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Learning OpenStack by Sunil Sarat, Alok Shrivastwa

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Working with Cinder

Cinder provides block store or the equivalent of an LUN as it were to a virtual machine, which can then format it at its will. We can create logical volumes with these disks or any other thing that we may want to do with the block storage.

Cinder service has a few components that will run in the management node and a few that will run on the storage node. The following components are part of Cinder service:

  • API
  • Scheduler
  • Volume

Out of these, the first two are installed in the controller node and the volume service is installed on the compute node. The following diagram shows the architecture and the communication pattern of the Cinder components:

The API receives the request from the client (either the Cinder client or an external ...

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