Hey,
I had a few troubles installing proxmox so I decided to do a full reinstall. Now I need to create my old containers again. I have all the files but I am still not sure how I would tell proxmox where to find them.
I need all containers from id 100 to 105.
First, if you have not already done so, add the lvmthin to your storage config: pvesm add lvmthin data --vgname data --thinpool data
Then you can recreate the container configuration files in /etc/pve/lxc/.
The configuration for container 100 may be something like (/etc/pve/lxc/100.conf ):