Comment 7 for bug 1883671

Reviewed: https://review.opendev.org/739593
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=247e33af8fa1705b037e3343ec3b72a1b520c0c5
Submitter: Zuul
Branch: stable/ussuri

commit 247e33af8fa1705b037e3343ec3b72a1b520c0c5
Author: Sean Mooney <email address hidden>
Date: Thu Jul 2 10:43:08 2020 +0000

    catch libvirt exception when nodedev not found.

    This is a minimal fix to workaround instance where libvirt
    retruns stale data due to internal caching. In some cases
    libivrt can return stale data vai the nodedev api when the
    mac adress of an interface such as an sriov virtual function
    canages, i.e. when a mac adress is reset after a vm with
    a virtual funciton is migrated.

    Change-Id: Ic5e60c8e28263365fad5867e483b6ad55cee7281
    Partial-Bug: #1883671
    (cherry picked from commit af80c3ffd116837b296e79858595d42c893708a6)