Rechunker removes some directories in /var, breaking some services

[onesaladleaf]

We build fedora-based images using bootc. After adding the rechunker we noticed some services breaking because of it removing directories in /var during the "Removing top level directory contents" step.

One example: rechunker removes /var/spool/at resulting in atd.service breaking because it can't find this directory. Some other services noticed to be affected are logrotate.service and plocate-updatedb.service

For some context, here's the hhd-dev/rechunk call in our workflow file: https://github.com/pocketblue/pocketblue/blob/8936423fbcb8113d68cf2be969a687e2d4714ce1/.github/workflows/helper-build-container.yml#L57

[antheas]

I will try to look at it tomorrow. FYI /var in ostree needs to be mounted to your root partition or a subvolume. So it needs to be empty

You should populate it using e.g. systemd temp dir

[antheas]

Rechunk tries to save some of var into a directory that acts as a var factory