Perhaps you need a devuan file in the directory /usr/share/lxc/config/.
# ls /usr/share/lxc/config/
alpine.common.conf common.conf fedora.userns.conf opensuse.common.conf plamo.userns.conf sparclinux.common.conf ubuntu.lucid.conf
Actual container size 20 GB, but its backup 391 GB.
391 GB it is displayed in the web interface, but much less backup is used on the disk.
Partition size for backups (used 93 GB). There is not 1 backup, but more:
What is the risk of using the soft option? Risking one backup or all?
NFS storage will be connected automatically, or you will need to remount manually? (option soft)
What is your advice for a backup storage?