Skip to main content
Pure1 Support Portal

Pure Storage FlashArray Volume Driver for OpenStack Release Notes

This page contain release notes for the Pure Storage FlashArray Volume Driver for OpenStack® Cinder.

IPv6 support

When used with FlashArrays running Purity 4.9.0 or higher, all Pure Storage OpenStack Cinder Driver releases support IPv6. For full IPv6 functionality, the underlying platform where the Pure Cinder driver is deployed must also support IPv6.

OpenStack Release Timeline

Release Release Date Driver Versions
Ocata February, 2017 PureISCSIDriver    6.0.x    
PureFCDriver        4.0.x
Newton October, 2016 PureISCSIDriver    5.0.x    
PureFCDriver        3.0.x
Mitaka April, 2016 PureISCSIDriver    4.0.x    
PureFCDriver        2.0.x
Liberty October, 2015 PureISCSIDriver    3.0.x    
PureFCDriver         1.0.x
Kilo October, 2014 PureISCSIDriver    2.0.6

Release Notes for Ocata

Release: February, 2016

Deprecation Notices

  • Volume driver configuration settings are deprecated in the [DEFAULT] section
    Volume driver configuration settings must instead be placed in named backend sections. In the Ocata release, having volume driver configuration entries in the [DEFAULT] section generates an error.
  • Consistency groups are planned to be deprecated in a future release
    Generic volume groups, a new Cinder feature, are planned to replace consistency groups.

New Feature

  • Generic volume groups
    The Pure Storage volume drivers support consistent_group_snapshot_enabled type groups that work the same way as consistency groups did previously and are interpreted as representing Purity protection groups.

Release Notes for Newton

Release: October, 2016

Deprecation Notice

  • Volume driver configuration settings are deprecated in the [DEFAULT] section
    Volume driver configuration settings must instead be placed in named backend sections. In Newton, having volume driver configuration entries in the [DEFAULT] section generates a warning. In the OpenStack O release or a later OpenStack release, we expect this not to be supported and to generate an error.

Compatibility Notices

  • The driver now requires Purity Python REST Client version 1.6 (or later).
    This version is included when you install the Pure Storage Python SDK.

Release Notes for Mitaka

Release: October, 2016

Compatibility Notices

  • This release is compatible with Purity FlashArrays that support the Pure Storage REST API 1.2 or higher.
  • We recommend at a minimum Purity 4.0.20 or 4.1.0 for this release.
  • Some features require REST API 1.4 or higher.

New Features

  • Cinder v2.1 (cheesecake) Replication
    The Volume Drivers now support the host-based replication in Cinder with the ability to create replicated volumes and failover the Cinder Volume backend from one FlashArray to another
  • Improved Custom Scheduler Filter Functions
    There are now a significantly larger number of metrics exposed to the Cinder scheduler from the FlashArray which can be used in driver filter and/or goodness functions.
  • TRIM/Discard/UNMAP
    You can now allow for Cinder volumes to get TRIM/Discard/UNMAP commands when used with VM's provisioned with libvirt (KVM, qemu, etc as supported by hypervisor).
  • Automatic Volume Eradication
    New config option to allow for automatically eradicating Pure volumes upon deletion in Cinder. It is disabled by default.
  • Disable Automatic Oversubscription Ratio
    New config option to allow for disabling the automatic calculation of oversubscription ratio given to Cinder scheduler by the Volume Drivers. When disabled the drivers will respect the configured oversubscription ratio.
  • Validating HTTPS Management Requests
    The Cinder volume drivers now can be configured to validate HTTPS requests to the FlashArray management REST API. Custom certificates can be configured.

Release Notes for Liberty

Release: October, 2016

Compatibility Notices

  • This release is compatible with Purity FlashArrays that support the Pure Storage REST API 1.2 or higher.
  • We recommend at a minimum Purity 4.0.20 or 4.1.0 for this release.
  • Some new features (such as the Cinder import feature) require REST API 1.4 or higher.   

New Features

  • Fibre Channel Volume Driver
    In addition to the PureISCSIDriver, there is now a PureFCDriver which has the same level of support and functionality. Going forward all core driver features will be supported on both unless otherwise specified.
    This allows OpenStack deployments using Fibre Channel and Pure FlashArrays. The PureFCDriver is fully compatible with the Cinder Fibre Channel Zone Manager, which allows for automatic zoning.
  • Glance Image Caching
    Support has been added to Cinder to allow for caching Glance images. When enabled for Pure Drivers, Glance image caching provides significant performance improvements when creating volumes from images.
  • Custom Scheduler Filter Functions
    You can now specify custom filter functions for Cinder's scheduler. The most important use of this is to allow for filtering on total volumes on the Array to prevent hitting the volume limit. In the future, this can be expanded to allow for scheduling based on other metrics reported by the Array.
  • Manage/Unmanage Snapshot
    Two new API's for Cinder have been added in Liberty to allow for managing and unmanaging snapshots. This functionality is almost identical to the older manage/unmanage volume commands, but allows for using existing snapshots. Support has been added to the Pure drivers for this.
  • Create Consistency Group from Consistency Group (clone CG)
    A new API to allow for cloning Cinder Consistency Groups from a source Consistency Group or Consistency Group Snapshot was added in Liberty. Support for these has been added to the Pure drivers.

Fixes

  • Re-typing a volume that would cause a volume to stay on the same Pure FlashArray no longer requires a migration.
  • Cinder thin-provisioning now allows for individual volumes to be larger than the free space left on array.
  • Previously iSCSI volumes would not always be detached from initiators correctly. The migration to os-brick in Nova and Cinder has resolved this issue.

Release Notes for Kilo

Release: October, 2016

Compatibility Notices

  • This release is compatible with Purity FlashArrays that support the Pure Storage REST API 1.2 or higher.
  • We recommend at a minimum Purity 4.0.20 or 4.1.0 for this release.

New Features

  • Consistency groups
    Utilizes Pure protection groups to provide application consistent local snapshots for user specified volumes.
  • Automatic Host Creation
  • The cinder driver will automatically create the host it needs to connect volumes with the iSCSI network. Previously this was a manual step.
  • Improved CHAP support
  • Enable chap support via the pure_use_chap option for each backend in cinder.conf. This will automatically generate a username and random password when creating a host with automatic host creation. Passwords are stored in the Cinder database.
  • Support for Manage/Unmanage-exisiting commands in cinder CLI
  • Allows user to convert an existing volume/snapshot in the array to be a cinder managed volume. This action renames the volume on the array. Example command:
    cinder manage devstack@puredriver-1#puredriver-1 name=myfavoritevol
  • Using Pure Storage Python SDK internally
  • Self explanatory. Previously the driver was using a custom class to interface with the Purity array. Now it uses the standard PureStorage pypi module. Cinder nodes must have https://pypi.python.org/pypi/purestorage installed.
  • Thin-provisioning support with Cinder Scheduler
  • In Kilo the capacity filter for the scheduler has been made aware of thin provisioning/data reduction and backends can now report an over subscription ratio. Our driver calculates this value automatically based on current usage for an array. Where previously we recommended disabling the capacity filter it will now work correctly and see the benefits of the FlashArray's data reduction.

Resources