HDTenEightyP/NetNews huggingface dataset:
From: srm@gold.gvg.tek.com (Steve Maraglia)
Newsgroups: comp.sys.sun.admin
Subject: Exabyte 8200 versus 8500 technology
Date: 28 Jan 93 01:53:38 GMT
Distribution: usa
Organization: Grass Valley Group, Grass Valley, CA


What exactly is the difference between the Exabyte 8200 and the
Exabyte 8500 in the way data is written to tape? 

I believe both the 8200 and the 8500 use the helical scan technology, 
how exactly does the 8500 achieve the higher density over the 8200,
is compression used?

If I write a tape on an 8500 connected to a Sun can I read it back on
and 8500 connected to some other plateform (i.e. HP, DEC, IBM)?



Thanks for the info, please send me email and I'll post a SUMMARY.



Steve Maraglia - System Administrator      internet: srm@gold.gvg.tek.com
Grass Valley Group  -  M/S N3-2
400 Providence Mind Rd.  Nevada City, CA 95959   (916) 478-4131
Newsgroups: list.sun-managers,comp.sys.sun.admin
From: peter@dragon.acadiau.ca (Peter Steele)
Subject: Need advice from a FORMAT expert
To: sun-managers-out@ciba-geigy.ch
Followup-To: junk
Reply-To: peter@dragon.acadiau.ca (Peter Steele)
Organization: Acadia University
Date: Tue, 26 Jan 1993 20:26:30 GMT
Return-Path: <sun-managers-relay@ra.mcs.anl.gov>

We've just purchased three Seagate 2.9G drives and I am currently
in the process of setting up filesystem on them. I want to squeeze
as much space out of the drives as possible, so I've been playing
with various disk geometries in the format program. The total
capacity of the disk is 5688447 sectors, so my approach is to
come up with come combination of cylinders/heads/sectors per track
to come as close to this value as possible. Format also requires
that you specify at least 2 spare cylinders for bad sector mapping,
so I've taken that into consideration as well.

I tried the obvious one first, using 80 sectors per track since
that seems to be very common. Why I'm not exactly sure. Perhaps
someone could explain this. In any case, I take the 80 sectors
per track and divide 5688447 by this value. Next comes the number
of heads. I've chosen 21 for this as this is the value listed
in the manual for this disk, although I'm not sure if it makes
a difference or not. So I take the result of the previous
division and come up with 3385, representing the number of
so-called cylinders. This does not work out evenly of course.
If I multiply 80x21x3385, I get 5686800, which is 1647 less
than the 5688447 sectors this disk is supposed to have. Also,
since I have to specify two cylinders as spares, in fact I
lose another 2x21x80=3360 sectors, leaving 5683440 for normal
use. Okay, that's still a lot--this *is* a big disk. However,
I thought I might be able to do better and after playing around
came up with a geometry consisting of 49 sectors per track, 21
heads, and 5528 cylinders. That gives me a total accessible
capacity of 5688312. only 135 less than the listed maximum
of 5688447. I also have to reserve two cylinders, so that's
another 2058 that cannot be used, but the end result is
only 2193 sectors are lost for spares and "round off".

My question is this: What advantage/disadvantage does one
disk geometry have over another, other than giving you more
space for real data. In my second geometry above, is the
2058 spare sectors enough? Is the 3360 in the first more
than I need? How does the disk's physical characteristics
come into play. For this disk, the manual lists that it has
2738 cylinders per head, including 2 spares, and 21 recording
heads. It also mentions that it has 6 spare sectors per cylinder
and various other figures as well. How does all this reflect
on the values I give the format program?

If anyone has an answer, I'd appreciate some advice. Thanks
very much.
-- 
Peter Steele        Unix Services Manager            peter.steele@acadiau.ca 
Acadia Univ., Wolfville, NS, Canada B0P 1X0  902-542-2201  Fax: 902-542-4364
Newsgroups: comp.sys.sun.admin
From: kevinb@dev1.csg.ssd.fsi.com (Kevin Bonifield)
Subject: SUN3/260 Disk System Errors
Date: Fri, 22 Jan 1993 15:16:14 GMT
Distribution: us
Organization: FlightSafety Simulation Systems Division - Tulsa


I have a SUN3/260 (4.1) with two Fujitsu disk drives.  Recently during
level 0 backups I noticed the system reporting the following errors
on the console:
	 xy1g:read restore (disk sequencer error) ...
	 xy1c:read restore (header not found) ...

