Il 19/08/2012 00:02, ronnie sahlberg ha scritto:
> Neither of them work, basically because in
> block.c:find_image_format()
> 
> if bs->sg is not set in
> 
>  if (bs->sg || !bdrv_is_inserted(bs)) {
> 
> then we continue to
> 
>   ret = bdrv_pread(bs, 0, buf, sizeof(buf));
> 
> which fails with an error.
> So this patch is basically to prevent find_image_format() from trying
> to read from a blank disk.
> 
> Maybe there is a better way to do this?

Yeah, I think in this case find_image_format should just use raw.

Paolo

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