Bruce Momjian wrote:
> On Tue, Feb 11, 2014 at 01:28:01AM +0200, Marti Raudsepp wrote:
> > On Tue, Feb 11, 2014 at 12:20 AM, Marti Raudsepp <marti@juffo.org> wrote:
> > > This is on Ubuntu 13.10 (kernel 3.11) with XFS (mount ed with noatime,
> > > no other customizations).
> >
> > I managed to track this down; XFS doesn't allow using O_DIRECT for
> > writes smaller than the filesystem's sector size (probably same on
> > other FSes). The XFS filesystem created by the Ubuntu installer uses
> > 4kB sectors, for some weird reason:
>
> I have added the attached, applied C comment about Direct I/O write
> failures and mismatched block sizes.
Would it be more useful to report the test as failed and continue with
other tests?
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
