Ussuri Series Release Notes¶
Services using os-brick need to set the
lock_pathconfiguration option in their
[oslo_concurrency]section since it doesn’t have a valid default (related bug #1947370).
Bug #1944474: Fixed missing retries to reinitiate iSCSI connections with high concurrency of connections and with multipath enabled.
Bug #1947370: Fixed race conditions on iSCSI with shared targets and NVMe
Bug #1915678: Fix unhandled exception during iscsi volume attachment with multipath enabled that resulted in the cinder-volume service becoming stuck and requiring a restart.
Bug #1924652: Fix issue with newer multipathd implementations where path devices are kept in multipathd even after volume detachment completes, preventing it from creating a multipath device when a new device attachment is made shortly with the same volume device or the same device path.
This release fixes an issue that could cause data loss when the configuration enabling/disabling multipathing is changed on a compute when volumes are currently attached.
Bug #1921381: Fix disconnecting volumes when the use_multipath value is changed from the connect_volume call to the disconnect_volume call.
Bug #1897787: Fix Fibre Channel not flushing volumes on detach when a multipath connection was requested on their attach, but one was not found.
[bug 1862433] Fix an issue where platform id is needed to determine name of scsi disk.
Bug #1865754: the
RBDConnectorclass generates a temporary configuration file to connect to Ceph. Previously, os-brick did not include a
[global]section to contain the options it sets, but with the Octopus release (15.2.0+), Ceph has begun enforcing the presence of this section marker, which dates back at least to the Hammer release of Ceph. With this release, os-brick includes the
[global]section in the generated configuration file, which should be backward-compatible at least to Ceph Hammer.
Bug #1823200: Prior fixes for this bug changed the connection properties but did not take into account an upgrade scenario in which currently attached volumes had the old format connection properties and could fail on detatch with “KeyError: ‘config_group’”. This release updates the ‘scaleio’ connector to handle this situation. It is only applicable to deployments using a Dell EMC PowerFlex/VxFlex OS/ScaleIO backend.
Fix an incompatibility with ceph 13.2.0 (Mimic) or later, caused by a change in the output of
Improve WWN detection for arrays with multiple designators. (bug 1881608).
Improve iSCSI multipath detection to work even if we cannot find the volume’s WWN in sysfs. (bug 1881619).
The fix for Bug #1823200 requires that a configuration file be deployed on compute nodes, cinder nodes, and anywhere you would perform a volume attachment in your deployment, when using Cinder with a Dell EMC VxFlex OS backend. See the Dell EMC VxFlex OS (ScaleIO) Storage driver documentation for details about this configuration file.
Dell EMC VxFlex OS driver: This release contains a fix for Bug #1823200. See OSSN-0086 for details.
Bug #1823200: This release contains an updated connector for use with the Dell EMC VxFlex OS backend. It requires that a configuration file be deployed on compute nodes, cinder nodes, and anywhere you would perform a volume attachment in your deployment. See the Dell EMC VxFlex OS (ScaleIO) Storage driver documentation for details about the configuration file, and see OSSN-0086 for more information about the security vulnerability.
This release contains some minor driver fixes.
Please keep in mind that the minum version of Python supported by this release is Python 3.6.
Python 2.7 support has been dropped. Beginning with os-brick release 3.0.0, the minimum version of Python supported by os-brick is Python 3.6.
The Sheepdog project is no longer active and its driver has been removed from Cinder. The connector and Sheepdog related handling has now been removed from os-brick as well.
Fix an issue where SCSI LUN scans for FC were unnecessarily too broad. Now OS-Brick will not use wildcards unless it doesn’t find any target ports in sysfs and the Cinder driver doesn’t disable them.