Sometimes L3 rpc update operations produce deadlock errors

Bug #1564144 reported by Eugene Nikanorov
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
neutron
Fix Released
Medium
Eugene Nikanorov

Bug Description

When DB backend works in a multimaster mode and L3 agents are setting up floating ips and routers, they often produce
Deadlock errors when changing floating IP or router statuses.

Need to add db_retry decorator to corresponding rpc handlers.

Changed in neutron:
assignee: nobody → Eugene Nikanorov (enikanorov)
status: New → In Progress
Changed in neutron:
importance: Undecided → Medium
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to neutron (stable/mitaka)

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/303337

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (master)

Reviewed: https://review.openstack.org/299658
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=d8f0ee5ecd67ee6ec956c7fdadce3c2a8e8301bf
Submitter: Jenkins
Branch: master

commit d8f0ee5ecd67ee6ec956c7fdadce3c2a8e8301bf
Author: Eugene Nikanorov <email address hidden>
Date: Wed Mar 30 08:36:58 2016 -0700

    Wrap all update/delete l3_rpc handlers with retries

    This is needed for mysql galera multimaster backends.

    Closes-Bug: #1564144
    Change-Id: Ia5a14d5ee91c6672d61904f669e9e845a7f262c9

Changed in neutron:
status: In Progress → Fix Released
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (stable/mitaka)

Reviewed: https://review.openstack.org/303337
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=9c58ae6a70125497a39612f71c53c60a8b35968e
Submitter: Jenkins
Branch: stable/mitaka

commit 9c58ae6a70125497a39612f71c53c60a8b35968e
Author: Eugene Nikanorov <email address hidden>
Date: Wed Mar 30 08:36:58 2016 -0700

    Wrap all update/delete l3_rpc handlers with retries

    This is needed for mysql galera multimaster backends.

    Closes-Bug: #1564144
    Change-Id: Ia5a14d5ee91c6672d61904f669e9e845a7f262c9
    (cherry picked from commit d8f0ee5ecd67ee6ec956c7fdadce3c2a8e8301bf)

tags: added: in-stable-mitaka
Revision history for this message
Doug Hellmann (doug-hellmann) wrote : Fix included in openstack/neutron 8.1.0

This issue was fixed in the openstack/neutron 8.1.0 release.

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to neutron (master)

Fix proposed to branch: master
Review: https://review.openstack.org/314250

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to neutron (master)
Download full text (36.9 KiB)

Reviewed: https://review.openstack.org/314250
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=3bf73801df169de40d365e6240e045266392ca63
Submitter: Jenkins
Branch: master

commit a323769143001d67fd1b3b4ba294e59accd09e0e
Author: Ryan Moats <email address hidden>
Date: Tue Oct 20 15:51:37 2015 +0000

    Revert "Improve performance of ensure_namespace"

    This reverts commit 81823e86328e62850a89aef9f0b609bfc0a6dacd.

    Unneeded optimization: this commit only improves execution
    time on the order of milliseconds, which is less than 1% of
    the total router update execution time at the network node.

    This also

    Closes-bug: #1574881

    Change-Id: Icbcdf4725ba7d2e743bb6761c9799ae436bd953b

commit 7fcf0253246832300f13b0aa4cea397215700572
Author: OpenStack Proposal Bot <email address hidden>
Date: Thu Apr 21 07:05:16 2016 +0000

    Imported Translations from Zanata

    For more information about this automatic import see:
    https://wiki.openstack.org/wiki/Translations/Infrastructure

    Change-Id: I9e930750dde85a9beb0b6f85eeea8a0962d3e020

commit 643b4431606421b09d05eb0ccde130adbf88df64
Author: OpenStack Proposal Bot <email address hidden>
Date: Tue Apr 19 06:52:48 2016 +0000

    Imported Translations from Zanata

    For more information about this automatic import see:
    https://wiki.openstack.org/wiki/Translations/Infrastructure

    Change-Id: I52d7460b3265b5460b9089e1cc58624640dc7230

commit 1ffea42ccdc14b7a6162c1895bd8f2aae48d5dae
Author: OpenStack Proposal Bot <email address hidden>
Date: Mon Apr 18 15:03:30 2016 +0000

    Updated from global requirements

    Change-Id: Icb27945b3f222af1d9ab2b62bf2169d82b6ae26c

commit b970ed5bdac60c0fa227f2fddaa9b842ba4f51a7
Author: Kevin Benton <email address hidden>
Date: Fri Apr 8 17:52:14 2016 -0700

    Clear DVR MAC on last agent deletion from host

    Once all agents are deleted from a host, the DVR MAC generated
    for that host should be deleted as well to prevent a buildup of
    pointless flows generated in the OVS agent for hosts that don't
    exist.

    Closes-Bug: #1568206
    Change-Id: I51e736aa0431980a595ecf810f148ca62d990d20
    (cherry picked from commit 92527c2de2afaf4862fddc101143e4d02858924d)

commit eee9e58ed258a48c69effef121f55fdaa5b68bd6
Author: Mike Bayer <email address hidden>
Date: Tue Feb 9 13:10:57 2016 -0500

    Add an option for WSGI pool size

    Neutron currently hardcodes the number of
    greenlets used to process requests in a process to 1000.
    As detailed in
    http://lists.openstack.org/pipermail/openstack-dev/2015-December/082717.html

    this can cause requests to wait within one process
    for available database connection while other processes
    remain available.

    By adding a wsgi_default_pool_size option functionally
    identical to that of Nova, we can lower the number of
    greenlets per process to be more in line with a typical
    max database connection pool size.

    DocImpact: a previously unused configuration value
               wsgi_default_pool_size is now used to a...

tags: added: neutron-proactive-backport-potential
Revision history for this message
Doug Hellmann (doug-hellmann) wrote : Fix included in openstack/neutron 9.0.0.0b1

This issue was fixed in the openstack/neutron 9.0.0.0b1 development milestone.

tags: removed: neutron-proactive-backport-potential
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