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| haleyb | kevinbenton: /sbin/ip is just the linux 'ip foo bar' command, iproute2 package | 00:57 |
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| kevinbenton | haleyb: no, i meant which command wasn't being executed? | 01:04 |
| kevinbenton | haleyb: or which ip command was failing | 01:05 |
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| haleyb | kevinbenton: let me the one i saw was 'ip link set tapXYZ mtu 1450', but just before an 'ip link show tapXYZ' succeeded | 01:07 |
| kevinbenton | haleyb: i did find something strange in the logs. during a reboot the | 01:08 |
| kevinbenton | haleyb: tap device seemed to become invisible to the agent | 01:08 |
| kevinbenton | so i'm guessing it's related | 01:08 |
| * haleyb figured kevinbenton ran macOS so /sbin/ip wasn't common | 01:08 | |
| kevinbenton | to what you observed | 01:08 |
| kevinbenton | haleyb: running macOS but i do all my dev in a linux vm :) | 01:08 |
| haleyb | http://logs.openstack.org/85/462285/6/check/gate-tempest-dsvm-neutron-linuxbridge-ubuntu-xenial/26eb0f2/logs/screen-q-agt.txt.gz#_Jun_12_16_52_57_628171 | 01:09 |
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| haleyb | that's an example, if you look for tapeca376fb-50 | 01:09 |
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| haleyb | 16:52:57.628171 it's there, 16:52:57.704030 it's gone | 01:10 |
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| kevinbenton | haleyb: yeah. see here a tap device just vanishes long enough to abort the plugging process so ip link set up never gets called | 01:10 |
| kevinbenton | haleyb: http://logs.openstack.org/05/470905/4/check/gate-tempest-dsvm-neutron-linuxbridge-ubuntu-xenial/7517ae3/logs/screen-q-agt.txt.gz#_Jun_12_15_36_51_999570 | 01:10 |
| kevinbenton | haleyb: tap8b91cb4b-55 | 01:10 |
| kevinbenton | haleyb: so i think i'm seeing the same thing | 01:10 |
| haleyb | yeah, i just didn't look for 'skipped', but it was in the change you did i believe | 01:11 |
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| kevinbenton | haleyb: i think it just depends on what phase the l2 agent is in when it disappears briefly | 01:12 |
| kevinbenton | haleyb: the problem is that we have a bunch of logic to suppress disappearing interfaces to handle delete races :) | 01:13 |
| haleyb | kevinbenton: and i didn't correlate that failure to what we're seeing in the bug where the cleanup of the network fails, it was just the first thing i noticed in the logs | 01:13 |
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| kevinbenton | haleyb: do you have a link to that bug? | 01:13 |
| haleyb | kevinbenton: i am guilty of that too | 01:13 |
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| haleyb | https://launchpad.net/bugs/1696125 | 01:14 |
| openstack | Launchpad bug 1696125 in OpenStack Compute (nova) "Detach interface failed - Unable to detach from guest transient domain (pike)" [High,Confirmed] - Assigned to Matt Riedemann (mriedem) | 01:14 |
| kevinbenton | haleyb: in the failure i tracked down it manifested as a standard failure to ping | 01:14 |
| haleyb | once the second patch landed this morning i figured we'd get past it but didn't | 01:14 |
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| kevinbenton | haleyb: unfortunately the qemu logging isn't helpful for what it is doing to the tap devices | 01:18 |
| haleyb | no, i couldn't find anything there or libvirt or syslog | 01:18 |
| kevinbenton | haleyb: syslog in my case i did notice this | 01:19 |
| kevinbenton | haleyb: http://logs.openstack.org/05/470905/4/check/gate-tempest-dsvm-neutron-linuxbridge-ubuntu-xenial/7517ae3/logs/syslog.txt.gz#_Jun_12_15_36_51 | 01:19 |
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| kevinbenton | haleyb: that's what made me realize nothing ever set it back to UP | 01:20 |
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| haleyb | that looks like the tap was deleted or something | 01:22 |
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| kevinbenton | haleyb: then this 'timestamps': {'tap8b91cb4b-55': None, 'tap373b0bd7-63': 10, 'tap8dfbc120-71': 469, 'tapda1755d8-a0': 473, 'tapbc5edd44-4a': 11, 'tap00e7af79-b8': 9, 'tapa9012111-9c': 470, 'tap3a050812-e3': 6}, | 01:23 |
| kevinbenton | haleyb: None is what came back for ifindex | 01:24 |
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| kevinbenton | haleyb: maybe it was deleted right then | 01:25 |
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| openstackgerrit | Kevin Benton proposed openstack/neutron master: [wip]: debug attrs on disappearing taps https://review.openstack.org/473623 | 01:29 |
| openstackgerrit | Kevin Benton proposed openstack/neutron master: [do not merge]: retry loop for debugging tap disappearance https://review.openstack.org/473626 | 01:29 |
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| haleyb | kevinbenton: btw, the revert for the TAP change was pushed, https://review.openstack.org/#/c/472365/ or did you want to wait? | 02:00 |
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| kevinbenton | haleyb: oh, i wanted to wait | 02:02 |
| kevinbenton | haleyb: once that revert goes in, we will likely never be able to fix the problem | 02:02 |
| * haleyb didn't push it, let me stop it | 02:02 | |
| kevinbenton | haleyb: unless this is easy to repro locally | 02:02 |
| kevinbenton | haleyb: well just leave it | 02:03 |
| kevinbenton | haleyb: gate is unstable | 02:03 |
| kevinbenton | haleyb: i will just work on my own to fix the issue | 02:03 |
| haleyb | kevinbenton: ok, i'll clear my -workflow | 02:04 |
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| haleyb | kevinbenton: well, it actually failed jenkins that time, but on a pep8 failure | 02:05 |
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| haleyb | but it passed the gate linuxbridge job | 02:06 |
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| openstackgerrit | Vu Cong Tuan proposed openstack/neutron master: Replace assertEqual([], items) with assertEmpty(items) https://review.openstack.org/473663 | 03:07 |
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| openstackgerrit | rajiv proposed openstack/networking-odl master: Moving _make_odl_url method to common utils https://review.openstack.org/473244 | 03:20 |
| openstackgerrit | Kevin Benton proposed openstack/neutron master: Don't log about no notification on GET requests https://review.openstack.org/473668 | 03:20 |
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| reedip | kevinbenton : ping | 03:52 |
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| openstackgerrit | YAMAMOTO Takashi proposed openstack/networking-midonet master: Fix a typo in devref https://review.openstack.org/473681 | 04:33 |
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| openstackgerrit | Hirofumi Ichihara proposed openstack/neutron-lib master: [Do not review] Test patch https://review.openstack.org/473682 | 04:45 |
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| openstackgerrit | Hirofumi Ichihara proposed openstack/neutron master: [Do not review] Test patch https://review.openstack.org/473684 | 04:53 |
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| openstackgerrit | Reedip proposed openstack/networking-midonet master: Migrate Firewall Exceptions https://review.openstack.org/472057 | 04:59 |
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| openstackgerrit | Reedip proposed openstack/networking-midonet master: DO NOT MERGE/REVIEW: tracking for fwaas patch https://review.openstack.org/443416 | 05:01 |
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| openstackgerrit | Kevin Benton proposed openstack/neutron master: Trigger port status DOWN on VIF replug https://review.openstack.org/473685 | 05:02 |
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| openstackgerrit | Reedip proposed openstack/neutron-lib master: DNM : Test Patch to see if fwaas can work without being a known extension https://review.openstack.org/473686 | 05:15 |
| openstackgerrit | Reedip proposed openstack/networking-midonet master: Migrate Firewall Exceptions https://review.openstack.org/472057 | 05:16 |
