Corrupted data on write to Windows 2003 Server

When copying a file from linux to windows, I noticed corrupted data 
whenever my data size is larger than about 100-200MB.  I ran a few 
tests, using 'dd', writing a 1GB file with varying block sizes (1, 10, 
50, 100, and 200 megs).   Each one reported a different md5 when reading 
back.  Only the 200 MB block size was successful, but it may have been a 
fluke... I need to run the test a few more times.

The actual number of bytes in the destination file is correct.  But 
running 'cmp' afterwards, I discovered that the destination ends up 
being 0 padded after a certain point.  The exact spot seems to wander, 
but it appears to be around the 800-900MB mark for these files.

I don't get any error messages or anything from the actual 'dd' command. 
 The only message I get is a kernel message saying: "CIFS VFS: No 
writable handles for inode", which I suppose explains it all.  But it'd 
be nice if the user commands reported some sort of failure.

I don't suppose there are any mount options I can give to cifs to make 
it do more checking or retries or anything?  Or how do I actually 
prevent the "no writable handles" problem?

Of course, if I use rsync, that seems to get around the problem.  But it 
seems kind dumb to have to do that for mounted filesystems. =P



Linux system: Fedora Core 5
Linux aeolus.eng.lantronix.com 2.6.18-1.2200.fc5smp #1 SMP Sat Oct 14 
17:15:35 EDT 2006 i686 i686 i386 GNU/Linux


Windows System: Windows Server 2003 R2 Standard w/ SP1

mount options:  cifs (rw,mand)

I don't think this uses samba since cifs is a kernel module, but just in 
case, my samba version is: 3.0.23c

Thanks for any assistance,
Danny

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