There are no redundancy or regularly scheduled backups of database quarry on quarry-main-01. If that instance fails (could be any reason), we lose all of the SQL queries, which would be terrible.
There was past manual backups to /data/project NFS:
zhuyifei1999@quarry-main-01:/data/project$ ls -lh backup* dump* *.sql | uniq -rw-r--r-- 1 root root 29M Jul 17 2015 backup.sql -rw-r--r-- 1 root root 108M Aug 3 2016 dump-2016-08-03.sql -rw-r--r-- 1 root root 128M Sep 23 2016 dump-2016-09-23.sql -rw-r--r-- 1 root root 224M Sep 6 00:06 dump-2017-09-05.sql -rw-r--r-- 1 root root 89M May 20 2016 dump.sql
@chasemp said NFS is a bad idea and it's better to use something like rsync to another instance on another labvirt.