Bug 1758067 - RFE: Add Missing Host statistics
Summary: RFE: Add Missing Host statistics
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Virtualization Manager
Classification: Red Hat
Component: vdsm
Version: unspecified
Hardware: Unspecified
OS: Unspecified
unspecified
low
Target Milestone: ---
: ---
Assignee: Marcin Sobczyk
QA Contact: meital avital
URL:
Whiteboard:
Depends On:
Blocks: 1751423
TreeView+ depends on / blocked
 
Reported: 2019-10-03 07:58 UTC by Ori Liel
Modified: 2022-03-11 14:18 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2019-10-10 07:24:49 UTC
oVirt Team: Infra
Target Upstream Version:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHV-45142 0 None None None 2022-03-11 14:18:05 UTC

Description Ori Liel 2019-10-03 07:58:54 UTC 
The following host statistics are not fetched by VDSM: 

  memory.buffers
  memory.cached
  swap.cached

This causes a bug in oVirt, where these statistics are displayed as having the value 0: 

  https://bugzilla.redhat.com/1751423

VDSM should collect and return these statistics.
Comment 1 Michal Skrivanek 2019-10-04 05:25:45 UTC 
Why is this filed as RHV bug?

These statistics are not displayed, AFACT. 
Why do we want to collect these, oVirt doesn’t use these values directly?
Comment 2 Ori Liel 2019-10-10 05:57:22 UTC 
It's a RHV bug because when fetching host statistics

  GET .../ovirt-engine/api/hosts/xxx 

these metrics are reported as having the value '0', regardless of their true value:


    <statistic href="/ovirt-engine/api/hosts/7d74774b-6bb1-45df-a7be-f855e02a9dd5/statistics/c81c86f0-bc61-3c78-a543-898b8339d03f" id="c81c86f0-bc61-3c78-a543-898b8339d03f">
        <name>memory.buffers</name>
        <description>IO buffers</description>
        <kind>gauge</kind>
        <type>integer</type>
        <unit>bytes</unit>
        <values>
            <value>
                <datum>0</datum>                    <------------ HERE
            </value>
        </values>
        <host href="/ovirt-engine/api/hosts/7d74774b-6bb1-45df-a7be-f855e02a9dd5" id="7d74774b-6bb1-45df-a7be-f855e02a9dd5"/>
    </statistic>
    <statistic href="/ovirt-engine/api/hosts/7d74774b-6bb1-45df-a7be-f855e02a9dd5/statistics/1b6244ee-8dbd-365d-8762-482ddc05ee11" id="1b6244ee-8dbd-365d-8762-482ddc05ee11">
        <name>memory.cached</name>
        <description>OS caches</description>
        <kind>gauge</kind>
        <type>integer</type>
        <unit>bytes</unit>
        <values>
            <value>
                <datum>0</datum>                    <------------ HERE
            </value>
        </values>
        <host href="/ovirt-engine/api/hosts/7d74774b-6bb1-45df-a7be-f855e02a9dd5" id="7d74774b-6bb1-45df-a7be-f855e02a9dd5"/>
    </statistic>
    <statistic href="/ovirt-engine/api/hosts/7d74774b-6bb1-45df-a7be-f855e02a9dd5/statistics/ea00da15-de2d-3393-a7cb-810c4b19ed07" id="ea00da15-de2d-3393-a7cb-810c4b19ed07">
        <name>swap.cached</name>
        <description>Swap also in memory</description>
        <kind>gauge</kind>
        <type>integer</type>
        <unit>bytes</unit>
        <values>
            <value>
                <datum>0</datum>                    <------------ HERE
            </value>
        </values>
        <host href="/ovirt-engine/api/hosts/7d74774b-6bb1-45df-a7be-f855e02a9dd5" id="7d74774b-6bb1-45df-a7be-f855e02a9dd5"/>
    </statistic>
Comment 3 Martin Perina 2019-10-10 07:24:49 UTC 
Upon further discussion closing as WONTFIX, it was decided in the past that all metrics which are not used by engine itself should be published only into the metrics store.
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