Add "known issues" to xena release note
Change-Id: I5074495ef7925e139b7928136b00eeb744ea946b
Brian Rosmaita
2 years ago
| 0 | --- | |
| 1 | issues: | |
| 2 | - | | |
| 3 | It is currently possible to manage a volume to an encrypted volume | |
| 4 | type, but that is not recommended because there is no way to supply | |
| 5 | an encryption key for the volume to cinder. Un-managing a volume | |
| 6 | of an encrypted volume type is already prevented, and it is expected | |
| 7 | that management to an encrypted type will similarly be blocked in a | |
| 8 | future release. This issue is being tracked as `Bug #1944577 | |
| 9 | <https://bugs.launchpad.net/cinder/+bug/1944577>`_. | |
| 10 | - | | |
| 11 | **Cinder use of cgroups v1** | |
| 12 | ||
| 13 | This note applies to deployments that are using the cinder | |
| 14 | configuration option ``volume_copy_bps_limit`` in its non-default | |
| 15 | value (the default is 0). | |
| 16 | ||
| 17 | The cinder-volume service currently depends on `Linux Kernel | |
| 18 | Control Groups (cgroups) version 1 | |
| 19 | <https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v1/cgroups.html>`_ | |
| 20 | to control i/o throttling during some volume-copy and image-convert | |
| 21 | operations. Some Linux distributions, however, have changed to using | |
| 22 | `cgroup v2 | |
| 23 | <https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html>`_ | |
| 24 | by default and may have discontinued cgroups v1 support completely. | |
| 25 | Consult your Linux distribution's documentation for details. | |
| 26 | ||
| 27 | The cinder team is working on a throttling solution using cgroup | |
| 28 | v2, but it was not ready at the time of this release. The solution | |
| 29 | is expected to be backported to a future release in the Xena series. | |
| 30 | This issue is being tracked as `Bug #1942203 | |
| 31 | <https://bugs.launchpad.net/cinder/+bug/1942203>`_. | |
| 32 | - | | |
| 33 | There is a race condition between the delete attachment and delete | |
| 34 | volume operations that has been observed when running cinder-csi. | |
| 35 | This race can leave deleted volumes stuck as attached to instances. | |
| 36 | The cinder team is working on a solution which is expected to be | |
| 37 | backported to a future release in the Xena series. The issue is | |
| 38 | being tracked as `Bug #1937084 | |
| 39 | <https://bugs.launchpad.net/cinder/+bug/1937084>`_. | |
| 40 | - | | |
| 41 | When the Ceph backup driver is used for the backup service, | |
| 42 | restoring a backup to a volume created on a non-RBD backend fails. | |
| 43 | The cinder team is working on a solution which is expected to be | |
| 44 | backported to a future release in the Xena series. The issue is | |
| 45 | being tracked as `Bug #1895035 | |
| 46 | <https://bugs.launchpad.net/cinder/+bug/1895035>`_. | |
| 47 | - | | |
| 48 | Creating a volume of an encrypted volume type from an image in | |
| 49 | the Image service (Glance) using the generic NFS driver results | |
| 50 | in an unusable volume. The cinder team is working on a solution | |
| 51 | which is expected to be backported to a future release in the | |
| 52 | Xena series. The issue is being tracked as `Bug #1888680 | |
| 53 | <https://bugs.launchpad.net/cinder/+bug/1888680>`_. |