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Chris Roubekas

2004-Sep-24 07:23 UTC

[Samba] Arrggg Samba is not behaving

Dear all,

    A while ago I posted a message regading the way Samba is behaving
and some problems that I was facing with Windows "loosing"
the connection with the server...
Here is another sample of what my /var/log/messages still looks like:

Sep 19 15:08:01 Srv smbd-classic[3499]: [2004/09/19 15:08:01, 0]
lib/util_sock.c:read_data(436)
Sep 19 15:08:01 Srv smbd-classic[3499]:   read_data: read failure for 4. Error =
Connection reset by peer

Whenever Windows Clients report a "Network or Hard Disk failure" I get
this
message in the logs and the only thing that I can do is reboot the Windows
client. This is a very big problem for me as the Windows machine that matters
the most plays MP3's from the server on a 24 hour basis and its interuption
means big problem from my boss....

I have tried everything. From reinstalling my Linux box from scratch,
reinstalling
Windows2000 from scratch (SP2) changing network cards, checking the wiring of
my network, checking intensity of the network cables (yes even brought a
technician
to assist me with that because I had no idea how to check that), connected
Srv with Win2000 via a cross-over cable (just in case the switcher was
malfunctioning)
and tons of other scenarios. Nothing! Zilch!

Unfortunately I am faced with a very serious problem since this occurs
every week (sometimes more than 3 times a day!!!).

Looked in google for this. Another person who had the same problem
had a solution published with op_locks etc, tried that...nothing!

Can someone give me a good idea??

Thank you tons!
Chris

PS: Samba is running on SuSE Linux 9.1 Samba 3.0.2a-51

Johannes-Ulrich Menzebach

2004-Sep-24 07:38 UTC

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[BULK] - [Samba] Arrggg Samba is not behaving

Chris,

I suppose what you are experiencing is a timeout problem. We had that
with a loaded samba server and a bunch of w2k clients hitting the server at the
same time. CPU load spiked and single smbds stuck in a request for (not sure
if I remember the value correctly) some minutes.
These smbds where in D state, presumeably in a system call to disk related
stuff.
During that time interactive behaviour while logged on to the server was very
sluggish also esp when touching something disk related.

In the end upgradig to a faster machine (SMP) and better disks helped. We get
that error extremely seldom now.

Also I could imagine that trying the 2.6 kernel might help.
Actually anything that keeps processes doing disk I/O from those long times
in D state. Linux kernel mailing list ?

	Uli


On Freitag, 24. September 2004 09:23 Chris Roubekas wrote:
 >Dear all,
 >
 >    A while ago I posted a message regading the way Samba is behaving
 >and some problems that I was facing with Windows "loosing"
 >the connection with the server...
 >Here is another sample of what my /var/log/messages still looks like:
 >
 >Sep 19 15:08:01 Srv smbd-classic[3499]: [2004/09/19 15:08:01, 0]
lib/util_sock.c:read_data(436)
 >Sep 19 15:08:01 Srv smbd-classic[3499]:   read_data: read failure for 4.
Error = Connection reset by peer
 >
 >Whenever Windows Clients report a "Network or Hard Disk failure"
I get this
 >message in the logs and the only thing that I can do is reboot the Windows
 >client. This is a very big problem for me as the Windows machine that
matters
 >the most plays MP3's from the server on a 24 hour basis and its
interuption
 >means big problem from my boss....
 >
 >I have tried everything. From reinstalling my Linux box from scratch,
reinstalling
 >Windows2000 from scratch (SP2) changing network cards, checking the wiring
of
 >my network, checking intensity of the network cables (yes even brought a
technician
 >to assist me with that because I had no idea how to check that), connected
 >Srv with Win2000 via a cross-over cable (just in case the switcher was
malfunctioning)
 >and tons of other scenarios. Nothing! Zilch!
 >
 >Unfortunately I am faced with a very serious problem since this occurs
 >every week (sometimes more than 3 times a day!!!).
 >
 >Looked in google for this. Another person who had the same problem
 >had a solution published with op_locks etc, tried that...nothing!
 >
 >Can someone give me a good idea??
 >
 >Thank you tons!
 >Chris
 >
 >PS: Samba is running on SuSE Linux 9.1 Samba 3.0.2a-51

-- 
+----------------------------------------------------------------------+
|     Dr. Johannes-Ulrich Menzebach              menze@vitesse.com     |
|                   Vitesse Semiconductor GmbH & Co KG                 |
|     D-47057 Duisburg Pappenstr. 36     Tel. +49/203/306-1765         |
|     D-44149 Dortmund Borussiastr. 112  Tel. +49/231/6560-186         |
| Key fingerprint = A36C 9660 6A1C 91E6 051E  DF1A 573A 770B DD66 9D9F |
+----------------------------------------------------------------------+

