Running LXC from Proxmox on SMB

Hi,

I have a Proxmox Server ("A") and another server (let's call it "B") running SMB as a Server on SSDs. Both servers have 10G NICs.

I want to install a LXC on A which uses the SMB-share of B as install device.

I face several problems:

Adding SMB via GUI does not work (error 500).

Adding via "pvesm add cifs" did work.

I can install the LXC on the smb share, but I cannot start it "

runbuffer: 322 Script exited with status 5
lxcinit: 844 Failed to run lxc.hook.pre-start for container "407"
lxcstart: 2027 Failed to initialize container "407"
TASK ERROR: startup for container '407' failed"

​

Any ideas how to get it running?