Re: [Qemu-devel] [RFC] qemu snapshot enchancement

[Dietmar Maurer]

> > Note: The proposed backup patches (already sent to the list) make
> > backups without creating internal/external snapshot. Consistency is
> guaranteed by using COW.
> >
>    I guess this can be implemented, or may already exist in 3rd party
> components, such as LVM2. 

We used LVM to provide snapshots for backups for more than 4 years now.
(in production at many customer sites).

It is a constant PITA. If interested, you can grab our support forum about 
problems
with LVM snapshots (http://forum.proxmox.com).

The new backup approach is much better an avoids most of the problems we had.
(the backup patches contains a list of advantages).