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From "Jay Buffington (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MESOS-2544) mesos containerizer should allow for container images to specify dependent layers
Date Wed, 25 Mar 2015 04:28:52 GMT
Jay Buffington created MESOS-2544:
-------------------------------------

             Summary: mesos containerizer should allow for container images to specify dependent
layers
                 Key: MESOS-2544
                 URL: https://issues.apache.org/jira/browse/MESOS-2544
             Project: Mesos
          Issue Type: Technical task
            Reporter: Jay Buffington


In order to get better cache-hit rates we should allow for stacked container image layers.
 The image archive format is the format the image is hosted in.  Examples include docker image
format [1] and ACI [2].  Whatever the archive format, it needs to allow for referencing dependent
layers.

The mesos slave needs to pull down the image and its dependent layers and convert it to a
image runtime format. This format could be hard links, overlayfs[3] or take advantage of device
mapper or btrfs features.

[1] https://github.com/docker/docker/blob/master/image/spec/v1.md
[2] https://github.com/appc/spec/blob/master/SPEC.md#app-container-image
[3] https://www.kernel.org/doc/Documentation/filesystems/overlayfs.txt 



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