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Date:      Mon, 24 Mar 1997 19:41:39 +0000 ()
From:      Carey Nairn <cpn@ccd.tas.gov.au>
To:        Doug White <dwhite@resnet.uoregon.edu>
Cc:        questions@freebsd.org
Subject:   Re: adding SCSI disks to 2.1.6
Message-ID:  <Pine.NEB.3.95.970324174752.443B-100000@krondor.cpn.org.au>
In-Reply-To: <Pine.BSI.3.94.970314100438.3361D-100000@localhost>

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Sorry this is getting so long, but to follow up...

I have done the following to try to resolve this problem:

1.  remade the devices in /dev  (no change)
2.  checked termination of SCSI chain etc.  (no problems I can see)

3.  connected the disks to a 2940 controller on another machine
    (dodo) - they are in an external enclosure, with the terminator in the
    same position etc.  In this case I was able to label the disks without 
    any problem, but when I reconnected them to the first machine, the
    problem appeared again.

    The differences between the 2 machines are:

    dodo:  2940 with normally 1 disk on internal bus  (this one works OK
           with the 2 additional disks from anfi)

    anfi:  2x2940 with 8 disks and a tape drive.
           controller 1:  1x2GB disk (sd0)
                          1x4GB disk (sd1)
                          2x9GB disk (sd2,sd3 => ccd0)
           controller 0:  2x4GB disk (sd4,sd5 => ccd1) - this is a very
                                                         busy squid cache
                          1xHP DAT drive
                          2x4GB disk (sd6,sd7) - these are the problem 
                                                 disks)


Could the problem be related to the problems with the ahc driver that were
recently fixed in the 2.1.7.1 point release?  If so, is there any way I
could migrate those changes into my 2.1.6 system in the interim until I
have an opportunity to upgarde the machine.  I need to get these disks
working on the machine so I can update my ftp site (including the FreeBSD
mirrors).

Any other suggestions ??

Thanks,
Carey Nairn

On Fri, 14 Mar 1997, Doug White 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
> 
> 
> 




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