[ENBD] raid0 over ENBD: SMP problem?

[Arne Wiebalck]

hi pierre,

I am using 2.4.28 and it works fine (at least for me) under SMP. Yes, it
has this patch included.
I am not aware of anything introduced in 2.4.28 that causes problems.

best regards,
 arne



On Tue, 28 May 2002, Pierre Berthier wrote:

> Dear Arne,
>
> many thanks, it works. Actually I had not noticed 2.4.28 is now the
> stable version. Should I use it? It seems to me that this patch is
> included, but I'm not an expert :-) Is there any known problem
> introduced with 2.4.28 compared to 2.4.27?
>
> Thanks
> Pierre
>
> --- Arne Wiebalck <wiebalck@kip.uni-heidelberg.de> wrote:
> > hi,
> >
> > some time ago I also experienced some stability problems which we
> > (peter
> > and I) think were due to smp. I had these problems even in a point
> > to point setup.
> > peter helped me out with this little patch, which I applied to
> > 2.4.27, the
> > version you are currently using:
> >
> > --- nbd-2.4.28/linux/include/linux/nbd.hMon Mar 25 00:27:03 2002
> > +++ nbd-2.4.29/linux/include/linux/nbd.hFri Mar 29 21:41:39 2002
> > @@ -425,8 +425,8 @@
> >             if (!end_that_request_first (req, uptodate,
> > DEVICE_NAME))
> >                 break;
> >         }
> > -       NBD_spin_unlock_irqrestore(&io_request_lock, flags);
> >         end_that_request_last( req );
> > +       NBD_spin_unlock_irqrestore(&io_request_lock, flags);      }
> >     /*
> >
> > since that time my setup, also using the software RAID as you do,
> > works
> > _very_ stable and survived all torture tests I did ...
> >
> > so, you may try that patch.
> >
> > best regards,
> >  arne
> >
>
>
> =3D=3D=3D=3D=3D
> Pierre Berthier
> Computational and Molecular Population Genetics
> Zoologisches Institut, Universit=E4t Bern, Baltzerstrasse 6, 3012 Bern
> Switzerland
> Tel: +41 31 631 30 28  Fax: +41 31 631 31 88
>
> http://cmpg.unibe.ch/people/berthier.htm
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! - Official partner of 2002 FIFA World Cup
> http://fifaworldcup.yahoo.com
> _______________________________________________
> ENBD mailing list
> ENBD@lists.community.tummy.com
> http://lists.community.tummy.com/mailman/listinfo/enbd
>

**********************************************************************
 Arne Wiebalck                        Kirchhoff Institute for Physics
                                           Technical Computer Science
                                                     Schroederstr. 90
                                                   D-69120 Heidelberg

 e-mail: wiebalck@kip.uni-heidelberg.de      Tel.: (+49) 6221/54-4362
 web   : http://www.kip.uni-heidelberg.de    Fax.: (+49) 6221/54-4345
**********************************************************************