Wireshark-users: Re: [Wireshark-users] Can't use Wireshark with a smbfs mount

From: Jeanne Clément <c.jeanne@xxxxxxxxxxxx>
Date: Wed, 7 Jul 2010 09:43:40 +0200

>On Jul 5, 2010, at 9:15 AM, Jeanne Cl?ment wrote:

> 

>> I?ve build a test platform with Linux Ubuntu and I want to capture and store pcap file directly to another server (Win7 64bits).

>> I?ve installed the smbfs 2:3.4.0-3ubuntu5.6 package and mounted the

>> share on /mnt/trace mount -t smbfs //10.35.10.223/trace /mnt/trace -o

>> workgroup=WORKGROUP,username=admin

>> Then I?m able to write a file in my share both from shell (mkdir test) and from a gnome app (gedit), but not from Wireshark. I got the message: The file ?/mnt/trace/test/pcap? could not be opened: Value to big for defined datatype.

> 

>Does this happen only with files on an SMB server?  If so, it's probably that smbfs is not properly performing the checks for files >= 2GB in size, and >rejecting non-O_LARGEFILE opens or seeks even if the file is < 2GB in size.

> 

>Can you use cifsfs instead?

 

This problem occurs only when Wireshark attempt to write on my smb mountpoint whatever the file size. With cifs, the problem is exactly the same.

/mnt/trace mount -t cifs //10.35.10.223/trace /mnt/trace -o workgroup=WORKGROUP,username=admin

 

This is not blocking to me because I’m using dumpcap, but I’ll investigate later

 

 



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