HDTenEightyP/NetNews huggingface dataset:
From: geertr@sci.kun.nl (Geert Rolf)
Subject: XLF -g option struggles on include files
Summary: xlf -g not capable of properly handling include files
Keywords: xlf -g option has severe problems with include files
Organization: University of Nijmegen, The Netherlands
Date: Fri, 13 Nov 1992 11:46:11 GMT


xlf -g option struggles on include files.

	% xlf -g -o t test.f 
	** test   === End of Compilation 1 ===
	    1517-009: (U) Error in compiler runtime system; compilation ended.
	xlf: 1501-230 Internal compiler error; please contact your IBM representative

Observe the following stripped down example:

File "COMMON":
	common /a_common/ a(idim)

File "SIZES":
	parameter(idim=1000)

File "test.f":
      program test
      include 'SIZES'
      end
c
      subroutine sub1
      include 'SIZES'
      include 'COMMON'
      end

Without -g it compiles properly. If you change test.f by including SIZES yourself:
      program test
      include 'SIZES'
      end
c
      subroutine sub1
      parameter(idim=1000)
      include 'COMMON'
      end

the -g works too.

So: -g has problems with include files!!.

We run AIX 3.2.0 using XLF with magic numbers: 02.02.0100.0003

---------------------
Geert Rolf
Informatische Chemie & Fysica
Univ. of Nijmegen.
Newsgroups: comp.unix.aix,comp.unix.questions,comp.unix.wizards,comp.unix.programmer
From: esg@pyuxd.uucp (25235-gokhman)
Subject: mmap() with shared access fails over NFS using AIX 3.2 on RS 6000
Organization: Bellcore, Livingston, NJ
Date: Thu, 12 Nov 92 15:27:10 GMT
Keywords: memory mapped files over NFS - is there a problem for write ?

Hello netters,

I am trying to do mmap-ing to a file accross NFS using the following
arguments:

 caddr_t pointer = mmap(0, file_length, PROT_READ | PROT_WRITE,
                MAP_FILE | MAP_VARIABLE | MAP_SHARED, fd, 0);

It appears to be successful. However, when I am trying to write
to the pointed region I get segmentation faults. Segmentation faults
do not necessarily occur right at the start of the region but also
in the middle and almost at the end at what seems to be page breaks,
e.g. location 4096 with 0-4095 bytes written successfully. The problem
does not occur when files are not NFS mounted. I am aware of the fact
that the earlier versions of mmap() under AIX 3.1.X were not allowing
writes over NFS, but my understanding is that AIX 3.2 and up do not
have this limitations - manuals at least do not mention it. Could it
be a router-related problem ? Help !!!

Following is the program that I use to examine this situation. Again,
it always failed over NFS and always worked locally on the same set
of files:

=========================== CUT HERE ==============================

				Thanx in advance,
				Ed Gokhman

#	include		<stdio.h>
#	include		<stdlib.h>

#	include		<sys/stat.h>
#	include		<sys/signal.h>
#	include		<fcntl.h>
#       include 	<unistd.h>

#	include		<errno.h>

#	include		<sys/mman.h>
#       include         <sys/stat.h>
#       include         <sys/mode.h>
#       include         <sys/file.h>
#	include		<unistd.h>

char *ptr;

caddr_t pointer;

void bus_err_or_segment (int sig)
{
   fprintf (stderr, "Can not finish this test at byte=%ld", ptr - (char *)pointer);
}

main (int argc, char **argv)
{
	size_t	file_length;
	struct stat  statbuf;
	int	fd;

	if (argc < 2) {
	  fprintf (stderr, "Usage: check <filename>\n");
	  exit (1);
	}
	(void) signal ((int) SIGBUS, (void (*)(int)) bus_err_or_segment);
	(void) signal ((int) SIGSEGV, (void (*)(int)) bus_err_or_segment);

	if (!stat(argv[1], &statbuf))
	{
	   if (!(file_length = statbuf . st_size))
	   {
	      fprintf (stderr, "%s - empty file\n", argv[1]);
	      return;
	   }
	}
	else
	{
	      fprintf (stderr, "%s - does not exists\n", argv[1]);
	      return;
	}

	fprintf (stderr, "Mapping %ld bytes in %s\n", file_length, argv[1]);

	if ((fd = open ( argv[1], O_RDWR, 0660 )) == -1)
	{
	   fprintf(stderr, "Can not open %s with O_RDWR - %s\n", argv[1], strerror(errno));
	   exit (1);
	}

