Transmission settings.json Reverting to Defaults
The transmission-daemon package from EPEL makes it easy to setup a command line bittorrent client on RHEL or CentOS . However, I have encountered situations where modified settings in/var/lib/transmission/.config/transmission/settings.json revert back to their defaults upon starting the transmission-daemon service.
In particular, the rpc-authentication-required parameter will always revert back to false if set to true when using a default transmission-daemon install. This occurs because of certain switches being passed by the transmission-daemon init script found at /etc/init.d/transmission-daemon.
The particular line in /etc/init.d/transmission-daemon that is overriding certain parameters in /var/lib/transmission/.config/transmission/settings.json is the following:
DAEMON_ARGS="-T --blocklist -g $TRANSMISSION_HOME/.config/transmission"
The -T switch causes transmission-daemon to never require authentication, and the –blocklist switch enables peer blocklists. If you would rather your settings only be defined in /var/lib/transmission/.config/transmission/settings.json, remove those switches. I would suggest copying this line, commenting it out, pasting a new line, and removing the switches from the new line in case you ever want to revert to the default settings. The new DAEMON_ARGS line would then look like the following:
DAEMON_ARGS="-g $TRANSMISSION_HOME/.config/transmission"
Now, all settings will only be defined in /var/lib/transmission/.config/transmission/settings.json.
Take note, in order to change any settings in /var/lib/transmission/.config/transmission/settings.json, the transmission-daemon service must be stopped. Changes made while the service is running will be ignored and set back to their previous settings upon restart.
Virtual Private Servers
When enabled, Transmission will hint to the OS which piece data it’s about to read from disk in order to satisfy requests from peers.