hang ftp connections...

hang ftp connections...

[Tigran Aivazian]

Hi guys,

I noticed this since I installed test10-pre5 (maybe 6) on my
desktop. FTP connections to Solaris became very strange, i.e. after the
transfer is finished it would never actually close the control socket and
hang it there. So, I assumed that most likely Solaris kernel is full of
bugs (as a commercial OS ought to be) and they don't even implement FTP
protocol correctly, so that the exceeding correctness of ours at
test10-preX shows their bugs. However, now the same thing happened when
talking to ftp.kernel.org and that surely runs Linux. So there must be a
bug somewhere. I will now upgrade all my systems to final proper test10
and see if the problem is still there...

I only noticed this with ftp; other critical services (irc, telnet etc.)
work fine.

Regards,
Tigran

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Re: hang ftp connections...

[Tigran Aivazian]

On Wed, 1 Nov 2000, Tigran Aivazian wrote:

> Hi guys,
> 
> I noticed this since I installed test10-pre5 (maybe 6) on my
> desktop. FTP connections to Solaris became very strange, i.e. after the
> transfer is finished it would never actually close the control socket and
> hang it there. So, I assumed that most likely Solaris kernel is full of
> bugs (as a commercial OS ought to be) and they don't even implement FTP
                                                                      ~~~

did I say FTP? I meant TCP :) Though it would be nice to see a kernel with
kFTP in it :)

> protocol correctly, so that the exceeding correctness of ours at
> test10-preX shows their bugs. However, now the same thing happened when
> talking to ftp.kernel.org and that surely runs Linux. So there must be a
> bug somewhere. I will now upgrade all my systems to final proper test10
> and see if the problem is still there...
> 
> I only noticed this with ftp; other critical services (irc, telnet etc.)
> work fine.
> 
> Regards,
> Tigran
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> Please read the FAQ at http://www.tux.org/lkml/
> 

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Re: hang ftp connections...

[Ben Ford]

[-- Attachment #1: Type: text/plain, Size: 1662 bytes --]

I have a very similar problem.  I am running test10-pre5 (x86).  I can accept
uploaded FTP all day long, but when downloading from me, my network dies in
very short order.  This was a windows box that was killing me (both ME and
2000).  These are about 100 2-4 meg files that I'm talking about.  I didn't
see any significant log entries, but there was one oddity.  There were 4
incorrect FTP login attempts recorded when I actually logged in successfully
the first time.

I bring the network down (ifconfig eth0 down), kill dhclient then bring it
back up and restart dhclient.  That seems to work, but it's a pain in the
butt.

-b


Tigran Aivazian wrote:

> Hi guys,
>
> I noticed this since I installed test10-pre5 (maybe 6) on my
> desktop. FTP connections to Solaris became very strange, i.e. after the
> transfer is finished it would never actually close the control socket and
> hang it there. So, I assumed that most likely Solaris kernel is full of
> bugs (as a commercial OS ought to be) and they don't even implement FTP
> protocol correctly, so that the exceeding correctness of ours at
> test10-preX shows their bugs. However, now the same thing happened when
> talking to ftp.kernel.org and that surely runs Linux. So there must be a
> bug somewhere. I will now upgrade all my systems to final proper test10
> and see if the problem is still there...
>
> I only noticed this with ftp; other critical services (irc, telnet etc.)
> work fine.
>
> Regards,
> Tigran
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> Please read the FAQ at http://www.tux.org/lkml/

[-- Attachment #2: ftp-fuckup --]
[-- Type: text/plain, Size: 2566 bytes --]

Oct 28 16:55:36 Deacon -- MARK --
Oct 28 17:15:36 Deacon -- MARK --
Oct 28 17:23:30 Deacon proftpd[10662]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori (Login failed): Incorrect password. 
Oct 28 17:23:30 Deacon proftpd[10662]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP session closed. 
Oct 28 17:23:32 Deacon proftpd[10663]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori (Login failed): Incorrect password. 
Oct 28 17:23:32 Deacon proftpd[10663]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP session closed. 
Oct 28 17:23:33 Deacon proftpd[10665]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori (Login failed): Incorrect password. 
Oct 28 17:23:33 Deacon proftpd[10665]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP session closed. 
Oct 28 17:23:36 Deacon proftpd[10664]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori (Login failed): Incorrect password. 
Oct 28 17:23:36 Deacon proftpd[10664]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP session closed. 
Oct 28 17:23:44 Deacon proftpd[10668]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori: Login successful. 
Oct 28 17:23:44 Deacon proftpd[10669]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - USER lori: Login successful. 
Oct 28 17:27:56 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:28:28 Deacon last message repeated 4 times
Oct 28 17:28:44 Deacon last message repeated 2 times
Oct 28 17:28:44 Deacon proftpd[10668]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP no transfer timeout, disconnected. 
Oct 28 17:28:52 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:29:24 Deacon last message repeated 4 times
Oct 28 17:30:28 Deacon last message repeated 8 times
Oct 28 17:31:32 Deacon last message repeated 8 times
Oct 28 17:32:36 Deacon last message repeated 8 times
Oct 28 17:32:44 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:32:48 Deacon proftpd[10669]: Deacon.itchyscratchy.org (192.168.0.30[192.168.0.30]) - FTP no transfer timeout, disconnected. 
Oct 28 17:32:52 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:33:16 Deacon last message repeated 3 times
Oct 28 17:33:17 Deacon su[10695]: - pts/0 ben-root 
Oct 28 17:33:22 Deacon su[10696]: + pts/0 ben-root 
Oct 28 17:33:24 Deacon kernel: NETDEV WATCHDOG: eth0: transmit timed out
Oct 28 17:33:56 Deacon last message repeated 4 times
Oct 28 17:35:00 Deacon last message repeated 8 times