	errno = 0;

	pointer = mmap(0, file_length, PROT_READ | PROT_WRITE,
		MAP_FILE | MAP_VARIABLE | MAP_SHARED, fd, 0);

	if (pointer == (caddr_t) -1 || errno)
	{
	   fprintf(stderr, "Can not map %s - %s\n", argv[1], strerror(errno));
	   return;
	}

	for (ptr = (char *)pointer; ptr < (char *)pointer + (int) file_length; ptr++) {
	   char a = *ptr;
	   *ptr = a;
	}
	munmap (pointer, file_length);
	fprintf(stderr, "Success for %s\n", argv[1]);
}


Newsgroups: comp.unix.aix
From: mhmann@nyx.cs.du.edu (Me Mann)
Subject: Re: Problems with Printer-Accounting
X-Disclaimer: Nyx is a public access Unix system run by the University
	of Denver for the Denver community.  The University has neither
	control over nor responsibility for the opinions of users.
Keywords: Printer,Accounting
Organization: Nyx, Public Access Unix at U. of Denver Math/CS dept.
Date: Thu, 5 Nov 92 06:16:39 GMT

In article <1cljraINNi9g@network.ucsd.edu> dkf@chem.ucsd.edu (David Knight French) writes:
>In article <1992Oct27.142545.36422@news.th-darmstadt.de> kehr@rs3.hrz.th-darmstadt.de (Roger Kehr) writes:
>> I tried to turn on Printer-Accounting by inserting
>>  acctfile = /var/adm/qacct
>> into the different queues in /etc/qconfig.

>	Well, I asked an IBM tech support guy from the printer async
>	group when I had another problem with printing in AIX v3.1.7
>	and he told me that setting ' acctfile = /var/adm/qacct' does 
>	NOT work for PostScript printers.  He said it had something to
>	do with the way piobe thinks of these printers.  I believe
>	he said piobe treats them as passthru, thus no accounting info
>	is returned.
>

Absolutely. The piobe does not know how to get the PS pagecount.  The
routine get_pagecount()? in the libdp.a(?) cannot work for a PS
printer. What a shame.  Have anyone out there written a back end
program that can do the print accounting?  What's the reason IBM left
this out?  Could it be because some PS printers can't talk back to report
pagecount?  Off hand I can think of two ways to check the number
of pages printed: (1) from the pagecount on the printer and (2).. pass
the PS file through a PS parser to determine the number of pages.  The
problem is communicating this to the qdaemon which actually write to
qacct....  hence rewriting the piobe. Anyone done this?

-Mann
From: tex@bigtex.austin.ibm.com (Glen Tex Chalemin)
Newsgroups: comp.unix.aix
Subject: Re: Mail notification
Date: 5 Nov 92 23:43:12 GMT
Reply-To: chalemin@austin.vnet.ibm.com
Distribution: usa
Organization: AIX Technical Support - Austin
Originator: tex@bigtex.austin.ibm.com


In article <700@wavefront.wti.com>, bill@wavefront.wti.com (Bill Kovacs) writes:
> Note: I am borrowing an account, please to not mail any responses back
> to this person. Please post the answers. thanks
> 
> 1. Where is a anonymous FTP site that has public domain aix stuff like
> a program to play CD's  on the rs6000??
> 
> 2. Is there something special that needs to be done to have mail
> notification when mail arrives? Biff is y and I am running csh. 
> /etc/profile has MAIL and MAILMSG set. I still get no notification.
> Thanks ahead.

Make sure the comsat daemon is running.  Check your /etc/inetd.conf
file for the line beginning with comsat.  If it starts with a '#' it
isn't going to be started by the inetd.  

At the bottom of the biff command article in info, there is a section
called "Related Information".  Click on "comsat".

-- 
Glen 'Tex' Chalemin  IBM AWD-Austin   512-838-4673   FAX: -4851
tex@austin.ibm.com  or    CHALEMIN at AUSTIN
#include <std/disclaimers.h>
From: kate@wavefront.wti.com (Kathy Samec)
Newsgroups: comp.unix.aix
Subject: open files
Date: 11 Nov 92 20:05:58 GMT
Article-I.D.: wavefron.735
Distribution: usa
Organization: Wavefront Technologies Inc, Santa Barbara, CA

This may be a very easy question but I don't know how:

Is there a command that I can use to see what files or filesystems
are being accessed at a particular time on the RS6000s?  This is
about knowing who is actively using exported NFS directories. 

