Re: [Qemu-devel] [PATCH v4 4/6] introduce new vma archive format

[Dietmar Maurer]

> > Honestly, 64k*4G = 128T is not a limit for me. And we still have one
> > byte reserved, so we can have up to 1P per image, and up to 253 images.
> >
> > For now I have no plans to backup such large VMs.
> 
> 640k ought to be enough for anybody?
> 
> Code is easy enough to change that "works for now" can be good enough.
> Changing file formats and external interfaces is hard, though, so better get 
> it
> right the first time. I don't want to get patches for a new format in a year 
> or two
> just because 128T was enough for the first few users.

So what address space do you want - 64bit?