Problems in restoring LXCs backups from proxmox 8.4 to 9.1

C

Carontes

New Member
Jan 8, 2026
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Hi everyone. I've used proxmox 8.4 at least for a year, then the NVMe of my mini pc decided it was time to kill itself. I performed backups of all my LXCs and VMs every day so I was feeling confident. Since there was a new version of proxmox I decided to install the 9.1 version. Then I started the process to restore the backups of my LXCs, and here comes the troubles. Apparently they work, the console works, connection works and so on, but the docker installation in every LXC I have starts after even two minutes after the CT is on, while with the 8.4 version it started immediately. Also some CT, like Jellyfin, gives me trouble not being reachable from outside because the server crashes or the docker configuration gives problems. I don't understand if it's because 9.1 is still "young", there are incompatibility between 8.4 and 9.1 or something I?ve made wrong. My configuration is this

- Mini PC --> proxmox 9.1 --> main node with cloudflare tunnel installed --> SDN set --> every single LXC with debian-12-turnkey-core_18.1-1_amd64, with docker and dockge (for the GUI and management of its dedicated docker image installed)

Thank you for your support
 
I've reinstalled Proxmox 8.4 and restored the backups I had. Now everything works fine. I don't know if it because there's some kind of incompatibility between 8.4 and 9.1 backups or because 9.1 is still "young". I've resolved reinstalling the same version of Proxmox of when I created the backups. Thanks for your help
 
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