Comment 2 for bug 1813267

Reviewed: https://review.openstack.org/633177
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=6eba403ba020292806d0ec35edc7964eaa8e8eaf
Submitter: Zuul
Branch: master

commit 6eba403ba020292806d0ec35edc7964eaa8e8eaf
Author: zhangyang <email address hidden>
Date: Fri Jan 25 18:11:17 2019 +0800

    Create volume attachments status check.

    Currently the new cinder attachment_create method allows volumes in
    all status to be performed for single attachment. This may cause
    problems if volume-attach operation is taken on volumes in creating
    status.
    In order to avoid these problems, we should only allow volumes
    in 'in-use', 'reserved' status to check whether this attachment
    creation is a override operation for a same instance.

    Related-bug: #1694530
    Change-Id: Ie59f609d38290147a67a936c61e0164fe278da99
    Closes-Bug: #1813267