Suspecting a disk problem I ran sundiag(nostics) which reported the
following:
010.09.999.9085 01/09/93 14:50:43 rxy1c rawtest ERROR: Big read failed on disk, block 1891: I/O error.
999.00.200.7012 01/09/93 14:50:47 tesla sundiag INFO: *Failed test*
 (xy1) rawtest    passes: 0    errors: 1 

fsck reports no problems (other that about 2% fragmentation) on the
drives.

Questions:
  1.  What are the possibilities it is a disk drive as oppossed to the
  disk controller?

  2.  The drive is 5 years old and in constant use.  Could this problem
  possibly be resolved by a re-format (ie-could the alignment be drifting).

  3.  Any suggestions on how to further isolate the problem would be greatly
  appreciated!

  Thanks,
	 //Kevin
----------------------------------------------------------------------------
Kevin Bonifield                        |  Phone: 918-251-0500 x520
Avionics Interface Computer Design     |  Email: kevinb@fsi.com
FlightSafety - Simulator Systems Div   |  Local: bonifiel@tesla
----------------------------------------------------------------------------
Newsgroups: comp.sys.sun.admin
From: marc@jbecpor.demon.co.uk (Marc Wilkinson)
Subject: Access Control Lists for Sun
Organization: John Brown E&C Ltd
X-Newsreader: Tin 1.1 PL4
Apparently-To: mail2news@news.demon.co.uk
Date: Fri, 22 Jan 1993 15:34:37 +0000

I am trying to ensure that my system is a lttle more secure.
Many moons ago I used a the Apollo operating system - AEGIS
this had a nice little access control system implemented, 
allowing the administrator to control access ( read and write )
at individual file level - if desired.
I have no intention of doing that however there are I number of 
files I would like to make more secure.

Does anybody have any ideas.  I am using a SUN IPX - SunOS 4.1.2
Plenty of diskspace available.


Regards 

Marc


-- 
-----------------------------------------------------------------------------
		Marc Wilkinson - marc@jbecpor.demon.co.uk
	John Brown E&C Ltd - Portsmouth, Hampshire, PO1 1HN, UK
From: pushp@nic.cerf.net (Pushpendra Mohta)
Newsgroups: comp.sys.sun.admin
Subject: Caveats for upgrading from 4.1.1 to 4.1.3 ?
Date: 27 Jan 1993 03:52:39 GMT
Organization: CERFnet Dial n' CERF Customer Group
Distribution: world
NNTP-Posting-Host: nic.cerf.net



I am helping a small university plan a Sun OS upgrade on an IPX from
4.1.1 to 4.1.3.

Caveats/Gotchas beyond whatever the Sun documentation will
hopefully provide will be appreciated by email.

Regards
--pushpendra
From: venenga@iscsvax.uni.edu
Newsgroups: comp.sys.sun.admin
Subject: user account without a password, HOW?
Date: 26 Jan 93 13:40:56 -0600
Organization: University of Northern Iowa

Sun Admins:

    Here's another one I couldn't find in the FAQ.  I'm running Solaris 2.1,
and I need to have a user with no password, so that when they log on, they
enter their username, and their shell is run, no password asked for or 
accepted.  I tried to delete the entry from /etc/shadow, but then when I
log on as that user, it tells me that I have no password, and to enter one.
This account is used by hundreds of people, so I can't have that.  If I lock
the password, it won't let me log in.  How do I get an account set so that
no password is needed?  Thanks for the help in advance.

