@dr4s1l-0 @Dr4s1l-0 you will not see the config drive mounted in your system, cloud-init only mounts it temporarily very early on in the boot process, copies the found config files off of it, and unmounts it. Mounting it manually will just cause more issues. You can probably see it being mounted early on in the logs in /var/log/cloud-init.log
Cloud-init has introduced a ton of bugs this year and has no documentation regarding them, it has been a nightmare to try and track down these issues - I have a support customer with the same issue on recent versions of ubuntu and I've gotten nowhere. At this point I think it's best to take it up with the upstream project, cloud-init - from the XOA/XCP perspective we're doing everything we can, resulting in presenting a properly configured config drive - any issue after that is the cloud-init package