Disk usage shows much to high values

Configuration
1

Running Home Assistant Core 2021.11.5 my RPi installations shows a fast growing use of disk space.
Screenshot_20211206_110905
Having a SSD drive I still have a reserve, but obviously something is wrong. When I get folder infos I see a normal disk usage. So where are my 45 GB hidden used space used???


  OS Version:               Home Assistant OS 6.6
  Home Assistant Core:      2021.11.5

  Home Assistant URL:       http://homeassistant-r4.local:8123
  Observer URL:             http://homeassistant-r4.local:4357
[core-ssh ~]$ du -sh /*
4.0K    /addons
4.0G    /backup
7.8M    /bin
8.1M    /config
52.0K   /data
0       /dev
2.1M    /etc
4.0K    /home
4.0K    /init
4.7M    /lib
112.0K  /libexec
4.0K    /media
4.0K    /mnt
4.0K    /opt
0       /proc
8.0K    /root
224.0K  /run
84.0K   /sbin
8.0K    /share
4.0K    /srv
76.0K   /ssl
0       /sys
16.0K   /tmp
145.5M  /usr
84.0K   /var

Here direct from the terminal:

[core-ssh /]$ df -h /dev/sda8
Filesystem                Size      Used Available Use% Mounted on
/dev/sda8               116.7G     57.8G     54.1G  52% /backup

Hint/Question: I run Maria DB, where is the DV stored?

2

I could solve the problem by replacing the Hard-drive. The old one was a NVM disk (Transcend) the new one is a SSD and shows now over 80% free capacity. BTW the Raspi Driver for several USB to SSD adapters are still causing a lot of trouble in general. The old NVM disk ev. want into trouble because our bat power supply from the grid, which often has a low tension and peaks.

3

most likely somewhere around this:

/mnt/data/supervisor/addons/data/

the code itself references

# Persistent storage location
datadir=/data/databases

which could be in the container itself

4

Did u manage to fix it? I have the same issue.

image