-jay

===========================================================================
Jay Venenga                              Internet: venenga@uni.edu
Systems Programmer                             or: venenga@att1.uni.edu
Information Systems and Computing Services
University of Northern Iowa             USWestNet: (319) 273-2008
Cedar Falls, IA  50614-0509                   FAX: (319) 273-3509

Disclaimer:  Standard

"Thinking for us, basically, is a trick, like a dog walking on two legs.
 It's amazing we can do it at all." - Hans Moravec 
===========================================================================
From: olsenc@stein2.u.washington.edu (Clint Olsen)
Newsgroups: comp.sys.sun.admin
Subject: Running sunupgrade to go from 4.1.2 to 4.1.3
Date: 26 Jan 1993 05:00:59 GMT
Organization: University of Washington, Seattle
Distribution: world
NNTP-Posting-Host: stein2.u.washington.edu

Hello:

I am currently running SunOS 4.1.2 and 4.1.3.  Is the upgrade
process pretty transparent?  I don't want to have to change too
many filesets unless I have to.

Thanks in advance.

Please email.

-Clint
Newsgroups: comp.sys.sun.admin
From: rduff@arrirs04.uta.edu (Robert Duff)
Subject: Problems with X11R5 on Sparc with SunOS 4.1.3...
Organization: Automation and Robotics Research Institute, U Texas @ Arlington
Distribution: comp
Date: Wed, 27 Jan 1993 16:59:44 GMT


We have a Sun SparcStation with SunOS 4.1.3 and GCC 2.3.3...

I retrieved the X11-R5 distribution, applied all patches, changed
site.def to use GCC, and proceeded with: 

	make World BOOTSTRAPCFLAGS="-DNOSTDHDRS"
	
The compile worked fine.

-------------- Problem 1: ----------------

Then I issued:
	
	make install 

It bombed while installing "xterm".

"xterm" had already been built, but install wanted to link
"xterm.inst".  The linker reported that "alloca" was an undefined
symbol.

------------- Problem 2 ---------------

Even those clients that had been installed will not run.  We tried to
execute them from other hosts and every client returns:

	Error: can't open display ***

The DISPLAY variable is set correctly, and "xhost +" has been run on
the server side.

For those who have successfully built R5, are there any more caveats
that I haven't taken into account?

Also, does anyone have an R5 distribution compiled on a SparcStation
with SunOS 4.1.3 that we could possible snag the binaries?

Thanks for any and all responses!

--
--------------------------------------------------------
- Robert Duff
- Research Engineer
- Automation and Robotics Research Institute
- University of Texas at Arlington
- 7300 Jack Newell Blvd. S.
- Fort Worth, TX   76118
- Phone: (817) 794-5936
- FAX:   (817) 794-5952
- rduff@arri.uta.edu
From: larry@ducktales.med.ge.com (Larry Landwehr)
Newsgroups: comp.sys.sun.admin
Subject: Slow Delta 2000T tape drive using restore command
Date: 25 Jan 93 14:15:35 GMT
Distribution: usa
Organization: GE Corporate R&D Center

We've upgraded to OS 4.1.3. Our old Delta Microsystems 2000T tape drive
is now accessed as /dev/rst1. The dump command works just fine for backups,
but restore is excruciatingly slow. Anyone know why?
Newsgroups: comp.sys.sun.admin
From: tkevans@eplrx7.es.duPont.com (Tim Evans)
Subject: Re: uucp using remote serial port
Keywords: uucp remote serial
Reply-To: tkevans@eplrx7.es.dupont.com
Organization: DuPont Engineering Physics Laboratory
X-Newsreader: NN version 6.4.19
Date: Thu, 28 Jan 1993 18:48:59 GMT

boulton@hawk.adied.oz.au (Mark Boulton) writes:

>We wish to set up uucp from one of our SPARC ELC's.  The only problem is
>that the only convenient place to attach the modem is to another machine
>on the network.

>The question I am asking is how (if it is possible) do I get uucp to use
>the serial port on a remote machine.

