tempest project and run "tox -euuidgen" and it would add the decorator20:49
marunHenryG: But cross-repo uniqueness will be hard to verify20:49
marunHenryG, tiswanso: I guess we'll need our own version of that script then20:50
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marunHenryG: or work on moving it to tempest-lib20:50
tiswansoyep20:50
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HenryGmarun: tiswanso: thanks. I found the BP: https://blueprints.launchpad.net/tempest/+spec/test-uuid20:52
HenryGlacks a spec and documentation20:52
tiswansomarun: script is tempest/tools/check_uuid.py  (tox runs with --fix option)20:52
marunI'm not entirely sure of the value of this for all tests20:52
marunI get the point for stuff that needs validation with refstack20:53
marunBut otherwise, effectively making tests a stable deliverable doesn't strike me as worthwhile20:53
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openstackgerritDane LeBlanc proposed openstack/neutron: delete_port: Don't do l3plugin calls with db-access locked  https://review.openstack.org/17061121:06
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openstackgerritPaul Michali proposed openstack/neutron-vpnaas: VPNaaS Remove dependency on Neutron for unit test  https://review.openstack.org/16900821:33
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ZZelle_mestery, hi21:41
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openstackgerritMerged openstack/neutron: Make L3 agent honor periodic_interval setting  https://review.openstack.org/14771021:43
openstackgerritMerged openstack/python-neutronclient: 'neutron port-create' missing help info for --binding:vnic-type  https://review.openstack.org/16944321:46
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openstackgerritMerged openstack/neutron: Support multiple IPv6 prefixes on internal router ports  https://review.openstack.org/15636021:49
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armaxHenryG: ping22:58
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HenryGarmax: pong22:59
armaxHenryG: was looking at https://bugs.launchpad.net/neutron/+bug/144019222:59
openstackLaunchpad bug 1440192 in neutron "DB Deadlock: Lock wait timeout exceeded; try restarting transaction') 'INSERT INTO ipallocations" [Undecided,In progress] - Assigned to Dane LeBlanc (leblancd)22:59
armaxit looks an awful lot like https://bugs.launchpad.net/neutron/+bug/144018322:59
openstackLaunchpad bug 1440183 in neutron "DBDeadlock on subnet allocation" [High,Confirmed]22:59
armaxHenryG: do you by any chance talk to Dane?23:00
HenryGarmax: yes I do23:00
HenryGlet's see if I can get him on here23:01
armaxHenryG: ok, I was wondering if we’re experiencing the same failure mode23:01
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HenryGAt first glance it sure looks like it23:01
armaxHenryG: but what’s weird is that I don’t see the DVR job fail in the gate23:02
armaxwith that failure mode23:02
armaxso I wonder where dane had seen that23:02
armaxthe report seems to hint a local setup but surely we should see that in the gate too23:03
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HenryGarmax: dane_leblanc is here now23:03
armaxHi dane_leblanc23:04
dane_leblancarmax: Hi!23:04
dane_leblancCould use some help on DB locks23:04
armaxdane_leblanc: yes, we’re seeing the locks on teh same tests regardless of DVR23:04
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armaxdane_leblanc: see https://bugs.launchpad.net/neutron/+bug/144018323:05
openstackLaunchpad bug 1440183 in neutron "DBDeadlock on subnet allocation" [High,Confirmed]23:05
armaxdane_leblanc: it looks like you’re running the same tests?23:05
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armaxdo you see failures on just those two tests?23:07
dane_leblancarmax: I'm seeing it with tempest.api.network.test_dhcp_ipv6.NetworksTestDHCPv6.test_dhcpv6_64_subnets23:07
armaxdane_leblanc: that one only?23:07
dane_leblancarmax: No, I run 2 tests at the same time23:07
armaxright, but what about the other NetworksTestDHCPv6 tests?23:07
armaxthey could fail too right?23:07
dane_leblanctempest.api.network.test_dhcp_ipv6.NetworksTestDHCPv6.test_dhcp_stateful_router[id-e98f65db-68f4-4330-9fea-abd8c5192d4d]23:07
armaxwhat if you run the entire lot?23:08
armaxNetworksTestDHCPv623:08
dane_leblancarmax: I believe that any test that does delete of a port while another test is creating a subnet will have this problem23:08
armaxdane_leblanc: yes23:09
dane_leblancarmax: I can try the entire lot, but I know for sure that running just those 2 tests will cause failures in 1 out of 6 runs23:09
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armaxdane_leblanc: it does appera we see that regardless of DVR though23:09
