[jira] [Created] (MESOS-6384) Support for size with create-on-demand volumes with Docker containerizer

["David Bosschaert (JIRA)" <ji...@apache.org>]

David Bosschaert created MESOS-6384:
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             Summary: Support for size with create-on-demand volumes with Docker containerizer
                 Key: MESOS-6384
                 URL: https://issues.apache.org/jira/browse/MESOS-6384
             Project: Mesos
          Issue Type: Improvement
          Components: docker
            Reporter: David Bosschaert


This issue was originally worded as marathon issue https://github.com/mesosphere/marathon/issues/4583

When specifying an external volume to be used with a docker container, the size of the external volume cannot be specified. External volumes are often created on-demand, when first used, but if no size can be specified all volumes will have the same, default size. 
In the case if DVDI with REXRay, the default size is 16GB. This default can be modified but it is clearly desirable to be able to specify per-volume what the size should be.

When mesos creates the external volume on-demand, which I presume normally happens before the docker container is launched, it should allow the specification of the size of this volume. 



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