Comment 3 for bug 1791170

Reviewed: https://review.openstack.org/600743
Committed: https://git.openstack.org/cgit/openstack/stx-config/commit/?id=92cc2240cfbdb99c249c229b94568723d8b86897
Submitter: Zuul
Branch: master

commit 92cc2240cfbdb99c249c229b94568723d8b86897
Author: Stefan Dinescu <email address hidden>
Date: Fri Sep 7 15:44:49 2018 +0300

    Simplify disk space allocation

    Allocating of space on the root disk was done in kickstart, combined
    with config_controller. Various checks for disk and volume group
    space made it difficult to add new filesystem partitions.

    To simplify this, all checks are now merged under disk size checks.

    Kickstart files now create the partitions of the same size for
    rootfs and log partitions, no matter the disk size, with the
    only variable size being the cgts-vg size.

    Thus, any future changes will only need to consider only this
    size for ensuring enough space is present.

    The limit between small and big disks is 240GB, with a minimum
    disk size of 120GB.

    Change-Id: I0ac54d5b2ba72af9505881c5849bc4e76540b3f4
    Closes-bug: 1791170
    Signed-off-by: Stefan Dinescu <email address hidden>