[jira] [Updated] (HDDS-14446) Make Datanode disk space related commands and metrics clear

["Hui Fei (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDDS-14446?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hui Fei updated HDDS-14446:
---------------------------
    Target Version/s: 2.3.0

<<Bulk update>>
Apache Ozone 2.2.0 release is in progress. I'm updating all unresolved jiras targeting 2.2.0 to retarget 2.3.0.

> Make Datanode disk space related commands and metrics clear
> -----------------------------------------------------------
>
>                 Key: HDDS-14446
>                 URL: https://issues.apache.org/jira/browse/HDDS-14446
>             Project: Apache Ozone
>          Issue Type: Improvement
>          Components: DN, Ozone Recon, SCM
>    Affects Versions: 2.1.0
>            Reporter: Siddhant Sangwan
>            Assignee: Siddhant Sangwan
>            Priority: Major
>              Labels: pull-request-available
>
> Ozone currently exposes Datanode disk space statistics (capacity, used space, available space) at various places - Datanode Web UI overview page, JMX volume info metrics, SCM JMX metrics, usageinfo command, Recon Datanodes page, Recon main overview page.
> However, the terms used to shows these stats are currently confusing. For example, if Recon is showing the Capacity of a Datanode with 1 volume as 500 GB, that's actually the _capacity available to Ozone_. That is, raw disk capacity - du.reserved, not raw disk capacity.
> This jira aims to clarify these terms and make them consistent everywhere, except the main Recon overview page - that can be handled in a separate jira.



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