Re: [Qemu-discuss] Live VM backup

[Fam Zheng]

On Tue, 08/29 18:32, Vincenzo Romano wrote:
> I'd like to move away from "another virtualization solution" to QEmu.
> I've more or less all the needed bits in my hands in order to define,
> run and manage QEmu VMs.
> What I am missing is the knowledge of how to backup a live VM.
> Of course, if I shutdown the VM, I can simply copy its files and the
> startup script on another QEmu host.
> But my main objective is to do the backup while the VM is running.
> I think I could use the snapshot feature, but have no idea on how to proceed.
> Any hint?

In short, just do what libvirt would do: use QMP and send 'drive-backup'
command.

This is a very good howto:

https://github.com/qemu/qemu/blob/master/docs/interop/live-block-operations.rst

Fam