This document provides an overview of OpenStack storage components, including Cinder (block storage) and Manila (shared file storage). It describes OpenStack's mission to produce an open source cloud computing platform that is simple to implement and massively scalable. Key OpenStack components are outlined, including Horizon, Nova, Cinder, Swift, Networking, Glance, Keystone, and Oslo. Cinder provides block storage functionality like creating, deleting, and attaching volumes. Manila provides a vendor-neutral API for provisioning and attaching various file-based storage systems and allows sharing of file systems across OpenStack compute instances.

1. © 2014 IBM Corporation
Openstack Storage
an Overview
Nilesh Bhosale
(nilesh.bhosale@in.ibm.com)

2. Cloud Storage with OpenStack
What is OpenStack?
• 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.
• 2
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3. Cloud Storage with OpenStack
OpenStack delivers a massively scalable cloud operating system.
• 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
• https://www.openstack.org/software/
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scalable.

4. Cloud Storage with OpenStack
Overview of OpenStack: Key components
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Horizon
Nova
Cinder
Swift
Networking
Glance
Keystone
Oslo
Shared Services

5. Cloud Storage with OpenStack
OpenStack: Storage components
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Shared File
System
Storage
Cinder
Manila
Swift

6. Cloud Storage with OpenStack
OpenStack: Storage Types
Ephemeral Storage
- associated with a single unique instance
- ceases to exist when the instance is terminated
Persistent Storage
Block Storage – Cinder
Shared File Storage – Manila
Object Storage - Swift
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7. Cloud Storage with OpenStack
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OpenStack
Block Storage Service
Cinder

8. Cloud Storage with OpenStack
Cinder, OpenStack block storage
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9. Cloud Storage with OpenStack
Cinder, OpenStack block storage
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10. Cloud Storage with OpenStack
A deeper dive into Cinder
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11. Cloud Storage with OpenStack
IBM NAS cinder driver
Providing block storage over NFS
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12. Cloud Storage with OpenStack
Cinder Basic Functionality Includes
1. Create Volume
2. Delete Volume
3. Create Volume Snapshot
4. List Snapshot
5. Delete Volume Snapshot
6. Create Volume from Snapshot
7. Create Volume from Image
8. Create Volume from Volume (Clone)
9. Create Image from Volume
10. Create Instance from Volume
11. Attach Volume
12. Detach Volume
13. Extend Volume
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13. Cloud Storage with OpenStack
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OpenStack
Shared File System Service
Manila

14. Cloud Storage with OpenStack
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
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15. Cloud Storage with OpenStack
Example
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16. Cloud Storage with OpenStack
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
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17. Cloud Storage with OpenStack
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Questions ?