Comment 2 for bug 1884552

Reviewed: https://review.opendev.org/737311
Committed: https://git.openstack.org/cgit/openstack/os-brick/commit/?id=7d995b6cf6552c1119dcde9f7cdf2c5a05b3b92b
Submitter: Zuul
Branch: master

commit 7d995b6cf6552c1119dcde9f7cdf2c5a05b3b92b
Author: Gorka Eguileor <email address hidden>
Date: Thu Jun 18 21:05:05 2020 +0200

    RBD: Fix check_valid_device

    The check_valid_device method of the RBD connector doesn't work for
    locally attached volumes (using krbd) because it only has code for
    handles.

    This patch adds code to handle the check of locally attached RBD volumes
    running the code as root and as the current user.

    In order to preserve current behavior we don't change the code for
    checking valid handles, which means we are ignoring the run_as_root
    parameter.

    Closes-Bug: #1884552
    Related-Bug: #1883720
    Change-Id: Iedf1d4678eeef438ac4f03a61f5f91f3a225c3fd