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Grex Helpers Item 65: System Problems [linked]
Entered by valerie on Sun Dec 21 23:12:14 UTC 1997:

This item text has been erased.

263 responses total.



#1 of 263 by tpryan on Mon Dec 22 05:05:14 1997:

        What with busy signal on fast modems, while ringing open
on slow modems?


#2 of 263 by valerie on Tue Dec 23 05:27:10 1997:

This response has been erased.



#3 of 263 by albaugh on Tue Dec 23 16:10:16 1997:

FWIW, I find that the browse [item headers] command ("b") is one of the
slowest command of picospan.  If it would make it faster to omit [finding out
about] the number of responses, whether it were linked or frozen, then I'd
vote for doing that.


#4 of 263 by orinoco on Wed Dec 24 03:51:34 1997:

When I dialled 7615041 just recently, I got the message that I was connected,
but I never got a login prompt - instead I started recieving tels immediately,
even though I was not yet logged onto grex.  What gives?


#5 of 263 by valerie on Wed Dec 24 04:26:38 1997:

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#6 of 263 by valerie on Wed Dec 24 04:27:26 1997:

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#7 of 263 by senna on Wed Dec 24 04:47:47 1997:

#4:  happened to me as well, minus the tels


#8 of 263 by mcnally on Wed Dec 24 06:50:43 1997:

  Why is it that fairly frequently (perhaps one in eight or one in ten
  times..) when I log in through telnet the system will get to just about
  the point where I'd get my shell prompt and then fall back to the login:
  prompt?  (my best guess is that it has already started my login shell at
  this point but it could be that it's failing to spawn the shell properly
  for some reason (like being out of memory or processes..))  FWIW I use
  tcsh and have very bare-bones dotfiles..


#9 of 263 by remmers on Wed Dec 24 12:35:18 1997:

For reasons that I don't think we know, tcsh crashes during
startup under certain circumstances, dumping you back to the
login prompt. Happens to me occasionally too. It also tends to
leave a largish core file in your home directory, so the next
time you log after a tcsh crash, you might want to check and see
if there's a core file there.


#10 of 263 by mcnally on Thu Dec 25 06:17:37 1997:

re
  Either the cron job that finds and removes old core files is extremely
  vigilant or tcsh makes it as far as "limit coredumpsize 0" when it's going
  through my dotfiles..


#11 of 263 by valerie on Thu Dec 25 14:14:40 1997:

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#12 of 263 by mcnally on Fri Dec 26 06:42:12 1997:

  Yeah, come to think of it I guess that the "limit coredumpsize 0" would
  affect the processes forked by my tcsh but wouldn't be likely to have
  much effect on the core-dumping properties of the running tcsh process.
  What I suppose I *should* do, just in case, is create a 0 byte "core"
  file in my homedir and chmod or chown it so I don't wind up with a real
  corefile in there unless I want one..


#13 of 263 by kaplan on Fri Dec 26 20:17:59 1997:

I've linked this item from Winter to helpers.

Re open ringing, isn't centrex supposed to be programmed to forward open
ringing lines to other lines?  When you say you get open ringing, how long
have you waited?  It might take some time for the forwarding to happen.


#14 of 263 by dpc on Sat Dec 27 17:46:08 1997:

Does "ttyuse" work?  Every time I try it get nothing and have to
interrupt out after several minutes.


#15 of 263 by gerund on Sun Dec 28 08:49:06 1997:

Seems to be stuck.  Not doing anything for me either.


#16 of 263 by davel on Mon Dec 29 17:18:56 1997:

-3000 was ringing open earlier today.  From the pattern of rings it may have
been trunk hunting, I suppose, but it just rang & rang.  I then tried 5041
& got a modem, but it wouldn't connect with my 2400 bps modem.  <sigh>


#17 of 263 by danr on Mon Dec 29 17:53:06 1997:

The HVCN server seems to be down, meaning the Backtalk images
are kaput.


