[pve-devel] Proposal: support for atomic snapshot of all VM disks at once

[Dietmar Maurer]

> I am the maintainer of StorPool’s external storage plugin for PVE[0] 
> which integrates our storage solution as a backend for VM disks. Our 
> software has the ability to create atomic (crash-consistent) snapshots 
> of a group of storage volumes. 

We already make sure that shaphots of a group of volumes are atomic at qemu level (VM is halted while snapshots are created), so I wonder
if there is any real advantage here?