armaxdane_leblanc: did you see the failure occur without DVR at all?23:09
dane_leblancarmax: I haven't tried without DVR, I can try that.23:10
dane_leblancThe area of trouble seems to be the ML2 delete_port method...23:10
dane_leblancwhere it's locking db-access...23:10
dane_leblancand then makes l3plugin calls to clean up DVR namespaces, and another l3plugin call to clear up floating IP associations23:11
armaxdane_leblanc: yes, I still need to clean that area of the code23:11
dane_leblancarmax: I think the l3plugin calls relinquish control, and then another test running concurrently might try to do some L2 database stuff23:12
dane_leblancarmax: (with the db-access lock still on)23:12
armaxdane_leblanc: let me look into that, I am sure how viable your change is right now23:13
armaxdane_leblanc: we’re trading some DB errors for others23:13
dane_leblancarmax: My change fails, it isn't the right way to fix it23:13
dane_leblancarmax: Yes, agreed.23:13
armaxdane_leblanc: and we’d want to go deeper and ensure that we address the db locks with or without dvr23:13
armaxdane_leblanc: I was going to dive in the code23:13
armaxit seems that we identified the  culprit23:13
dane_leblancarmax: Yes, I think we need to consider floating IP situations as well, not just DVR23:14
armaxdane_leblanc: one favor I’d like to ask you is23:14
dane_leblancarmax: Sure23:14
armaxdane_leblanc: if you tried and revert https://review.openstack.org/#/c/157597/ can you confirm that the issue is gone?23:14
armaxdane_leblanc: I mean, in your local setup23:15
armaxyou can back up prior to that change and see if the issue disapper23:15
armaxdane_leblanc: at least that would confirm the area where we’d need to look for trouble23:15
dane_leblancarmax: Sure, I'll try that23:15
dane_leblancarmax: I'll also try without DVR23:15
armaxdane_leblanc: that would be good23:16
armaxdane_leblanc: the other favor I’d ask you is, once we identified a potential fix, then if you can verify that the issue is indeed gone in your setup23:16
armaxdane_leblanc: but for that we’d need to wait23:16
armax:)23:16
dane_leblancarmax: Sure! Glad someone else is looking at this, I was a bit stumped on how to solve this.23:16
armaxdane_leblanc: yeah..we’ll nuke it23:17
armaxdane_leblanc: for now I am tempted to mark one bug duplicate of the otherr23:17
dane_leblancarmax: This showed up with a recently merged patch of mine... didn't want that to get reverted.23:17
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armaxdane_leblanc: which one?23:17
dane_leblancarmax: Feel free to use your bug as the reference (dup mine?)23:18
dane_leblancLooking up number23:18
armaxdane_leblanc: you and I reported the bug 1 hour aparat23:18
openstackbug 1 in Ubuntu Malaysia LoCo Team "Microsoft has a majority market share" [Critical,In progress] https://launchpad.net/bugs/1 - Assigned to MFauzilkamil Zainuddin (apogee)23:18
armaxapart23:18
armax144018323:18
armaxbug #144018323:18
openstackbug 1440183 in neutron "DBDeadlock on subnet allocation" [High,Confirmed] https://launchpad.net/bugs/144018323:18
armaxyours is 144019223:18
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dane_leblancFirefox froze on me23:19
armaxdane_leblanc: you mean https://review.openstack.org/#/c/160622/?23:20
dane_leblancarmax: Yes, that's the one.23:20
armaxI wonder if the culprit is indeed that one :)23:21
dane_leblancarmax: I believe that that commit (160622) only exposed the issue23:21
armaxdane_leblanc: well yes23:21
armaxdane_leblanc: but this is with every bug!23:21
armaxdane_leblanc: there’s always something latent23:22
armaxdane_leblanc: so I’d try to back out yours and see if the issue disappera23:22
armaxdisappear23:22
dane_leblancarmax: I'm fairly confident the problems will disappear.23:23
armaxwithout your change?23:23
dane_leblancarmax: Yes, without my change. Although the problems are still there, just less likely to show up as often.23:23
armaxdane_leblanc: agreed23:24
HenryGDoes mysql have a debugging mode for this sort of thing?23:24
armaxdane_leblanc: that’s a common pattern23:24
dane_leblancarmax: Right.23:24
armaxdane_leblanc: we have seen a bunch of changes merged and that exposed races23:24
armaxdane_leblanc: let me look at your patch to see if I can unveil what’s going on23:25
dane_leblancarmax: I think the necessary ingredient that my patch adds is that it does subnet create and that does a port table access23:25
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armaxdane_leblanc: let me look into this some more23:25
armaxdane_leblanc: are you going to be around?23:25
dane_leblancarmax: For a while.23:26
armaxdane_leblanc: a typical approach for these sorts of issues is to revert the culprit, get the gate back to health and rework a more robust change23:26
