[Samba] STATUS_SHARE_VIOLATION when Read while Write on GPFS + CTDB

[Volker Lendecke]

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
> 
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