#18 of 263 by scott on Mon Dec 29 19:02:22 1997:

Grex was down this morning, which was likely your problem, Dave.


#19 of 263 by srw on Tue Dec 30 06:41:52 1997:

I thought HVCN had crashed this morning, too. It was not responding, and 
Dan was correct to note that it seemed down.

I went down at lunchtime to check on it and reboot it, but I found that 
it had just gotten its ethernet unplugged. I plugged it back in and 
everything was back to normal. HVCN was off the net from 11:12 am 
until 12:50 am. Looks like it got fixed just about the time Dan 
posted that.

Current HVCN uptime = 76 days.



#20 of 263 by valerie on Wed Dec 31 06:08:19 1997:

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#21 of 263 by dpc on Wed Dec 31 18:00:44 1997:

Thanx, valerie!


#22 of 263 by srw on Fri Jan 2 23:07:49 1998:

There has been a problem with people connecting to grex by telnet from 
some places. this has not affected most grex users. We don't really know 
which machines were affected, but we received complaints from a number 
of users in India. One whole domain was affected there. Other users on 
selected machines elsewhere were blocked as well. 

It only affected telnet. these hosts were able to access ftp, http, 
mail, finger, and other protocols. We have no idea what caused it. We 
were working on figuring it out when suddenly yesterday afternoon, the 
problem vanished, and everything appears to be working again.

Quite a mystery.


#23 of 263 by mary on Fri Jan 2 23:56:20 1998:

El Nino.


#24 of 263 by orinoco on Sat Jan 3 00:28:12 1998:

Sunspots.  Global Warming.  The Potato Blight.  Mother Theresa...


#25 of 263 by otter on Sat Jan 3 10:40:35 1998:

I did it with my mind. Just a subtle reminder to you of my awesome power. 8^}


#26 of 263 by arianna on Sat Jan 3 23:40:27 1998:

*rotfl*


#27 of 263 by gibson on Mon Jan 5 05:53:25 1998:

        rotfl? I haven't figured this one out. how about a hint.


#28 of 263 by mcnally on Mon Jan 5 05:59:54 1998:

  Rolling on the floor laughing..


#29 of 263 by srw on Mon Jan 5 22:16:31 1998:

That was too big of a hint.


#30 of 263 by gibson on Tue Jan 6 00:21:03 1998:

        hold on i've almost got it. nope, it slipped by.


#31 of 263 by orinoco on Tue Jan 6 03:58:43 1998:

Would you like Cliff Notes?


#32 of 263 by cmcgee on Tue Jan 6 04:17:47 1998:

Well, Ive been trying to log in on 4931, but after it rang 10 times (60 sec),
my software decided there wasnt going to be a carrier.  It did sound like it
was searching up the ladder after every 3rd ring.  

Im now logged in on 3000.


#33 of 263 by scott on Tue Jan 6 12:10:12 1998:

Why 4931?


#34 of 263 by valerie on Tue Jan 6 18:54:17 1998:

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#35 of 263 by davel on Tue Jan 6 21:25:21 1998:

Um, Valerie, she *said* she's in on -3000.


#36 of 263 by orinoco on Tue Jan 6 21:50:09 1998:

(Is there anything special about -4931?  I know about -3000 and -5041, but
I didn't even know that number existed.)


#37 of 263 by scott on Tue Jan 6 23:57:18 1998:

It's usually been the last number in the slow group, right before the first
fast modems (no longer true, though).

I'm getting the impression that the last slow modem, ttyhc, has a modem that
is not With The Program right now.


#38 of 263 by gibson on Wed Jan 7 04:03:53 1998:

        Re #31. I wont know til I meet him.


#39 of 263 by rcurl on Wed Jan 7 06:15:25 1998:

I ftp'd a binary file I named MOU.doc to grex and it showed up as such
in my directory, but I could not access it ("file does not exist"). I
mv'd it as MOU.* to MOUf.doc, and I could access that. What/why/when was
a hidden character appended to the file name, and is there a way to
prevent this?


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