Ethan Rose created HDDS-13093:
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Summary: Add metrics to count volumes by health state per datanode
Key: HDDS-13093
URL: https://issues.apache.org/jira/browse/HDDS-13093
Project: Apache Ozone
Issue Type: Sub-task
Reporter: Ethan Rose
Add metrics to the datanode to count the number of volumes and volumes in each
health state:
* `TotalVolumes`: The total number of volumes on the datanode regardless of
health state.
** Useful to identify mount issues where the number of volumes the datanode
sees is less than expected.
* `NumHealthyVolumes`: The total number of healthy volumes on the datanode.
* `NumFailedVolumes`: The total number of failed volumes on the datanode.
These counts can be aggregated for both data and metadata volumes.
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