Subject: Hanging FTPs

From: Michael Brennen <[email-masked]>
Date: Fri, 7 Jun 1996 13:52:38 -0500 (CDT)

I've had much trouble with beta 10 and 11 resulting in hung FTP sessions; 
they get stuck in some state and just hang forever.  I had no problem with
beta 8, but since then things have gone downhill for me.  I remember that
there was a timeout patch missing from an earlier beta; did that ever make
it into the source tree? 

I'm running Linux 1.3.71 plus a few later patches; this release has been
extremely stable for me in all other respects. 

Any insight on what is going on would be appreciated.  I've run this thing
over a year without this kind of problem.  If necessary I'll debug the 
thing, but it seemed worth asking the list first.  Thanks,

   -- Michael

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From: "Homer W. Smith" <[email-masked]>
Date: Fri, 7 Jun 1996 15:48:09 -0400 (EDT)

My own system sunning SunOS 4.1.4 Sparc 20 leaves hanging
ftp's all day long.  They hang any time a process fails or even
is canceled by the user.  We have lots of ftp uploads going on,
many of which fail for various reasons not related to ftp (I don't
think), and all of these get left as hung processes.  I have been
letting this continue, because it helps me see who is having
hung processes, but just today I had to increase the limit to
100 from 20 because you get some new customer who just persists
until hes in tears about it trying to get something uploaded,
and it fills the queue, and then no one can get on.
 
    Homer

------------------------------------------------------------------------------
Homer Wilson Smith     News, Web, Telnet      Art Matrix - Lightlink
(607) 277-0959         SunOS 4.1.4 Sparc 20   Internet Access, Ithaca NY
[email-masked]    [email-masked]     http://www.lightlink.com

---

From: Jos Vos <[email-masked]>
Date: Sat, 8 Jun 1996 00:19:13 +0200 (MET DST)

> thing, but it seemed worth asking the list first.  Thanks,

We're using Linux 1.3.76 with BETA9 (if I remember correctly) on one system.

There we made a patch, resembling (but not equal to) an old Debian patch.
Without this patch, processes could hang forever, together using all
the CPU time they could get.

Now, some processes still seem to hang forever, but they aren't eating
CPU time anymore.

If anyone is interested, I can send the patch to this list (maybe I
already did in the past, which I don't remember anymore).

So, I'm also interested in the one-and-only patch that makes WU-FTPD
run correctly on Linux.

-- 
--    Jos Vos <[email-masked]>
--    X/OS Experts in Open Systems BV   |   Phone: +31 20 6938364
--    Amsterdam, The Netherlands        |     Fax: +31 20 6948204

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From: Andy Ellsworth <[email-masked]>
Date: Wed, 12 Jun 1996 06:34:19 -0500 (CDT)

> Now, some processes still seem to hang forever, but they aren't eating

But wouldn't they still be using up memory/swap space?  (unless, of 
course, they were defunct...)  That's the main problem we have here at 
wuarchive (even with beta 11), is our swap space getting eaten up (not to 
mention tying up usable slots out of the 200 limit...)

+----------------------------------------------------------------------------+
| Andy Ellsworth  |  [email-masked] |  Admin/Cyberdiplomat, Wuarchive    |
+----------------------------------------------------------------------------+
|  "...The wind was not the beginning.  There are neither beginnings nor     |
| endings to the turning of the Wheel of Time.  But it was _a_ beginning..." |
|                                   --The Wheel of Time saga, Robert Jordan  |
+----------------------------------------------------------------------------+

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From: Rodrigo Donoso <[email-masked]>
Date: Wed, 12 Jun 1996 15:40:05 -0400

Freinds

recently..i get the ftp://ftp.fni.com/wu-ftpd/guest-howto
where Michael Brennen give suppport to configurate the ftpd

Buuuuuuuuuuutttt..... the file say '/etc/ftponly'
and i hasnot that file

can someone send me it?

Buuuuuuuuuuuutttt......the file say 'configurate ftpaccess'
but i dont know the sintaxis...

can someone help me to doit?

Greetigns

Rodrigo

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From: Michael Brennen <[email-masked]>
Date: Wed, 12 Jun 1996 16:01:59 -0500 (CDT)

> Buuuuuuuuuuutttt..... the file say '/etc/ftponly'

/etc/ftponly *should not exist*!  That is the whole point, and it is 
explained in the guest howto.  Put that entry in /etc/shells, but do not 
create the file.  That way it cannot be used in any way to log in.

   -- Michael

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From: Rodrigo Donoso <[email-masked]>
Date: Wed, 12 Jun 1996 17:24:17 -0400

> create the file.  That way it cannot be used in any way to log in.

...Michael...and whats about the configuration of the ftpaccess

i think that i has ftpd from SUN...but i gonna change to wu ftpd, 
its possible setup the ftpd like wuftpd?

thanks again

RdoRigo