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| openstackgerrit | Dongcan Ye proposed openstack/neutron master: Fix bug when checking duplicated subnets for router interface https://review.openstack.org/473356 | 05:31 |
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| openstackgerrit | YAMAMOTO Takashi proposed openstack/networking-midonet master: tempest: Update after recent removal of cred manager aliases https://review.openstack.org/473689 | 05:47 |
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| openstackgerrit | Hirofumi Ichihara proposed openstack/neutron master: [Do not review] Test patch https://review.openstack.org/473684 | 06:41 |
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| openstackgerrit | Merged openstack/networking-ovn master: Add network and subnet resources to OVNClient https://review.openstack.org/471317 | 06:56 |
| kevinbenton | reedip: pong | 06:57 |
| openstackgerrit | Merged openstack/networking-ovn master: Add journal and maintenance skeleton https://review.openstack.org/461104 | 06:59 |
| reedip | hi kevinbenton : if you have some time tomorrow ( I guess its late today for you ) , can you please see and provide your reviews for https://launchpad.net/bugs/1491317 ? | 06:59 |
| openstack | Launchpad bug 1491317 in neutron "[RFE] Add TCP/UDP port forwarding extension to L3" [Wishlist,In progress] - Assigned to Reedip (reedip-banerjee) | 06:59 |
| kevinbenton | reedip: ah, it needs to be in Triaged state so we can decide on it in the drivers meeting | 07:00 |
| reedip | kevinbenton : yes, I was hoping that it can be discussed once? | 07:02 |
| kevinbenton | reedip: yep | 07:02 |
| kevinbenton | reedip: we go by bugs in Triaged state | 07:02 |
| reedip | kevinbenton : so should I move it to the triage state ? Or any other points need to be taken care of , before doing the same | 07:03 |
| openstackgerrit | Lujin Luo proposed openstack/neutron master: Integration of IPAllocation https://review.openstack.org/396718 | 07:04 |
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| kevinbenton | reedip: just Triaged | 07:05 |
| reedip | kevinbenton : oh ok , thanks :) | 07:05 |
| kevinbenton | reedip: Triaged + rfe tag means review :) | 07:05 |
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| reedip | kevinbenton : got it :) By the way, the drivers meeting is the same time this week right? | 07:06 |
| kevinbenton | reedip: yep | 07:06 |
| reedip | kevinbenton : ok :) | 07:07 |
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| openstackgerrit | Kevin Benton proposed openstack/neutron master: Trigger port status DOWN on VIF replug https://review.openstack.org/473685 | 07:07 |
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| openstackgerrit | YAMAMOTO Takashi proposed openstack/networking-midonet master: Add TODO comments for task-based API https://review.openstack.org/473711 | 07:09 |
| openstackgerrit | Kevin Benton proposed openstack/neutron master: Trigger port status DOWN on VIF replug https://review.openstack.org/473685 | 07:10 |
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| openstackgerrit | YAMAMOTO Takashi proposed openstack/networking-midonet master: Add TODO comments for task-based API https://review.openstack.org/473711 | 07:23 |
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| openstackgerrit | YAMAMOTO Takashi proposed openstack/networking-midonet master: Add TODO comments for task-based API https://review.openstack.org/473711 | 07:23 |
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| openstackgerrit | Akihiro Motoki proposed openstack/neutron master: Add libffi-dev to bindep.txt https://review.openstack.org/473721 | 07:35 |
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| kevinbenton | amotoki: does that fix pep8 compilation error? | 07:51 |
| amotoki | kevinbenton: yes, temporarily PyNaCL was installed from tarball and this caused the error | 07:51 |
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| amotoki | kevinbenton: at now we already use wheel again so pep8 error has gone. | 07:51 |
| kevinbenton | amotoki: ah ok. so this doesn't need fast merge then | 07:52 |
| amotoki | kevinbenton: right | 07:52 |
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| openstackgerrit | Yushiro FURUKAWA proposed openstack/neutron-fwaas master: FWaaS v2 extension for L2 agent https://review.openstack.org/323971 | 08:26 |
| openstackgerrit | Yushiro FURUKAWA proposed openstack/neutron-fwaas master: Generate default firewall group via project https://review.openstack.org/425769 | 08:26 |
| openstackgerrit | Yushiro FURUKAWA proposed openstack/neutron-fwaas master: [WIP] OVS based l2 Firewall driver for FWaaS v2 https://review.openstack.org/447251 | 08:26 |
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| openstackgerrit | Reedip proposed openstack/networking-midonet master: Migrate Firewall Exceptions https://review.openstack.org/472057 | 08:46 |
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| kevinbenton | yamamoto, amotoki: can you take a look at https://review.openstack.org/#/c/470831/ . I'm working on getting devstack setup to run that to we can switch to wsgi for API component | 08:53 |
| amotoki | kevinbenton: sure | 08:53 |
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| kevinbenton | amotoki: it works locally for me with ML2 so it should be enough to at least get us started | 08:54 |
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| amotoki | am now testing it locally | 08:55 |
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| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: fullstack: add a bare MPLS scenario https://review.openstack.org/473515 | 08:56 |
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| openstackgerrit | Siyi Luo proposed openstack/networking-odl master: Using assertFalse(A) instead of assertEqual(False, A) https://review.openstack.org/473749 | 09:21 |
| openstackgerrit | Kevin Benton proposed openstack/neutron master: Switch to start_all_workers in RPC server https://review.openstack.org/473750 | 09:22 |
| openstackgerrit | Jesse proposed openstack/neutron master: ovsfw: fix allowed_address_pairs MAC issue https://review.openstack.org/473751 | 09:23 |
| openstackgerrit | Merged openstack/neutron master: Mask password when logging request body https://review.openstack.org/473393 | 09:23 |
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| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: fullstack: add a bare MPLS scenario https://review.openstack.org/473515 | 09:46 |
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| openstackgerrit | hujin proposed openstack/neutron master: Fix indent https://review.openstack.org/473769 | 10:03 |
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| reedip | ralonsoh : hey | 10:12 |
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| reedip | ralonsoh : I was trying to fix the translation hints in https://review.openstack.org/#/c/419642/6 . Thats why pep8 is failing | 10:12 |
| ralonsoh | reedip: let me take a look at this | 10:13 |
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| reedip | ralonsoh : not sure about the translation hints | 10:14 |
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| ralonsoh | reedip: ok, this is because "context" was moved to neutron-lib | 10:18 |
| ralonsoh | reedip: from neutron-lib import context | 10:19 |
| ralonsoh | reedip: in neutron.core_extensions.qos | 10:19 |
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| reedip | ralonsoh : ohh kk | 10:24 |
| openstackgerrit | Reedip proposed openstack/neutron master: [WIP] Add network_qos_policy_id to port info https://review.openstack.org/419642 | 10:24 |
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| openstackgerrit | Jesse proposed openstack/neutron master: Fix potential transient switching loop in br-int https://review.openstack.org/473776 | 10:27 |
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| openstackgerrit | hujin proposed openstack/neutron master: Fix indent https://review.openstack.org/473769 | 10:36 |
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| openstackgerrit | Mike Kolesnik proposed openstack/networking-odl master: Create journal dependencies table https://review.openstack.org/453029 | 11:15 |
