[lxc-users] setgid: Operation not permitted

[Serge E. Hallyn]

On Tue, Apr 09, 2019 at 12:55:10PM +0300, Kaj Wiik wrote:
> I have an unprivileged container with Ubuntu 18.04 with autossh for remote
> port forwarding.
> 
> Everything worked fine until I tried to bind mount a NFS disk (mounted to
> host) to the container with uid=33 gid=33. What is curious, everything
> worked for a while but then a user reported that he cannot access to that
> disk. And indeed, it was mounted now in the container as nobody uid/gid.
> 
> In the process of debugging, I removed the bind mount and rebooted the
> container. After reboot su does not work:
> # su autossh
> setgid: Operation not permitted
> 
> I have rebooted the container and done lxd init --auto but nothing works. I
> have several identical containers where su definitely works.
> 
> As this is a production container I am in a state of panic. Please help!

Can you show the container configuration?  As well as the uid and default
gid of 'autossh' in the container.