
Pure Storage FlashArray's have a construct called a Volume Group within which volumes can be created. The volume group can have storage QoS levels assigned to it that limits the combined bandwidth and/or IOPs of all volumes within the volume group. Adding volume group support requires the use of vendor-specific volume type extra-specs which will allow a specific volume type to be limited to a volume group on a specified backend array. The volume group does not require QoS settings, but these can be applied using the vendor-specific volume type extra-specs. This patch provides the ability to create, manage and delete volume groups and to manage volumes in the volume group. Additonally, this patch will allow existing volumes in a volume group to be managed using the ``cinder manage`` command, including VVOLss that are in volume groups in non-replicated FlashArray pods. Retyping of volumes in and out of a volume group based volume type is also supported. Volume group based volumes can also be replicated as any other volume on a FlashArray and replication failover of these replicated volume group based volumes is also supported. Additional vendor-specific volume type extra specs are detailed in the updated driver documentation and in the release notes. Implements: blueprint pure-add-volume-groups Change-Id: I65c7241febec740d727f330b3bc0ef1b80abdd78
Cinder Configuration Documentation (source/configuration)
Introduction:
This directory is intended to hold any documentation that relates to how to configure Cinder. It is intended that some of this content be automatically generated in the future. At the moment, however, it is not. If you would like to work on this, please use Launchpad Bug #1847600 for tracking purposes. Changes to configuration options for Cinder or its drivers needs to be put under this directory.
The full spec for organization of documentation may be seen in the OS Manuals Migration Spec.