Re: Enabling failover (multipath) support in qla2300 driver

[Dag Wieers <dag wieers com>]

On Tue, 8 Mar 2005, Mindaugas Riauba wrote:

> > > How do I enable failover (multipath) support for the qla2300 driver in
> > > RedHat Enterprise 4.0?
> > >
> > > In RedHat 3.0 I added "ql2xfailover=1" to /etc/modprobe.conf, but that
> > > doesn't seem to work in 4.0.
> >
> > I'm sure the disk mapper option will eventually be the absolute best
> > way, but I'd agree with others assessments that this may still be
> > several updates away from being ready for prime time.  If others have
> > discovered other options I'd sure love to hear about them.
> 
>   I do not need to boot from SAN but I need failover, not multipath (load
> balancing) support. That's because HP MSA1500 does not support multipath.
> And mdadm does not support such functionality yet.
> 
>   So I filled support case in Red Hat website and downloaded beta 8.0 driver
> from Qlogic site. :)
> 
>   And we'll see how Red Hat will respond to support case.

If you're ok with using the Qlogic failover capabilities, look at:

	http://dag.wieers.com/home-made/qla-autoconf/

Currently it requires some knowledge about the Qlogic configuration (which 
is explained with the documentation that comes with the driver) which is 
not that easy.

I can assist you if necessary, in most cases I only need the Qlogic /proc 
output and a little information about the backend topology and what you 
require. qla-autoconf has a few examples

--   dag wieers,  dag wieers com,  http://dag.wieers.com/   --
[all I want is a warm bed and a kind word and unlimited power]