Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Sat, Jan 22, 2011 at 2:46 AM, Vladimir Kokovic
> <vladimir(dot)kokovic(at)gmail(dot)com> wrote:
>> Something is wrong with contrib/pg_test_fsync on Ubuntu 10.10 maverick.
> What, specifically, is wrong?
He's complaining that it dies with EINVAL.
I notice that (1) it's using O_DIRECT even though the printout claims
otherwise, and (2) it's writing from a buffer that has no better than
char alignment, which is certainly not OK for O_DIRECT. Either one
of those could plausibly result in EINVAL ...
regards, tom lane