Open Stack

We eagerly announce the release of:

cinder 20.2.0: OpenStack Block Storage

This release is part of the yoga stable release series.

The source is available from:

    https://opendev.org/openstack/cinder

Download the package from:

    https://tarballs.openstack.org/cinder/

Please report issues through:

    https://bugs.launchpad.net/cinder/+bugs

For more details, please see below.

20.2.0
^^^^^^


New Features
************

* Dell EMC PowerStore driver: Report trimming/discard support to
  Nova and Cinder.

* Dell EMC PowerMax driver: Report trimming/discard support to Nova
  and Cinder.

* Dell EMC PowerFlex driver: Report trimming/discard support to Nova
  and Cinder on thin volumes that don't have snapshots.  Not doing
  trim on volumes with snapshots is the vendor's recommendation, but
  can be overriden with the "report_discard_supported" configuration
  option.


Upgrade Notes
*************

* We introduced a new config parameter, "reserved_image_namespaces",
  that allows operators to set the image properties to filter out from
  volume image metadata by namespace when uploading a volume to
  Glance. These properties, if not filtered out, cause failures when
  uploading images back to Glance. The error will happen on Glance
  side when the reserved namespaces are used. This option is also
  useful when an operator wants to use the Glance property protections
  feature to make some image properties read-only.


Bug Fixes
*********

* Bug #1910767 (https://bugs.launchpad.net/cinder/+bug/1910767):
  Fixed the calculation of the allocated capacity for the volume
  manager. The fix takes into account all volumes that have a host
  setting, not just volumes with a status of 'in-use' or 'available'.

* Bug #1945500 (https://bugs.launchpad.net/cinder/+bug/1945500):
  Fixed an error when uploading to Glance a previously downloaded
  glance image when glance multistore is enabled. Glance reserves
  image properties in the namespace 'os_glance' for its own use and
  will not allow images to be created with these properties.
  Additionally, there are image properties, such as those associated
  with image signature verification, that are stored in a volume's
  image metadata, which should not be added to a new image when a
  volume is being uploaded as an image. Thus Cinder will no longer
  include any volume image metadata in the namespaces "os_glance" and
  "img_signature" when it creates an image in Glance. Furthermore,
  because the Glance property protections feature allows an operator
  to configure specific image properties as read-only, this fix adds a
  configuration option, "reserved_image_namespaces", that allows an
  operator to exclude additional image properties by namespace (the
  "os_glance" and "img_signature" namespaces are *always* excluded).

* Bug #2008259 (https://bugs.launchpad.net/cinder/+bug/2008259):
  Fixed the volume create functionality where non-admin users were
  able to create multiattach volumes by providing the *multiattach*
  parameter in the request body. Now we can only create multiattach
  volumes using a multiattach volume type, which is also the
  recommended way.


Other Notes
***********

* Removed the ability to create multiattach volumes by specifying
  *multiattach* parameter in the request body of a volume create
  operation. This functionality is unsafe, can lead to data loss, and
  has been deprecated since the Queens release. The recommended method
  for creating a multiattach volume is to use a volume type that
  supports multiattach.  By default, volume types can only be created
  by the operator.  Users who have a need for multiattach volumes
  should contact their operator if a suitable volume type is not
  available.

Changes in cinder 20.1.0..20.2.0
--------------------------------

d4535c774 Remove multiatttach request parameter
f2faf7d70 Filter reserved image properties
8c4d7bf01 [stable-only] Pin tox <4
aa920e2fd Bugfix: Account for consumed space better
8c3822c92 DEMC: Add support for trim/discard


Diffstat (except docs and test files)
-------------------------------------

.zuul.yaml                                         |  2 +
api-ref/source/v2/parameters.yaml                  |  9 ---
api-ref/source/v2/volumes-v2-volumes.inc           |  1 -
api-ref/source/v3/parameters.yaml                  |  9 ---
api-ref/source/v3/volumes-v3-volumes.inc           |  1 -
cinder/api/schemas/volumes.py                      |  6 ++
cinder/api/v2/volumes.py                           |  9 ---
cinder/api/v3/volumes.py                           | 16 +++---
cinder/image/image_utils.py                        | 46 +++++++++++++++
cinder/scheduler/filter_scheduler.py               | 13 -----
.../drivers/dell_emc/powermax/test_powermax_fc.py  |  1 +
.../dell_emc/powermax/test_powermax_iscsi.py       |  2 +
cinder/volume/api.py                               |  6 +-
cinder/volume/drivers/dell_emc/powerflex/driver.py | 14 ++++-
cinder/volume/drivers/dell_emc/powermax/common.py  |  1 +
cinder/volume/drivers/dell_emc/powermax/fc.py      |  4 +-
cinder/volume/drivers/dell_emc/powermax/iscsi.py   |  4 +-
.../volume/drivers/dell_emc/powerstore/adapter.py  |  2 +
.../volume/drivers/dell_emc/powerstore/driver.py   |  3 +-
cinder/volume/flows/api/create_volume.py           | 12 +---
cinder/volume/manager.py                           |  4 +-
.../notes/bug-1910767-00f20702f5fc96db.yaml        |  7 +++
releasenotes/notes/demc-trim-bb2165f74a5703a6.yaml | 13 +++++
...reserved-image-properties-9519ddc080e7ed1a.yaml | 28 +++++++++
...multiattach-request-param-4444e02533f919da.yaml | 20 +++++++
tox.ini                                            |  4 +-
30 files changed, 256 insertions(+), 129 deletions(-)