Related to "significantly reduce cache space needs" #235. But here it isn´t large chunks.archive.d, but rather txn.active + files. This is a cache for /home which has an excessive number of files, but its not that large:

merkaba:~> du -sh /home
164G /home

merkaba:> find /home | wc -l
2865746
merkaba:> find /home -type f | wc -l
2797574
merkaba:> find /home -type d | wc -l
64319
merkaba:> find /home/martin/.local/share/local-mail | wc -l
2128451
merkaba:> find /home/martin/.local/share/local-mail -type f | wc -l
2127093
merkaba:> find /home/martin/.local/share/local-mail -type d | wc -l
1358

Today a borgbackup run into exception due to insufficient free space (see issue "limit cache space needs to avoid out of space exceptions" #1765)

And really:

merkaba:~/.cache/borg> du -sch * | sort -rh | head -4
5,4G insgesamt
4,9G 673e17ea929[…]
420M 809d8850c0bd[…]
44M 723a580c358b[…]

merkaba:~/.cache/borg/673e17ea92925012e32db8d4d92c6ec18a2a08f490d431b068fe6bdaae073737> LANG=C du -sch * | sort -rh | head -5
4.9G total
2.3G txn.active
2.1G files
296M chunks.archive.d
253M chunks