[Dell EMC Unity] Support create share smaller than 3 GB

[OpenStack Infra]

https://review.openstack.org/408448
Dear bug triager. This bug was created since a commit was marked with DOCIMPACT.
Your project "openstack/manila" is set up so that we directly report the documentation bugs against it. If this needs changing, the docimpact-group option needs to be added for the project. You can ask the OpenStack infra team (#openstack-infra on freenode) for help if you need to.

commit bf9adef776381f8c7288c66cc713d14d4dc9ee3d
Author: Tina Tang <email address hidden>
Date: Wed Nov 23 13:32:08 2016 +0800

    [Dell EMC Unity] Support create share smaller than 3 GB

    The minimum file system on Unity is 3 GB. This patch changes
    driver to create 3 GB underlying file system for shares
    smaller than 3 GB.

    DocImpact
    Change-Id: Ida6ad9ad7e752c25b53390f0fee327c594e03f9f
    Closes-Bug: 1648316

[Jason Grosso (jgrosso)]

Hello DELLEMC VNX team any update on this?

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/691807

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/691807
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=a5adb0bd11da734a14bfc9b51f128be90be3bab3
Submitter: Zuul
Branch: master

commit a5adb0bd11da734a14bfc9b51f128be90be3bab3
Author: Yong Huang <email address hidden>
Date: Tue Oct 29 14:42:38 2019 +0800

    [Unity] Implements default filter function

    Implements the default filter function for Unity driver, if the
    share size is smaller than 3GB, will not schedule the share
    creation to Unity backend.

    Change-Id: Iebb5063d4e1c4c2f5ddce0d5000b7d51dcb0605b
    Closes-bug: #1652379