[OE-core] Create more than one image with WIC

[Patrick Ohly]

On Tue, 2017-03-14 at 20:06 +0200, Ed Bartosh wrote:
> On Tue, Mar 14, 2017 at 06:49:45PM +0100, Patrick Ohly wrote:
> > 
> > > It's not a big deal to run wic sequentially to produce multiple images,
> > > but it will create more problems than it solves I believe. It will be slower and
> > > will make a mess in image naming in deploy directory.
> > 
> > I personally would prefer to support generating more than one wic image
> > per image recipe. The different output files could be distinguished with
> > an additional suffix (".efi.wic", ".live.wiC", etc.) where the suffix is
> > either specified by the WKS file or the configuration where the WKS file
> > is selected - the latter might be a bit more flexible.
> >
> 
> From my point of view ths would be against the current design of oe
> image building susbsystem. It would be also more complex and slower
> unless we'll find a way to dynamically generate multiple image creation
> tasks per one recipe and run them in parallel. In this case it will be
> even more complex.

That's a good point. However, directly sharing the content of the build
directory from different recipes is also against the OE design and
requires special attention, for example to suppressing the do_rootfs
task in one recipe and preventing do_rm_work in the other.

Either way, something that works out of the box might be useful.

-- 
Best Regards, Patrick Ohly

The content of this message is my personal opinion only and although
I am an employee of Intel, the statements I make here in no way
represent Intel's position on the issue, nor am I authorized to speak
on behalf of Intel on this matter.