No, but you could write shell-script wrappers for "uucp" that would
rsh the real uucp on the system where the modem lives.  Several years
ago, a script was published in UNIX WORLD magazine (written by 
yours truly) that did this sort of thing.  YOu can find the
"Wizard's Grabbag" archive at ftp.uu.net in /published/unix-world.
-- 
Tim Evans                     |    E.I. du Pont de Nemours & Co.
tkevans@eplrx7.es.dupont.com  |    Experimental Station
(302) 695-9353/7395           |    P.O. Box 80357
EVANSTK AT A1 AT ESVAX        |    Wilmington, Delaware 19880-0357
Newsgroups: comp.sys.sun.admin
Subject: Re: Bringing a Sun to it's knees
From: oleg@gd.cs.csufresno.edu
Date: 26 Jan 93 16:45:55 PST
Organization: Computer Science Departement of California State University in Fresno

In article <1993Jan25.221022.28758@ra.msstate.edu> fwp@CC.MsState.Edu (Frank Peters) writes:
>In article <T6AXBYAV@cc.swarthmore.edu> eoliver@ralph.cs.haverford.edu (Erik Oliver) says:
>: During our Operating Systems class, we were being asked to see for
>: ourselves that "modern" operating systems place limits on the number of
>: processes an individual user can run thus preventing over load.
>
>Interesting.  Who came up with that theory?  It isn't true and in many
>cases it isn't desirable.
>

SunOS limits a normal user to 25 processes or so. This usually prevents a runaway program
from hanging the system, but won't stop one from crashing the system if that's what you
want. First, this doesn't apply to setuid processes, like many system commands. Also, process
table is not the only finute resource. Try allocate ~32M array in your program and write
bytes in random positions.

I have yet to see the system that survives this:

$ while :
do
	/usr/etc/ping -s localhost >/dev/null 2>&1 &
done

Oleg
From: cbarber@bbn.com (Chris Barber)
Newsgroups: comp.sys.sun.admin
Subject: Re: Solaris 2.1 NFS weirdness
Date: 25 Jan 93 16:12:58 GMT
Organization: Bolt Beranek and Newman (BBN)
NNTP-Posting-Host: litchi.bbn.com

In article <C1DtA8.5w4@lysator.liu.se> pen@lysator.liu.se 
(Peter Eriksson) writes:

>We're having severe problems getting our SS1+ that runs Solaris 2.1
>to NFS mount filesystems from a HP9K3?? running HP-UX 8.0 and a
>Pyramid 90x running dualPort OSx 4.1. The error we get from our
>SS1+ when trying to NFS mount anything from these machines is:
>
> "...RPC: Authentication error; why = Invalid client credential"
>
>Has anyone else seen this and have any suggestion how to fix this?

Sounds like you are running NIS+ on the Solaris machine and it is
unable to get authentication credentials from the HP machine. I 
think what you need to do is to run NIS+ in compatability mode
and create some local credentials for the HP machine. At our site,
we have had all sorts of problems using NIS+, and have given up on
using it at all and merely set up our machines as NIS(YP) clients.

Hope this helps....

-- 
Christopher Barber
(cbarber@bbn.com)
From: craig@brspyr1.BRS.Com (J. Craig Thomas)
Newsgroups: comp.sys.sun.admin
Subject: How do I watch a port?
Date: 25 Jan 93 21:55:16 GMT
Organization: BRS Software Products; Latham, NY


On my Pyramid running OSx (which we are replacing with a Sun) there is a
utility  called xtrap that permits me to allow/disallow certain users to
connect to a particular port.  It will also send me mail about logins on
those ports.

Using  this  I  can permit some but not all users to dial in through our
modems.

Is  there  a  similar  utility  for SunOS 4.1.3?  If there is nothing in
SunOS, is there some PD software that will do the job?  Or,  as  a  last
resort, a commercial package?

			Thanks for any help,
					Craig

-- 
J. Craig Thomas           ||     (518)783-1161
BRS Software Products     ||     ARPA: craig@brspyr1.BRS.Com
1200 Route 7              ||     UUCP: uunet!crdgw1!brspyr1!craig
Latham, NY     12110      ||
Newsgroups: comp.sys.sun.admin
From: aad@siemens.com (Anthony A. Datri)
Subject: Re: Both, Motif and Openwin on a SPARC 2 ?
Organization: Siemens Corporate Research, Princeton (Plainsboro), NJ
Date: Mon, 25 Jan 1993 19:23:24 GMT

>that application.  However, you can only run one window manager, so you'll
>have to choose which style of WM interaction you like.

