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[OpenStack Infra <1834659@xxxxxxxxxxxxxxxxxx>]

This issue was fixed in the openstack/nova queens-eol  release.

** Changed in: nova/queens
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1834659

Title:
  Volume not removed on instance deletion

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) queens series:
  Fix Released
Status in OpenStack Compute (nova) rocky series:
  Fix Released
Status in OpenStack Compute (nova) stein series:
  Fix Released
Status in OpenStack Compute (nova) train series:
  Fix Released

Bug description:
  Description
  ===========
  When we deploy a non-ephemeral instance (i.e. Creating a new volume), and 
  indicate "YES" in "Delete Volume on Instance delete",then delete the 
  instance, and volume driver terminate connection in cinder takes too long 
  to return, the volume is not removed.

  The volume status remains as "In-use" and "Attached to None on /dev/vda".
  For example:
  abcfa1db-1748-4f04-9a29-128cf22efcc5	- 130GiB In-use - Attached to None on /dev/vda

  Steps to reproduce
  ==================
  Please refer to this bug comment #2 below

  Expected result
  ===============
  Volume gets removed

  Actual result
  =============
  Volume remains attached

  Environment
  ===========
  Issue was initially reported downstream against Newton release (see 
  comment #1 below). Customer was using hitachi volume driver:
     volume_driver = cinder.volume.drivers.hitachi.hbsd.hbsd_fc.HBSDFCDriver
  As a note, the hitachi drivers are unsupported as of Pike (see cinder 
  commit 595c8d3f8523a9612ccc64ff4147eab993493892

  Issue was reproduced in a devstack environment runnning the Stein release.
  Volume driver used was lvm (devstack default)

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