If you want /dev/vdb2 to be /home, you should just mount it on /home instead of /data, as I suggested above. symlinks can have surprising side effects.
You’re still probably going to run low on disk space for databases and logs, so you may want to symlink or bind mount the database data directory into /home (formerly /data).
Isn’t (the original) /home inside that 10Gb space?
I don’t want surprising side effects. I am aware that 10Gb is small and will run out of space soon. I need to digest your suggestion.
Have to end it here for today and will have another look tomorrow.
Had a quick AI check, it suggested:
sudo umount /data
sudo mv /home /home_backup
sudo mkdir /home
sudo mount /dev/vdb2 /home
sudo rsync -aXS /home_backup/. /home/.
sudo nano /etc/fstab
Add the following line:
/dev/vdb2 /home ext4 defaults 0 2
Save and exit the editor.
df -h
sudo rm -rf /home_backup
Is that correct?
I don’t know where it is. If you followed the steps you suggested you were following above to move the contents of /home to data and then symlink, your data would now be in /data/home, I guess?
If you then deleted /home so you could make the symlink, you’d need to remake /home as a directory (empty), so you can mount /dev/vdb2 on that mount point. You mount a filesystem on a directory path, so there would need to be a /home to mount it on.
Based on what you said previous, you would need to mount /dev/vdb2 on /home (also unmount /data) and move the files from /home/home to just /home.
Took a while and with some support from MS Copilot it’s working now.
Please post the solution, one of the reasons for forums is to search for solutions.
This was my plan. However, in the end I made so many changes that I lost track.
Even though I have the server space now, email works, the websites still do not work. Can’t start Apache due to SSL errors (for now I use Cloudflare SSL, will use Letsencrypt later)
Doh! Now Webmin seems to be gone - how I get that back?
OK, logout and login again as root 
After commenting all SSL related lines from the Apache *.comf I can start Apache - but get Cloudflare SSL handshake failed error.
You really need to start over. Seriously. Get the basics first. Get help from your provider to properly set up the distro of choice. Having a huge /data directory by default is just plain wrong.
I’m not sure partitions on a modern Linux distro is really necessary. Back in the days of ext2 file systems it made a lot of sense.
It’s what I did…
Now I get a new error while Checking Configuration:
No Ethernet interface could be automatically found on your system. Use the [module configuration] page to set the interface manually
ifconfig
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 3477 bytes 1558927 (1.4 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3477 bytes 1558927 (1.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
net0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 130.255.55.161 netmask 255.255.255.0 broadcast 130.255.55.255
inet6 fe80::c0bc:dff:fec5:455a prefixlen 64 scopeid 0x20<link>
inet6 2a02:e00:ffec:b14::2 prefixlen 64 scopeid 0x0<global>
inet6 2a02:e00:ffec:b14::a prefixlen 64 scopeid 0x0<global>
ether c2:bc:0d:c5:48:0a txqueuelen 1000 (Ethernet)
RX packets 1338522 bytes 743160383 (708.7 MiB)
RX errors 0 dropped 305 overruns 0 frame 0
TX packets 32895 bytes 9231856 (8.8 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
I see net0 in the network config page. What I need to set?
Where to set? Here…
Please create a new topic for the new issue
This topic is about not enough free space.
Final comment:
I did start fresh with a new Debian 12 install and expanded the storage of /home with that /data mapping thing (see message above)
Generally Copilot/ChatGPT etc. do give useful hints and can be a great help.
First virtual domain created, moved the postfix mailboxes from old postfix 2.6.6 to 3.7.11 manually (/home/domain/homes + /home/domain/Maildir), works fine with Roundcube.
Thanks for all support.
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