Unfortunately, some vendors have somehow managed to make products that require
a certain window manager in order to work.  IMHO, a product is broken if it
requires that a window manager be running at all.

Sun's XView clients seem to be consistent offenders.  The ones that I've seen
lack a quit button.
-- 

======================================================================8--<
Newsgroups: comp.sys.sun.admin
From: grabner@gup.uni-linz.ac.at (Siegfried Grabner,GUP-Linz)
Subject: disk striping under sun OS 4.1.x or Solaris 2.1
Reply-To: grabner@gup.uni-linz.ac.at
Organization: Johannes Kepler Universitaet
Date: Wed, 27 Jan 1993 12:01:10 GMT

is anybody out there who DID stripe a logical volume over more than one disk??
i intend to do this under solaris 2.1 (if possible). it would also be interesting
if it is possible under SUN OS 4.1.x. so any hints will be appreciated.

thanks in advance

siegi


 *************************************************************
*                                                             *
*    Siegfried Grabner                                        *
*    Dept. for Graphics and Parallel Processing (GUP-Linz)    *
*    Institute of Computer Science                            *
*    University Linz                                          *
*    Altenbergerstr. 69, A-4040 Linz, AUSTRIA, EUROPE         * 
*    (high mountains, NO kangaroos)                           *
*                                                             *
*    Tel.: ++43-732-2468-884                                  *
*    Fax:  ++43-732-2468-10                                   *
*                                                             *
*    e-mail: grabner@gup.uni-linz.ac.at                       *
*                                                             *
 *************************************************************
From: peter@serv7.essex.ac.uk (Peter Allott)
Newsgroups: comp.sys.sun.admin
Subject: NFS odd behaviour
Date: 22 Jan 93 15:35:51 GMT
Reply-To: peter@serv7.essex.ac.uk (Peter Allott)
Organization: University of Essex, Colchester, UK

I we have a number of DECstation 5000 machine as file servers to some
of our SUN workstations. The DECstations do not trust root on our SUNs
[They cannot just trust root from specified machines and allow acces
 but not trust root on others - this is a moan about DEC and not part
 of this news group.]

The following is a log of a session from a Sparcstation with SUNOS 4.1.2
[I do not think the rev of SUNOS is important]

sersun7-41-% su  
Password:
sersun7# cat cows
cat: write error: Permission denied				- (1)
sersun7# who am i
sersun7!peter    ttyp5   Jan 22 15:16   (solb1)
sersun7# whoami
root
sersun7# exit
sersun7# sersun7-42-% cat cows
cat: write error: Permission denied				- (2)
sersun7-43-% ls -l cows
-rw-------  1 peter       31313 Jun 29  1992 cows
sersun7-44-% df .
Filesystem            kbytes    used   avail capacity  Mounted on
serv0:/ufs/serv0a     945726  394236  456918    46%    /ufs/serv0a
sersun7-45-% cat fred						- (3)
this is a dummy file
sersun7-46-% su
Password:
sersun7# cat fred						- (4)
this is a dummy file
sersun7# ls -l fred
-rw-------  1 peter          21 Jan 22 14:55 fred
sersun7# 

(1) As root I try to access a file on a NFS structure on a machine
    that does not trust root (It is DEC machine).
    Permission denied is correct.

(2) I stop being root.
    I find that I cannot access the file even though I own it.

(3) I try to read another file as me
    This reads OK

(4) I go back to being root
    I can still read the second file. But the remote machine should
    not trust root on the Sun to access my file.
Newsgroups: comp.sys.sun.admin,comp.sys.sun.hardware,comp.sys.hp
From: mihelcic@itd.nrl.navy.mil (Dave Mihelcic)
Subject: Re: Interfacing HP C1503C 4 mm DAT to SPARC2
Organization: Naval Research Laboratory
Date: Thu, 21 Jan 1993 21:34:05 GMT

My last attempt at posting this seems to have failed.
Anyway... I'm trying to hook up an HP C1503C 4mm DAT to a SPARC2.
I don't have any documentation on the beast so any help would
be great.
					Thanks,
					Dave Mihelcic
From: barmar@think.com (Barry Margolin)
Newsgroups: comp.sys.sun.admin
Subject: Re: Swapping parameters and the sticky bit
Date: 28 Jan 1993 17:25:29 GMT
Organization: Thinking Machines Corporation, Cambridge MA, USA
Distribution: na
NNTP-Posting-Host: telecaster.think.com

