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Virtualization Guide › Hypervisor-independent features
ContentsContents
Virtualization Guide
  1. Preface
  2. I Introduction
    1. 1 Virtualization technology
    2. 2 Virtualization scenarios
    3. 3 Introduction to Xen virtualization
    4. 4 Introduction to KVM virtualization
    5. 5 Virtualization tools
    6. 6 Installation of virtualization components
  3. II Managing virtual machines with libvirt
    1. 7 libvirt daemons
    2. 8 Preparing the VM Host Server
    3. 9 Guest installation
    4. 10 Basic VM Guest management
    5. 11 Connecting and authorizing
    6. 12 Advanced storage topics
    7. 13 Configuring virtual machines with Virtual Machine Manager
    8. 14 Configuring virtual machines with virsh
    9. 15 Enhancing virtual machine security with AMD SEV-SNP
    10. 16 Migrating VM Guests
    11. 17 Xen to KVM migration guide
  4. III Hypervisor-independent features
    1. 18 Disk cache modes
    2. 19 VM Guest clock settings
    3. 20 libguestfs
    4. 21 QEMU guest agent
    5. 22 Software TPM emulator
    6. 23 Creating crash dumps of a VM Guest
  5. IV Managing virtual machines with Xen
    1. 24 Setting up a virtual machine host
    2. 25 Virtual networking
    3. 26 Managing a virtualization environment
    4. 27 Block devices in Xen
    5. 28 Virtualization: configuration options and settings
    6. 29 Administrative tasks
    7. 30 XenStore: configuration database shared between domains
    8. 31 Xen as a high-availability virtualization host
    9. 32 Xen: converting a paravirtual (PV) guest into a fully virtual (FV/HVM) guest
  6. V Managing virtual machines with QEMU
    1. 33 QEMU overview
    2. 34 Setting up a KVM VM Host Server
    3. 35 Guest installation
    4. 36 Running virtual machines with qemu-system-ARCH
    5. 37 Virtual machine administration using QEMU monitor
  7. VI Troubleshooting
    1. 38 Integrated help and package documentation
    2. 39 Gathering system information and logs
  8. Glossary
  9. A Configuring GPU Pass-Through for NVIDIA cards
  10. B GNU licenses
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Applies to openSUSE Leap 15.7

Part III Hypervisor-independent features Edit source

Revision History
2025-06-17
18 Disk cache modes

19 VM Guest clock settings

Keeping the correct time in a VM Guest is one of the more difficult aspects of virtualization. Keeping the correct time is especially important for network applications and is also a prerequisite to do a live migration of a VM Guest.

20 libguestfs

Virtual Machines consist of disk images and definition files. Manually accessing and manipulating these guest components (outside of normal hypervisor processes) is possible, but inherently dangerous and risks compromising data integrity. libguestfs is a C library and a corresponding set of tools designed for safely accessing and modifying Virtual Machine disk images—outside of normal hypervisor processes, but without the risk normally associated with manual editing.

21 QEMU guest agent

22 Software TPM emulator

23 Creating crash dumps of a VM Guest

→Chapter 18 Disk cache modes←Chapter 17 Xen to KVM migration guide
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