Re: Anomalous supervise behavior

+---------- On Mar 13, Glenn Willen said:
| Strace showed that poll() claimed data was present on fd6, but read()
| on fd6 was reading 0 bytes each time.

I have seen this behavior when someone duplicated an existing service
directory incorrectly (using cp -r).  The copies of supervise/control and
supervise/ok were plain files instead of pipes.  That will cause
supervise to behave the way your trace shows.