From owner-freebsd-scsi  Thu Nov 16 05:29:12 1995
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From: Peter Dufault <dufault@hda.com>
Message-Id: <199511161329.IAA09620@hda.com>
Subject: Re: Help! My SCSI-2 CD rom is timing out
To: jaykuri@interaccess.com (Jay Kuri)
Date: Thu, 16 Nov 1995 08:29:56 -0500 (EST)
Cc: julian@ref.tfs.com, freebsd-scsi@FreeBSD.org
In-Reply-To: <Pine.BSI.3.91.951115203955.2209B-100000@flowbee.interaccess.com> from "Jay Kuri" at Nov 15, 95 09:39:32 pm
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(...)
> cd0(aic0:1:0): command: 1b,0,0,0,1,0-[0 bytes]

START_STOP with start bit of one (make unit ready for use);

(...)

> cd0(aic0:1:0): HARDWARE FAILURE asc:9,0 Track following error
> cd0(aic0:1:0): scsi_interpret_sense (no bp) returned 5

I assume you've tried this with other disks?
We ignore this error in cd_open..

> xs(0xf052bb00): 
> flg(0x60)sc_link(0xf052bb80)retr(0x2)timo(0x1388)cmd(0xf052bb58)len(0x6)data(0x0)len(0x0)res(0x0)err(0x0)bp(0x0)cd0(aic0:1:0): command: 1e,0,0,0,1,0-[0 bytes]
> cd0(aic0:1:0): aic_scsi_cmd
> cd0(aic0:1:0): scsi_done
> cd0(aic0:1:0): command: 1e,0,0,0,1,0-[0 bytes]

Prevent removal...

> cd0(aic0:1:0): back in cmd()
> cd0(aic0:1:0): sc_err1,err = 0x1 
> code70 valid0 seg0 key5 ili0 eom0 fmark0
> info: 0 0 0 0 followed by 10 extra bytes
> extra: 0 0 0 0 20 0 0 0 0 0 

20,0=Invalid Command Operation Code (I don't know why it wasn't printed).
Maybe because it didn't spin up?

(A read at block 64...)
> cd0(aic0:1:0): ILLEGAL REQUEST asc:21,0 Logical block address out of range
> cd0(aic0:1:0): scsi_interpret_sense (bp) returned 22
> cd0(aic0:1:0): free_xs
> cd0(aic0:1:0): calling private start()
> cd0(aic0:1:0): cdstart0 cd0(aic0:1:0): cdclose:  Closing device
> cd0(aic0:1:0): cd0: closing part 0
...
> cd0(aic0:1:0): scsi_done
> cd0(aic0:1:0): command: 1e,0,0,0,0,0-[0 bytes]

Allow removal...

(...)
> extra: 0 0 0 0 20 0 0 0 0 0 

Another 20,0=Invalid Command Operation Code


Peter Dufault               Real Time Machine Control and Simulation
HD Associates, Inc.         Voice: 508 433 6936
dufault@hda.com             Fax:   508 433 5267