Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 1491630

Summary:	irqbalance installed but not active on RHV-H NG for RHV4
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Andrea Perotti <aperotti>
Component:	rhev-hypervisor-ng	Assignee:	Ryan Barry <rbarry>
Status:	CLOSED ERRATA	QA Contact:	cshao <cshao>
Severity:	high	Docs Contact:
Priority:	high
Version:	4.1.6	CC:	ableisch, bgraveno, cshao, dfediuck, dguo, huzhao, inetkach, jiawu, mgoldboi, qiyuan, rbarry, sbonazzo, weiwang, yaniwang, ycui, yisong, yzhao
Target Milestone:	ovirt-4.1.7	Keywords:	Rebase, ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	redhat-release-virtualization-host-4.1-7.0	Doc Type:	Bug Fix
Doc Text:	Irqbalance has now been enabled by default and is part of the Red Hat Virtualization Host systemd preset.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-11-07 17:30:17 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Node	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Andrea Perotti 2017-09-14 10:08:33 UTC

Description of problem:
On newly installed RHV-H NG the daemon irqbalance is present but disabled.
This pose a serious impact on the performance of loaded hypervisors that can suffer from the lack of irqbalance and it can put in bad light the quality of RHV-H.

Version-Release number of selected component (if applicable):
rhvh-4.1-0.20170421
rhvh-4.1-0.20170817

How reproducible:
Always

Steps to Reproduce:
1. Install RHV-H ng
2. systemctl is-enabled irqbalance

Actual results:
# systemctl is-enabled irqbalance
disabled

Expected results:
# systemctl is-enabled irqbalance
enabled

Additional info:
Regardless of the root cause for which irqbalance is disabled on RHV-H this can be a check/change done when attaching a new hypervisor to a RHV environment.
In this way, we will fix the default but also will ensure that it will be active once included into the environment.

Comment 1 Ryan Barry 2017-09-14 11:47:41 UTC

Does this also affect RHEL hosts?

Comment 2 Andrea Perotti 2017-09-14 15:23:00 UTC

From the received feedback, this issue affects only RHV-H hosts, not RHEL-H.

Comment 3 cshao 2017-09-15 03:35:01 UTC

QE can reproduce this issue.

Test version:
rhvh-4.1-0.20170817
imgbased-0.9.47-0.1.el7ev.noarch

Test steps:
1. Install RHV-H ng
2. systemctl is-enabled irqbalance

Test result:
# systemctl is-enabled irqbalance
disabled

Comment 8 cshao 2017-10-13 08:53:30 UTC

Test version:
redhat-virtualization-host-4.1-20171012.0
imgbased-0.9.48-0.1.el7ev.noarch

Test steps:
1. Install RHVH 4.1.7.
2. run command: systemctl is-enabled irqbalance

Test result:
# systemctl is-enabled irqbalance
enabled

So the bug is fixed, change bug status to VERIFIED.

Comment 10 errata-xmlrpc 2017-11-07 17:30:17 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-2017:3140