Re: Urgent, Please respond - Re: max_scsi_luns and 2.4.19-pre10.

From: jw schultz (jw@pegasys.ws)
Date: Tue Jun 25 2002 - 21:48:06 EST

I'm no expert on this bit but look in
drivers/scsi/scsi_scan.c for CONFIG_SCSI_MULTI_LUN

#ifdef CONFIG_SCSI_MULTI_LUN
static int max_scsi_luns = 8;
#else
static int max_scsi_luns = 1;
#endif

This is the variable you seem to want.

Note to SCSI maintainers. a quick vi `grep -l CONFIG_SCSI_MULTI_LUN`
here reveals lots of hardcoded values of 8. It seems to me
that perhaps a CONFIG_SCSI_MAX_LUN to replace
CONFIG_SCSI_MULTI_LUN would be in order.

I know Alan and others are planning to do major cleanup of
the scsi subsystem (hopefully after IDE stablizes?)

On Tue, Jun 25, 2002 at 08:50:35PM -0500, Austin Gonyou wrote:
> I'm really really sorry for asking such a seemingly stupid question, but
> I'm having a very severe issue here and I can't seem to figure out the
> fix.
>
> If someone could exchange emails with me for a few mins I'd be very
> grateful. I see that I have max_scsi_luns in my System.map, but I cannot
> see luns > 8(0-7) with 2.4.19-pre10. The same driver set works with the
> default RH installed kernel(2.4.9). So it leads me to believe that
> putting max_scsi_luns=128 (or even 16) in grub.conf isn't being
> effective.
>
> Please help.
>
> On Tue, 2002-06-25 at 19:46, Austin Gonyou wrote:
> > This originally was asking for help regarding QLA2200's, but I've since
> > discovered it's a kernel param problem that I'm not sure how to solve.
> >
> > Using a default RH kernel (from SGI XFS installer) and passing
> > max_scsi_luns=128 in grub, and for scsi_mod, it seems to work.
> >
> > But when I compile my own kernels, none of that stuff is modular, it's
> > all built in. I though that passing max_scsi_luns at boot time would
> > make the scsi subsystem just work with > 8 luns, but so far that doesn't
> > appear to be the case.
> >
> >
> > Can someone please tell me where I've gone wrong? I'm so deep into this,
> > I can't tell which way is up.
> >
> > TIA
> > --
> > Austin Gonyou <austin@digitalroadkill.net>
> > -
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> --
> Austin Gonyou <austin@digitalroadkill.net>
> -
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-- 
________________________________________________________________
	J.W. Schultz            Pegasystems Technologies
	email address:		jw@pegasys.ws

		Remember Cernan and Schmitt
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