Michael Guerin <guerin(at)rentec(dot)com> writes:
> "Dumping and reloading the table that owns this toast table would be a safer route; it would at
> least make it real clear what damage you'd suffered."
> Is this b/c the damaged pages would be zero'd out?
Right, which would make vacuum happy, but you'd be missing some data.
(Unless you're fortunate enough that there are no currently-live rows
on the damaged page.)
regards, tom lane