Markus Schaber <schabi(at)logix-tt(dot)com> writes:
> As I said the leftovers are likely to be caused by hard kills and
> backend crashes, so I would not go into deeper analysis, but maybe the
> finding and possibly removing of such leftovers should be half-automated
> to assist server admins.
It's been discussed. Personally I'm afraid of the idea of automatically
deleting files that seem unreferenced, but having a tool to find them
for manual deletion isn't a bad idea. I think Bruce had a prototype
patch at one point --- not sure what the status is.
regards, tom lane