| openstackgerrit | Mike Kolesnik proposed openstack/networking-odl master: Change journal entry selection to optimistic locking https://review.openstack.org/467060 | 11:15 |
| openstackgerrit | Mike Kolesnik proposed openstack/networking-odl master: Change dependency validation to calculation https://review.openstack.org/453581 | 11:15 |
| openstackgerrit | Kevin Benton proposed openstack/neutron master: API compare-and-swap updates based on revision_number https://review.openstack.org/409577 | 11:17 |
| openstackgerrit | Kevin Benton proposed openstack/neutron master: Stop using nested transactions in OVO get/delete https://review.openstack.org/473786 | 11:17 |
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| openstackgerrit | Kevin Benton proposed openstack/neutron master: Decompose SG RPC API DB methods https://review.openstack.org/410418 | 11:31 |
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| openstackgerrit | Kevin Benton proposed openstack/neutron master: Use push notification for security groups https://review.openstack.org/410422 | 11:36 |
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| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: fullstack: add a bare MPLS scenario https://review.openstack.org/473515 | 11:44 |
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| openstackgerrit | Merged openstack/neutron master: Revert "Use vif_type='tap' for LinuxBridge for consistency" https://review.openstack.org/472365 | 11:45 |
| openstackgerrit | Merged openstack/neutron master: neutron-rpc-server fails with no plugins loaded https://review.openstack.org/470831 | 11:45 |
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| openstackgerrit | OpenStack Proposal Bot proposed openstack/neutron master: Updated from global requirements https://review.openstack.org/472324 | 11:48 |
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| openstackgerrit | Jakub Libosvar proposed openstack/neutron master: dvr: Move normal/output br-int flows to table TRANSIENT https://review.openstack.org/472691 | 11:52 |
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| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: fullstack: add a bare MPLS scenario https://review.openstack.org/473515 | 12:01 |
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| openstackgerrit | Karthik Prasad proposed openstack/networking-odl master: neutron-port-dhcp https://review.openstack.org/465735 | 12:03 |
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| openstackgerrit | Nguyen Phuong An proposed openstack/neutron master: [log]: db models and migration rules https://review.openstack.org/395483 | 12:37 |
| openstackgerrit | Nguyen Phuong An proposed openstack/neutron master: [log]: Add rpc consume for logging extension https://review.openstack.org/468265 | 12:37 |
| openstackgerrit | Nguyen Phuong An proposed openstack/neutron master: [log]: Add validator to logging api https://review.openstack.org/467976 | 12:37 |
| openstackgerrit | Nguyen Phuong An proposed openstack/neutron master: [log]: implement logging plugin https://review.openstack.org/395504 | 12:37 |
| openstackgerrit | Nguyen Phuong An proposed openstack/neutron master: [log]: implement logging agent extension https://review.openstack.org/396104 | 12:37 |
| openstackgerrit | Nguyen Phuong An proposed openstack/neutron master: [log]: add driver manager to LoggingApiPlugin https://review.openstack.org/468309 | 12:37 |
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| openstackgerrit | Jakub Libosvar proposed openstack/neutron master: ovw-fw: Use TRANSIENT table for traffic classification https://review.openstack.org/472692 | 12:46 |
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| openstackgerrit | Merged openstack/neutron master: Set HA network port to DOWN when l3 agent starts https://review.openstack.org/470905 | 12:47 |
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| openstackgerrit | Merged openstack/networking-odl master: Revert "Allowing lock to be applied per operation basis" https://review.openstack.org/473697 | 12:49 |
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| openstackgerrit | OpenStack Proposal Bot proposed openstack/neutron master: Updated from global requirements https://review.openstack.org/472324 | 12:53 |
| baoli | sean_k_mooney: ping | 12:55 |
| openstackgerrit | Josh Hershberg proposed openstack/networking-odl master: Utilty for determining ODL neutron features https://review.openstack.org/465462 | 12:56 |
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| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: fullstack: add a bare MPLS scenario https://review.openstack.org/473515 | 13:02 |
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| openstackgerrit | Cuong Nguyen proposed openstack/neutron master: Make conntrack driver configurable https://review.openstack.org/470910 | 13:12 |
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| openstackgerrit | Josh Hershberg proposed openstack/networking-odl master: Retrieve and process port status updates from ODL https://review.openstack.org/465463 | 13:14 |
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| openstackgerrit | Achuth Maniyedath proposed openstack/networking-odl master: Spec for blueprint neutron-port-dhcp https://review.openstack.org/453160 | 13:20 |
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| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: fullstack: add a bare MPLS scenario https://review.openstack.org/473515 | 13:36 |
| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: bagpipe-bgp, bare MPLS: ARP trigger on specific interface https://review.openstack.org/473849 | 13:36 |
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| mnaser | has there been any scale issues related to neutron-dhcp-agent when building a large # of vms? | 13:37 |
| mnaser | the size of the dhcp_agent.<agent> queue explodes on large number of new VM creations at once and the neutron-dhcp-agent is just chipping through reload_allocations one-by-one | 13:38 |
| mnaser | and the only way to avoid breaking things is let it go through the queue (while now all port attachments to that network are timing out) | 13:39 |
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| openstackgerrit | Josh Hershberg proposed openstack/networking-odl master: Run OdlPortStatusUpdate only in one worker https://review.openstack.org/467645 | 13:49 |
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| openstackgerrit | Ihar Hrachyshka proposed openstack/neutron master: Integration of Allocation/Endpoints OVO https://review.openstack.org/367810 | 13:55 |
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| openstackgerrit | Jakub Libosvar proposed openstack/neutron master: ovw-fw: Use TRANSIENT table for traffic classification https://review.openstack.org/472692 | 14:00 |
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| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: fullstack: add a bare MPLS scenario https://review.openstack.org/473515 | 14:02 |
| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: bagpipe-bgp, bare MPLS: ARP trigger on specific interface https://review.openstack.org/473849 | 14:02 |
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| openstackgerrit | Thomas Morin proposed openstack/neutron-lib master: bgpvpn-routes-control extension https://review.openstack.org/467277 | 14:26 |
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| ihrachys | jlibosva, anything pressing to discuss on CI meeting today? | 14:43 |
| jlibosva | ihrachys: not pressing from my side - I still haven't sent the summary email about py3-func tests being categorized | 14:44 |
| ihrachys | ok, I am overwhelmed by stuff, so I would like to cancel | 14:45 |
| jlibosva | ihrachys: fine by me | 14:45 |
| ihrachys | ok, cancelled then | 14:46 |
| ihrachys | thanks | 14:46 |
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| mnaser | i've been trying to troubleshoot and resolve this issue where the dhcp_agent queue cannot keep up (seems to ack at 1.4/s for reload_allocations) and gets far more data sent to it | 15:00 |
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| mnaser | and im curious if it would be safe to purge it? | 15:00 |
