[1965] in linux-scsi channel archive
Solved: Reboot hang with AHA 2940 Ultra
daemon@ATHENA.MIT.EDU (Mike Leddy)
Sun Jun 8 23:12:57 1997
Date: Sun, 08 Jun 1997 21:56:10 +0300
From: Mike Leddy <mike@ultranet.com.br>
To: linux-scsi <linux-scsi@vger.rutgers.edu>
CC: Alexandre Holanda <alex@ultranet.com.br>
Danny Sinang wrote:
>
> Turn on SCAM support in the SCSI utilities.
>
> - Danny Sinang
Thanks for tip, now everything works great :-)) ... even at Ultra
speeds ie. 20MByte/s with aic7xxx=ultra
I'm not sure why it makes a difference (for some reason the SCAM
protocol wakes up the drive, or perhaps the adaptech does a different
type of bus initialization ?)
In response to Larry, I haven't had any problems whatsoever with
Quantum SCSI, my old VP32210 has been working happily under a
heavy load for the past year and a half. Hope the Fireball will
be just as reliable......
Thanks for the responses
> ----------
> > From: Mike Leddy <mike@ultranet.com.br>
> > To: linux-scsi@vger.rutgers.edu; alex@ultranet.com.br
> > Subject: Reboot hang with AHA 2940 Ultra
> > Date: Sunday, June 08, 1997 5:45 AM
> >
> > [configuration details at end of e-mail]
> >
> > I have a fairly strange problem with my Adaptec AHA-2940 Ultra Wide,
> > Linux
> > version 2.0.28, and a Quantum Fireball.
> >
> > The fireball is the only SCSI device /dev/sda and Linux is configured to
> > boot from it.
> >
> > Symptoms:
> >
> > a) When I repeatedly power on the machine everything works fine.
> >
> > b) When I soft reboot or hit the reset button (after linux boots) the
> > quantum drive isn't found and the system hangs.
> >
> > c) If I repeatedly power-on the system and soft reboot during kernel
> > loading
> > (ie. before the SCSI driver initilizes) the drive the drive is
> > encountered
> > every time.
> >
> > It seems that (c) suggests that the Linux driver modifies the state of
> > the
> > SCSI interface in such a way that afterwards a soft reboot is no longer
> > sufficient to reset the card/bus.
> >
> > As this machine will be used as a mission critical server and needs to
> > reset using a watchdog this will cause serious problems for me.
> >
> > Can anyone suggest what might be going wrong, or give me some hints as
> > to
> > what might have an influence on this in the driver code. Any help
> > whatsoever
> > will be greatly appreciated.
> >
> > Machine:
> >
> > Pentium 200Mhz 96Mb Ram, Intel chipset, Quantam Fireball TM3200S,
> > Trident video, Realtek NE2000.
> >