Jeremy Allison

2004-Sep-24 17:30 UTC

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[Samba] Arrggg Samba is not behaving

On Fri, Sep 24, 2004 at 10:23:11AM +0300, Chris Roubekas
wrote:> 
>     A while ago I posted a message regading the way Samba is behaving
> and some problems that I was facing with Windows "loosing"
> the connection with the server...
> Here is another sample of what my /var/log/messages still looks like:
> 
> Sep 19 15:08:01 Srv smbd-classic[3499]: [2004/09/19 15:08:01, 0]
lib/util_sock.c:read_data(436)
> Sep 19 15:08:01 Srv smbd-classic[3499]:   read_data: read failure for 4.
Error = Connection reset by peer
This is simply the client disconecting from the server. We
have no idea who.
> I have tried everything. From reinstalling my Linux box from scratch,
reinstalling
> Windows2000 from scratch (SP2) changing network cards, checking the wiring
of
> my network, checking intensity of the network cables (yes even brought a
technician
> to assist me with that because I had no idea how to check that), connected
> Srv with Win2000 via a cross-over cable (just in case the switcher was
malfunctioning)
> and tons of other scenarios. Nothing! Zilch!
> 
> Unfortunately I am faced with a very serious problem since this occurs
> every week (sometimes more than 3 times a day!!!).
You need to run a sniffer on the wire to see what is happening
to the tcp connection. The client is dropping it. Samba doesn't
know why. I'd look at your hubs/switches if I were you.

Jeremy.

Jeroen Verstegen

2004-Sep-25 07:10 UTC

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[Samba] Arrggg Samba is not behaving

I have exactly the same problem. And tried more or less the same solutions
I tried passing the shared folders through nfs on anonther samba server to
the windows clients also.

I reckon it is a faulty hard disk problem, but the fsck reports nothing. I
tried reiser and e3, but the problem persists.
Indeed, it does not happen on a regular basis, only about once every
three/four days and than sometimes 3 times a day.
So maybe it is a time-out problem?
How could I fix that?

I have two servers one Samba PDC and one NFS fileserver. PDC gets files from
NFSserver through imported nfs
Windows machines get to the files on NFSserv through Samba on PDC
Would it be better to install samba on NFS server as well, as a BDC? Maybe
it would take the load of samba server?

If someone knows a solution I'd very much like to hear it as well,

thanks

jeroen
jeroen@jota.nl



-----Original Message-----
From: samba-bounces+jeroen=jota.nl@lists.samba.org
[mailto:samba-bounces+jeroen=jota.nl@lists.samba.org]On Behalf Of Chris
Roubekas
Sent: vrijdag 24 september 2004 9:23
To: samba@lists.samba.org
Subject: [Samba] Arrggg Samba is not behaving


Dear all,

    A while ago I posted a message regading the way Samba is behaving
and some problems that I was facing with Windows "loosing"
the connection with the server...
Here is another sample of what my /var/log/messages still looks like:

Sep 19 15:08:01 Srv smbd-classic[3499]: [2004/09/19 15:08:01, 0]
lib/util_sock.c:read_data(436)
Sep 19 15:08:01 Srv smbd-classic[3499]:   read_data: read failure for 4.
Error = Connection reset by peer

Whenever Windows Clients report a "Network or Hard Disk failure" I get
this
message in the logs and the only thing that I can do is reboot the Windows
client. This is a very big problem for me as the Windows machine that
matters
the most plays MP3's from the server on a 24 hour basis and its interuption
means big problem from my boss....

I have tried everything. From reinstalling my Linux box from scratch,
reinstalling
Windows2000 from scratch (SP2) changing network cards, checking the wiring
of
my network, checking intensity of the network cables (yes even brought a
technician
to assist me with that because I had no idea how to check that), connected
Srv with Win2000 via a cross-over cable (just in case the switcher was
malfunctioning)
and tons of other scenarios. Nothing! Zilch!

Unfortunately I am faced with a very serious problem since this occurs
every week (sometimes more than 3 times a day!!!).

Looked in google for this. Another person who had the same problem
had a solution published with op_locks etc, tried that...nothing!

Can someone give me a good idea??

Thank you tons!
Chris

PS: Samba is running on SuSE Linux 9.1 Samba 3.0.2a-51
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