Comment 3 for bug 1463905

Reviewed: https://review.openstack.org/192165
Committed: https://git.openstack.org/cgit/stackforge/os-ansible-deployment/commit/?id=e355dd3e99a4f0e51507565b201a1c2a26c816ae
Submitter: Jenkins
Branch: kilo

commit e355dd3e99a4f0e51507565b201a1c2a26c816ae
Author: Shu Shen <email address hidden>
Date: Wed Jun 10 05:40:56 2015 +0000

    Configurable lxc cache and rootfs path

    The rootfs of the containers use large disk space and is defaulted to
    /var/lib/lxc. It's desirable to configure an alternative rootfs directory on a
    partition with large enough free space to hold the rootfs.

    The rootfs of a container is hard-linked to the lxc cache when created by lxc
    templates. Therefore both have to reside on the same partition and the lxc
    cache shall be configurable as well as the rootfs directory.

    The lxc-ubuntu template is patched by lxc-host role to use the configured lxc
    cache folder. This patch should be removed once the updated upstream lxc with
    support of configuring the cache path goes mainstream.

    To confgiure these parameters, set the following variables in global_overrides
    of openstack_user_config.yml:
        - lxc_container_directory, defaults to /var/lib/lxc
        - lxc_container_cache_path, defaults to /var/cache/lxc

    Closes-Bug: #1463905
    Change-Id: I9ccf0c45e0a1875644750e0d70ce613265040176
    (cherry picked from commit de2dc69641d41f1a1e42dec4374f708634af55a9)