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Mastering KVM Virtualization

You're reading from   Mastering KVM Virtualization Design expert data center virtualization solutions with the power of Linux KVM

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Product type Paperback
Published in Oct 2020
Publisher Packt
ISBN-13 9781838828714
Length 686 pages
Edition 2nd Edition
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Authors (4):
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Humble Devassy Chirammal Humble Devassy Chirammal
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Humble Devassy Chirammal
Prasad Mukhedkar Prasad Mukhedkar
Author Profile Icon Prasad Mukhedkar
Prasad Mukhedkar
Vedran Dakic Vedran Dakic
Author Profile Icon Vedran Dakic
Vedran Dakic
Anil Vettathu Anil Vettathu
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Anil Vettathu
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Toc

Table of Contents (22) Chapters Close

Preface 1. Section 1: KVM Virtualization Basics
2. Chapter 1: Understanding Linux Virtualization FREE CHAPTER 3. Chapter 2: KVM as a Virtualization Solution 4. Section 2: libvirt and ovirt for Virtual Machine Management
5. Chapter 3: Installing KVM Hypervisor, libvirt, and oVirt 6. Chapter 4: Libvirt Networking 7. Chapter 5: Libvirt Storage 8. Chapter 6: Virtual Display Devices and Protocols 9. Chapter 7: Virtual Machines: Installation, Configuration, and Life Cycle Management 10. Chapter 8: Creating and Modifying VM Disks, Templates, and Snapshots 11. Section 3: Automation, Customization, and Orchestration for KVM VMs
12. Chapter 9: Customizing a Virtual Machine with cloud-init 13. Chapter 10: Automated Windows Guest Deployment and Customization 14. Chapter 11: Ansible and Scripting for Orchestration and Automation 15. Section 4: Scalability, Monitoring, Performance Tuning, and Troubleshooting
16. Chapter 12: Scaling Out KVM with OpenStack 17. Chapter 13: Scaling out KVM with AWS 18. Chapter 14: Monitoring the KVM Virtualization Platform 19. Chapter 15: Performance Tuning and Optimization for KVM VMs 20. Chapter 16: Troubleshooting Guidelines for the KVM Platform 21. Other Books You May Enjoy

Storage redundancy and multipathing

Redundancy is one of the keywords of IT, where any single component failure could mean big problems for a company or its customers. The general design principle of avoiding SPOF is something that we should always stick to. At the end of the day, no network adapter, cable, switch, router, or storage controller is going to work forever. So, calculating redundancy into our designs helps our IT environment during its normal life cycle.

At the same time, redundancy can be combined with multipathing to also ensure higher throughput. For example, when we connect our physical host to FC storage with two controllers with four FC ports each, we can use four paths (if the storage is active-passive) or eight paths (if it's active-active) to the same LUN(s) exported from this storage device to a host. This gives us multiple additional options for LUN access, on top of the fact that it gives us more availability, even in the case of failure.

Getting...

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