Adam Witney <awitney(at)sgul(dot)ac(dot)uk> writes:
> Whats the best way to zero the bad block?
Probably dd from /dev/zero, along the lines of
dd bs=8k seek=597621 count=1 conv=notrunc if=/dev/zero of=relation
(check this before you apply it ;-)). You probably should stop the
postmaster while doing this, in case it has a cached copy of the page.
regards, tom lane