samba - May 2015 - STATUS_SHARE_VIOLATION when Read while Write on GPFS + CTDB

Hi,
 
in the following scenario I've got the Problem of
"STATUS_SHARE_VIOLATION".
 
Client A (with User 1)  copies a file to share X. (with: DENY_NONE  0x120196   
WRONLY     NONE)
Client B (with User 1) reads this file from share X (with: DENY_NONE  0x120089  
RDONLY	 NONE)
 
Now Client C (with User 1) wants also to read this file from share X and gets
the STATUS_SHARE_VIOLATION.
In the same scenario with Client D (and User 2) instead of Client A everything
seems to work brilliantly.
 
 
Clients A to C are Windows Server 2008 R2 - Client D is a RHEL6.X.
 
The Samba-Server is a CTDB with 2 nodes. 
Samba version 4.1.11-SerNet-RedHat-8.el6 (will be updated to 4.1.17 tomorrow)
CTDB version: 1.0.114.8-1 (will be updated to 1.0.114.9-1 tomorrow)
The FIle-System the Share is on is GPFS in Version 3.5.0.23

The relevant File-System parmateres are -D and -k = nfs4.

Other GPFS-Samba-Parameters as

cifsBypassShareLocksOnRename
syncSambaMetadataOps
cifsBypassTraversalChecking
allowSambaCaseInsensitiveLookup

aren't set.
 
 
 
smb.conf: http://pastebin.com/B5RCAGfv

share definition for share x:  http://pastebin.com/YNtCR9Wb


I tried to get log files with this error, but currently the persons I need to
reproduce this error aren't available so I will deliver log files, if
necessary, later on.
Older log files aren't available because of their small size and much
activity.


Is there any parameter / option / switch to solve this problem? Or is it just
the way the Client C tires to achieve the lock on this file?

Thanks and best regards from Cologne,
Alex

Hello!

We indeed need debug level 10 logs of smbd. But I bet that you're running
into an incompatibility between SMB and GPFS share modes. Those don't
match 100%, so turning off gpfs:sharemodes might be worth a try. Of
course, this means that you lose interop share modes.

I'd be happy to analyze this further and assist you in making a proper
GPFS query out of this if needed.

With best regards,

Volker Lendecke

On Thu, May 21, 2015 at 03:40:58PM +0200, Alexander Gast
wrote:
> Hi,
>  
> in the following scenario I've got the Problem of
"STATUS_SHARE_VIOLATION".
>  
> Client A (with User 1)  copies a file to share X. (with: DENY_NONE 
0x120196    WRONLY     NONE)
> Client B (with User 1) reads this file from share X (with: DENY_NONE 
0x120089    RDONLY	 NONE)
>  
> Now Client C (with User 1) wants also to read this file from share X and
gets the STATUS_SHARE_VIOLATION.
> In the same scenario with Client D (and User 2) instead of Client A
everything seems to work brilliantly.
>  
>  
> Clients A to C are Windows Server 2008 R2 - Client D is a RHEL6.X.
>  
> The Samba-Server is a CTDB with 2 nodes. 
> Samba version 4.1.11-SerNet-RedHat-8.el6 (will be updated to 4.1.17
tomorrow)
> CTDB version: 1.0.114.8-1 (will be updated to 1.0.114.9-1 tomorrow)
> The FIle-System the Share is on is GPFS in Version 3.5.0.23
> 
> The relevant File-System parmateres are -D and -k = nfs4.
> 
> Other GPFS-Samba-Parameters as
> 
> cifsBypassShareLocksOnRename
> syncSambaMetadataOps
> cifsBypassTraversalChecking
> allowSambaCaseInsensitiveLookup
> 
> aren't set.
>  
>  
>  
> smb.conf: http://pastebin.com/B5RCAGfv
> 
> share definition for share x:  http://pastebin.com/YNtCR9Wb
> 
> 
> I tried to get log files with this error, but currently the persons I need
to reproduce this error aren't available so I will deliver log files, if
necessary, later on.
> Older log files aren't available because of their small size and much
activity.
> 
> 
> Is there any parameter / option / switch to solve this problem? Or is it
just the way the Client C tires to achieve the lock on this file?
> 
> Thanks and best regards from Cologne,
> Alex
> 
> -- 
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
-- 
SerNet GmbH, Bahnhofsallee 1b, 37081 G?ttingen
phone: +49-551-370000-0, fax: +49-551-370000-9
AG G?ttingen, HRB 2816, GF: Dr. Johannes Loxen
http://www.sernet.de, mailto:kontakt at sernet.de

Hello Volker,

I was able to get those level 10 logs - spitted by machine. 
Unfortunately I don't know how attachments behave - Groupwise seems not to
be happy with those - so I try the redundant way:

Here are the logfiles for this event (only one machine, one try):
https://www.bitmammut.de/WDR/log.klnmszap32

In this file there are about 3 occurrences of the
"NT_STATUS_SHARING_VIOLATION".
The first is in line 2661.

