I found a reference to a zfs bug on google but github hasn't been fruitful for some reason. Everything else passed and splat returned 0. Should be concerned about this? Code: # splat -a ... taskq:front Fail Invalid or incomplete multibyte or wide character ... # locale LANG=en_US.UTF-8 LC_CTYPE="en_US.UTF-8" LC_NUMERIC="en_US.UTF-8" LC_TIME="en_US.UTF-8" LC_COLLATE=C LC_MONETARY="en_US.UTF-8" LC_MESSAGES="en_US.UTF-8" LC_PAPER="en_US.UTF-8" LC_NAME="en_US.UTF-8" LC_ADDRESS="en_US.UTF-8" LC_TELEPHONE="en_US.UTF-8" LC_MEASUREMENT="en_US.UTF-8" LC_IDENTIFICATION="en_US.UTF-8" LC_ALL=
User error... :-\ Don't run the test before everything prior to that (like installing zfs) has completed successfully.