On 10/11/2010 05:30 PM, Stefan Hajnoczi wrote:
>
> It was discussed before, but I don't think we came to a conclusion. Are
> there any circumstances under which you don't want to set the
> QED_CF_BACKING_FORMAT flag?
I suggest the following:
QED_CF_BACKING_FORMAT_RAW = 0x1
When set, the backing file is a raw image and should not be probed for
its file format. The default (unset) means that the backing image file
format may be probed.
Now the backing_fmt_{offset,size} are no longer necessary.
Should it not be an incompatible option? If the backing disk starts
with a format magic, it will be probed by an older qemu, incorrectly.
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