Re: HP DAT drive on PI has trouble with large block sizes

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From: David (Duis) Story
Date: Tue, 22 Dec 1992 02:40

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In article <BzMDuq.E7t@well.sf.ca.us> gaarder@well.sf.ca.us (Steve Gaarder) writes:
>
>We have an HP DAT drive connected to a Personal Iris 4D/20 running Irix
>4.0.5.  I modified /usr/sysgen/master.d/tpsc to allow the machine to
>identify the unit as a DAT, and that seems to have worked.  However,
>when I try to use a tar blocking factor greater than 64 (= a block size
>greater than 32768), I get the following error:
>
>sc0,7,0: cmd=0x8 disconnected on non-word boundary (addr=C05CB402, 0x0 left).
>  Resetting SCSI bus
>
>I have the same problem when I put the drive on a 4D/35.  Any ideas
>what's going on here?

This message indicates that the device did not disconnect on a 32-bit
word boundary.  The device itself may allow this to be configured; I
believe our SCSI drivers require this.

Cheers,

David Story                        	        Silicon Graphics, Inc.
story@bent.wpd.sgi.com				Mountain View, California

I've changed my name, so duis@sgi.com may bounce, please use story@sgi.com.

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From: story@sgi.com (David (Duis) Story)
Subject: Re: HP DAT drive on PI has trouble with large block sizes
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Date: Tue, 22 Dec 92 02:40:53 GMT
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