How can I fix a new ActiveMQ Artemis install blocking issue?

I found this on further research in the user manual:

max-disk-usage The max percentage of data we should use from disks. The System will block while the disk is full. Default=100

and in the log after service startup with no messages published yet:

WARN [org.apache.activemq.artemis.core.server] AMQ222210: Storage usage is beyond max-disk-usage. System will start blocking producers.

so I think no matter my address settings, it would start to block. Looking at the max-disk-usage setting in broker.xml, it was set to 90. Documentation default says 100, I set to that, no startup log warnings, and my test pub/sub code now works.