On Wed, Sep 24, 2003 at 10:39:09AM +0100, Patrick Welche wrote:
> On Tue, Sep 23, 2003 at 10:12:49PM +0200, Manuel Bouyer wrote:
> > On Tue, Sep 23, 2003 at 09:11:28AM +0100, Patrick Welche wrote:
> > > Can anyone think of a reason for exactly 0x400 contiguous bytes (0x1000-0x13ff)
> > > of a 1Gb file (1024^3 bytes) (postgresql database) to be replaced by a bit
> > > of my /var/mail/prlw1 (often mmapped by mutt)?
> ...
> > So I suspect there's a problem where file data can get mixed between 2
> > files, one being read and the second written.
> 
> So, in your case, mrtg wrote to one disk, and the data ended up in a file
> on an nfs served disk being read.
> In my case sd0 data ended up in wd0, but I don't know who was reading and
> writing other than both mutt and postgresql were doing it.
> 
> Can you remember when it started? Before that 17th September kernel, I was
> running 1.6X, probably 28th August and hadn't noticed anything, that isn't
> to say it hasn't happened!

It's much older, my servers are all running 1.6.x. I had it only 2 times,
one time last winter and one this summer.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
     NetBSD: 24 ans d'experience feront toujours la difference
--