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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