Nothing worse than a vague question with little context, eh? Well... Does anyone know why GPFS might return ENOTTY to an fcntl(fd, F_SETLKW, &lock) where lock.l_type is set to F_RDLCK?
The error prompting this question looks almost identical to the one in this (unfortunately unanswered) thread: http://www.spectrumscale.org/pipermail/gpfsug-discuss/2014-June/000412.html -Aaron
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