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Date: Sat, 15 Mar 1997 17:18:11 +0000 ()
From: Carey Nairn <cpn@ccd.tas.gov.au>
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To: Doug White <dwhite@resnet.uoregon.edu>
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Subject: Re: adding SCSI disks to 2.1.6
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Thanks Doug,  I'll check the termination again when I get back to work on
Monday.  I have already remade the devices a couple of times.

On Fri, 14 Mar 1997, Doug White wrote:

> On Fri, 14 Mar 1997, Carey Nairn wrote:
> 
> > I have tried the methods given in Doug's makedisk.txt to add 2 new 4GB SCSI
> > disks to my system to no avail.  The error I get at the 
> > 
> > 	dd if=/dev/zero of=/dev/rsd6 count=2 
> > 
> > stage is 
> > 
> > 	dd: /dev/rsd6: Device not configured
> > 
> > I have also tried using sysinstall to add the disks, but they don't get
> > listed as available disks to partition.
> > 
> > The disks are detected at bootup as shown here:
> 
> I'll prune this down to the disks in question.
> 
> > Mar 14 12:23:05 anfi /kernel: (ahc0:4:0): "IBM DCAS-34330 S61A" type 0
> > fixed SCS
> > I 2
> > Mar 14 12:23:05 anfi /kernel: sd6(ahc0:4:0): Direct-Access 4134MB (8467200
> > 512 b
> > yte sectors)
> > Mar 14 12:23:05 anfi /kernel: (ahc0:5:0): "IBM DCAS-34330 S61A" type 0
> > fixed SCS
> > I 2
> > Mar 14 12:23:05 anfi /kernel: sd7(ahc0:5:0): Direct-Access 4134MB (8467200
> > 512 b
> > yte sectors)
> 
> Now note which disk is spitting out errors here, it's sd7, not the disk
> you're trying to modify.
> 
> > Mar 14 14:26:04 anfi /kernel: sd7(ahc0:5:0): timed out in datain phase,
> > SCSISIGI == 0x44
> > Mar 14 14:26:04 anfi /kernel: sd7(ahc0:5:0): asserted ATN - device reset in
> > message buffer
> > Mar 14 14:26:06 anfi /kernel: sd7(ahc0:5:0): timed out in datain phase,
> > SCSISIGI == 0x54
> > Mar 14 14:26:07 anfi /kernel: ahc0: Issued Channel A Bus Reset #1. 3 SCBs
> > aborted
> > Mar 14 14:26:07 anfi /kernel: sd7: error reading primary partition table
> 
> To me, this points to two possibilities:
> 
> 1.  Your device files are wrong for some reason.  You could try rebuilding
> them with '/dev/MAKEDEV sd6'.
> 
> 2.  You have a termination problem.  Make sure your SCSI chains follow the
> rules for termination laid out in the manual for your 2940.
> 
> Doug White                              | University of Oregon  
> Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
> http://gladstone.uoregon.edu/~dwhite    | Computer Science Major
> 
> 
>