Re: CIFS Issue When Copying Large/Many Files From CentOS To Remote Windows 2003 Server Share

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Les,

Brilliant. Yes, the Windows 2003 Server contains;

Symantec Antivirus
Version: 10.1.5.5000 
Scan Engine: 81.3.0.13
Realtime Protection: Enabled
Exclusions: None

Should I exclude the drive (S:\) on the Windows box in the AV; have you ran into this and did doing this solve it for you? 

Thanks,

LK

-----Original Message-----
From: centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Les Mikesell
Sent: Thursday, June 18, 2009 9:46 AM
To: CentOS mailing list
Subject: Re:  CIFS Issue When Copying Large/Many Files From CentOS To Remote Windows 2003 Server Share

Kemp, Larry wrote:
> My first post to the list, hope the community can help me, I am having a 
> problem with CIFS:VFS.
> 
>  
> 
> I am trying to write large files (and a lot of files) from my Cent OS 
> 5.3 server to a remote Windows 2003 Server share. It appears there might 
> be some incompatibilities between how the two OS's individually 
> implement CIFS, maybe.
> 
>  
> 
> I automount the remote share via /etc/fstab and have the 
> /mnt/remotewinservershare built. Everything is setup and seems to work 
> properly but during the large file transfer (at intermittent times) the 
> Linux Kernel seems to panic and the CIFS connection seems to fail as a 
> result since CIFS happens at the Kernel level, returning errors. 
> Although when I cd the /mnt/remotewinservershare dir, or ls /mnt the 
> mount is there is I can manually cp to it with absolutely no problems.
> 
>  
> 
> My /etc/fstab line is:
> 
> //10.100.101.205/share  /mnt/remotewinservershare   cifs    
> username=MYUSER,pass=MYPASSWD 0 0
> 
>  
> 
> The CIFS errors returned are:
> 
> WARNING:  Kernel Errors Present
> 
>      CIFS VFS: Error -4 sending data  ...:  103 Time(s)
> 
>      CIFS VFS: Unexpected lookup error -112 ...:  2 Time(s)
> 
>      CIFS VFS: Error -4 sending data  ...:  380 Time(s)
> 
>  
> 
> I have seen in various online forums people have run into this since 
> 2004 and posts in 2007 have gone unanswered. Seems to be isolated to 
> Cent OS trying to CIFS to a Windows 2003 Server when transferring large 
> or many files (and does so intermittently).
> 
>  
> 
> Has anyone has hit this before and been able to fix this please share 
> how you worked around it or fixed it. It is important for me to be able 
> to have a stable CIFS connection to this remote Windows Server 2003 
> server, and we know we are not getting a look at the Windows kernel.
> 

Is there a virus scanner on the windows box?  It might be taking too long to 
scan the large file you are trying to write and causing the timeout.

-- 
   Les Mikesell
    lesmikesell@xxxxxxxxx
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