OpenStack Storage - an Overview

© 2014 IBM Corporation

Openstack Storagean Overview

Nilesh Bhosale([email protected])

mailto:[email protected]


Cloud Storage with OpenStack

What is OpenStack?

• 2

• In July 2010 Rackspace Hosting and NASA jointly launched an open-source cloud-software initiative known as OpenStack. The OpenStack project intended to help organizations offer cloud-computing services running on standard hardware. The community's first official release, code-named Austin, appeared four months later, with plans to release regular updates of the software every few months. The early code came from NASA's Nebula platform as well as from Rackspace's Cloud Files platform.



OpenStack delivers a massively scalable cloud operating system.

• https://www.openstack.org/software/

• OpenStack Mission: To produce the ubiquitous open source cloud computing platform that will meet the needs of public and private cloud

providers regardless of size, by being simple to implement and massively scalable.



Overview of OpenStack: Key components

Horizon

Nova

Cinder

Swift

Networking

Keystone

Glance

OsloShared Services



OpenStack: Storage components

Shared File System Storage

Cinder

Manila

Swift



OpenStack: Storage Types

Ephemeral Storage- associated with a single unique instance- ceases to exist when the instance is terminated

Persistent Storage

Block Storage – CinderShared File Storage – ManilaObject Storage - Swift



OpenStack Block Storage Service

Cinder



Cinder, OpenStack block storage



Cinder, OpenStack block storage



A deeper dive into Cinder



IBM NAS cinder driver

Providing block storage over NFS



Cinder Basic Functionality Includes

1. Create Volume2. Delete Volume3. Create Volume Snapshot4. List Snapshot5. Delete Volume Snapshot6. Create Volume from Snapshot7. Create Volume from Image 8. Create Volume from Volume (Clone) 9. Create Image from Volume10. Create Instance from Volume11. Attach Volume 12. Detach Volume 13. Extend Volume



OpenStack Shared File System Service

Manila



Manila Background and Goals

• Designed to provide shared filesystem service across OpenStack Compute instances• Vendor neutral API for provisioning and attaching filesystem-based storage such as NFS,

CIFS, and other network filesystems (including IBM's GPFS, LTFS, V7KU, others?)• Originally proposed to be part of Cinder. In June 2013 decision made to be independent

project.• Support for operations like:

– Create file system shares – Delete file systems shares– List, show, provide and deny access to file system shares– List share access rules – Create, list, and delete snapshots / clones of file systems shares– Coordinate mounting and unmounting of file system shares

• See: https://wiki.openstack.org/wiki/Shares_Service



Example



List of Use Cases

Share existing to Nova instances• Coordinate and provide shared access to previously (externally) established share / export• Create new and share to Nova instances• Create a new commonly accessible (across a defined set of instances) share / export• Bare-metal / non-virtualized consumption• Accommodate and provide mechanisms for consumption of shares by consumers of the

service that aren't mediated by Nova.• Cross-tenant sharing• Coordinate shares across tenants• Instance creation• Boot from share support in Nova. Analogous to Boot from Volume in Cinder.• Import pre-existing shares• Wrap Manila around pre-existing shares / exports so that they can be provisioned



Questions ?

Software

OpenStack Storage - an Overview