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Ubuntu 20.04 Essentials

You're reading from   Ubuntu 20.04 Essentials A guide to Ubuntu 20.04 desktop and server editions

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Product type Paperback
Published in Aug 2020
Publisher Packt
ISBN-13 9781800568525
Length 328 pages
Edition 1st Edition
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Author (1):
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Neil Smyth Neil Smyth
Author Profile Icon Neil Smyth
Neil Smyth
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Table of Contents (38) Chapters Close

1. Introduction 2. A Brief History of Linux FREE CHAPTER 3. Installing Ubuntu on a Clean Disk Drive 4. Installing Ubuntu with the Network Installer 5. Dual Booting Ubuntu with Windows 6. Allocating Windows Disk Partitions to Ubuntu 7. A Guided Tour of the GNOME 3 Desktop 8. An Overview of the Ubuntu Cockpit Web Interface 9. Using the Bash Shell on Ubuntu 10. Managing Ubuntu Users and Groups 11. Managing Ubuntu systemd Units 12. Ubuntu Software Package Management and Updates 13. Ubuntu Snap Package Management 14. Ubuntu Network Management 15. Ubuntu Firewall Basics 16. Using gufw and ufw to Configure an Ubuntu Firewall 17. Basic Ubuntu Firewall Configuration with firewalld 18. Configuring SSH Key-based Authentication on Ubuntu 19. Ubuntu Remote Desktop Access with Vino 20. Ubuntu Remote Desktop Access with VNC 21. Displaying Ubuntu Applications Remotely (X11 Forwarding) 22. Using NFS to Share Ubuntu Files with Remote Systems 23. Sharing Files between Ubuntu and Windows Systems with Samba 24. An Overview of Virtualization Techniques 25. Installing KVM Virtualization on Ubuntu 26. Creating KVM Virtual Machines using Cockpit and virt-manager 27. Creating KVM Virtual Machines with virt-install and virsh 28. Creating an Ubuntu KVM Networked Bridge Interface 29. Managing KVM using the virsh Command-Line Tool 30. An Introduction to Linux Containers 31. Working with Containers on Ubuntu 32. Setting Up an Ubuntu Web Server 33. Configuring an Ubuntu Postfix Email Server 34. Adding a New Disk Drive to an Ubuntu System 35. Adding a New Disk to an Ubuntu Volume Group and Logical Volume 36. Adding and Managing Ubuntu Swap Space 37. Ubuntu System and Process Monitoring Index

26.4 Working with Storage Volumes and Storage Pools

When a virtual machine is created it will usually have associated with it at least one virtual disk drive. The images that represent these virtual disk drives are stored in storage pools. A storage pool can take the form of an existing directory on a local filesystem, a filesystem partition, physical disk device, Logical Volume Management (LVM) volume group or even a remote network file system (NFS).

Each storage pool is divided into one or more storage volumes. Storage volumes are typically individual image files, each representing a single virtual disk drive, but can also take the form of physical disk partitions, entire disk drives or LVM volume groups.

When a virtual machine was created using the previous steps, a default storage pool was created into which virtual machine images may be stored. This default storage pool occupies space on the root filesystem and can be reviewed from within the Cockpit Virtual Machine interface...

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