Pulp 3.9 changes CHUNKED_UPLOAD_DIR from an absolute path to a relative path. It must be within MEDIA_ROOT and there's no need to manage it. Pulp defaults are correct and overriding it is not recommended upstream.
This does rely on a fix in Pulpcore 3.9.1.
Technically older versions will continue to work but the upload directory may not exist and the pulp user may not have permission to create it. Rather than documenting these, it's chosen to only support the latest version. This also saves CI resources.
Support Pulp 3.9, drop earlier versions
Pulp 3.9 changes CHUNKED_UPLOAD_DIR from an absolute path to a relative
path. It must be within MEDIA_ROOT and there's no need to manage it.
Pulp defaults are correct and overriding it is not recommended upstream.
This does rely on a fix in Pulpcore 3.9.1.
Technically older versions will continue to work but the upload
directory may not exist and the pulp user may not have permission to
create it. Rather than documenting these, it's chosen to only support
the latest version. This also saves CI resources.