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| openstackgerrit | boden proposed openstack/neutron-lib master: rehome qos service DriverBase class https://review.openstack.org/470426 | 15:06 |
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| davidsha | slaweq_: ping | 15:14 |
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| openstackgerrit | Reedip proposed openstack/networking-midonet master: Migrate Firewall Exceptions https://review.openstack.org/472057 | 15:17 |
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| openstackgerrit | boden proposed openstack/neutron-fwaas master: use plugin constants from neutron-lib https://review.openstack.org/473878 | 15:20 |
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| openstackgerrit | Merged openstack/networking-odl master: Using assertFalse(A) instead of assertEqual(False, A) https://review.openstack.org/473749 | 15:40 |
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| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: fullstack: add a bare MPLS scenario https://review.openstack.org/473515 | 16:07 |
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| openstackgerrit | Jakub Libosvar proposed openstack/neutron master: ovsfw: Fix overlapping MAC addresses on integration bridge https://review.openstack.org/385085 | 16:13 |
| openstackgerrit | Jakub Libosvar proposed openstack/neutron master: Introduce trusted ports to firewall driver API https://review.openstack.org/473899 | 16:13 |
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| openstackgerrit | Sean Dague proposed openstack/python-neutronclient master: remove explicit global_request_id handling from session client https://review.openstack.org/473903 | 16:18 |
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| mlavalle | asettle: ping | 16:36 |
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| openstackgerrit | Merged openstack/neutron master: Don't log about no notification on GET requests https://review.openstack.org/473668 | 16:54 |
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| openstackgerrit | Swaminathan Vasudevan proposed openstack/neutron master: DVR: Fix DVR Router snat ports and gateway ports host binding issue https://review.openstack.org/470063 | 17:40 |
| haleyb_ | ihrachys: can you take a look at https://review.openstack.org/#/c/469301/ and the newton one? wayward backports | 17:40 |
| ihrachys | checking | 17:42 |
| ihrachys | haleyb_, ok for ocata. as for newton, the patch that introduced the regression hasn't landed. so shouldn't we rebase your patch on top of it? | 17:45 |
| openstackgerrit | Achuth Maniyedath proposed openstack/networking-odl master: Spec for blueprint neutron-port-dhcp https://review.openstack.org/453160 | 17:45 |
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| openstackgerrit | boden proposed openstack/neutron master: use core resource attribute constants from neutron-lib https://review.openstack.org/467348 | 17:50 |
| haleyb_ | ihrachys: you mean https://review.openstack.org/#/c/460920/ ? it's been waiting for the default route change, i didn't want to introduce the regression then fix it. I can rebase that on-top of this one | 17:50 |
| ihrachys | I am merely saying that your patch refers to the other patch as fixing a regression that the latter introduced, so it would be technically not correct to land them in another order? or you say your backport is valid without Jakub's? | 17:52 |
| haleyb_ | my backport should be valid without Jakub's, but his shouldn't be merged without mine. I realize that makes stable/newton different from master since the order changed | 17:54 |
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| haleyb_ | ihrachys: i can rebase his to be on-top, it should apply cleanly and pass jenkins else something is broken | 17:56 |
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| ihrachys | haleyb_, ok ok, just want to make sure we don't miss either pieces :) | 17:57 |
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| ihrachys | and that yours makes sense without jakub's | 17:57 |
| ihrachys | I am fine either way, no need to rebase | 17:57 |
| * haleyb_ already rebased | 17:58 | |
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| ihrachys | ok :) | 17:59 |
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| openstackgerrit | Manjeet Singh Bhatia proposed openstack/networking-odl master: Experimental Test new netvirt https://review.openstack.org/471885 | 18:34 |
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| mriedem | ihrachys: finally got a hit on my debug patch | 18:49 |
| mriedem | http://logs.openstack.org/94/471494/2/check/gate-tempest-dsvm-neutron-linuxbridge-ubuntu-xenial/e0332b9/console.html#_2017-06-12_22_35_52_329418 | 18:49 |
| mriedem | digging into logs now | 18:50 |
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| openstackgerrit | Ihar Hrachyshka proposed openstack/neutron master: Add libffi-dev to bindep.txt https://review.openstack.org/473721 | 19:26 |
| haleyb_ | kevinbenton: did you mention something about ebtables yesterday? I'm just seeing a failure in a functional test failing to run it because it can't get the lock | 19:27 |
| openstackgerrit | Ihar Hrachyshka proposed openstack/neutron master: Integrate Security Groups OVO https://review.openstack.org/284738 | 19:27 |
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| mriedem | and of course the device we're looking for to be detached is still showing up in the guest | 19:30 |
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| boden | hi kevinbenton: if you could please put https://review.openstack.org/#/c/459782/ on your queue; we could use your input on the latest discussion topic there… no big rush AFAIK | 19:37 |
| openstackgerrit | Merged openstack/neutron master: Switch to start_all_workers in RPC server https://review.openstack.org/473750 | 19:37 |
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| openstackgerrit | Merged openstack/neutron master: Remove unused class 'QoSPolicyDefaultNotFound' https://review.openstack.org/473209 | 19:55 |
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| mriedem | ihrachys: kevinbenton: i think i might have sorted out the linuxbridge device detach retry timeout thing | 20:00 |
| mriedem | rah rah libvirtd debug log digging | 20:01 |
| openstackgerrit | Slawek Kaplonski proposed openstack/neutron master: Add support for ingress bandwidth limit rules in ovs agent https://review.openstack.org/457816 | 20:03 |
| ihrachys | mriedem, patches to look at? | 20:03 |
| mriedem | nothing yet, seems to be a bug in the oslo retry decorator code | 20:04 |
| mriedem | it takes ~5 seconds for libvirt do delete the device from the guest | 20:04 |
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| mriedem | nova is timing out at 2 seconds | 20:04 |
| mriedem | but it's supposed to be 15 seconds i think | 20:04 |
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| mriedem | https://github.com/openstack/nova/blob/a2dd78580ec5bcc7a73924cde46a53afe2c09348/nova/virt/libvirt/guest.py#L374 | 20:05 |
| mriedem | melwitt: didn't you report a bug against the oslo loopingcall.RetryDecorator stuff? | 20:06 |
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| mriedem | http://git.openstack.org/cgit/openstack/oslo.service/tree/oslo_service/loopingcall.py#n345 | 20:08 |
| mriedem | unless i'm drunk, that's supposed to loop 7 times, with 2 second sleep between each retry | 20:08 |
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| mriedem | oh nvm, | 20:14 |
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| mriedem | it's taking 5 MINUTES | 20:14 |
| mriedem | to detach | 20:14 |
| mriedem | yeah, | 20:16 |
| mriedem | so | 20:16 |
| mriedem | it takes ~5 minutes for the device to be removed from the guest | 20:17 |
| mriedem | nova times out somewhere between 1-2 minutes | 20:17 |
| mriedem | https://bugs.launchpad.net/nova/+bug/1696125/comments/16 has the details | 20:17 |
| openstack | Launchpad bug 1696125 in OpenStack Compute (nova) "Detach interface failed - Unable to detach from guest transient domain (pike)" [High,Confirmed] - Assigned to Matt Riedemann (mriedem) | 20:17 |
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| openstackgerrit | Manjeet Singh Bhatia proposed openstack/networking-odl master: Experimental Test new netvirt https://review.openstack.org/471885 | 20:19 |
