rsync inefficient

From: Robert John (bobsnoemail_at_hotmail.com)
Date: 03/30/05 

Date: Tue, 29 Mar 2005 20:55:18 -0800

Hi,

I am performing a regular backup from a cron job where I am copying a
compressed directory over to a shared windows machine (which I have mapped a
drive to). I only wish to copy the file if it has changed because if the
windows backup utility sees that the file has changed, it will backup the
file, and chew more tapespace (this is an issue).

I am trying to use the rsync command for this:

> rsync -vz /tmp/backup/file.tar.gz
/mnt/windowsmachine//linuxbackup/ --progress

file.tar.gz
     1912001 100% 538.65kB/s 0:00:03 (1, 100.0% of 1)

sent 1909010 bytes received 40 bytes 545442.86 bytes/sec
total size is 1912001 speedup is 1.00

I notice that the speedup is 1.0 everytime I run it, and the file is always
overwritten on the windows machine. Am I doing something wrong here?

Thanks for the help,
Bob.

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