Remote Tracking/Mirroring

[Les Mikesell]

Jonathan Allen wrote:
> Hi All,
> 
> I'm looking to set up some kind of remote tracking or mirroring of a
> filesystem.  My thought was to write a mount-handler, mount the
> filestore using that device type and have the handler simply pass
> through all the transations to a normal ext3 filesystem underneath.
> Then pass any write-type activies over a socket to a user-mode
> program on another machine to mimic the action in the target filestore.
> 
> I didn't want to do a block-level mimic adn I did want to allow the
> target filestore to be just an ordinary filestore, probably containing
> other stuff, or having the target in just one part of a large volume.
> 
> Does this exist, or is anyone doing something like this ?  I want to
> be able to have a 'hot' backup of one machine on another remote machine,
> including all activity to date, up to the minute.

Drbd http://www.drbd.org/ does it live.  If you can live with periodic 
snapshots instead, you can do it with rsync.

-- 
   Les Mikesell
    lesmikesell at gmail.com