Current Series Release Notes¶

28.0.0.0rc1-8¶

With the fix for Bug #2142083, starting from os-brick version 6.15.0 or later, users can configure the PowerFlex san_username in the /opt/emc/scaleio/openstack/connector.conf file. This allows volume detach operations to succeed even if the PowerFlex san_username is changed. This issue only affects legacy attached volumes. New volume attachment and detachment operations will not encounter this issue since the mapping happens on the Cinder side.

PowerFlex Driver Bug #2142083: Fixed an issue where volume detach operations failed after changing the PowerFlex san_username. Previously, the PowerFlex san_username was stored in the Nova block_device_mapping table and reused during detach operations. With this fix, the driver now reads the san_username from the connector.conf file instead.

Fixed performance issues in the Hitachi HBSD driver by adding caching and request batching. Caching is enabled by default, and can be disabled by setting hitachi_rest_use_object_caching to False in cinder.conf. With a 4 port configuration, this patch offers a roughly 70% increase in performance when host groups are managed by the driver, and a 90%+ increase in performance when using custom configured host groups (after the cache has been built).