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| ihrachys | mriedem, why so long | 20:20 |
| mriedem | ihrachys: no idea, i'm asking sgordon in -nova | 20:21 |
| ihrachys | I see | 20:21 |
| ihrachys | well another libvirt wtf | 20:21 |
| mriedem | or qemu, or whatever | 20:21 |
| mriedem | but, | 20:21 |
| ihrachys | nimby | 20:21 |
| ihrachys | :p | 20:21 |
| mriedem | seems you guys all work at the correct company for sorting this one out :) | 20:21 |
| ihrachys | you bet... it takes ages, and after days of dumping qemu cores, all you want is leave the project :p | 20:22 |
| hjensas | mriedem: I think device detach requires guest cooperation via ACPI as well. | 20:22 |
| openstackgerrit | Thomas Morin proposed openstack/networking-bagpipe master: fullstack: add a bare MPLS scenario https://review.openstack.org/473515 | 20:23 |
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| ihrachys | mriedem, something to think about is, why does vif_type revert seem to help? https://review.openstack.org/#/c/472365/ | 20:24 |
| mriedem | ihrachys: oh i see that merged | 20:24 |
| * ihrachys wonders if we saw the issue since it landed | 20:24 | |
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| ihrachys | the last hit in logstash is for a job that started 2 mins before the revert merged | 20:26 |
| ihrachys | what a coincidence :p | 20:26 |
| ihrachys | kevinbenton, ^ | 20:26 |
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| mriedem | yeah, so my only guess is the tap stuff makes it external somehow which takes longer | 20:27 |
| mriedem | vif_type='tap' i mean | 20:27 |
| ihrachys | it's around 7h of logs since that time, so I bet it helped | 20:28 |
| mriedem | which log is the neutron l2 agent? | 20:28 |
| mriedem | screen-q-agt? | 20:28 |
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| openstackgerrit | fumihiko kakuma proposed openstack/neutron-dynamic-routing master: Use "docker network" in scenario test https://review.openstack.org/464100 | 20:29 |
| mriedem | this is where it's attached http://logs.openstack.org/94/471494/2/check/gate-tempest-dsvm-neutron-linuxbridge-ubuntu-xenial/e0332b9/logs/screen-q-agt.txt.gz#_Jun_12_22_19_30_156456 | 20:29 |
| ihrachys | yes it's q-agt | 20:30 |
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| openstackgerrit | Manjeet Singh Bhatia proposed openstack/neutron master: OVO for NetworkDhcpAgentBinding https://review.openstack.org/370452 | 20:32 |
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| mriedem | ok https://bugs.launchpad.net/nova/+bug/1696125/comments/17 | 20:34 |
| openstack | Launchpad bug 1696125 in OpenStack Compute (nova) "Detach interface failed - Unable to detach from guest transient domain (pike)" [High,Confirmed] - Assigned to Matt Riedemann (mriedem) | 20:34 |
| mriedem | q-agt logs seem normal | 20:34 |
| mriedem | the attach and detach times align with the nova logs | 20:34 |
| mriedem | there is a weird 5 minute gap here | 20:36 |
| mriedem | http://logs.openstack.org/94/471494/2/check/gate-tempest-dsvm-neutron-linuxbridge-ubuntu-xenial/e0332b9/logs/screen-q-agt.txt.gz#_Jun_12_22_24_33_893133 | 20:36 |
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| mriedem | i wonder if there is some lock or periodic task or something not cleaning up? | 20:37 |
| slaweq | ihrachys: kevinbenton: hello, please take a look at https://review.openstack.org/#/c/457816/ in meantime. Thx in advance | 20:41 |
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| mriedem | kevinbenton: i re-opened https://bugs.launchpad.net/neutron/+bug/1105488 since the neutron change was reverted | 20:42 |
| openstack | Launchpad bug 1105488 in OpenStack Compute (nova) "linuxbridge agent needs ability to use pre-configured physical network bridges (nova-related)" [Wishlist,Confirmed] | 20:42 |
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| kevinbenton | mriedem: so is the verdict that vif_type=tap is just not safe to use? | 21:35 |
| kevinbenton | mriedem: we can workaround it in linuxbridge, but that means backends like Calico will be unstable because they depend on vif_type=tap | 21:36 |
| kevinbenton | ihrachys: hey, can you take a look at https://review.openstack.org/#/c/473786/ | 21:36 |
| ihrachys | +2 | 21:38 |
| mriedem | kevinbenton: sgordon was going to ask some internal red hat people to take a look at my debug notes in the bug | 21:39 |
| mriedem | and see if they can tell why this would take so long on the libvirt/qemu side | 21:39 |
| mriedem | i'm not networking guy so i don't know what happens under the covers in qemu land with tap devices | 21:39 |
| mriedem | er vif type tap interfaces | 21:39 |
| kevinbenton | mriedem: well that's the frustrating thing | 21:39 |
| kevinbenton | mriedem: tap type should be easier than bridges | 21:39 |
| kevinbenton | :) | 21:39 |
| mriedem | https://libvirt.org/formatdomain.html#elementsNICSEthernet | 21:40 |
| mriedem | is about all i can find for docs | 21:40 |
| kevinbenton | but the 'ethernet' type has a bunch of additional script invoking crap that is probably the culprit | 21:40 |
| mriedem | right, | 21:41 |
| mriedem | that's what i'm thinking, | 21:41 |
| mriedem | and is also why i think there is a code comment from danpb in the nova code about ethernet devices that says they are not recommended by the libvirt dev community | 21:41 |
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| mriedem | https://github.com/openstack/nova/blob/master/nova/virt/libvirt/designer.py#L56 | 21:41 |
| mriedem | https://www.redhat.com/archives/libvir-list/2011-May/msg00113.html | 21:42 |
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| kevinbenton | i just want what the ovs or bridge type does | 21:43 |
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| kevinbenton | without the second step of plugging in | 21:43 |
| kevinbenton | is that too much to ask? :P | 21:43 |
| mriedem | you're speaking another language | 21:44 |
| mriedem | to me anyway | 21:44 |
| kevinbenton | mriedem: both ovs and bridge create a tap device | 21:44 |
| kevinbenton | mriedem: but then they plug it into a specified bridge | 21:44 |
| kevinbenton | mriedem: I just want the logic to create the tap device | 21:44 |
| kevinbenton | and then stop there | 21:44 |
| kevinbenton | but apparently ethernet does that and then additional bonus material | 21:44 |
| mriedem | so, just use the ovs or bridge types :) | 21:45 |
| mriedem | idk, maybe sean-k-mooney knows more about htis | 21:45 |
| mriedem | otherwise we'd have to find danpb in the morning at some point | 21:45 |
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| kevinbenton | mriedem: no rush. just let me know if you hear back about issues with 'ethernet' because if so I want to warn calico folks | 21:47 |
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| kevinbenton | mriedem: worst case for neutron side is that I have to relay additional information to nova in vif_details for selecting custom bridges | 21:48 |
| kevinbenton | (well for os-vif to use) | 21:49 |
| mriedem | you should probably subscribe to https://bugs.launchpad.net/nova/+bug/1696125/ then | 21:49 |
| openstack | Launchpad bug 1696125 in OpenStack Compute (nova) "Detach interface failed - timeout waiting to detach tap device in linuxbridge job (pike)" [High,Confirmed] - Assigned to Matt Riedemann (mriedem) | 21:49 |
| mriedem | in case someone from red hat comments | 21:49 |
| kevinbenton | mriedem: ack | 21:50 |
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| kevinbenton | haleyb_: no, it wasn't actually a bug | 21:50 |
| kevinbenton | haleyb_: but i was looking at ebtables calls | 21:50 |
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| kevinbenton | haleyb_: we probably need some retry logic around the ebtables call to catch lock acquisition errors | 21:52 |
| kevinbenton | haleyb_: wasn't a high priority since in a normal system neutron should be the only ebtables caller now | 21:52 |
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| haleyb_ | kevinbenton: i now see lock failures in two patches, and if it fails it's an unknown error according to the ebtables source code - i.e. not EACCESS or EAGAIN | 21:53 |
