Re: kern/39052: assertion "!ISSET(bp->b_cflags, BC_BUSY)" failed

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Fri, Jun 27, 2008 at 03:59:32PM +0000, Andrew Doran wrote:
> On Fri, Jun 27, 2008 at 05:14:27PM +0200, Manuel Bouyer wrote:
> 
> > It's not amr(4) or ld(4) either. I've now been able to reproduce it on
> > a dom0 with a single wd(4) drive on ahcisata(4), and also with a
> > GENERIC+DEBUG+DIAGNOSTIC+REALEXTMEM="130048" amd64 kernel. The key point 
> > seems
> > to have the RAM set to 128MB. With bigger values, this problem doens't seem 
> > to
> > happen. So it would be something that occurs when the buffer cache is under
> > pressure, and is not related to any device or pseudo-device, or Xen.
> 
> Is it swapping to a file or to a partition?

to a partition. Both systems on which I reproduced this have a single disk,
from the OS POW.

-- 
Manuel Bouyer, LIP6, Universite Paris VI.           
Manuel.Bouyer%lip6.fr@localhost
     NetBSD: 26 ans d'experience feront toujours la difference
--