Re: [Qemu-devel] [PATCH 0/2] qemu block changes: keep backing file format v2

[Jamie Lokier]

Uri Lublin wrote:
> I call "hidden image format" to the following format of a backing file name:
> "name\0format". Although it can be considered a hack, that's an easy
> way to support old images with new qemu as well as old qemu with new images
> (in which case probing would be done), without changing the qcow2 header.
...
> Changes from v1: use "name\0format" instead of "fmt:FMT:name"

Do you think there will be any other information added in future,
while wanting to remain compatible with old qemus (i.e. without
changing the qcow2 header)?

If so, "name\0format=FMT", and stop at the second \0 if there is one,
something like that?

-- Jamie