Bug 2014888

Summary:	oVirt executive dashboard/Virtual Machine dashboard does not actually show disk I/O operations per second, but it shows sum of I/o operations since the boot time of VM
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Abhishekh Patil <abpatil>
Component:	ovirt-engine-dwh	Assignee:	Aviv Litman <alitman>
Status:	CLOSED ERRATA	QA Contact:	Pavel Novotny <pnovotny>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.4.8	CC:	alitman, emarcus, gdeolive, klaas, lsurette, mavital, mhicks, mperina, srevivo
Target Milestone:	ovirt-4.5.0
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ovirt-engine-dwh-4.5.1	Doc Type:	Bug Fix
Doc Text:	Dashboard field descriptions have been updated to match the real meanings of I/O operations data fields.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-05-26 16:23:11 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Metrics	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2010903
Bug Blocks:

Description Abhishekh Patil 2021-10-17 17:47:45 UTC

Description of problem:

oVirt executive dashboard/Virtual Machine dashboard does not actually show disk I/O operations per second, but it shows sum of I/O operations since the boot time of VM.

Version-Release number of selected component (if applicable):
ovirt-engine-dwh-4.4.8-1.el8ev.noarch

How reproducible:
Always

Steps to Reproduce:
1. Login to RHV Grafana UI and check 'Disk I/O operations/sec' in 'oVirt executive dashboard/Virtual Machine dashboard'.

Actual results:

'Disk I/O operations/sec' in 'oVirt executive dashboard/Virtual Machine dashboard' shows sum of I/O operations since the boot time of VM.

Expected results:

'Disk I/O operations/sec' in 'oVirt executive dashboard/Virtual Machine dashboard' should show I/O operations per second actually.

Additional info:

Comment 2 Klaas Demter 2021-10-18 06:37:00 UTC

I think this is filed against the wrong component. I am guessing this should be filed against vdsm or whoever writes the v4_4_statistics_vms_disks_resources_usage_samples table.
read_rate_bytes_per_second is correct, read_ops_per_second is a sum, not an average per second, same for write

Comment 16 Pavel Novotny 2022-05-06 23:55:37 UTC

Verified in
ovirt-engine-4.5.0.6-0.7.el8ev.noarch
ovirt-engine-dwh-4.5.2-1.el8ev.noarch

Second part of bug 2010903

In oVirt Executive Dashboards / 05 Virtual Machine Dashboard 
panel "Disk I/O operations since VM start (over time) (EX05-18)"
has been renamed to say "since VM start" instead of previous "per second" which was incorrect.

Comment 21 errata-xmlrpc 2022-05-26 16:23:11 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 (ovirt-engine) [ovirt-4.5.0] security update), 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-2022:4711

Comment 22 meital avital 2022-08-04 14:17:11 UTC

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