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 -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list