[Samba] Files over 4GB not listing properly. Cannot get CIFSworking.

Matt Boyle MBoyle at ttcdas.com
Tue May 6 15:07:55 GMT 2008

Put this in the wrong thread, sorry!

UPDATE:  I've realized that this seems to be an issue with the compiler flags used to build samba.
I've realized that i need to define _LARGEFILE_SOURCE, _LARGEFILE64_SOURCE, and _FILE_OFFSET_BITS=64.

I've done this, but still have no luck reading files larger than 4GB.  Anyone have suggestions?


> Hi guys,
> I'm attempting to move large files (>4GB) from a PowerPC-based embedded system running a 2.4 kernel architecture to an PC running a 2.6 kernel. I've got samba compiled, installed, and running on the embedded box. I also have the directories from the PPC system mounted and accessible from the PC. 
> I have two problems: larger file sizes do not list correctly, and large files transferred from the embedded box to the PC are not complete; IE they're dropping data along the way. I'm familiar with the 2GB file size limit on samba, and have mounted the PC side using the lfs flag.
> Problem 1: Incorrect listing
> Here's a list of the directory from the embedded box:
> -r--r--r-- 1 root root 52646396 Jan 5 06:46 file1.ch10
> -r--r--r-- 1 root root 60755936 Jan 5 06:46 file2.ch10
> -r--r--r-- 1 root root 47606684 Jan 5 06:46 file3.ch10
> -r--r--r-- 1 root root 4920604376 Jan 5 05:51 file4.ch10
> Here's that same listing, but of the samba mount of that directory on the PC:
> -r-xr-xr-x 1 root root 52646396 Jan 5 2007 file1.ch10 -r-xr-xr-x 1 
> root root 60755936 Jan 5 2007 file2.ch10 -r-xr-xr-x 1 root root 
> 47606684 Jan 5 2007 file3.ch10 -r-xr-xr-x 1 root root 625637080 Jan 5 
> 2007 file4.ch10
> As you can see, files 1-3 list fine, but file4 is showing way short. I'm guessing this might be some sort of overflow condition, any ideas?
> Problem 2: Loss of data during transfer of large files.
> When I try to transfer file4, i only get 41xxxxxxxx or so of the total 
> file size. This is the more pressing issue.
> Also, I cannot mount the samba share using CIFS.  I use the line
> mount -t smbfs //server/share/ path/to/local/ -o user=u,pass=p,lfs
> to mount with SMBFS, and it works correctly, just doesn't display the large files. 
> However, when using the following:
> mount -t smbfs //server/share/ path/to/local/ -o user=u,pass=p,lfs
> I get "Mount error 5= Input/output error"
> Any thoughts?
> Thanks,
> Matt

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