Установка и настройка KVM в CentOS
Install and use CentOS 7 or RHEL 7 as KVM virtualization host
https://www.ovirt.org/ - KVM based virtualization system
https://www.linux-kvm.org/page/KSM - Kernel Samepage Merging
KVM: отключение и подключение устройств
https://kashyapc.fedorapeople.org/virt/add-network-card-in-guest.txt
Live Disk Snapshot Not Supported
Backup
https://serveradmin.ru/kvm-backup/
https://sandilands.info/sgordon/automatic-backup-of-running-kvm-virtual-machines
http://blackbird.si/hot-backup-for-kvm-libvirt-xen/
Резервное копирование виртуальных машин в среде гипервизора QEMU/KVM
https://serverfault.com/questions/714921/backup-of-running-kvm-qcow2-vps
https://serverfault.com/questions/530848/how-to-properly-back-up-a-live-qemu-kvm-vm
http://pof.eslack.org/2010/12/23/best-solution-to-fully-backup-kvm-virtual-machines/