When I run manually the diskspace -v, it reports nothing has been deleted.
But when I use find to look for RRD files older than 30 days, it reports more than 10,000.
What are abandoned host files?
For instance, a Linux file system changed its mount point directory. Therefore its check name had to be changed from fs_/old to fs_/new and their old RRD files are still found. Is that an example abandoned host file?