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dane_leblancarmax: Sure.23:26
armaxdane_leblanc: but since the failure rate is not skyrocketing now, I think we can afford to wait just a little longer23:26
armaxat least until we learn a bit more about what’s going on23:27
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dane_leblancarmax: I'm looking forward to your suggestions on what can be done in the ML2 delete_port.23:28
armaxdane_leblanc: yes, bear with me…it could be that we leave delete_port unaffected23:28
armaxdane_leblanc: you’d be amazed by the types of fixes that are done to circumvent the db deadlock :)23:29
armaxdane_leblanc: if you’re curious there was one that kevinbenton fixed not so long ago: https://review.openstack.org/#/c/160036/23:30
dane_leblancarmax: I had been looking at that while investigating this today.23:30
armaxyou mean kevinbenton’s change?23:30
dane_leblancarmax: Yes, kevinbenton's change23:31
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dane_leblancarmax: I take that back, I think I was looking at an earlier kevinbenton change23:32
openstackgerritMerged openstack/neutron: Add API tests for subnet-create with subnetpool  https://review.openstack.org/17020823:34
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armaxdane_leblanc: what if you simply commented out line 1253 in neutron/db/db_base_plugin_v2.py23:35
armaxdane_leblanc: I know that it’s not the right fix, but I wonder if that can give us a clue that it is the part of the code that makes us go over the cliff23:35
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dane_leblancarmax: That's pretty much the same as reverting my entire patch23:36
dane_leblancarmax: Meaning, I'm guessing it will make the problem be less frequent23:37
armaxdane_leblanc: I suppose you’re right23:37
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dane_leblancarmax: I think that the 2 tests that I run to reproduce the problem highlight the issue. One test is doing a port delete to clean up, and this involves the db-access lock. The second test is creating subnets, and because of my patch, the creating subnets is doing a port database access, but database is locked, so wham: deadlock.23:41
armaxdane_leblanc: agreed…but there must be something that exarcebate this behavior23:41
armaxdane_leblanc: by looking at your code it does look like you’re making multiple db queries to the IPAllocation table within the same transaction23:42
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armaxdane_leblanc: that might just make the transaction long enough to expose the contention23:42
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openstackgerritMaru Newby proposed openstack/neutron: Prepare for unit test reorg  https://review.openstack.org/17032923:43
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dane_leblancarmax: My thinking is that the critical section is in the ML2 delete_port, not in the subnet_create where my change is.23:44
armaxdane_leblanc: it might as well be but disentangling that code is a massive undertaking23:45
armaxdane_leblanc: it is indeed true that the issue is triggered by a delete_port23:47
armaxhttp://logs.openstack.org/26/165226/11/gate/gate-tempest-dsvm-neutron-full/db4d28d/logs/screen-q-svc.txt.gz?#_2015-04-03_20_05_29_31823:47
armaxdane_leblanc: btw this is without DVR23:47
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dane_leblancarmax: Right. I would expect this would happen even without DVR because of the call to l3plugin's floating IP dissasociation23:50
armaxbut that port is a dhcp port23:50
armaxdane_leblanc: hang on, I take that bac23:51
armaxk23:51
armaxoh yeah23:52
armaxsee Calling delete_port for 85109322-a549-439d-9845-bb5e943468b1 owned by network:dhcp delete_port23:52
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dane_leblancarmax: But the call to l3plugin.disassociate_floatingips is made regardless of port type, right?23:53
armaxdane_leblanc: um…dunno I’d need to verify but I am surprised if it did23:54
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dane_leblancarmax: There don't appear to be any device_owner checks for the call to disassociate_floating_ips.23:57
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armaxdane_leblanc: it looks like we don’t even get there23:57
armaxdane_leblanc: actually23:57
armaxwhat I  see is this:23:57
armaxhttp://logs.openstack.org/26/165226/11/gate/gate-tempest-dsvm-neutron-full/db4d28d/logs/screen-q-svc.txt.gz?#_2015-04-03_20_06_20_16523:57
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armaxso we go past the disassociation23:58
armaxand yield at line 125923:59
armaxof neutron/plugins/ml2/plugin.py23:59
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