Yea, I think the space is getting eating up by rsync.
But I can't find where.
On this mirror server we where running rsync for MariaDB, besides the regular http & https.
Any trick to find only large files?
du -hs /*
Wasn't much of a help, and couldn't find any rsync.log with find.
What I have wound up doing was deleting the whole MariaDB directory, and am pulling from the master now to rebuild with rsync disabled.