In 5.3, Wafl will no longer hang if a directory conversion takes more than 10 minutes and directory conversion is faster. And there is a option, wafl.create_ucode, that when set creates all new directories in unicode format, even when created from NFS.
the toasters CPU will still be maxed out, and mostly unresponsive. i'll have to play with the wafl.create_ucode option.
thanks,
-s