Also I'll try to set the share-modes to "no" and look how it
behaves.

Thanks that you want to analyze this. I hope that we would find a solution.

Regards from Cologne,
Alex




Westdeutscher Rundfunk
IT-Services
Rechenzentrum
An der Rechtschule 4
Archivhaus 1145
50667 K?ln
Telefon +49 (0)221 220 6496

alexander.gast at wdr.de
www.wdr.de


 


Bitte denken Sie an die Umwelt, bevor Sie diese E-Mail drucken.
>>> 
Von: Volker Lendecke <Volker.Lendecke at SerNet.DE>
An:Alexander Gast <Alexander.Gast at WDR.DE>
CC:<samba at lists.samba.org>
Datum: 04.06.2015 08:47
Betreff: Re: [Samba] STATUS_SHARE_VIOLATION when Read while Write on GPFS + CTDB
Hello!

We indeed need debug level 10 logs of smbd. But I bet that you're running
into an incompatibility between SMB and GPFS share modes. Those don't
match 100%, so turning off gpfs:sharemodes might be worth a try. Of
course, this means that you lose interop share modes.

I'd be happy to analyze this further and assist you in making a proper
GPFS query out of this if needed.

With best regards,

Volker Lendecke

On Thu, May 21, 2015 at 03:40:58PM +0200, Alexander Gast
wrote:
> Hi,
>  
> in the following scenario I've got the Problem of
"STATUS_SHARE_VIOLATION".
>  
> Client A (with User 1)  copies a file to share X. (with: DENY_NONE 
0x120196    WRONLY     NONE)
> Client B (with User 1) reads this file from share X (with: DENY_NONE 
0x120089    RDONLY     NONE)
>  
> Now Client C (with User 1) wants also to read this file from share X and
gets the STATUS_SHARE_VIOLATION.
> In the same scenario with Client D (and User 2) instead of Client A
everything seems to work brilliantly.
>  
>  
> Clients A to C are Windows Server 2008 R2 - Client D is a RHEL6.X.
>  
> The Samba-Server is a CTDB with 2 nodes. 
> Samba version 4.1.11-SerNet-RedHat-8.el6 (will be updated to 4.1.17
tomorrow)
> CTDB version: 1.0.114.8-1 (will be updated to 1.0.114.9-1 tomorrow)
> The FIle-System the Share is on is GPFS in Version 3.5.0.23
> 
> The relevant File-System parmateres are -D and -k = nfs4.
> 
> Other GPFS-Samba-Parameters as
> 
> cifsBypassShareLocksOnRename
> syncSambaMetadataOps
> cifsBypassTraversalChecking
> allowSambaCaseInsensitiveLookup
> 
> aren't set.
>  
>  
>  
> smb.conf: http://pastebin.com/B5RCAGfv
> 
> share definition for share x:  http://pastebin.com/YNtCR9Wb
> 
> 
> I tried to get log files with this error, but currently the persons I need
to reproduce this error aren't available so I will deliver log files, if
necessary, later on.
> Older log files aren't available because of their small size and much
activity.
> 
> 
> Is there any parameter / option / switch to solve this problem? Or is it
just the way the Client C tires to achieve the lock on this file?
> 
> Thanks and best regards from Cologne,
> Alex
> 
> -- 
> To unsubscribe from this list go to the following URL and read the
> instructions:  https://lists.samba.org/mailman/options/samba
-- 
SerNet GmbH, Bahnhofsallee 1b, 37081 G?ttingen
phone: +49-551-370000-0, fax: +49-551-370000-9
AG G?ttingen, HRB 2816, GF: Dr. Johannes Loxen
http://www.sernet.de, mailto:kontakt at sernet.de
-- 
To unsubscribe from this list go to the following URL and read the
instructions:  https://lists.samba.org/mailman/options/samba