Thanks

-- 
*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
Kathi Samec			- Everything is beautiful and
Santa Barbara Studios		  Nothing hurt.
kate@wti.com					-Stoney Stevenson
From: rick@msc.cornell.edu (Rick Cochran)
Newsgroups: comp.unix.aix
Subject: Security?
Date: 5 Nov 92 19:15:59 GMT
Organization: Cornell-Materials-Science-Center

Right from "info":

"How to Set Up NIS Client Files to Use NIS Services"

"Edit the /etc/hosts.equiv file to add a single line, with only the +
(plus) character on it.  This allows anyone to log on to the machine
because all further entries are retrieved from NIS rather than the
local file."

This is both factually incorrect and fabulously dangerous.

|Rick Cochran		  607-255-7223		     rick@msc.cornell.edu|
|Cornell Materials Science Center		     rick@crnlmsc2.bitnet|
|E20 Clark Hall, Ithaca, N.Y. 14853	     cornell!msc.cornell.edu!rick|
-- 
|Rick Cochran		  607-255-7223		     rick@msc.cornell.edu|
|Cornell Materials Science Center		     rick@crnlmsc2.bitnet|
|E20 Clark Hall, Ithaca, N.Y. 14853	     cornell!msc.cornell.edu!rick|
From: peba1231@camillo.fb12.tu-berlin.de (Peter Bartsch)
Newsgroups: comp.unix.aix
Subject: Re: How to redirect outputs from the command "time" into a file?
Date: 10 Nov 1992 15:52:50 GMT
Organization: TU Berlin, Inst. f. Luft- und Raumfahrt, FRG
Distribution: world
Reply-To: peba1231@camillo.fb12.tu-berlin.de
NNTP-Posting-Host: camillo.fb12.tu-berlin.de

>Hello, everyone:
>
>My first question is about saving outputs from the timing command
>"time" into a file. I tried "time a.out > a.time", but it did not
>work. How to capture the outputs into a file? ( I am running
>AIX3.2 on RS/6000 model 550).

In (t)csh, run your job within a subshell, like this:

% (time some-important-program > vip_output) > time_output

If you prefer to have both outputs in the same file:

% (time some-important-program > vip_output) >> vip_output

Peter 

----------------------------------------------------------------------
Peter Bartsch        |   Tel.    +49 (0)30 314 23093
TU Berlin, Sekr. F2  |   FAX:    +49 (0)30 314 22866
Marchstr. 14         |
1000 Berlin 10       |   e-mail: peba1231@camillo.fb12.tu-berlin.de
----------------------------------------------------------------------
From: marcel%mlogic.uucp@usc.edu (Marcel Samek)
Newsgroups: comp.unix.aix
Subject: Help: child processes not exiting properly.
Date: 10 Nov 92 02:20:21 GMT
Reply-To: marcel%mlogic.uucp@usc.edu
Organization: Media Logic Incorporated


I have a problem which manifests itself under AIX 3.2, but not under other  
flavors of unix (SunOS & Mach) that I've tried. 

It boils down to this:

I create a child process with fork(). The child process decides to either  
kill() itself, or exit with exit() or _exit().

The result is that the child process hangs around in a limbo state (shows up as  
"defunct" when one issues a ps command). 

My question is this: is there any way to get the child to go completely away?

Marcel
marcel%mlogic.uucp@usc.edu

p.s.: [My apologies if this has been covered here before; I'm not a regular  
subscriber to this group and don't have access to any archives.]
From: cwright@mickey.WPI.EDU (Charles R. Wright)
Newsgroups: comp.unix.aix
Subject: Alternatives to IBM's AIC
Date: 12 Nov 1992 19:19:26 GMT
Organization: Worcester Polytechnic Institute, Worcester, MA
Distribution: world
NNTP-Posting-Host: mickey.wpi.edu


Hello,

I need a package like IBM's AIC (AIXwindows Interface Composer) to
construct X programs without alot of programming.

However, before I go recommending to my advisors that we buy AIC, I
would like to know if there are other similar packages out there, free
or otherwise.

Anyone know of such software packages?  Please respond by email and I
will post a summary if there is interest.

