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using xfsdump to synchronise filesystems?

To: Linux XFS Mailing List <linux-xfs@xxxxxxxxxxx>
Subject: using xfsdump to synchronise filesystems?
From: Matthijs van der Klip <matthijs.van.der.klip@xxxxxx>
Date: Wed, 5 Dec 2001 15:03:16 +0100
Sender: owner-linux-xfs@xxxxxxxxxxx
Hi,

I know this is a bit of a crazy idea, but I'd like to know if something
like this is (remotely) possible...

1) Take a server with a 10Gb (max) volume. This volume is live: files are
   being added/deleted through ftp (Read/Write).

2) Take x clients which need to receive a synchronised copy of the
   mentioned volume above. Contents have to be served out through http
   (Read only).


Would it be possible to say make a level 0 dump every night, a level 1
dump every hour, and a level 2 dump every 5 minutes (or use even more
levels?) and then restore these dumps on the clients to keep their volumes
synchronised?

Reason I'm asking this is I'm looking for a way to distribute only changes
in a filesystem. Rsync has to scan the whole filesystem and just takes to
long.


Groet,

-- 
Matthijs van der Klip - Unix Administrator
NOS - Dutch Public Broadcasting Organisation
http://www.omroep.nl


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