Vincent de Phily <vincent(dot)dephily(at)mobile-devices(dot)fr> writes:
> I have droped a database a few hours ago to reclaim some badly-needed space,
> but that disk space has not been freed yet. Investigating further, there are
> lots of deleted but open files that seem to correspond to the droped db, all
> open by some postgres process.
I believe this is taken care of in recent PG releases. 9.1.2 is, um,
not recent.
regards, tom lane