Re: [Qemu-devel] Any tutorial to read/write in qcow2 format by programming way?

[lampahome]

I have some questions about qcow2
If I have 2 img A & B, and A is backing file of B.
Is the format(such as L1, L2, ref block...etc) different from A and B?



> No real tutorial other than reading the code and the file format
> specification (it's open source, after all).  See:
> block/qcow2*
> docs/interop/qcow2.txt
>
> Other potential resources to study:
>
> https://github.com/jnsnow/qcheck.git
>
> implements a rudimentary qcow2 image checker, although it still does not
> handle incremental snapshots. Then again, if you want to learn the qcow2
> image format, enhancing that tool would be a great asset in your quest.
>
>