KVM Virtual Machine Sync

KVM Virtual machine synchronization can be done through base image

Main operation

1, create a new incremental disk

Qemu-img create-b base.img-f Qcow2 delta.img

2, modify the configuration file

Cp/etc/libvirt/qemu/base.xml/etc/libvirt/qemu/delta.xml

Vi/etc/libvirt/qemu/delta.xml

Modify fields such as <name><uuid><source File><mac address>

3. Define virtual machine Virsh define/etc/libvirt/qemu/delta.xml Virsh start delta based on XML configuration

4. Synchronous disk

Qemu-img Commit Delta.img

Adding the corresponding control logic enables you to synchronize disks through Delta