Thanks,

--
Charles Wright        Research Assistant, Machine Vision Lab, ECE Dept.
cwright@ee.wpi.edu    De facto system manager for an IBM RS-6000
     "To have so many windows on my screen, I lose consciousness"

Newsgroups: comp.unix.aix
From: rmwise@mcigate.apdev.mci.com (Bob_Wise)
Subject: Re: ************ HELP: Defunct processes with XDM
Date: Sun, 8 Nov 1992 00:31:42 GMT
Organization: MCI

In article <hm292hu.720916058@unidui> hm292hu@unidui.uni-duisburg.de (Fred Hucht) writes:
>In <1992Nov04.171144.1154@dircon.co.uk> uad1216@dircon.co.uk (Hugh Neale) writes:
>
>>We're having trouble with the XDM in Xamples (AIX 3.2.1) with
>>defunct processes, after a user logs off.
>...
>>Can you help?
>
>Try to recompile xdm from the distribution. At our site this helped to get
>rid of the defuncts. We have AIX 3.2.2 (or 3.2.3, our machines are not so
>shure ;-). Hope this helps...
>
>Fred Hucht, Institute of Theoretical Physics, University of Duisburg, Germany
>EMail: fred@hal6000.Uni-Duisburg.DE


We had a similiar problem when we installed 3.2.2.

IBM did the incredible thing of removing calls from libC.a.  Ack!

Recompiling xdm fixed it.

I bet you are using the X11R5 xdm.  It will NOT work properly under
3.2.2 because of the above problem.

IBM decided to rewrite their version of xdm to work with the new 3.2.2
libc. How incredibly stupid. (And how typical) :-(

The calls missing from the "new and improved" libc are the crypt and
decrypt calls.  This broke a bunch of our other software, too.

How does this kind of crap get through a review process at IBM?  How
could anyone approve changes of this kind to libc?

By the way, the documentation still lists this call.

-Bob
-- 
---------------------------------------------------------------------------
| Bob Wise          | INET:622-1322 | MCIMail:rmwise | Pager:719-577-1928 |
| Unix Consultant   |-----------------------------------------------------|
| Consultant to MCI | Phone:719-592-1322 | Internet:rmwise@apdev.mci.com  |
Newsgroups: comp.unix.aix
From: pack@acd.acd.ucar.edu (Daniel Packman)
Subject: Troubles with rmt
Summary: Only works partially for all tape drives
Organization: Ntl Center for Atmospheric Research, Atmospheric Chemistry
Date: Tue, 10 Nov 1992 21:18:36 GMT

We are having problems with /etc/rmt aka /usr/sbin/rmt
Usually, this is used via rsh or rexec to remotely access
tape drives via a simple series of one or two line ascii requests.
We find that we can open a tape (eg, /dev/rmt0), but if we
rewind the tape drive, we cannot read from it.  We find that
all status commands abort with a core dump.  One can run this
on the local machine for testing:

$ rmt
O/dev/rmt1.5
0       <-- zero is a request for a read-only open
A0      <-- success of the open indicated here
I5      <-- initiate the ioctl
1       <-- issue the rewind
A1      <-- success of the rewind indicated here
R80     <-- issue a read request
E46     <-- error of the read indicated here
The device is not ready for operation.  <--- english version of E46
C       <-- close the drive
A0      <-- success of the close indicated here
S       <-- try to stat the rmt system
Segmentation fault (core dumped)

If we leave out the I5/1 rewind, then the read works as expected.  The
S (stat) command will core dump whether the tape drive has been opend
or not.  Any of this look familiar to anyone?

--
Dan Packman     NCAR                             INTERNET: pack@ncar.UCAR.EDU
(303) 497-1427  P.O. Box 3000
                Boulder, CO  80307-3000        NSI/DECNET: 9583::PACK
From: gordt@muug.mb.ca (Gordon Tulloch)
Newsgroups: comp.unix.aix
Subject: termcap entry not found error
Summary: Programs that can't find the termcap?
Keywords: termcap terminfo
Date: 10 Nov 92 16:13:38 GMT
Article-I.D.: muug.1992Nov10.161338.8572
Organization: Manitoba Unix User Group, Winnipeg, Manitoba, Canada

Folks:

I seem to have this problem with every PD program I port to my RS/6000, and
based on my very fuzzy knowledge of terminfo v. termcap (I remember the good
'ol days when termcap was it) I'm not sure how to correct it.
 
I've installed both emacs and rn easily, but cannot execute them due to an
error that pops up "Termcap entry not found" or somesuch.  I'm running an
ibm3151 and wyse50s, and assumed that these programs would look in the
terminfo files for the info they need - the source looks like it's calling
curses for terminal info, although I couldn't find the function reference
in my (incomplete) man pages.  I added an entry for the ibm3151 into the
/etc/termcap file but nothing doing, still won't work.  Could someone who
groks this stuff clue me in?
 
