How to mount an nfs share inside an lxc container

[Mattias Hedman]

I have googeled and tried more than one solution but none seems to work.
I have edited apparmour, added mp0 to the lxc config, fiddling with other things inside lxc 100.cfg.
None seems to do what I want. Can it be that hard to mount an nfs inside an lxc container?

Got a container running Centos7.

 

[oguz]

hi,

you can try mounting the share on your host and then bind mount[0] that directory in your container.

[0]: https://pve.proxmox.com/wiki/Linux_Container#_bind_mount_points

 

[geoff_the_chef]

I have googeled and tried more than one solution but none seems to work.
I have edited apparmour, added mp0 to the lxc config, fiddling with other things inside lxc 100.cfg.
None seems to do what I want. Can it be that hard to mount an nfs inside an lxc container?

Got a container running Centos7.

Came across your question. I have Jellyfin in a lxc container on Ubuntu, so not strictly Proxmox, but I don't see why it wouldn't work. My Video files are on a separate drive and I just need Jellyfin to read and play them. The following command line on the host Ubuntu 20.04 allows that:

lxc config device add MrJelly shared_dir disk path=/home/ubuntu/Videos source="/media/gort/black_drive_2/Videos/DVDs"

MrJelly: Is the name of the container for jellyfin

shared_dir: Any made up device name to implement the share

path=/home/ubuntu/Videos: Is a the reference directory for Jellyfin to find videos within the container (default user name being "ubuntu")

source="/media/gort/black_drive_2/Videos/DVDs": The location of the host video files

Works something like a symlink. Not sure if you can change the permissions on the host directory it would allow write access, as I haven't tried it, but it works fine readonly. You can create more than one link. Just change the shared_dir device name parameter and the path=/home/ubuntu/Videos to something different.

Good luck with your project, hope the above helps you out.

 

[Dunuin]

Using privileges LXCs using SMB/NFS shares is easy. You just need to enable the "allow CIFS/NFS" feature using the GUI for the LXC.
The problem are unprivileged LXCs where this feature is forbidden. But the bind-mount workaround oguz mentioned is still working.

 

[dsimoes]

Hi Everyone.

I'm trying to also give access to an NFS share inside the LXC.
I followed oguz recommendation and created the NFS mount on host then use the following command to add it to the LXC:

pct set 205 -mp0 /mnt/bindmounts/shared,mp=/shared

But this caused Snapshot feature to be disabled "The current guest configuration does not support taking new snapshots".

I tried adding It with the backup=0 flag:

pct set 205 -mp0 /mnt/bindmounts/shared,mp=/shared,backup=0

But still no luck. I really wanted to use the Snapshot in this LXC. Any workaround for this?

Thanks.

Proxmox: 7.1-7

 

[Mattias Hedman]

I cab recommend this post, https://theorangeone.net/posts/mount-nfs-inside-lxc/

 

[dsimoes]

Thank you for your suggestion.

If I use the LXC NFS direct mount method, Snapshots will work as intended?

 

[Chacsam]

hi,

you can try mounting the share on your host and then bind mount[0] that directory in your container.

[0]: https://pve.proxmox.com/wiki/Linux_Container#_bind_mount_points

Is there a way to do that while keeping the original ownership of the directories (root root), it's moved to nobody:nogroup which the docker app I want to use (Librephotos) doesn't seem able to read

 

[qingzhuoranguo]

I cab recommend this post, https://theorangeone.net/posts/mount-nfs-inside-lxc/

Thx for the site, rly helped

 

[dlasher]

I cab recommend this post, https://theorangeone.net/posts/mount-nfs-inside-lxc/

Absolutely agree. Resharing in case the original goes away.

#TL;DR​

How do you mount NFS shares inside an LXC container?

1. Create a privileged LXC container, using any guest distribution of your choosing
2. Once created, modify the config file (/etc/pve/lxc/<id>.conf on Proxmox) and add features: mount=nfs
3. Restart the container
4. Mount your data (e.g. mount -t nfs 192.168.1.1:/data /mnt/data)