Zeugswetter Andreas SB <ZeugswetterA(at)wien(dot)spardat(dot)at> writes:
>> BTW, it also seems like a good idea to reorder the postmaster's
>> startup operations so that the data-directory lockfile is checked
>> before trying to acquire the port lockfile, instead of after. That
>> way, in the common scenario where you're trying to start a second
>> postmaster in the same directory + same port, it'd fail cleanly
>> even if /tmp/.s.PGSQL.5432.lock had disappeared.
> Fine, sounds like reordering would eliminate the need for the socket lock
> anyway, no ?
Not at all. If you start two postmasters in different data directories
but with the same port number, you still have a socket-file conflict
that needs to be detected.
regards, tom lane
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