In article <1k7sp7INNbjt@gondor.sdsu.edu> nash@ucssun1.sdsu.edu (Ron Nash) writes:
>The man page for "sticky" states:
>
>     If the sticky bit is set on a regular file  and  no  execute
>     bits  are  set,  the system's page cache will not be used to
>     hold the file's data. 
>
>Does this mean the system would benefit from setting the sticky bit
>on commonly used programs, emacs, vi, csh, tcsh, in.telnetd?

No.  Notice the part about "no execute bits are set"; these programs
wouldn't be very useful if you turned off their execute bits.  The above
feature is intended only for data files, not executable files.  Read the
sentences in sticky(8) that follows the one you quoted: "This bit is
normally set on swap files of diskless clients...."

The reason for the "no execute bits" is that in earlier releases the sticky
bit had a different meaning for executable files.  On Unix versions that
copied the text segment to swap space (instead of paging out of the
executable), the sticky bit caused it to stay in swap space even when no
process was using it.  This would speed up future invocations since it
didn't have to be recopied.
-- 
Barry Margolin
System Manager, Thinking Machines Corp.

barmar@think.com          {uunet,harvard}!think!barmar
From: guy@Auspex.COM (Guy Harris)
Newsgroups: comp.sys.sun.admin
Subject: Re: Swapping parameters and the sticky bit
Date: 28 Jan 93 18:39:32 GMT
Distribution: na
Organization: Auspex Systems, Santa Clara

>     If the sticky bit is set on a regular file  and  no  execute
>     bits  are  set,  the system's page cache will not be used to
>     hold the file's data. 
>
>Does this mean the system would benefit from setting the sticky bit
>on commonly used programs, emacs, vi, csh, tcsh, in.telnetd?

Only if you also turn the execute bit off on those files - but some
might argue that the system would speed up if you turned *only* the
execute bit off on EMACS - Eight Megabytes and Continually Swapping,
after all.... :-)

I.e., as the section of the manual page you quote says, the sticky bit
on regular files works only for regular files that are *not* executable
- it *doesn't* work on programs.

It's not the traditional UNIX sticky bit, which acted only on
executables, and caused a copy of the executable image to be retained in
swap space (SunOS 4.x doesn't put an image there in the first place, so
there's nothing to retain); it's intended to be used on swap files.
Newsgroups: comp.sys.sun.admin,comp.sys.sun.apps,comp.sys.sun.misc
From: cpcahil@vti.com (Conor P. Cahill)
Subject: Re: SEGV inside malloc() - This shouldn't happen!
Organization: Virtual Technologies Inc.
Distribution: na
Date: Thu, 21 Jan 1993 23:25:57 GMT

mike@sdd.comsat.com (Mike Stennett) writes:

>I am currently porting a program to a SparcStation 2 running SUN/OS 4.1.2.
>The program is written in C, Pascal, and Fortran.  I am using all SUN 
>compilers.  My problem is I am getting segmentation faults within malloc.
>Now I have been writing C programs for 4 years and know that malloc should
>never cause a segmentation faults.

This is almost always due to the fact that you have overrun a previous pointer
returned by malloc and thereby corrupted the "arena" managed by malloc and 
free.  

The solution to your problem is to find where you are overrunning your
data area and fix it.  

There are several products available to help you in this task including:

a) dbmalloc 	- a debugging version of malloc posted to comp.sources.misc
	 	  in Sept of 92 (Volume 32, issues 6-15).  It should be
		  available at an archive site near you.

b) SENTINEL	- our commercial memory access debugger.  Send email, or
		  call 800-296-3000 if you would like additional information.


-- 
*** SENTINEL(tm) The ultimate Debugging Environment - email for more info ***

Conor P. Cahill              (703)430-9247            cpcahil@virtech.vti.com
Virtual Technologies, Inc.  46030 Manekin Plaza          Dulles, VA 20166 
Newsgroups: comp.sys.sun.admin