[jira] [Created] (MESOS-6575) Change `disk/xfs` isolator to terminate executor when it exceeds quota

["Santhosh Kumar Shanmugham (JIRA)" <ji...@apache.org>]

Santhosh Kumar Shanmugham created MESOS-6575:
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             Summary: Change `disk/xfs` isolator to terminate executor when it exceeds quota
                 Key: MESOS-6575
                 URL: https://issues.apache.org/jira/browse/MESOS-6575
             Project: Mesos
          Issue Type: Task
          Components: isolation, slave
            Reporter: Santhosh Kumar Shanmugham


Unlike {{disk/du}} isolator which sends a {{ContainerLimitation}} protobuf when the executor exceeds the quota, {{disk/xfs}} isolator, which relies on XFS's internal quota enforcement, silently fails the {{write}} operation, that causes the quota limit to be exceeded, without surfacing the quota breach information.

This task is to change the `disk/xfs` isolator so that, a {{ContainerLimitation}} message is triggered when the quota is exceeded. 

This feature will rely on the underlying filesystem being mounted with {{pqnoenforce}} (accounting-only mode), so that XFS does not silently causes a {{EDQUOT}} error on writes that causes the quota to be exceeded. Now the isolator can track the disk quota via {{xfs_quota}}, very much like {{disk/du}} using {{du}}, every {{container_disk_watch_interval}} and surface the disk quota limit exceed event via a {{ContainerLimitation}} protobuf, causing the executor to be terminated. This feature can then be turned on/off via the existing {{enforce_container_disk_quota}} option.



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