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https://issues.apache.org/jira/browse/MESOS-6575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16391804#comment-16391804
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James Peach commented on MESOS-6575:
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> James Peach Would you be able to act as the shepherd for getting this patch
> in?
Yes I can shepherd. However, I don't think that setting the soft limit is the
right approach. I can't see a scenario where it is actually needed. If the
isolator needs to poll (and it almost certainly does), then all it needs to do
is to compare the actual disk usage against the allocated disk resource.
> 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: agent, containerization
> Reporter: Santhosh Kumar Shanmugham
> Assignee: James Peach
> Priority: Major
>
> 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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