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Who When What Removed Added
Hynek Mlnarik 2016-09-01 14:14:25 UTC Link ID OpenStack gerrit 355322
Doc Text Cause:
Fail mode on OVS physical bridges was not set, defaulting to standalone. This however means that when the ofctl_interface is set to native and the interface becomes unavailable (due to heavy load, ovs agent shutdown, network disruption), the flows on physical bridges can be cleared.

Consequence:
The physical bridge traffic is disrupted

Fix:
Set OVS physical bridge fail mode to secure

Result:
Flows are retained on physical bridges.
Doc Type If docs needed, set a value Bug Fix
Hynek Mlnarik 2016-09-01 14:36:52 UTC Status NEW POST
RHEL Program Management 2016-09-01 15:44:57 UTC Keywords ZStream
Hynek Mlnarik 2016-09-14 12:11:42 UTC Status POST MODIFIED
Fixed In Version openstack-neutron-7.1.1-6.el7ost
Red Hat Bugzilla Rules Engine 2016-09-14 12:11:48 UTC Target Release --- 8.0 (Liberty)
errata-xmlrpc 2016-09-29 18:04:37 UTC Status MODIFIED ON_QA
Toni Freger 2016-10-06 12:09:24 UTC Status ON_QA VERIFIED
Martin Lopes 2016-10-10 05:33:10 UTC CC mlopes
Doc Text Cause:
Fail mode on OVS physical bridges was not set, defaulting to standalone. This however means that when the ofctl_interface is set to native and the interface becomes unavailable (due to heavy load, ovs agent shutdown, network disruption), the flows on physical bridges can be cleared.

Consequence:
The physical bridge traffic is disrupted

Fix:
Set OVS physical bridge fail mode to secure

Result:
Flows are retained on physical bridges.
Prior to this update, the failure mode on OVS physical bridges was not set, defaulting to `standalone`. Consequently, when the ofctl_interface was set to `native` and the interface became unavailable (due to heavy load, OVS agent shutdown, network disruption), the flows on physical bridges may have been cleared, with the physical bridge traffic being disrupted.
With this update, the OVS physical bridge fail mode is set to `secure`. As a result, flows are retained on physical bridges.
errata-xmlrpc 2016-10-11 14:27:59 UTC Status VERIFIED RELEASE_PENDING
errata-xmlrpc 2016-10-11 15:11:54 UTC Status RELEASE_PENDING CLOSED
Resolution --- ERRATA
Last Closed 2016-10-11 11:11:54 UTC
Derek 2019-02-17 12:12:58 UTC Keywords FeatureBackport
CC dcadzow
Red Hat One Jira (issues.redhat.com) 2022-08-23 22:56:18 UTC Link ID Red Hat Issue Tracker OSP-2959

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