Regards,
  Gord
From: lu@tristar.NoSubdomain.NoDomain (James Lu)
Newsgroups: comp.unix.aix
Subject: gdb's loading problem
Keywords: loading problem with gdb
Date: 11 Nov 92 15:22:53 GMT
Organization: Samsung Software America

gdb (version 4.6) dumps core consistently each time I try to load
in a large executable (~ 20MB) compiled with gcc-2.2 under
RS6000/AIX-03.01.0005.0012.

Any information regarding this will be appreciated.


James Lu
-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
James Lu					lu@samsung.com
Samsung Software America			...uunet!samsung!lu
One Corporate Drive				Voice: (508) 670-7200 x312
Andover MA 01810				Fax: (508) 685-4940
From: russotto@vnet.ibm.com
Date: Thu, 12 Nov 92 08:58:45 EST
Newsgroups: comp.unix.aix
Subject: Re: Help: child processes not exiting properly.
Disclaimer: This posting represents the poster's views, not those of IBM
News-Software: UReply 3.0
            <1992Nov11.191625.2765@awdprime.austin.ibm.com>

In <1992Nov11.191625.2765@awdprime.austin.ibm.com> Jeff Peek writes:
>The parent must either issue a wait system call (wait3, waitpid or wait), or the
>parent must set the action for the SIGCHLD signal to SIG_IGN. Otherwise the proc
>table entry for the child (and that is all that is left) will continue to hang
>around waiting for the parent to collect the exit status.

I'm not sure setting SIGCHLD to SIG_IGN is always good enough-- here's
a situation I think I've observed:
Process A (SIGCHLD == SIG_IGN) forks and execs Process B
(SIGCHLD == SIG_DFL).  Process B forks off Processes C and D, which then
die, leaving zombies.  Process B then dies.  Process B's zombie goes
away, but the zombies of C and D remain, as children of A.  The only
way I know to avoid this (assuming you can't make all possible 'B's work
properly) is to set up a signal handler for SIGCHLD in A which wait3s
until all the zombies are gone.

.
QUIT
From: hm292hu@unidui.uni-duisburg.de (Fred Hucht)
Newsgroups: comp.unix.aix
Subject: X11R5pl17 xdm won't run under AIX 3.2.2.
Date: 8 Nov 1992 01:08:34 +0100
Organization: Universitaet Duisburg GH
NNTP-Posting-Host: unidui.uni-duisburg.de

Hello World, I am trying to run xdm R5pl17 on our RS6000s (320,340).
After eight times flicker-flacker xdm goes to sleep and no X is running.

Can anybody help?

Thanks in advance...

Fred Hucht, Institute of Theoretical Physics, University of Duisburg, Germany
EMail: fred@hal6000.Uni-Duisburg.DE

Newsgroups: comp.unix.aix
From: marcel@duteca.et.tudelft.nl (Marcel J.E. Mol)
Subject: AIX 3.2.1: xdm leaves defunct processes
Keywords: X-windows AIX xdm defunct
Organization: Delft University of Technology, Dept. of Electrical Engineering
Date: Thu, 12 Nov 1992 22:24:42 GMT

I have several RS6ks running AIX3.2.1. Every time a users logs in
via xdm a defunct process remains after the user logs out. 
The xdm daemon probably forgets to wait() for it's children.
Anyone seen this too, and did some fixing around?

-Marcel
-- 
#########################################
# Marcel J.E. Mol                       ######################################
# Delft University of Technology          Pink Elephant B.V.                 #
# The Netherlands                         Voorburg                           #
# inet: marcel@duteca.et.tudelft.nl       Tel: 070-3694231                   #
#                      	  (Tel private: 070-3361515)                         #
##############################################################################
From: rmilner@zia.aoc.nrao.edu (Ruth Milner)
Newsgroups: comp.unix.aix
Subject: Re: Owner of /home file system reset.
Date: 11 Nov 92 23:47:07 GMT
Article-I.D.: zia.1992Nov11.234707.6607
Reply-To: rmilner@zia.aoc.nrao.edu (Ruth Milner)
Organization: National Radio Astronomy Observatory, Socorro NM

In article <BxK6K6.51K@ecf.toronto.edu> elder@ecf.toronto.edu (ELDER J David) writes:
>
>Hi there! I have an RS6000/320 running AIX 3.2.2 and I have an 
>annoying situation. The ownership of the /home filesystem was changed
>to the name of the last user I created. 

