In order for the LXC container to have full access the proxmox host directory, a subgid is set as owner of a host directory, and an ACL is used to ensure permissions.
Add the following line to /etc/pve/lxc/<CT_ID>.conf
mp0:/mount/point/on/host,mp=/mount/point/on/lxc
In the default Proxmox configuration, unpriviliged container subgids will have the prefix "10" followed by the expected 4-digit gid.
Install normally using the installer, after the setup reboot into recovery mode (from the USB stick). Make sure to install in UEFI mode (you need systemd-boot).
If the USB stick is not working for you, because of the old Kernel version (2.6.x), you can also use an Ubuntu 19.10 / 20.04 boot stick. ZFS suport is enabled there out of the box.
Steps:
| /** | |
| * USB HID Keyboard scan codes as per USB spec 1.11 | |
| * plus some additional codes | |
| * | |
| * Created by MightyPork, 2016 | |
| * Public domain | |
| * | |
| * Adapted from: | |
| * https://source.android.com/devices/input/keyboard-devices.html | |
| */ |