Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1)

[Dietmar Maurer]

> Which raises the question of how to distinguish whether it's a new request to
> bs that must go through the filters or whether it actually comes from the last
> filter in the chain. As you can see, we don't have a well thought out plan 
> yet,
> just rough ideas (otherwise it would probably be implemented already).

The question is if I should modify my backup patch (regarding block filters)?

IMHO, the current implementation is quite simple and easy to maintain. We can 
easily
convert it if someone comes up with a full featured 'block filter' solution.