KVM mirror operation
QEMU img command
Create mirror qemu-img create
# Create an image with a device space of 10G
qemu-img create -f qcow2 centos7-guest.qcow2 10G
# Based on backing_file creates an image with a size of 20G. Use the - b parameter and - F to specify backing_file format
qemu-img create -F qcow2 -b /path/to/backing-kvm.img -f qco ...
Added by maskme on Sat, 26 Feb 2022 17:59:38 +0200
Cold and hot migration of kvm virtual machine
For static migration, you can save a complete client image snapshot on the host, then shut down or pause the client in the host, then copy the client image file to another host, and use the command when starting the client in the source host to start the copied image.
Added by pcoder on Wed, 09 Feb 2022 13:15:42 +0200
1, Introduction theory overview
1.1 introduction and theoretical overview of virtualization technology
Because there was a set of statistical data in the early EPA report: when EPA studied the energy efficiency of servers and data centers, it found that in fact, only 5% of the time of servers are working, and the rest of the time has bee ...
Added by hitman6003 on Tue, 08 Feb 2022 13:55:35 +0200
1. Experimental description
2. Check whether the hardware information supports virtualization
3. Closure of essential services
Install and configure KVM service
1. Install kvm dependent packages
2. Start libvirtd service
3. Create virtual machine
4.KVM v ...
Added by WebGeek182 on Tue, 08 Feb 2022 12:35:56 +0200
1, KVM introduction
1. Introduction to KVM
KVM The full name is kernel based virtual machine( Kernel-based Virtual Machine)，It's a Linux A kernel module that enables Linux Into a Hypervisor.
KVM Originally by an Israeli company Qumranet(//Developed by kju'ma,net / /). KVM was officially incorporated into the Linux 2.6.20 core in February 20 ...
Added by edawg on Tue, 08 Feb 2022 11:39:02 +0200