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Grex Helpers Item 144: Grex System Problems - Fall 2005
Entered by i on Fri Sep 23 02:44:47 UTC 2005:

This item is for system problems.  If something on Grex isn't working 
right (line noise on a modem, weird behavior from a program, etc.), 
this is the place to announce it.  Except for security holes.  If you 
find a hole in system security, mail information about it to "staff".

276 responses total.



#1 of 276 by naftee on Sat Sep 24 16:55:28 2005:

did GreX have to be shut down just to roll the agora cf ?


#2 of 276 by sabre on Sat Sep 24 17:41:41 2005:

This item should fill up real fast considering the ways things have 
been going here lately


#3 of 276 by rcurl on Sun Sep 25 07:00:23 2005:

I just read #2 and Grex froze and finally dropped out. I just got back on.
What was the cause and cure of this hiccup?


#4 of 276 by johnnie on Sun Sep 25 13:42:21 2005:

Via Backtalk, the current agora (autumn) jusst hangs when I try to do
anything.  All other confs work fine, as does accessing via telnet.

It was doing this before the Friday/Saturday downtime, if that matters.


#5 of 276 by remmers on Sun Sep 25 16:36:02 2005:

Re #3:  It was one of our daily-or-so kernel panics.  :(   The system
rebooted itself automatically.

Re #4:  That's the "new agora" Backtalk glitch that's been around for a
while.  A workaround that usually works is to telnet or ssh to grex and
join agora via picospan (i.e. the "bbs" command) - after that, Backtalk
works with agora too.  (I'm entering this response via Backtalk, but did
join agora via bbs yesterday, which is why I don't think I got hit by
the glitch this time.)


#6 of 276 by johnnie on Sun Sep 25 19:35:27 2005:

Yep, working just dandy now. 


#7 of 276 by naftee on Sun Sep 25 21:34:48 2005:

dandy pandy


#8 of 276 by sabre on Mon Sep 26 16:06:38 2005:

re#7
The issue isn't confined to agora..of course.
backtalk crashes in coop all the time.


#9 of 276 by remmers on Mon Sep 26 18:01:10 2005:

Hmm - not for me.  Are you getting actual crashing, or is it hanging?


#10 of 276 by sabre on Mon Sep 26 19:24:19 2005:

re# 9
It  brings up about half the items...then it displays the "BACKTALK 
HAS CRASHED" error. It hasn't happened to me today.It happened 
constantly last week. I worked around the issue by telnetting in.


#11 of 276 by jep on Fri Sep 30 17:03:57 2005:

I haven't been able to connect to Backtalk for a week, either from home or
from work.  I just decided to try telnet and it worked, much to my
surprise.  Backtalk seems to time out over about 3 minutes.


#12 of 276 by jep on Fri Sep 30 21:32:44 2005:

I am now in via Backtalk.  Thanks to whoever got it working!  Once 
you're used to Backtalk, Picospan doesn't cut it any more.


#13 of 276 by naftee on Fri Sep 30 21:36:06 2005:

unlucky !


#14 of 276 by remmers on Sat Oct 1 12:06:59 2005:

Re #12:  I don't think anybody did anything to get Backtalk working.  It
seems to have a bug that causes it to hang, for certain users under
certain circumstances at certain times - and then suddenly start working
again for those users.  I don't think the cause has been fully diagnosed.


#15 of 276 by nharmon on Sat Oct 1 14:03:43 2005:

Backtalk stops working for me if I fiddle with any of its settings. When
it happens, I gotta blow away the config. This always fixes the problem.


#16 of 276 by slynne on Sat Oct 1 14:18:16 2005:

I have had no problems at all with backtalk


#17 of 276 by remmers on Sun Oct 2 18:45:44 2005:

Backtalk has several interfaces - pistachio, bubblegum, etc.  I use
pistachio and almost never have problems.  What interfaces are other
folks using?


#18 of 276 by naftee on Sun Oct 2 22:20:41 2005:

vanilla.
it's problematic :(


#19 of 276 by jep on Mon Oct 3 02:41:01 2005:

I use pistachio.  I didn't do anything to fix Backtalk for myself, 
either.  It has resumed working for me both at work and at home, both 
at once.

It wasn't responding at all last week.  It looked to me like Grex was 
down.  I thought Grex *was* down.


