Request

The permissions should look like this:

root@vmpc05:~# ls -alh /var/lib/php5/sessions/
insgesamt 8,0K
drwx-wx-wt 2 root root 4,0K Okt 17 15:28 .
drwxr-xr-x 4 root root 4,0K Jun 10 14:03 ..

I really dont think this is just a permissions issue. There is something else going on with this system. Volker and I could probably fix it if we could login into the box for a few hours but neither of us have the time. A fresh install has a lot of benefits.

I don't know how you have done this, but you or a installed Debian package has corrupted your /var/lib/php5 directory privileges.

Your directory privileges must look like this:

# ls -alh /var/lib/php5/sessions/
insgesamt 12K
drwx-wx-wt 2 root root 4,0K Okt 25 09:22 .
drwxr-xr-x 4 root root 4,0K Apr 7 2016 ..

Use the chmod command with +/-t and +/-s options to set/remove the setuid and sticky bits. I can not provide you the whole command line because this requires to much time. This anomaly must be done by yourself and i have not seen this happen on any of my machines until now. Please understand that we can not provide support for self-induced problems.

Finally a new installation will be the best to fix your problem.

Zitat von mega-hz

I it possible (and how) to install a icecast2 server wich runs paralell to the omv-web-gui without trouble?

Please start a new post for your question.