Cloudron Forum

Thx for the hint. Will see what Hetzner support has to say.

It was not fail2ban - it was IPv6 connection which is failing, as IPv6 disabled (to ensure mail works well). Hetzner's supported provided a very quick and efficient verification / troubleshooting step: ssh -vvv -p 23 user@server - hope that will be of use for anyone else in the future.

@girish Ok, great! Thank you very much for the information. I really appreciate your time. Thanks again!

@nebulon Thank you for your response. Yes, it seems the issue is indeed with hardlinks. I have them enabled. I will try to wait for the Cloudron update, or I might consider using Borg for backups to the Storage Box. That should probably resolve the issue. Another option is using rsync with the -H switch, but I haven't tested it yet. Thank you very much for your help.

@nebulon Yeah I went so far to migrate to a fresh ubuntu installation to find out if there is something wrong on a system level but that didn't help either. Moving to an external drive did work though for some reason. But that's not what I want since that is a much more expensive solution…

Just purge contents of the folder or delete the folder and recreate it with the same permissions. Other bits of Linux sometimes put logs there.

I would recommend you to use WebDAV instead of CIFS it will be faster as WebDAV is more modern and appropriate for extended network (non LAN).