Comment 4 for bug 1850207

Reviewed: https://review.opendev.org/692125
Committed: https://git.openstack.org/cgit/starlingx/config/commit/?id=ae9389d658b6233e1923b277d7c8e115cdd49e06
Submitter: Zuul
Branch: master

commit ae9389d658b6233e1923b277d7c8e115cdd49e06
Author: Ovidiu Poncea <email address hidden>
Date: Wed Oct 30 14:39:23 2019 +0200

    Reduce postgres and backup filesystem sizes

    Since openstack is a separate application we reduce the preallocated
    size for the postgresql database and for the backup filesystems.
    Currently postgres fs allocation is 40G for disk size greater than
    240G and 20G for disk size between 240G - 186G inclusive.

    This commit cuts these defaults in half:
     o postgresql will be 20G for large disk size and 10G for small disk
       size by default.
     o backup filesystem will be adjusted to 25G and 20G respectively to
       reflect the reduction of postgres fs allocation.

    Change-Id: I87ce7b90c8d9b28f230ea7a42122215e2dacfc9b
    Partial-Bug: 1850207
    Signed-off-by: Ovidiu Poncea <email address hidden>