Re: pgsql/doc/TODO.detail (alpha default distinct flock fsync function limit null pg_shadow primary)

> eisentrp@csis.gvsu.edu writes:
> > On Tue, 4 Jul 2000, Bruce Momjian - CVS wrote:
> >> Removed Files:
> >> alpha default distinct flock fsync function limit null
> >> pg_shadow primary
>
> > What are we going to do with the flock? Remove it? I asked about this
> > yesterday, I guess it's not useful anymore.
>
> It still is, because the $PGDATA pid file only guards against starting
> two postmasters in the same data directory.  You still need some lock
> against starting two postmasters on the same port number.  The TCP
> socket address can take care of itself, but if one or both postmasters
> is started without -i then there's got to be some interlock on the Unix
> socket file.
>
> I don't much like depending on flock for that, since it isn't available
> everywhere.  The only portable answer is to build a pid-containing
> interlock file for each socket file, as discussed in the TODO item.
>
> It was premature of Bruce to delete the flock TODO file, since there is
> still a lot of undone stuff in there concerning both this issue and
> moving the Unix-socket file to a safer place than /tmp.

OK, I have re-added TODO.detail, and re-added the TODO item.

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