OpenStack Cloud Computing Cookbook - Third Edition

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 ...