Joshua D. Drake wrote:
> On Mon, 2009-03-23 at 16:21 -0400, Bruce Momjian wrote:
>> If a platform doesn't have posix_fadvise(), we don't allow
>> effective_io_concurrency to be set to anything but zero:
>>
>> test=> set effective_io_concurrency = 1;
>> ERROR: 1 is outside the valid range for parameter "effective_io_concurrency" (0 .. 0)
>> test=> set effective_io_concurrency = 0;
>> SET
>>
>> Do we want to give a more informative error message, like "not supported
>> on this platform?"
>
> I would say so.
The trick will be to fit this into the GUC framework.