Did you by any chance do something like the following:

    cd /home/newuser
    chown newuser *
    chown newuser .*
?

If so, that last chown is your problem, because .* also matches .. . What you
want to do is "chown newuser .[A-z]*" instead.

How did I learn this? Guess ... :-)
-- 
Ruth Milner                          NRAO/VLA                  Socorro NM
Computing Division Head      rmilner@zia.aoc.nrao.edu
From: jcburt@gatsibm.larc.nasa.gov ()
Newsgroups: comp.unix.aix
Subject: Re: Greeting Window
Date: 10 Nov 1992 15:37:37 GMT
Organization: NASA Langley Research Center
NNTP-Posting-Host: gatsibm.larc.nasa.gov

In article <1689576EB.CCDH001@UTXVM.CC.UTEXAS.EDU> CCDH001@UTXVM.CC.UTEXAS.EDU writes:
>Here's the deal.  We have a friendly wager on who will be first to figure
>out how to get rid of that damn Greeting Screen after doing an xinit.  I
>figured out about putting xdt3.message.timeout: 1 in .Xdefaults but that
>only prevents the text from being displayed.  The window still comes up
>and hangs around for a minute or so.  Can someone help?  Please?
> 
>                                         <@>
Stupid question...what damn Greeting Screen? Do you have an .xinitrc file
in your home directory? if not, get a copy from /usr/lpp/X11/defaults
(the file is xinitrc in the defaults subdir, but it should be .xinitrc
in *your* home dir.) and edit/comment out the part about xdt3, i.e. :

  if [ -x /usr/lpp/X11/bin/xdt3 ]
  then 
          /usr/lpp/X11/bin/xdt3 &
  fi


John


Newsgroups: comp.unix.aix
From: lucien@watson.ibm.com (Lucien Van Elsen)
Subject: Re: Access another process data segment(s)/address space	
Date: Tue, 10 Nov 1992 15:13:13 GMT
Disclaimer: This posting represents the poster's views, not necessarily those of IBM
Organization: IBM T.J Watson Research Center

mhe@hal.uio.no (Morten Hermanrud) writes:

>Is there any way process A can 'attach' process B's address space ?

The ptrace() syscall is what you're looking for; you can attach a process
and then read/write to it's address space.  Info gives more complete
information on how to use it.

	-Lucien

--
-----------------------------------------------------------------------
Lucien Van Elsen                                          IBM  Research
lucien@watson.ibm.com                                     Project Agora
From: bengsig@dk.oracle.com (Bjorn Engsig)
Newsgroups: comp.unix.aix
Subject: Re: Executable Files
Date: 5 Nov 92 13:26:58 GMT
Reply-To: bengsig@dk.oracle.com (Bjorn Engsig)
Organization: Oracle Denmark

Article <1992Nov3.165855.11611@kakwa.ucs.ualberta.ca> by niu@prancer.eche.ualberta.ca (Shaohua Niu) says:
| I used to have a FTP cite where I can download binary files
Try:

Harpo.seas.ucla.edu is 128.97.2.211,  Aliases:  aixpdslib.seas.ucla.edu
-- 
Bjorn Engsig,	       Internet: bengsig@oracle.com   uucp: uunet!oracle!bengsig
ORACLE Corporation.    Private : bjorn@login.dkuug.dk.

  Memory used by any program never changes, if memory is measured in dollars.
Newsgroups: comp.unix.aix
From: marc@watson.ibm.com (Marc Auslander)
Subject: Re: /tmp Corrupted
Date: Mon, 9 Nov 1992 20:48:41 GMT
Disclaimer: This posting represents the poster's views, not necessarily those of IBM
Organization: IBM T.J. Watson Research Center, Hawthorne, New York

Just to be clear about 'fsck should not be run on mounted file
systems'.  If you do it, you will almost always get reports of a
damaged file system.  These reports are spurious and are caused by a
mismatch between what is written on disk and the actual state of the
file system.

Since metadata changes not yet written to disk have been logged, the
file system will be okay even after a crash, since logredo will update
the disk image.
--


Marc Auslander       (IBM)<marc@marc.watson.ibm.com>      914 784-6699
                     (Internet)<marc@watson.ibm.com>
Newsgroups: comp.unix.aix