On Mon, Jun 6, 2016 at 8:43 PM, Alex Ignatov <a.igna...@postgrespro.ru>
> Why we don't have checksums on clog files.
> We have checksum on pg_control, optional checksumming on data files, some
> form of checksumming on wal's. But why we don't have any checksumming on
> clogs. Corruptions on clogs lead to transaction visisbility problems and
> database consistency violation.
> Can anybody explain this situation with clogs?
I think it will be better if users can have an option to checksum clog
pages. However, I think that will need a change in page (CLOG-page) format
which might not be a trivial work to accomplish.