Re: [Qemu-devel] backing_file Path

[Kevin Wolf <kwolf@redhat.com>]

Am 07.11.2011 08:46, schrieb Zhi Hui Li:
> 
> when I trace the code of qemu-img.c， I found in the image file, the 
> backing_file use the relative path, I think Maybe it has some problems.
> 
> for example:
> 
> 1: qemu-img create -o backing_file=../xxxx aa.img 5G
> 
> 2: qemu-system-x86_64   aa.img
> 
> if you change aa.img's the path, the exec is wrong,it can't find the 
> backing_file path, because the backing_file use the relative path,
> Could we change the relative path to the absolute path?

No, we can't. That would break compatibility of qemu-img create with
older versions. Relative paths have well-defined semantics, they are
relative to the image file.

Kevin