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| kevinbenton | haleyb_: so a normal concurrent lock failure is supposed to be one of those two errors? | 21:55 |
| haleyb_ | kevinbenton: i was curious why the code was loading 'ebtables -L' without a lock, then operating on it | 21:55 |
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| haleyb_ | if (ret == -1 && errno != (EAGAIN || EACCES)) | 21:55 |
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| haleyb_ | or it couldn't create /run | 21:56 |
| haleyb_ | but it doesn't tell you which one failed :( | 21:56 |
| kevinbenton | haleyb_: where is it calling -L without a lock? | 21:56 |
| kevinbenton | haleyb_: that is probably the issue | 21:56 |
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| kevinbenton | haleyb_: doesn't it say stuff is unpredictable if you have a concurrent call without the --concurrent flag? | 21:57 |
| haleyb_ | kevinbenton: setup_arp_spoofing_protection() isn't holding the neutron ebtables lock, but running -L | 21:58 |
| haleyb_ | i am re-writing the code a bit | 21:58 |
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| kevinbenton | haleyb_: oh | 21:58 |
| kevinbenton | haleyb_: but that still calls ebtables with --concurrent | 21:58 |
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| haleyb_ | yes, and it might not be the problem, but seems we can at least protect against ourselves | 21:59 |
| kevinbenton | haleyb_: yes | 21:59 |
| kevinbenton | haleyb_: that locking does need to be redone i see | 21:59 |
| kevinbenton | haleyb_: because current_rules can become out of date | 21:59 |
| haleyb_ | i thought we were racing with something outside neutron which --concurrent will help with since it should block until it gets the lock | 22:00 |
| kevinbenton | haleyb_: i think i added the current_rules passing around after the initial locking was in place | 22:00 |
| haleyb_ | kevinbenton: np, i'll get something out before dinner, might need to file a bug | 22:01 |
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| sean-k-mooney | kevinbenton: mriedem was there something i could help with? | 22:05 |
| sean-k-mooney | kevinbenton: mriedem i see you were talking about the ethernet type in libvirt? | 22:06 |
| mriedem | sean-k-mooney: kind of a long story, but neutron reverted https://review.openstack.org/#/c/472365/ | 22:08 |
| mriedem | for setting vif_type='tap' in the linuxbridge job | 22:08 |
| sean-k-mooney | mriedem: oh ok | 22:08 |
| mriedem | because it turns out that on device detach during some hot plug test, it sometimes took ~5 minutes for the actual ethernet device to be removed from the qemu guest | 22:08 |
| mriedem | i know we don't convert vif_type='tap' using os-vif yet | 22:08 |
| sean-k-mooney | correct | 22:09 |
| mriedem | so it's all going down old nova paths, and there are warnings in there like https://github.com/openstack/nova/blob/master/nova/virt/libvirt/designer.py#L56 | 22:09 |
| mriedem | which i found https://www.redhat.com/archives/libvir-list/2011-May/msg00113.html | 22:09 |
| mriedem | we're wondering what's causing the long delay on guest removal during detach, and think it's probably related to issues with the external script | 22:09 |
| mriedem | but don't really know | 22:09 |
| mriedem | https://libvirt.org/formatdomain.html#elementsNICSEthernet is also pretty sparse | 22:10 |
| mriedem | maybe i should have cat'ed out /etc/qemu-ifup or somethign when we timed out | 22:10 |
| sean-k-mooney | yes so the eternet type in libvirt is depercated. i did not know of any reason why but danpb mentioned this in the past to the calico guys | 22:10 |
| mriedem | to see what's in that thing | 22:10 |
| mriedem | i assume it's a security exposure | 22:10 |
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| mriedem | fyi https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1665698 | 22:12 |
| openstack | Launchpad bug 1665698 in OpenStack Compute (nova) ocata "/etc/qemu-ifup not allowed by apparmor" [High,Fix committed] - Assigned to Matt Riedemann (mriedem) | 22:12 |
| mriedem | kevinbenton: ^ i wonder if every time this failed, we hit an image that blocked that script via apparmor - but then i'd think attach would fail | 22:12 |
| sean-k-mooney | the tainted log message from my understanding was cause when qemu is runing as root as far as i knew. reading patch currently | 22:12 |
| mriedem | https://fedoraproject.org/wiki/How_to_debug_Virtualization_problems?rd=Tools/Virtualization/BugReporting#Errors_using_.3Cinterface_type.3D.27ethernet.27.2F.3E | 22:13 |
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| sean-k-mooney | so converting to vif_tap was to resolve a race condition but that was not the only way to do so | 22:14 |
| sean-k-mooney | perhaps it would be better to take a different approch to the orgiginal bug | 22:15 |
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| sean-k-mooney | if we remove the L1 port configuration logic form the linuxbridge l2 agent and rely on nova/os-vif to handel it as we do with ovs | 22:16 |
| sean-k-mooney | we can modify the l3/dhcp agent to do the l1 config as it does for ovs and still have only one code path in the linux bridge l2 agent | 22:17 |
| openstackgerrit | Brian Haley proposed openstack/neutron master: Fix linuxbridge ebtables locking https://review.openstack.org/473993 | 22:17 |
| kevinbenton | sean-k-mooney: yes, there is a ton of work we can do to avoid using vif_type=tap for bridge | 22:17 |
| kevinbenton | but that doesn't fix calico | 22:18 |
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| sean-k-mooney | mriedem: if it was blocked via apparmor/selinux it should be in the journaclt or dmesg logs | 22:18 |
| haleyb_ | kevinbenton: ^^^ patch out, marked WIP, just letting jenkins take a whack at it while i eat. it will need some rechecks to make sure the failure is gone as it's a race | 22:19 |
| sean-k-mooney | kevinbenton: yes that is a valid point though the ethernet type as i said is ahnd has been deprecated in libvirt for several years. it would not take much to crete a calico os-vif plugin to handel vif_type=tap if we wanted to avoid useing an external script | 22:20 |
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| kevinbenton | sean-k-mooney: i'm not sure i follow | 22:23 |
| kevinbenton | sean-k-mooney: what type would go into libvirt | 22:23 |
| kevinbenton | ethernet? | 22:23 |
| kevinbenton | i mean you just said that's deprecated | 22:23 |
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| kevinbenton | so how do we stop libvirt from doing a bunch of extra crap | 22:23 |
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| sean-k-mooney | kevinbenton: sorry reding libvirt docs to see if there is an alternitive. i have not looked at this in some time. | 22:27 |
| kevinbenton | sean-k-mooney: there doesn't seem to be | 22:28 |
| kevinbenton | sean-k-mooney: when i looked | 22:28 |
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| sean-k-mooney | so the issue is that with ethernet it appears that it take up 5mins for the interface to be removed correct | 22:29 |
| kevinbenton | sean-k-mooney: it seems weird to me that they deprecated the only thing that doesn't do a bunch of extra stuff | 22:29 |
| kevinbenton | sean-k-mooney: yeah | 22:29 |
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| mriedem | sean-k-mooney: kevinbenton: keep in mind the up to 5 minute thing is intermittent | 22:34 |
| mriedem | but it was a pretty high failure rate in that job i think | 22:34 |
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| sean-k-mooney | kevinbenton: one possible alternitive would be to use os-vif to create the tap and then have libvirt use it via macvtap or direct. | 22:34 |
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| kevinbenton | sean-k-mooney: does that work? | 22:35 |
| kevinbenton | with a tap device? | 22:35 |
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| sean-k-mooney | i would have to test it but it should not take too long to find out hopefully. the question is even if it does work should we use it | 22:36 |
| kevinbenton | sean-k-mooney: well what else would calico do? | 22:36 |
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| kevinbenton | just deal with the instability and deprecation of ethernet? | 22:36 |
