Re: [SLE] Directory structure replication

Michael.James_at_csiro.au
Date: 07/25/03

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    To: suse-linux-e@suse.com
Date: Fri, 25 Jul 2003 10:39:04 +1000

    On Thu, 24 Jul 2003 11:27 pm, Jose J. Cintron wrote:
    > I need to replicate the whole directory structure (including
    > permissions, specially permissions) for a volume from one server to
    > another.
    >
    > I have a volume called /data, in it there are about 500-600 directories
    > and I need to replicate this whole structure (with permissions to a new
    > server) What would be the easiest way to do this??? Ideas,
    > suggestions? TIA!

    There have been several good suggestions as to how to do this initially.

    However "rsync" is a tool that will not just make the initial copy
     but bring it back up to date. It is essentially a more fully featured "cp".

    eg: You are moving a lot of users to a new server
     and want to copy their home dirs over.
    Directories, files, ownerships, permissions, the lot.

    If the old server trusts the new using rsh
    new-server# rsync -a old-server:/home/users/ /home/users/

    Or using ssh, you don't need trust, ssh can prompt for a password
     (but if it's a big copy encryption will slow it down)
    new-server# rsync -ae ssh old-server:/home/users/ /home/users/

    If there are a lot of files, the initial copy can take ages,
     but with rsync you can do this ahead of time,
     then redo it quickly (only changed files get copied)
     during a brief changeover downtime.

    If you want rsync to set ownerships, you will need to run it as root.
    Very fully featured,
     can be set to treat links however you like,
     exclude certain files or dirs,
     delete (or not) files missing in the source.

    For more info
            man rsync
    or rsync --help

    Note that default installs of Suse don't have it.
    It's in Productivity:Network:Other, well worth having.

    Enjoy,
    michaelj 

    -- 
Michael James				michael.james@csiro.au
System Administrator			voice:	02 6246 5040
CSIRO Bioinformatics Facility	fax:		02 6246 5166
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