[Samba] Reliability issues when using Windows 7

Hello,
at our company we are using Samba 4.3.2 in conjunction with Windows 7.
We use the Windows 7 machines for our nightly compiles. However,
occasionally the schedules compiles stop with a Windows network error
message, such as:

..
..
..
[ 16%] Generating ui/moc_versiondialog.cxx
[ 16%] NMAKE : fatal error U1077:
'R:\usr\20091022\121890\release\win\bin\cmake.exe' : return code
'0xc00000c3'
Stop.


This error code (STATUS_INVALID_NETWORK_RESPONSE) tells me that
something appears to be wrong with the communication of the Windows 7
machine from/to the Samba server.


Interestingly, this error only occurs if multiple compile jobs are being
executed on a single machine. If only one compile job is allowed,
everything works just fine. However, using Quad-Cores for a single
compile job is not what we really want.


Our compile jobs have the following structure:

1. Mount the samba share via net use <drive>: \\server\share
2. Execute compile
3. Unmount the sma share via net use <drive>: /DELETE

(Note that removing 3. does not resolve this issue).


Before migrating to Windows 7 we have been using Windows XP in our
compile farm, not having these problems. Unfortunately, the migration to
Win 7 was necessary to have 64bit compiles.


Does anyone know what to do here? How to find the real issue for this
problem?


Many thanks in advance.


Kind regards,
Gernot Gebhard

--
Dipl.-Inform. Gernot Gebhard
AbsInt Angewandte Informatik GmbH
Science Park 1
66123 Saarbrücken
GERMANY

Mail: gernot.gebhard.TakeThisOut@absint.com
Tel: +49-681-3836036
Fax: +49-681-3836020
WWW: http://absint.com
--
Geschäftsführung: Dr.-Ing. Christian Ferdinand
Eingetragen im Handelsregister des Amtsgerichts Saarbrücken, HRB 11234

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Hello,

Volker Lendecke wrote:
> On Thu, Oct 22, 2009 at 01:28:29PM +0200, Gernot Gebhard wrote:
>> at our company we are using Samba 4.3.2 in conjunction with Windows 7.
>> We use the Windows 7 machines for our nightly compiles. However,
>> occasionally the schedules compiles stop with a Windows network error
>> message, such as:
>>
>> .
>> .
>> .
>> [ 16%] Generating ui/moc_versiondialog.cxx
>> [ 16%] NMAKE : fatal error U1077:
>> 'R:\usr\20091022\121890\release\win\bin\cmake.exe' : return code
>> '0xc00000c3'
>> Stop.
>
> Can you do a network trace of such a failure? Information on
> how to create useful network traces can be found under
>
> http://wiki.samba.org/index.php/Capture_Packets

unfortunately this appears to be infeasible in our environment. We also
tried to search the samba log files (log level 3) for any clues, yet
without luck.


To give you some insight in our setting: We have 9 Windows 7 clients,
each with 4 compile slots, accessing our file server via Samba.
Additionally, the file server exports the Samba share via NFS to our
Linux compile cluster.


The described error occurs rather rarely in comparison with the number
of compiles we schedule. If all 9 machines are compiling some package in
parallel then maybe on of them fails. But not all the time.
Additionally, it is really hard to predict which machine will fail. Thus
capturing such a trace will produce a lot of data, such that I really
doubt we will be able to find the reason.


Currently, we are trying to only compile on a single machine. If this
triggers the error, we can then try to produce a packet trace.


However, is there any other possibility?


Kind regards,
Gernot

--
Dipl.-Inform. Gernot Gebhard
AbsInt Angewandte Informatik GmbH
Science Park 1
66123 Saarbrücken
GERMANY

Mail: gernot.gebhard DeleteThis @absint.com
Tel: +49-681-3836036
Fax: +49-681-3836020
WWW: http://absint.com
--
Geschäftsführung: Dr.-Ing. Christian Ferdinand
Eingetragen im Handelsregister des Amtsgerichts Saarbrücken, HRB 11234
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To unsubscribe from this list go to the following URL and read the
instructions: https://lists.samba.org/mailman/options/samba