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| sean-k-mooney | mriedem: am i correct in saying that the script that is run is for the ip/mac/mtu config of the port in the calico case | 22:37 |
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| kevinbenton | there should be no script run | 22:39 |
| kevinbenton | the agent handles that stuff | 22:40 |
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| mriedem | sean-k-mooney: i do'nt know what calico is | 22:41 |
| mriedem | besides the breed of cat | 22:41 |
| sean-k-mooney | mriedem: it is bgp based l3 only netowrking | 22:41 |
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| sean-k-mooney | its an sdncontroler | 22:41 |
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| sean-k-mooney | basically calico use /32 route in the kernel + ip tables to provide l3 only connectiviy to vm, the vms just use a tap in the host kernel for networking | 22:42 |
| mriedem | ok, but i have no idea to the answer of your question | 22:43 |
| mriedem | i don't know what's in the default /etc/qemuifup script | 22:43 |
| mriedem | */etc/qemu-ifup | 22:43 |
| sean-k-mooney | i just pulled it from one of my systems one sec | 22:44 |
| sean-k-mooney | http://paste.openstack.org/show/612476/ | 22:45 |
| sean-k-mooney | so it looks like it just bring up the interface in the kernel | 22:45 |
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| sean-k-mooney | and if the default route is via a linux bidge it adds it to the bridge | 22:46 |
| sean-k-mooney | the default /etc/qemu-ifdown script is a no op | 22:46 |
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| sean-k-mooney | mriedem: i wonder if libvirt is being blocked by apparmor and retrying thill it hits a timeout? | 22:47 |
| sean-k-mooney | was there any error in the libvirt or qemu logs when this happended | 22:48 |
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| mriedem | sean-k-mooney: nope no errors | 22:49 |
| mriedem | said all detach device jobs returned with 0 | 22:49 |
| mriedem | although since they are calling external scripts, | 22:50 |
| mriedem | i don't know if that means they lose context or something | 22:50 |
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| mriedem | and then have to wait for a callback or some kind of discovery mechanism to see that the device is removed from the guest | 22:50 |
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| sean-k-mooney | mriedem: perhaps we could use the ethernet type but set the script to /dev/null or something that selinux would allow that was a noop and then handel bringin up the tap with os-vif | 22:53 |
| sean-k-mooney | /bin/ture would be a better choice | 22:53 |
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| kevinbenton | sean-k-mooney: +1 | 22:54 |
| kevinbenton | but if ethernet is deprecated this would only be short term | 22:54 |
| mriedem | sean-k-mooney: probably going to be worth emailing danpb about it, | 22:55 |
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| sean-k-mooney | there is little info in https://libvirt.org/formatdomain.html#elementsNICSEthernet but to altehr the xml generation to set the script tag. | 22:55 |
| mriedem | or see if he can comment on that bug | 22:55 |
| mriedem | nova controls the script path today, | 22:55 |
| mriedem | so we could totally test this out if we wanted in upstream CI linuxbridge job | 22:55 |
| mriedem | by reverting the neutron revert, and making that depend on a nova change to set the script path to /bin/true | 22:56 |
| sean-k-mooney | mriedem: kevinbenton well the deprectation status is second had info i got from danpb 18 months ago or more so the fact that it has not been removed indicate it likely wont be anytime soon | 22:56 |
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| openstackgerrit | OpenStack Proposal Bot proposed openstack/neutron master: Updated from global requirements https://review.openstack.org/472324 | 22:58 |
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| kevinbenton | sean-k-mooney: so i was thinking about what we need to do to switch to os-vif for at least the bridge type | 23:00 |
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| kevinbenton | sean-k-mooney: it seems relatively straight-forward for the dhcp agent | 23:00 |
| kevinbenton | sean-k-mooney: and l3 agent | 23:00 |
| kevinbenton | sean-k-mooney: but the other bit is the VLAN-aware-VMs component | 23:01 |
| kevinbenton | sean-k-mooney: right now it creates VLAN sub-interfaces | 23:01 |
| kevinbenton | tap devices | 23:01 |
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| sean-k-mooney | kevinbenton: the l2 agent create the subinterfecs correct? | 23:01 |
| kevinbenton | sean-k-mooney: yep | 23:01 |
| kevinbenton | sean-k-mooney: in the 'vlan plumber' driver loaded inside of the l2 agent | 23:02 |
| sean-k-mooney | and currently it does that when it detect the creation of the tap device or after it creates the tap device? | 23:02 |
| kevinbenton | sean-k-mooney: so if we want to get rid of the l2 agent creating and plugging into bridges, we need to figure out a way to either have os-vif do sub-interfaces or hand a precreated vif to os-vif for bridge | 23:02 |
| kevinbenton | sean-k-mooney: vlan sub-interfaces are created after it finds a tap device that is a trunk port | 23:03 |
| sean-k-mooney | kevinbenton: well we could have os-vif create all the interface we would just need to pass the subport info also | 23:03 |
| kevinbenton | sean-k-mooney: different steps | 23:03 |
| kevinbenton | sean-k-mooney: nova is creating the tap port that ultimately will be the trunk | 23:03 |
| kevinbenton | sean-k-mooney: l2 is only responsible for creating and removing sub-interfaces | 23:04 |
| kevinbenton | sean-k-mooney: well os-vif is responsible right now for the parent port | 23:04 |
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| kevinbenton | sean-k-mooney: (run inside of nova) | 23:04 |
| sean-k-mooney | kevinbenton: yes that is how it works effectivly today for ovs more or less also. os-vif add the tap to the trunk bridge nad neutron creates the patch prots when it detect the parent port is added to ovs. | 23:05 |
| sean-k-mooney | kevinbenton: so would you want os-vif to create just the parent tap or the parent and children? | 23:05 |
| kevinbenton | sean-k-mooney: if we don't want multiple parties responsible for creating linux bridges, then i need to be able to tell os-vif to either create a sub-interface or hand it the sub-interface and tell it to create the appropriate bridge | 23:06 |
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| kevinbenton | otherwise we end up in the same scenario where we have linux bridge creation logic in multiple places | 23:07 |
| sean-k-mooney | well today you should be able to tell it to create the bridge or at least you can for ovs. we could add that to lb also | 23:07 |
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| sean-k-mooney | kevinbenton: currently the bridge filed in the os-vif network object is used to carry the name of the bridge to attach the interface to for ovs https://github.com/openstack/os-vif/blob/master/os_vif/objects/network.py#L30 | 23:11 |
| kevinbenton | sean-k-mooney: right | 23:11 |
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| kevinbenton | sean-k-mooney: unfortunately getting the trunk wiring logic to relay bridge information to os-vif is going to violate some separation of concerns :/ | 23:12 |
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| sean-k-mooney | well this is set by the ml2 dirver currently | 23:12 |
| sean-k-mooney | but ovs and lb work differently | 23:12 |
| sean-k-mooney | ovs has 1 trunk bridge per parent trunk port | 23:13 |
| sean-k-mooney | linux bridge has a set of vlan subport that each get attached to different bridges correct? | 23:13 |
| kevinbenton | sean-k-mooney: yes, and doing it that way led to an annoying limitation that you can't turn an existing port on an instance into a trunk | 23:13 |
| kevinbenton | sean-k-mooney: yep | 23:13 |
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| kevinbenton | sean-k-mooney: the linux bridge component can just add vlan sub-interfaces to whatever taps it needs to | 23:14 |
