Comment (by Roland Haas):

As of git hash 58166448 "Carpet: do not use function name only to identify reads / writes" of carpet this no longer happens though the combination Cactus::psync_error=yes and Cactus::use_psync=no likely still has odd behaviour.

--
Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2377/cactus-psync_error-yes-without-cactus