Re: [yocto] image class got error from copyhardlinktree/tar during migration to whinlatter

On 10/10/25 13:54, Peter Bergin via lists.yoctoproject.org wrote:
> Hi,
>
> I'm working on uprev for a layer from scarthgap to whinlatter. In the 
> layer there is a custom image class that will take part om the rootfs 
> and make a separate image of. First step is to copy out that part to a 
> separate directory before creating an image file. The function is using 
> copyhardlinktree from 'meta/lib/oe/path.py'. It has worked well in 
> scarthgap but when building in whinlatter I get this error:
>
>               0106:
>               0107:    _from = 
> os.path.realpath(os.path.join(d.getVar("IMAGE_ROOTFS"), "data"))
>               0108:    _to = 
> os.path.realpath(os.path.join(d.getVar("WORKDIR"), "data.copy.%s" % 
> d.getVar('BB_CURRENTTASK')))
>               0109:
>           *** 0110:    copyhardlinktree(_from, _to)
>               0111:
>          ...
>          Subprocess output:
>          tar: ./mydir: Cannot change ownership to uid 0, gid 0: Invalid 
> argument
>          tar: .: Cannot change ownership to uid 0, gid 0: Invalid argument
>          tar: Exiting with failure status due to previous errors
>
> The directory 'mydir' is owned by root user in my target file system. I 
> would like to check if someone have seen similar things when going to 
> newer versions? Or if someone have an idea about the root cause? I did a 
> workaround and used 'shutil.copytree' to avoid this error but is curios 
> to find the root cause and understand why it fails.
>

One idea:

There was one change recently, regarding how pseudo handles which paths
to handle[1].

In Scarthgap, everything is handled, unless it is explicitly excluded
with the PSEUDO_IGNORE_PATHS variable. ${WORKDIR} was not excluded by
default, and pseudo kept track of the permissions (except for the
specific subfolders that were excluded).

Currently nothing is handled, unless it is explicitly included with the
PSEUDO_INCLUDE_PATHS - and ${WORKDIR} is not included by default, so
pseudo doesn't keep track of it currently (except for he named subfolders).

I would try adding something like 'PSUEDO_INCLUDE_PATHS +=
"${WORKDIR}/data.copy"' or similar in local.conf, and see if it helps.

[1]:
https://git.openembedded.org/openembedded-core/commit/meta/conf/bitbake.conf?id=2502da81709f25de499277b28d33c915638c45f6