Bug 1854778 - [sriov] [4.5] The operator reset the PF MTU to 1500 when policy is deleted
Summary: [sriov] [4.5] The operator reset the PF MTU to 1500 when policy is deleted
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Networking
Version: 4.5
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: ---
: 4.5.z
Assignee: Peng Liu
QA Contact: zhaozhanqi
URL:
Whiteboard:
Depends On: 1854775
Blocks: 1854779
TreeView+ depends on / blocked
 
Reported: 2020-07-08 08:44 UTC by Peng Liu
Modified: 2020-07-30 18:57 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1854775
Environment:
Last Closed: 2020-07-30 18:56:59 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github openshift sriov-network-operator pull 293 0 None closed [release-4.5] BUG 1854778: Improve the MTU set/reset logic 2020-07-29 12:27:17 UTC
Red Hat Product Errata RHBA-2020:3028 0 None None None 2020-07-30 18:57:33 UTC

Description Peng Liu 2020-07-08 08:44:17 UTC
+++ This bug was initially created as a clone of Bug #1854775 +++

Description of problem:
The operator always reset the PF MTU to 1500 when the policy is deleted

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Set the PF mtu to 5000. e.g. $ sudo ip link set dev ens803f0 mtu 5000

2. Deploy the sriov network operator 

3. Apply following policy
apiVersion: sriovnetwork.openshift.io/v1
kind: SriovNetworkNodePolicy
metadata:
  name: policy-net-2
spec:
  resourceName: nic2
  nodeSelector:
    kubernetes.io/hostname: worker-0
    feature.node.kubernetes.io/network-sriov.capable: "true"
  priority: 99
  mtu: 9000
  numVfs: 4
  nicSelector:
    pfNames: ['ens803f0#0-0']
  isRdma: false

4. remove the policy

Actual results:
The MTU of ens803f0 was reset to 1500

Expected results:
The MTU of ens803f0 was reset to 5000

Additional info:

Comment 5 zhaozhanqi 2020-07-22 07:25:25 UTC
Verified this bug on 4.5.0-202007211936.p0

MTU can be restored to origin when the policy is deleted.

Comment 7 errata-xmlrpc 2020-07-30 18:56:59 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-2020:3028


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