From: anne@cco.caltech.edu (Anneliese Lilje)
Subject: Re: Dumps failing on a Maxtor 1.7GB disk
Organization: California Institute of Technology, Pasadena
Date: Fri, 10 Apr 1992 20:14:08 GMT

In article <1992Apr10.045452.24138@netarch.com> rc@netarch.com (Ran-Chi Huang) writes:
>We recently added a Maxtor 1.7GB SCSI disk to a SPARCstation 2 running
>SunOS 4.1.1 Rev B and created 2 filesystems on it.
>
>The disk is a Maxtor Panther P1 SCSI drive and the format command reports:
>
>	sd2: <Maxtor P1-17S cyl 1816 alt 2 hd 19 sec 83>
>
>We have also patched the kernel with the following patch:
>
>	Patch-ID# 100343-04
>	Keywords: 1GB greater, disk, gigabyte
>	Synopsis: SunOS 4.1.1: sd.o patch to access scsi drive capacity
>	                       beyond 1GB.
>	Date: 11/05/91 
> 
>	SunOS release: 4.1.1
> 
>	Topic: 1.3GB Disk Drive Enhancement
>
>Everything looks good except when we try to do a full dump with an
>Exabyte EXB-8200 8mm tape drive.
>
>Dump complains and produces the following error messages:
>
>	DUMP: Date of this level 0 dump: Thu Apr  9 01:07:31 1992
>	DUMP: Date of last level 0 dump: the epoch
>	DUMP: Dumping /dev/rsd2f (/usr/local) to /dev/nrst0
>	DUMP: mapping (Pass I) [regular files]
>	DUMP: mapping (Pass II) [directories]
>	DUMP: estimated 262044 blocks (127.95MB) on 0.07 tape(s).
>	DUMP: dumping (Pass III) [directories]
>	DUMP: dumping (Pass IV) [regular files]
>	DUMP: Tape write error 200 feet into tape 1
>	DUMP: NEEDS ATTENTION: Do you want to restart?: ("yes" or "no") 
>	DUMP: NEEDS ATTENTION: Do you want to restart?: ("yes" or "no") 
>
>The following messages were also generated to /dev/console:
>
>	esp0: Current command timeout for Target 2 Lun 0
>	sd2:    SCSI transport failed: reason 'reset': retrying command
>	sd0:    SCSI transport failed: reason 'reset': retrying command
>	esp0:	Target 3 now Synchronous at 4.0 mb/s ma<3>zs0: silo overflow
>	x<3>zs0: silo overflow
> 	 transmit rate
>	st0:	Error for command 'write', Error Level: 'Fatal'
>    		Block: 1042
>    		Sense Key: Unit Attention
>	esp0:	Target 1 now Synchronous at 3.334 mb/s max transmit rate
>
>Dumps on the other disk drives on the system were completed without
>any problems.

Hmmmm. I have had similar problems dumping disks to 8mm tape with 
EXACTLY the same error messages. The mt commands seemed to all work
fairly well on the drive but when doing:

dump 0ubsdf 100 6000 54000 /dev/nrst1 /dev/rsd1c

or so I get the exact SAME error message. Has ANYONE else had similar
experiences??? 60 Mg tape drive works FINE. the 8mm does not. Any suggestions.

anne
.


>
>Since we purchased the drive, we have been unable to do dumps of any
>sort on the Maxtor 1.7GB drive.
>
>If any netters have any suggestions as to what we can try, we'd really
>appreciate it very much.
>
>Perhaps we need to be putting other patches onto the system ? Because
>of some proprietary software, we are unable to upgrade to SunOS 4.1.2.
>
>As we do not access this newsgroup very often, please email your
>responses. We'll summarize and post a follow-up message in due course.
>
>Thanks for your help !
>
>-rc
>-- 
>--
>Ran-Chi Huang                                               rc@netarch.com
>Network Architecture Consulting., Fremont, CA                   netarch!rc