nova/releasenotes/notes/bug-1414895-8f7d8da6499f8e9...

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The ``[workarounds]/ensure_libvirt_rbd_instance_dir_cleanup`` configuration
option has been introduced. This can be used by operators to ensure that
instance directories are always removed during cleanup within the Libvirt
driver while using ``[libvirt]/images_type = rbd``. This works around known
issues such as `bug 1414895`_ when cleaning up after an evacuation and
`bug 1761062`_ when reverting from an instance resize.
Operators should be aware that this workaround only applies when using the
libvirt compute driver and rbd images_type as enabled by the following
configuration options:
* ``[DEFAULT]/compute_driver = libvirt``
* ``[libvirt]/images_type = rbd``
.. warning:: Operators will need to ensure that the instance directory
itself, specified by ``[DEFAULT]/instances_path``, is not shared between
computes before enabling this workaround, otherwise files associated with
running instances may be removed.
.. _bug 1414895: https://bugs.launchpad.net/nova/+bug/1414895
.. _bug 1761062: https://bugs.launchpad.net/nova/+bug/1761062