kernel modules between PVE and LXC (WebDAV)

[MG-X]

Good evening,
I don't quite understand how the kernel sharing between the PVE host and an LXC works. I want to use a WebDAV mount (davfs2) on an LXC. When I try to do that it tells me modprobe: FATAL: Module fuse not found in directory /lib/modules/5.15.35-1-pve. I found out the the problem is the missing fuse module in the kernel. So when I do lsmod on the PVE there is indeed no fuse listed (lsmod | grep fuse returns nothing). But on the PVE host I can mount WebDAV shares

Why is this possible when the module is missing and how do I now get it to work on my LXC as well?

PVE V.7.2-3, Kernel 5.15.35-1-pve
LXC is an up-to-date Debian 11

 

[shrdlicka]

Hi,
According to the documentation the best solution would be to mount the WebDAV on the host and then do a bind mount in the container:

https://pve.proxmox.com/wiki/Unprivileged_LXC_containers#Using_local_directory_bind_mount_points

 

[MG-X]

Thank you for the help, this works!
But what is going on with the kernel module between the the host and the LXC?

 

[shrdlicka]

"lsmod" shows you loaded modules. fuse is one of the modules built into the kernel so it is not shown. You can check this via "modinfo fuse" and compare it with some module shown via lsmod. I hope this answers your question .

Also I also just saw it that you can enable the fuse mount in the container. The documentation just doesn't recommend it:

 

[MG-X]

Thank you so much for your answer! Of course it had to be a simple checkbox