tor uses /var/lib/tor to store both persistent data such as fingerprint and stats, as well as cache-type data. (diff-cache, cache-* files). It would be appropriate to move the cache data to /var/cache instead. #/etc/tor/torrc: DataDirectory /var/lib/tor/data CacheDirectory /var/cache/tor There is also a tor bug tracker issue, that lead to the CacheDirectory config option: https://trac.torproject.org/projects/tor/ticket/22703 https://lists.torproject.org/pipermail/tor-relays/2017-November/013543.html Reproducible: Always