[Please Help] Proxmox not working anymore after update.

[huawa]

I decided to update my old proxmox installation (4.4.49-1) today.
After updating (and fighting with the sources list and so on...), the server was at first not reachable any more.
I configured the network manually and can at least SSH into it again.
However, the webinterface and the virtual engines are not working anymore.
Can anybody please help and guide me on what i could check?!
If nothing works again, i would be glad to know where i can find my locally stored backups in the file system.

Edit:
When i try "pveversion -v" it tells me that the command is not found.
Also the /etc/pve/ directory is empty.

 

[huawa]

Am i right, that saving the entire "/var/lib" directory gives me a "backup" of all VMs that were installed and lets me install them on a fresh setup easily?

 

[aaron]

Did you follow the guides on how to upgrade to 5.x first and then to 6.x?

https://pve.proxmox.com/wiki/Upgrade_from_4.x_to_5.0
https://pve.proxmox.com/wiki/Upgrade_from_5.x_to_6.0

What are the contents of the /etc/apt/sources.list file and all files in /etc/apt/sources.list.d/ ?

Am i right, that saving the entire "/var/lib" directory gives me a "backup" of all VMs that were installed and lets me install them on a fresh setup easily?

Depends on how your storage was set up to store the VM disks.

 

[huawa]

Hi and thanks for the reply!
In the meantime, I made a backup of the entire harddisk and performed a fresh installation of the latest 6.2-1 version on my server.
The question now is, what files/directories i need to copy over to the new installation to get the orignal VMs up and running again?