I uncommented the org.jboss.ha section in jboss-logging.xml and didn't get debug logging output in server.log. I also tried to hack the root-logger to debug.

My jboss-logging.xml is here http://pastebin.com/uDXNBBG3

server.log is here http://pastebin.com/GugZg79M

This is using the "all" profile.

I ran the AS in a debugger and could see that the logger returned in org.jboss.ha.framework.server.HAServiceImpl has log.logger.loggerNode.effectLevel == 800 (INFO).

It feels like this is a configuration issue of some sort as debug logging (via the root-logger change) is enabled for other some packages (like org.jboss.modcluster.ha).

Perhaps we just need more instructions in jboss-logging.xml explaining the additional configuration rules (if there are any) for enabling debug logging.