Book Image

OpenStack Cloud Computing Cookbook

By : Egle Sigler, Kevin Jackson, Cody Bunch
Book Image

OpenStack Cloud Computing Cookbook

By: Egle Sigler, Kevin Jackson, Cody Bunch

Overview of this book

Table of Contents (19 chapters)
OpenStack Cloud Computing Cookbook Third Edition
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Working with Cinder snapshots


Within Cinder, volume snapshots provide a way to non-disruptively copy a volume. This allows for volume backups. It also enables more advanced backup features and provides the ability to boot an instance from a given snapshot or point in time.

In this section, we will show you how to create a snapshot, refresh a snapshot, and delete a given snapshot.

Getting ready

Ensure that you are logged in to the Ubuntu host where the Cinder command-line utilities are installed and source your OpenStack environment admin credentials.

How to do it...

  1. To create a snapshot, the volume must not be attached to an instance. To list your current volumes, you can use the cinder list command:

    $ cinder list
    

    Here's the output:

    Tip

    If the volume you wish to take a snapshot of has an in-use status, you will need to detach it using the instructions in the Detaching volumes from an instance recipe in this chapter.

  2. As our volume is available, we will create a snapshot of the volume using the cinder...