rsync - Aug 2004 - Question about --stats

Is there a way to get rsync to estimate the net change of disk space usage
for a transfer?  I can get the gross amount of files to be transferred using
"--stats", and if I use "-v" I can see a list of files to be
deleted.  But
then I'd have to mangle the filenames to the target path (prepend some text
to each line) and do a "du -c | tail -1" to get the disk usage of that
list,
then subtract the number to the "Total transferred file size" line
from
"--stats".  Not a huge hassle, but some hassle.

If it's easy, maybe this would be a good addition to rsync --stats.  List
the size of the files deleted, and perhaps the net change in disk usage.

I'm interested in this because I rsync data to a raid set for off-site
storage, but I'm running out of space.  I have some data that I want to be
sure is on the raid set, and other data that I care less about and could
delete some of to make sure the important data is transferred.  I do this
weekly to a 800Gb raid set, so wiping all the low-priority data,
transferring the high-priority data and then rsyncing as much of
low-priority data as will fit is not an option -- it would take too long.

Thanks!

Bart
---
Bart Brashers, Ph.D.
MFG Inc.
19203 36th Ave W Ste 101
Lynnwood WA 98036
425.921.4000 voice
425.921.4040 fax
bart.brashers@mfgenv.com

On Mon, Aug 02, 2004 at 11:01:39AM -0600, Brashers, Bart -- MFG, Inc.
wrote:
> If it's easy, maybe this would be a good addition to rsync --stats. 
List
> the size of the files deleted, and perhaps the net change in disk usage.
Yes, an addition like that sounds like a good idea to me.  It will
require a protocol bump because of the weird way the stat data moves
around to the process that actually does the output (and the current
stats are all known to the sender but this stat would only be known to
the receiver).  So, a good idea, but it will be a little harder to do
than it might appear at first glance.  I'll consider it.

..wayne..