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Date:      Thu, 19 Apr 2001 09:07:35 -0700 (PDT)
From:      Tom <tom@uniserve.com>
To:        Domas Mituzas <midom@delfi.lt>
Cc:        freebsd-stable@freebsd.org, msmith@freebsd.org, freebsd-scsi@freebsd.org
Subject:   Re: mly driver does not work with SCA in up-to-date 4.3
Message-ID:  <Pine.BSF.4.10.10104190903360.37148-100000@athena.uniserve.ca>
In-Reply-To: <20010419102313.P66974-100000@axis.tdd.lt>

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On Thu, 19 Apr 2001, Domas Mituzas wrote:

> We've got Intel ISP2150 chasis with two quantum atlass 36g drives,
> connected via SCA to mylex acceleraid 170 (firmware 6.x).
> 
> Mylex logical volume was inicialized using automatic setup, cause it fully
> satisfied our needs (fault-tolerant mirror).
> 
> It always (during successful starts and not successful ones) showed us
> 
> (probe15:mly0:1:0:0): MODE SENSE(06). CDB: 1a 0 a 0 14 0
> (probe15:mly0:1:0:0): ILLEGAL REQUEST asc:21,0
> (probe15:mly0:1:0:0): Logical block address out of range
> 
> Unsuccessful starts included:
> 
> (probe6:mly0:0:6:0): INQUIRY. CDB 12 1 80 0 ff 0
> (probe6:mly0:0:6:0): ILLEGAL REQUEST asc:24,0
> (probe6:mly0:0:6:0): Invalid field in CDB
> 
> As far as I understand, 0:6:0 is SCA processor, identified by mylex bios
> as:
> 
> 0:06 Processor ESG-SHV SCA HBPM10 0.04

  Good to know the ISP2150 has an intelligent SCSI backplane.  Not every
SCA system does.

> So it seams, that mylex doesn't know how to work with it.

  Well, I've used FreeBSD with Mylex AccelRAID 352s on a number of IBM
x340s with intelligent SCSI backplanes.  It reports the physical device
gone message:

> mly0 physical device 0:6 gone
> that is repeated several times.

  But it does not panic.

Tom


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