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[OpenStack Infra <1899431@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/757448
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=4a4f12678af76101afac0ca15cc36bfa64017818
Submitter: Zuul
Branch:    master

commit 4a4f12678af76101afac0ca15cc36bfa64017818
Author: zhanghao <zhanghao2_yewu@xxxxxxxxxxxxxxxxxxxx>
Date:   Mon Oct 12 14:10:14 2020 -0400

    Fix virsh domifstat to get vhostuser vif statistics
    
    When a DPDK VM attaches an interface, libvirt can not automatically
    generate "<target dev='vhuXXX'/>" in XML file, which causes virsh
    domifstat query to fail.
    
    Change-Id: Id4e5b52af521b5f3a206e87bf024fd1e47fc4824
    Closes-Bug: #1899431


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1899431

Title:
  virsh domifstat can not get vhostuser vif statistics

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  How to reproduce this problem：
  1.Create a DPDK VM with a network(instance has a vhu01 vif)
  2.VM attaches an interface(instance has a vhu02 vif)

  virsh domifstat instance-XXX vhu01(success)

  virsh domifstat instance-XXX vhu02(failure)
  error: Failed to get interface stats instance-XXX vhu02
  error: invalid argument: invalid path, 'vhu02' is not a known interface

  When a DPDK VM attaches an interface, libvirt can not automatically
  generate "<target dev='vhuXXX'/>" in XML file.

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