Re: BUG #11882: make HAVE_WORKING_LINK an option

David Gauchard <gauchard(at)laas(dot)fr> writes:
> On mer., nov. 05, 2014 at 05:35:14 +0100, Andres Freund wrote:
>> On 2014-11-05 14:44:48 +0000, gauchard(at)laas(dot)fr wrote:
>>> This define "HAVE_WORKING_LINK" should not be always enabled. On systems
>>> that support (and surely use) hard links FS, postgresql might be used on a
>>> subFS not supporting it.

>> Those FS's really shouldn't be used for a database though. Are you
>> thinking of something concrete?

> I was working on a fuse filesystem which I test using the
> phoronix test suite, which uses postgresql for benchmarking, when
> I ran into this bug (hard link is not always implementable).

Meh. There's a reason HAVE_WORKING_LINK is defined in pg_config_manual.h:
if you want to adjust it, you're supposed to do so manually.

I don't really want to carry a configure option to support
non-production-quality filesystems. Even just documenting it
would be painful (are we really going to have an option that
we'd tell people not to use?)

regards, tom lane