[jira] [Commented] (HDDS-1772) Add disk full test to fault injection test

["Eric Yang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDDS-1772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16881594#comment-16881594 ] 

Eric Yang commented on HDDS-1772:
---------------------------------

The proposed patch 002 creates a volume called "target_ozone_fit" in docker with disk space of 5mb.  This volume is mounted as data disk to all nodes.  ITDiskFull test will fill up all available disk space in target_ozone_fit volume, and perform Ozone FS operation.  The tested area includes:

# check if scm can exit safe mode when disk is full.
# check if upload fails when disk is full.

> Add disk full test to fault injection test
> ------------------------------------------
>
>                 Key: HDDS-1772
>                 URL: https://issues.apache.org/jira/browse/HDDS-1772
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>            Reporter: Eric Yang
>            Priority: Major
>         Attachments: HDDS-1772.001.patch, HDDS-1772.002.patch
>
>
> In Read-only test, one of the simulation to verify is the data disk becomes full.  This can be tested by using a small Docker data disk to simulate disk full.  When data disk is full, Ozone should continue to operate, and provide read access to Ozone file system.



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