Hi,
On 2019-03-29 11:38:02 -0400, Stephen Frost wrote:
> The server-side function would essentially lock the page against i/o,
> re-read it off disk into an independent location, unlock the page, then
> calculate the checksum and report back?
Right. I think there's a few minor variations of how this could be done,
but that'd be the basic approach.
> That seems like it would be reasonable to me. Wouldn't it make sense to
> then have pg_basebackup use that same function..?
Yea, probably. Or at least reuse the majority of it, I can imagine the
error reporting would be a bit different (sqlstates et al are needed for
the basebackup.c case, but not the pg_checksum case).
Greetings,
Andres Freund