I installed app-emulation/lxd with version 2.21. The default /etc/conf.d/lxd file about verbose flag settings is wrong. Here is the default: # Enables verbose mode #LXD_OPTIONS+=" -v" The -v switch is wrong. It should be --verbose, like this: # Enables verbose mode #LXD_OPTIONS+=" --verbose"
Per 'lxd --help', both short and long versions are supported. I tested both to confirm.