#20 of 276 by davel on Sat Oct 8 20:14:37 2005:

Grex appears to have been down for almost 24 hours, though it did respond
to ping during at least some of that time.  The Grex Status page said it
was up, but it didn't respond to connections & last shows a crash/reboot.
There's nothing in the motd.


#21 of 276 by davel on Sat Oct 8 20:15:52 2005:

Er, that's not connected with jep's response.  This was yesterday afternoon
through this afternoon.


#22 of 276 by tod on Mon Oct 10 16:39:36 2005:

24 hours eh


#23 of 276 by naftee on Mon Oct 10 17:03:52 2005:

hi tod !


#24 of 276 by tod on Mon Oct 10 17:09:48 2005:

"Yo Jim, those are some BAD threads!" -Pimp in Superman the Movie


#25 of 276 by jep on Mon Oct 10 18:55:24 2005:

This is the first time I've been able to log in since Sunday Oct 2.  
What's the story?


#26 of 276 by tod on Mon Oct 10 19:16:05 2005:

You get what you pay for


#27 of 276 by nharmon on Mon Oct 10 19:35:07 2005:

Then how do you explain m-net's uptime?


#28 of 276 by edina on Mon Oct 10 19:37:57 2005:

Pure spite?


#29 of 276 by nharmon on Mon Oct 10 19:44:26 2005:

Pure Sprite?


#30 of 276 by tod on Mon Oct 10 19:46:31 2005:

re #27
quantity vs. quality


#31 of 276 by rksjr on Tue Oct 11 16:27:24 2005:

On Saturday, Oct. 8, during the short interval between Grex outages, I 
discovered three rather large items in my email inbox (97K, 96K, and 97K). 
They were delivery failure notifications (DFNs) which seemed to indicate 
that mail, which I never sent, was sent with my return address in the 
headers. 

Those three items bounced, causing me to receive a DFN for each. If the 
original emails were spam, then the DFNs might have been the tip of the 
ice berg compared to the number of emails which may have actually been 
delivered to viable addresses. 

The following is the header of the first of the three DFNs:

    Date: Fri, 7 Oct 2005 09:51:04 +0530
    From: Mail Delivery System <postmaster@apnpdcl.co.in>
    To: rksjr@cyberspace.org
    Subject: Delivery failure notification

The following is supposedly the header of the original email which was 
included in the same (first) DFN:

    Date: Fri, 7 Oct 2005 10:00:25 +0530
    From: rksjr@cyberspace.org
    To: drbrain@ziemlich.org
    Subject: STATUS

I saved the full headers of all three DFNs.

I am wondering if anyone else might have received similar missives.


#32 of 276 by rksjr on Tue Oct 11 22:59:47 2005:

Re. #31: The first and third DFNs were from the same postmaster:

     From: Mail Delivery System <postmaster@apnpdcl.co.in>

     From: postmaster@manage.cyberoam

     From: Mail Delivery System <postmaster@apnpdcl.co.in>

The following line was from the full header of the second DFN:

     Received: from spooler by apnpdcl.co.in 

Thus indicating that all three DFNs were associated with the same 
"apnpdcl.co.in".

The three addressees of the original emails referred to in the DFNs were 
different:

     To: drbrain@ziemlich.org

     <munishwar.bajwa@pec.ac.in>:

     To: matt@oreilly.com

Has anyone else received similar notifications?



#33 of 276 by gelinas on Wed Oct 12 01:23:23 2005:

Hard to say.  There are a lot of viruses, etc, out there that generate mail
from more-or-less random addresses.  I think it likely that the rejection
notices you received are caused by such malware.


#34 of 276 by naftee on Sat Oct 15 01:50:50 2005:

/dev/sd0j    13.5G  12.8G  -2.8M   100%    /log

Lots of annoying messages !


#35 of 276 by bhoward on Sat Oct 15 02:54:07 2005:

I've just removed some things from /log which bought back
a little space while I look further into it.


#36 of 276 by naftee on Sat Oct 15 02:55:00 2005:

ThANKS


#37 of 276 by davel on Sun Oct 16 18:04:12 2005:

Filesystem  512-blocks     Used    Avail Capacity  Mounted on
/dev/sd0j     28261752 26944216   -95548   100%    /log

/log: write failed, file system is full


#38 of 276 by davel on Sun Oct 16 18:04:44 2005:

(Every response I read with fronttalk is giving me the write-failed message.)


#39 of 276 by rcurl on Sun Oct 16 19:12:18 2005:

Same with bbs.


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