[4523] in linux-scsi channel archive
Re: Astor chassis
daemon@ATHENA.MIT.EDU (Leonard N. Zubkoff)
Mon Aug 10 17:19:30 1998
Date: Mon, 10 Aug 1998 10:00:30 -0700
From: "Leonard N. Zubkoff" <lnz@dandelion.com>
To: richip@mozcom.com
CC: linux-scsi@vger.rutgers.edu
In-reply-to: <Pine.GSO.3.96.980808105939.19698B-100000@dns-backup.mozcom.com>
(richip@mozcom.com)
Date: Sat, 8 Aug 1998 11:04:15 +0800 (HKT)
From: "Richard Neal G. Plana" <richip@mozcom.com>
We recently bought an Astor chassis (computer case) which we use with an
Intel R440LX motherboard (built-in AIC7880UW SCSI interface).
Unfortunately, the Hot-Swappable Backplane which comes with it is detected
by the generic SCSI driver as ID5 and tries to initialize it. At a guess,
I think the SCSI driver tries to initialize the HSBP and fails which is
why Linux bootup hangs (Initializing ... trying harder).
Is there a workaround for this or has it been included in later versions
of the SCSI driver? (It's probably not SCSI controller type dependent)
ANY solution to the problem would be greatly appreciated.
I've seen this problem on the Astor, as well as on the hot swap backplane in
the Aspen/Drake quad Xeon server. I plan to investigate and fix it if possible
this week. With a BT-958, the driver recovers after resetting the device. I
suspect we may need to blacklist these backplanes, but I won't know the precise
details without further testing.
For the meanwhile, it appears that the Astor SAF-TE backplane can be disabled
by moving the "Force Update" jumper (J1A1 at the bottom) from "Normal" (pins
1-2) to "Force Update" (pins 2-3).
Leonard
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