Simon Riggs <simon.ri...@enterprisedb.com> writes: > On Thu, 7 Apr 2022 at 08:46, Thomas Munro <thomas.mu...@gmail.com> wrote: > >> With that... I've finally pushed the 0002 patch and will be watching >> the build farm. > > This is a nice feature if it is safe to turn off full_page_writes. > > When is it safe to do that? On which platform? > > I am not aware of any released software that allows full_page_writes > to be safely disabled. Perhaps something has been released recently > that allows this? I think we have substantial documentation about > safety of other settings, so we should carefully document things here > also.
Our WAL reliability docs claim that ZFS is safe against torn pages: https://www.postgresql.org/docs/current/wal-reliability.html: If you have file-system software that prevents partial page writes (e.g., ZFS), you can turn off this page imaging by turning off the full_page_writes parameter. - ilmari
