This message is not ours...
I can find tons of stuff on google about it.
Does this error message suggest an issue with libaio usage in hornetq? I've found a lot of noise on google but no real answers on how much of an impact this causes on filesystem performance.
AIO will use hardware access and kernel directly. Since you are going through a layer on a hipper visor maybe the system is not aligned with the actual hardware hence you are getting that message.
You should look at how that is accomplished on amazon and maybe you should consider journal NiIO on that case which also is fast and asynchronous.