| sean-k-mooney | so we actull need to have a bridge per subport in this case | 23:14 |
| kevinbenton | sean-k-mooney: yes, it's much simpler to think of it as just a regular port | 23:14 |
| sean-k-mooney | the perhaps what we should do is model that in os vif | 23:14 |
| sean-k-mooney | extend the if object so that we can associate parent and childern then on the port profile of the child we can specify the bridge name? | 23:15 |
| sean-k-mooney | i would need to read the implentation/spec on the lb side to check it that would work. | 23:16 |
| kevinbenton | sean-k-mooney: what would associating parents/children accomplish? | 23:16 |
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| kevinbenton | port profile of sub-port containing the bridge is fine | 23:17 |
| sean-k-mooney | kevinbenton: well if the parrent vif and a list of child vifs embeded we could loop over them, create teh subpots and add the to the correct bridge without chaning the api in os-vif | 23:17 |
| kevinbenton | sean-k-mooney: how do i add/remove a sub-port then? | 23:18 |
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| sean-k-mooney | call plug/unplug with just the subport | 23:19 |
| sean-k-mooney | i would have to think it though | 23:20 |
| kevinbenton | sean-k-mooney: right, but if we can call plug/unplug on a subport directly i don't see a point in the parent knowing about the children | 23:20 |
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| sean-k-mooney | perhaps it would be cleaner to have nova call os-vif plug once per subport but it would then have to be aware that subports are a thing | 23:20 |
| kevinbenton | sean-k-mooney: no, this is in the l2 agent | 23:21 |
| kevinbenton | sean-k-mooney: or are you suggesting that nova become responsible for wiring sub-ports? | 23:21 |
| sean-k-mooney | yes i was but i realise you were going to call os-vif from the l2 agent | 23:21 |
| sean-k-mooney | both have pros and cons. | 23:22 |
| kevinbenton | what is a pro to have nova do it? | 23:22 |
| kevinbenton | seems like an unnecessary intermediary between neutron and os-vif | 23:23 |
| sean-k-mooney | i guess none other then its allredy using os-vif but yes l2 agent would be better | 23:23 |
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| sean-k-mooney | so if the l2 agent is doing it it can cleanly loop over the subport and call the linuxbriddge plugins plug fuction with a new vif_vlan object and a port profile that speifed the bridge | 23:25 |
| kevinbenton | sean-k-mooney: and the vif_vlan would specified the parent port to create the sub-interface off of, right? | 23:25 |
| kevinbenton | sean-k-mooney: (parent, vlan_tag) essentially | 23:26 |
| sean-k-mooney | e.g. we would introduce a vlan os-vif vif object to reprend a kernel vlan subport. yep parent dev and vlan id | 23:26 |
| kevinbenton | that would work | 23:26 |
| kevinbenton | the only downside is now the trunk plumbing component has to retrieve the port profile for the subports now to get that info to os-vif | 23:27 |
| sean-k-mooney | well no it would be creating it. | 23:28 |
| sean-k-mooney | the port profile i was refering to was the os-vif one | 23:28 |
| sean-k-mooney | not the port binding:profile | 23:28 |
| kevinbenton | well binding:profile will have the source of truth for bridge_name presumably | 23:29 |
| kevinbenton | so i need to get the bridge_name from that | 23:29 |
| sean-k-mooney | i allready have https://bugs.launchpad.net/os-vif/+bug/1666926 and https://bugs.launchpad.net/os-vif/+bug/1666927 open for veth and patch ports for future use of neutron | 23:29 |
| openstack | Launchpad bug 1666926 in os-vif "introduce os-vif VIF object for veth pairs" [Wishlist,New] | 23:29 |
| openstack | Launchpad bug 1666927 in os-vif "introduce os-vif VIF object for patch port pairs" [Wishlist,New] | 23:29 |
| sean-k-mooney | ill open bugs for vlan,vxlan,gre and geneve types too if that would be useful | 23:30 |
| kevinbenton | sean-k-mooney: well vlan for sure for the vlan-aware-vms case on linux bridge | 23:30 |
| kevinbenton | however, do you have resources to spend on those features? | 23:31 |
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| sean-k-mooney | kevinbenton: yes and no. i had hoped to spend some time this cyle working on this but i have been held up with other things | 23:32 |
| sean-k-mooney | if vlan is the most useful now i can prorities adding that first | 23:32 |
| sean-k-mooney | i may be able to get other on my team to lead a hand also. | 23:33 |
| kevinbenton | sean-k-mooney: well the reason i ask is that fixing the LB bug by going the os-vif route involves changing L3/dhcp/lbaas agents to use os-vif | 23:33 |
| kevinbenton | changing the mech driver to return the bridge from agent config | 23:33 |
| kevinbenton | adding support for the vlan stuff to os-vif | 23:33 |
| kevinbenton | adding support for bridge-name to os-vif | 23:33 |
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| kevinbenton | when getting vif_type=tap to work would essentially solve all of the issues for now | 23:34 |
| kevinbenton | because the linux bridge agent is already structured to expect to plug bridges for everything | 23:35 |
| kevinbenton | with Nova special-cased out | 23:35 |
| sean-k-mooney | well we can do both. i think its worth setting the script to /bin/true and then follow up with the os-vif route | 23:35 |
| kevinbenton | sean-k-mooney: changing that script is a nova change, right? | 23:35 |
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| sean-k-mooney | yes but its trivial if nova have no objection | 23:35 |
| kevinbenton | sean-k-mooney: are you already familiar with the location to change that? | 23:36 |
| kevinbenton | sean-k-mooney: if so, can you put up a patch i can do a depends-on against on the neutron side? | 23:36 |
| kevinbenton | (or point me to it) | 23:36 |
| sean-k-mooney | yes its currently 12:30 am here so ill do it in the morning and add you. | 23:37 |
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| sean-k-mooney | kevinbenton: i think its litrally here https://github.com/openstack/nova/blob/master/nova/virt/libvirt/config.py#L1286-L1288 | 23:38 |
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| sean-k-mooney | looking at how that code work i think you can already override the script | 23:39 |
| sean-k-mooney | https://github.com/openstack/nova/blob/95d48361ff1a7c93bbe15358db596f84095cb7e5/nova/virt/libvirt/designer.py#L51-L71 | 23:40 |
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| sean-k-mooney | we should just need to set conf.script = '' to conf.script = '/bin/true' | 23:40 |
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| sean-k-mooney | kevinbenton: haha do you see the note form matt | 23:42 |
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| sean-k-mooney | ill quickly test it locally | 23:43 |
| sean-k-mooney | i have a libridge setup running | 23:43 |
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| sean-k-mooney | kevinbenton: what is the bug number on the neutron side/change it should depend on | 23:48 |
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| sean-k-mooney | kevinbenton: mriedem https://review.openstack.org/474006 | 23:52 |
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| sean-k-mooney | kevinbenton: mriedem i can boot vms with that change, its a quick hack to see if it works but the libvirt xml looks correct http://paste.openstack.org/show/612478/ | 23:53 |
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| openstackgerrit | Swaminathan Vasudevan proposed openstack/neutron master: DVR: Add forwarding routes based on address_scopes https://review.openstack.org/474007 | 23:55 |
| sean-k-mooney | kevinbenton: mriedem im using neutron commit 0f218aae7ed666f3f13ac0560a57f1eeed45cee7 whcih should still be using vif-tap also | 23:56 |
| kevinbenton | sean-k-mooney: sorry, got pulled away | 23:57 |
| kevinbenton | sean-k-mooney: so i'll post a revert of revert depending on that and recheck a bunch | 23:58 |
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| openstackgerrit | Kevin Benton proposed openstack/neutron master: Revert "Revert "Use vif_type='tap' for LinuxBridge for consistency"" https://review.openstack.org/474008 | 23:59 |
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