rsync - Nov 2007 - Syncing to multiple servers

Helle everyone,

Let's say we have 3 servers, 2 of them have the latest (stable) version 
of rsyncd running (2.6.9)

<Server1> ==> I N T E R N E T ==> <Server2 (rsyncd running)> 
==> LAN
==> <Server3 (rsyncd running)>

Suppose I want to send a big file (bigfile.big) from Server1 to both 
Server2 and Server3. It would be a good idea to send first from Server1 
-> Server2 and then from Server2 -> Server3 to avoid sending the same 
files over the internet (Server2 & 3 are in a Lan and Server 3 is a 
replicate of server 2).

Is there a way to send first to Server2 from Server1 and after the rsync 
is finished to start syncing from Server2 to Server3 extacly the same 
files with the same options ?

I tried the post-xfer exec and pre-xfer exec options in the rsyncd.conf 
file but there is no way to get the original sync folder 
(/home/./bigfile.big in the following example).

Example:

Server1: rsync -avzR /home/./bigfile.big  Server2::home --progress --delete
.... Syncing ......
Sync done, start internal  (lan) sync: Server2:  rsync -avzR 
/home/./bigfile.big  Server3::home --progress --delete

 Thanks for your time

-- 
Charalampos Pournaris
charpour@gnet.gr

At 14:46 27.11.2007 +0200, Pournaris Charalampos wrote:
>Is there a way to send first to Server2 from Server1 and after the rsync is
finished to start syncing from Server2 to Server3 extacly the same files with
the same options ?
>
>I tried the post-xfer exec and pre-xfer exec options in the rsyncd.conf file
but there is no way to get the original sync folder (/home/./bigfile.big in the
following example).
>
>Example:
>
>Server1: rsync -avzR /home/./bigfile.big  Server2::home --progress --delete
>.... Syncing ......
>Sync done, start internal  (lan) sync: Server2:  rsync -avzR
/home/./bigfile.big  Server3::home --progress --delete
Just thinking, I haven't tried this. You can specify the binary that is
called
on the remote side if you go with SSH. Like that you could create a
script file that syncs from 2 to 3 and call that from 1 after you have finished
synching from 1 to 2. The script itself sits and runs on 2.
If 3 is a mirror of 2 you don't need exactly the same options as you used
for synching from 1 to 2, just create an exact copy (-a --delete etc).

bye   Fabi