Bug 1917718

Summary:	[RFE] Collect memory usage from guests without ovirt-guest-agent and memory ballooning
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Juan Orti <jortialc>
Component:	ovirt-engine	Assignee:	Liran Rotenberg <lrotenbe>
Status:	CLOSED ERRATA	QA Contact:	Polina <pagranat>
Severity:	medium	Docs Contact:
Priority:	high
Version:	4.4.3	CC:	ahadas, lrotenbe, lsurette, mavital, mtessun, srevivo, sstagnar, ycui
Target Milestone:	ovirt-4.4.6	Keywords:	FutureFeature
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ovirt-engine-4.4.6.5 vdsm-4.40.60.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-06-01 13:22:11 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Virt	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1911610
Bug Blocks:	1930895

Description Juan Orti 2021-01-19 09:30:08 UTC

Description of problem:
Please, see this bug report for background:
https://bugzilla.redhat.com/show_bug.cgi?id=1789647

The memory information from RHEL8 guests is not collected if the VM doesn't have a balloon device even if the guest has qemu-guest-agent installed.

There are certain cases where it is not recommeded to have a balloon device, for example when using a high performance VM:

https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.4/html/virtual_machine_management_guide/configuring_high_performance_virtual_machines_templates_and_pools#creating_a_high_performance_virtual_machine_template_or_pool

Version-Release number of selected component (if applicable):
RHV 4.3, 4.4
qemu-guest-agent-4.2.0-34.module+el8.3.0+8829+e7a0a3ea.1.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Install RHEL8 VM in RHV. Don't use balloon device.
2. Install qemu-guest-agent in the guest.

Actual results:
VM memory usage is not reported in RHV.

Expected results:
Memory usage reported.

Additional info:

Comment 2 Arik 2021-01-19 10:18:33 UTC

We have bz 1917718 on oVirt that is also about this issue

Comment 3 Arik 2021-01-19 15:24:40 UTC

(In reply to Arik from comment #2)
> We have bz 1917718 on oVirt that is also about this issue

I meant bz 1911610

Comment 4 Arik 2021-01-31 14:03:00 UTC

*** Bug 1911610 has been marked as a duplicate of this bug. ***

Comment 6 Polina 2021-05-04 14:50:21 UTC

verified on ovirt-engine-4.4.6.6-0.10.el8ev.noarch by the attached new Polarion case and also the existing automation tests for ballooning functionality were passed successfully.

Comment 10 errata-xmlrpc 2021-06-01 13:22:11 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 (Moderate: RHV Manager security update (ovirt-engine) [ovirt-4.4.6]), 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/RHSA-2021:2179

Comment 11 meital avital 2022-08-01 11:59:20 UTC

Due to QE capacity, we are not going to cover this issue in our automation