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Re: [libvirt] [Qemu-devel] [PATCH v3] Add support for fd: protocol



Am 26.07.2011 15:02, schrieb Christoph Hellwig:
> I have to say I really hate it.  We've been working hard on getting rid
> of special cases in the qemu block layer, and this sprinkles them all
> over.  I'd recommend to fix your security model instead.

I think the problem here is more with the implementation that with the
intention.

I agree that you just can't do this. A patch adding support for a fd:
protocol should touch block/fd.c and nothing else. You can add some
supporting patches that extend the generic block layer to support e.g.
formats that can't reopen. However, if you touch the code of other block
drivers, you're doing it wrong.

Kevin


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