On Fri, Nov 3, 2023 at 5:15 AM Sverdlin, Alexander
<[email protected]> wrote:
>
> Hello Bruce,
>
> thanks for the quick reply!
>
> On Thu, 2023-11-02 at 15:13 -0400, Bruce Ashfield wrote:
> > > My current understanding is that
> > > meta-virtualization/recipes-kernel/linux/linux-yocto_virtualization.inc
> > > makes an assumption that any type=kmeta will point to upstream
> > > git://git.yoctoproject.org/yocto-kernel-cache but this doesn't hold
> > > for my use case.
> >
> > close.
> >
> > The support assumes that if something is on the src_uri named
> > "kernel-cache" that it is a complete, similarly formatted repository
> > to the upstream / centralized one that I maintain
> >
> > If that is found, it is preferred over the yocto-kernel-cache provided
> > by the yocto-cfg-fragments recipe.
>
> [...]
>
> > > The only type=kmeta is my local file:// storage and the following
> > > linux-yocto_virtualization.inc part leads to fetch failure (fetch
> > > from Internet not expected/forbidden):
> > >
> > > # if kernel-yocto has been inherited (how we can check for configuration
> > > # fragment merging suport at the moment, then add a dependency on the
> > > # configuration fragment repository. This allows us to be sure that our
> > > # features can be enabled via the fragments
> > > do_kernel_metadata[depends] += "${@['', 
> > > 'yocto-cfg-fragments-native:do_populate_sysroot'][(bb.data.inherits_class('kernel-yocto',
> > >  d))]}"
> > >
> > > Summary: 1 task failed:
> > > virtual:native:.../projects/ccp-sd-virt/../../meta-virtualization/recipes-kernel/linux/yocto-cfg-fragments.bb:do_fetch
> >
> > At a glance, I'm not seeing how your local kmeta is causing
> > the full fragments recipe to fail to fetch.
> >
>
> Fetch failure is expected, as there is simply no access to outside world and
> all expected packages are mirrored.
> Now the real issue is that providing local type=kmeta pulls
> git://git.yoctoproject.org/yocto-kernel-cache and currently we require no
> of the upstream fragments, so there is no point in mirroring the 
> yocto-kernel-cache
> repo just to satisfy fetch as we don't require these features.

if you are enabling the virtualization distro feature, and are including
meta-virtualization, that repository is a requirement. That's how it
ensures that subtle runtime errors don't creep in with incorrect kernel
configurations.

So why not just mirror it ?

>
> Currently I see no way to control this behaviour...
>
> > > When I read the comment "if the kernel-yocto meta-data routine 
> > > automatically
> > > starts to add the recipe-sysroot-native..." I get a feeling that
> > > this feature is still "work in progress". Are there any further 
> > > developments
> > > I could test in this direction?
> >
> > There's nothing that would fix that issue. The in-progress part of that
> > is that I plan to remove all of the local fragments in the virtualization
> > layer and rely on the cloned kernel-cache from that recipe.
> >
> > I don't suppose there's a layer I can look at which has your fragments
> > and the related kernel bbappend ? I'd like to reproduce the issue
> > locally so I can debug it in more detail.
>
> I cannot easily point you to something publicly available... But roughly it's 
> a
> combination of meta-virtualization and a kernel recipe derived from 
> kernel-yocto.bbclass.
>
> Now I long as one doesn't have any type=kmeta, meta-virtualization doesn't 
> pull
> git://git.yoctoproject.org/yocto-kernel-cache and adding
> "file://features/debug;type=kmeta;destsuffix=features/debug" to SRC_URI causes
> yocto-kernel-cache to be pulled even though there is no logical reason for 
> this.

That's not what my local tests show. It is keying off an inherit of
kernel-yocto,
not kmeta, but even by extension, seeing that fragment merging is available
(whether keyed of kmeta or the inherit of kernel-yocto), that is the logic as to
why it pulls it in (and the use of it is what I explained above).

Unless I have a way to see the issue locally, I can't easily address it (if
required).

Bruce

>
> --
> Alexander Sverdlin
> Siemens AG
> www.siemens.com



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