Online migration of kvm virtual machines

Refer to: redhat Virtual Machine Management Manual
Environment:
Running VM vm01 on top44.example.com
Desktop38.example.com migration destination

1. Use nfs to share Virtual Machine images on top44.example.com
Vi/etc/exports
/Var/lib/libvirt/images * (rw, no_root_squash, sync)
/Etc/init. d/rpcbind restart
/Etc/init. d/nfs restart
Www.2cto.com
2. Mount the nfs shared directory on top38.example.com to ipvtop44.example.com.
Mount 192.168.0.44:/var/lib/libvirt/images // var/lib/libvirt/images/

3. Modify/etc/hosts in desktop38.example.com and desktop44.example.com.
192.168.0.38 255.top38.example.com
192.168.0.44 reply top44.example.com
Www.2cto.com
4. Use the virt-manager tool for Migration: www.2cto.com
5. On top38.example.com, run the command to migrate the VM vm01 to top44.example.com.