By default, all Sysrepo logging is off. There are 3 kinds of output for the logging messages if enabled. They can be written to stderr, handled by syslog, or simply passed to a callback.

It is important to note that enabling Sysrepo logging also modifies libyang logging settings. Error messages are treated as standard Sysrepo errors and other messages of lower severity are completely hidden. To change this behaviour, simply adjust libyang logging settings after enabling Sysrepo logging.

Also, almost every Sysrepo API function returns an error code that can be transformed to a string, if needed.