rsync *Still* Copying All Files?

[Mack, Daemian]

Hi, all.  This is my first post to the list, so please forgive me if this is
an old issue.  I scoured the mailing list archives by hand and could find no
mention of it, and the official FAQ-o-matic mentions it, but doesn't offer a
fix that works for me.

I've set up an rsync daemon on Windows NT4 by installing the latest cygwin.
Using the cygwin1.dll and rsync.exe, I'm able to connect successfully from
other NT4 and Windows 2000 machines.  I can get the rsync server to let me
pull files over the net to my local data to synchronize.

However, I've noticed that on the clients, *all* files are being copied
over.  Here's the command line I'm issuing:

C:\temp>rsync --verbose  --progress --stats --compress --recursive --times
10.8.1.57::nmap /cygdrive/c/temp/nmap

I'm using a source distribution of nmap just to test with.  When I started
noticing this error, I placed a 37MB file inside the rsyncable nmap area to
emphasize the amount of time spent syncing.  The progress switch allows me
to watch a realtime progress counter as the files are processed.  It takes
several minutes for that 37MB file to come over, and the stats at the end
hold up the theory that ~40MB of data has been transferred.  While
troubleshooting, I added the times switch to see if preserving timestamps on
the files would solve anything; it didn't.

I've made sure both client and server are set to the same time.  The only
thing I've noticed that could be a possible clue is that the files are
different *sizes* on each disk (because of NTFS cluster size hijinks, etc.),
so, just to be paranoid, I tried using checksum to find file diffs.  Again,
no dice.  No matter what I try, rsyncing causes all files to be copied over
the wire onto the local box.

I can't figure this out.  I don't know if rsync-for-cygwin's algorithm for
determining file differences is lacking somehow, or if something about this
data is tricking rsync into thinking changes have occurred, or if I'm just
doing something dumb.  

Any ideas?


Daemian Mack