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Learning Ceph

You're reading from   Learning Ceph Unifed, scalable, and reliable open source storage solution

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Product type Paperback
Published in Oct 2017
Publisher
ISBN-13 9781787127913
Length 340 pages
Edition 2nd Edition
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Authors (4):
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Karan Singh Karan Singh
Author Profile Icon Karan Singh
Karan Singh
Bryan Stillwell Bryan Stillwell
Author Profile Icon Bryan Stillwell
Bryan Stillwell
Anthony D'Atri Anthony D'Atri
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Anthony D'Atri
Vaibhav Bhembre Vaibhav Bhembre
Author Profile Icon Vaibhav Bhembre
Vaibhav Bhembre
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Toc

Table of Contents (12) Chapters Close

Preface 1. Introducing Ceph Storage FREE CHAPTER 2. Ceph Components and Services 3. Hardware and Network Selection 4. Planning Your Deployment 5. Deploying a Virtual Sandbox Cluster 6. Operations and Maintenance 7. Monitoring Ceph 8. Ceph Architecture: Under the Hood 9. Storage Provisioning with Ceph 10. Integrating Ceph with OpenStack 11. Performance and Stability Tuning

Ceph Block Device (RADOS Block Device)


Many deployments using platforms such as OpenStack or DigitalOcean manage and attach RBD images at the virtualization layer, so they appear to the guest operating system through SCSI or Virtio drivers. Here we'll also explore the use of the Linux kernel driver on arbitrary, even bare metal, systems.

The RADOS Block Device (RBD)—formerly known as the Ceph Block Device—provides block-based persistent storage to Ceph clients. The block device is presented as a traditional drive on the client machine. Such a drive can be used in various ways. It can be used as a raw block device or as a filesystem by partitioning, formatting, and subsequently mounting it.

RBD makes use of the librbd library and stores blocks of data striped over multiple OSDs in a Ceph cluster. RBD is built on the fundamental RADOS layer of Ceph. Thus every block device is spread over multiple Ceph nodes and delivers high performance and excellent reliability.

RBD is rich with enterprise-class...

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