Re: [Qemu-devel] [RFC] introduce a dynamic library to expose qemu block API

[Wenchao Xia <xiawenc@linux.vnet.ibm.com>]

于 2012-7-13 17:27, Christoph Hellwig 写道:
> On Fri, Jul 13, 2012 at 10:13:15AM +0100, Stefan Hajnoczi wrote:
>> How is that different from all the qemu-io commands?
>
> qemu-io has no modes to just dumb the output without additional
> information / statistics or for the write case just take user input
> instead of a pattern.  I actually tried to add raw arguments to
> qemu-io, which still worked ou ok for reads but started to get
> fairly ugly for the write.
>
> What I use in production right now is a trivial qemu-cat tool that
> just does the raw reads and writes, but I think adding it as a new
> sub command to qemu-img instead of another tool seems a bit cleaner.
>
> If you and Kevin or Anthony disagree and want the qemu-cat tool I can
> submit a patch for that instead.
>
   That seems one user case the library should support. The library is
supposed to do more to expose generic block library which qemu device
emulator have used, the ideal expect is that other program linked with
the library could operate image the same way as qemu core.



-- 
Best Regards

Wenchao Xia