On Thu, Dec 9, 2021 at 7:42 AM Bharath Rupireddy <bharath.rupireddyforpostg...@gmail.com> wrote: > How about ALTER SYSTEM SET shared_preload_libraries command itself > checking for availability of the specified libraries (after fetching > library names from the parsed string value) with stat() and then > report an error if any of the libraries doesn't exist? Currently, it > just accepts if the specified value passes the parsing.
That certainly would have helped me. I guess it technically breaks the theoretical use case of "first change the shared_preload_libraries setting, then install those libraries, then restart Postgres," but I don't see why anyone would do that in practice. For what it's worth, I don't even feel strongly that this needs to be an error—just that the current flow around this is error-prone due to several sharp edges and could be improved. I would be happy with an error, but a warning or other mechanism could work, too. I do think better documentation is not enough: the differences between a working setting value and a broken one are pretty subtle. Thanks, Maciek
