[ILUG] SCSI woes

[Vincent Cunniffe]

ilug-admin at linux.ie wrote:
> 
> I was hoping to do a bit more experimenting before posting
> here, but it's getting late, all this plugging/unplugging,
> powering up/powering down and dismantling of boxes is
> keeping people awake...

<snip>

> If I power up the disk, the driver stalls completely
> on boot.  No messages at all.
> 
> The host adapter is an Adaptec ADP1505, the driver is
> the aha152x.  I see that the driver hasn't been updated
> since 1996.  The disks are RZ55s.
> 
> Any words of wisdom from the SCSI veterans out there?
> Is this more or less likely to be a driver problem,
> a disk problem, or some wierd cabling problem?

Well, I have the exact same adapter using the aha152x driver, 
running under 2.2.12-20 (stock RH6.1 install). It's connected
to 5 SCSI CD drives in an external box, on a 7-plug 3-foot
50-pin SCSI cable with a Centronics adapter on the outside of
the SCSI enclosure. There's a 25-ping -> centronics cable
from the Adaptec to the SCSI box.

The only problem I've ever had with the setup was getting the
right values to pass to the module : once I had that working 
the system worked perfectly.

The CD's don't seem to be recognised at boot either, and I
usually have to give them a quick nudge with 'mount /juke/cd0'
and so forth (they're in fstab), but apart from that, perfect.

So, I'd look to the disks themselves as the source of the 
problem, or at any rate suspect them of uncovering a bug in 
the aha152x code with some pretty unusual behaviour.

If you'd like me to run one of the disks on my system and
see how it behaves, I'll give it a shot.

Vin