[pve-devel] create snapshots

[Dietmar Maurer]

> I wonder it is would be safe to call an external script to create the snapshot
> there?
> Or is there still some data in the qemu block driver cache, or the host cache?

vm_stop calls:

        bdrv_drain_all();
        bdrv_flush_all();

so that will at least try to flush data.

But I am quite unsure with nexenta - how can we make sure that the nexenta server
received all data before we do a snapshot?