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https://issues.apache.org/jira/browse/HDDS-8191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ethan Rose resolved HDDS-8191.
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Resolution: Fixed
> Avoid false positive failures in scanners
> -----------------------------------------
>
> Key: HDDS-8191
> URL: https://issues.apache.org/jira/browse/HDDS-8191
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Ethan Rose
> Priority: Major
>
> Sometimes volume or container scan may fail due to external issues in the
> file system or operation system that do not affect the content of the
> containers or volumes and are caused by simple admin mistakes. This jira
> proposes having the following failures be logged by the scanners but not
> cause their contents to be marked unhealthy:
> * Too many open files
> ** Can be fixed by the admin adjusting the file descriptor limit for the node.
> * Permission denied for reading or writing.
> ** Can be fixed by the admin fixing filesystem permissions.
> * No space left on device
> ** Should be prevented by configuring hdds.datanode.dir.du.reserved.percent
> to leave some free space on the volume.
> ** Failing full volumes could put an already full cluster in a worse state by
> triggering replication.
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