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Bug 1468620

Summary:	Nova cannot configure MTU for DPDK ports; sets to default MTU.
Product:	Red Hat OpenStack	Reporter:	Vincent S. Cojot <vcojot>
Component:	openstack-nova	Assignee:	Sahid Ferdjaoui <sferdjao>
Status:	CLOSED ERRATA	QA Contact:	awaugama
Severity:	high	Docs Contact:
Priority:	high
Version:	10.0 (Newton)	CC:	awaugama, berrange, dasmith, eglynn, ihrachys, jthomas, kchamart, samccann, sbauza, sferdjao, sgordon, srevivo, vcojot, vromanso
Target Milestone:	z4	Keywords:	Triaged, ZStream
Target Release:	10.0 (Newton)
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	openstack-nova-14.0.7-10.el7ost	Doc Type:	Bug Fix
Doc Text:	Cause: When using DPDK ports, the MTU passed by Neutron to Nova is not take into account. Consequence: The ports are configured to a default value which may not match what is expected (for example,jumbo frames).	Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-09-06 17:04:57 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1447081
Bug Blocks:

Description Vincent S. Cojot 2017-07-07 14:50:31 UTC

Description of problem:

on OSP10 DPDK, VM instances on DPDK never get the MTU of the ovs bridge they get attached to.
3 backports were identified as being needed. This BZ is to track the openstack-nova backport ([2])

[0] 7a5eb34bd697b7e4cf5e0d5e48e3ec84ff11effa
[1] f3130fe8e23fb07532bb3d740fffaf07481c1e70
[2] 43565ffb9785f6e4848a001cc4be5cec91bfeab1

Comment 6 errata-xmlrpc 2017-09-06 17:04:57 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:2652