openstack-ansible-lxc_hosts/releasenotes/notes/base-container-overlayfs-ec7eeda2f5807e96.yaml
Jesse Pretorius a4b52f0a49 Implement base container for overlayfs-backed containers
Since overlayfs is now part of the mainstream kernel, it makes sense
to take advantage of it to speed up the container creation process.

This patch implements a base container to be used in the container
creation process if 'overlayfs' is set as the container backing
store.

Change-Id: I20123b83af10c0890f4d5945b9fb230acd664213
2016-06-14 11:42:39 +00:00

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YAML

---
features:
- The container cache preparation process now allows ``overlayfs`` to be set
as the ``lxc_container_backing_store``. When this is set a base container
will be created using a name of the form
`<linux-distribution>`-`distribution-release>`-`<host-cpu-architecture>`.
The container will be stopped as it is not used for anything except to be
a backing store for all other containers which will be based on a snapshot
of the base container. The ``overlayfs`` backing store is not recommended
to be used for production unless the host kernel version is 3.18 or
higher.