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Date: Fri, 5 Jul 1996 19:46:43 BST
From: Michael Ryan <mike@NetworX.ie>
Reply-To: mike@NetworX.ie
Subject: SCSI timeout on HP 2GB DAT
To: FreeBSD Support <questions@freebsd.org>
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Hello all,

I'm doing a backup to a HP SureStore 2000 2GB DAT drive
attached to an Adaptec 2940 PCI SCSI adapter on a
FreeBSD 2.1 120MHz Pentium, from a remote machine on the
network.
A bare-bones listing of the script to perform the backup
is as follows:

        find / -depth -print |
        cpio -o -H newc -C 65536 |
        gzip -c |
        dd obs=64k |
        rsh tapehost -l tape dd obs=64k of=/dev/rst0

The file ~tape/.rhosts on tapehost is okay.  The backup
runs fine, until around 92MB is transferred, then the
following error messages appear on the console and the
backup aborts.

Anybody got any ideas what's wrong?

Kernel error messages:
st0(ahc0:3:0): NOT READY asc:4,1
st0(ahc0:3:0): Logical unit is in process of becoming ready
ahc0: target 3, lun 0 (st0) timed out
st0(ahc0:3:0): BUS DEVICE RESET message queued.
ahc0: target 3, lun 0 (st0) timed out
st0(ahc0:3:0): UNIT ATTENTION asc:28,0
st0(ahc0:3:0):  Not ready to ready transition, medium may have changed
ahc0: Issued Channel A Bus Reset #1. 1 SCBs aborted
st0(ahc0:3:0): UNIT ATTENTION asc:29,0
st0(ahc0:3:0):  Power on, reset, or bus device reset occurred

Error message from dd:
dd: /dev/rst0: Input/output error


Thanks for any help,
Mike
<mike@NetworX.ie>
---