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Riccardo Magrini
Asked: 2011-02-24 13:15:02 +0800 CST

to clone a filesystem from a remote system to a local HD

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I'd make a backup of a entire remote filesystem ext3 to a local HD. This operation has to be made using ssh. The backup has to be get from the Client PC and not give to the Server. I hope was clear to explain my issue.

Some one could suggest me how to resolve it?

thank you so much!

filesystem

3 Answers

  1. Best Answer

    I suggest using rsync, which can operate over ssh.

    rsync -cavz user@remote_host:/remote/path /local/destination

    (rsync must be installed on both sides)

    rsync is designed to transfer directories from one machine to another using as little bandwidth as possible. By default, it only transfers the deltas between the source and destination.

    The options above (-cavz) are the ones I normally use, and tell it to (-c) check checksums; (-a) preserve permissions, timestamps, symlinks, etc.; (-v) be verbose; and (-z) compress the transferred data.

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  2. The traditional method is to do something along the lines of:

    • On server create an archive of the files to transfer. tar or cpio are typical commands for this.
    • Transfer the archive across the network
    • On client extract the client archive into the final location.

    You can either do this step by step, or use unix pipes and tell the archive commands to use pipes instead of actual file archives.

    In the old days, I did the following on the machine with the files:

    tar cf - . | rsh remotemachine tar xvBpf -

    You could probably get things running with a command similar to 

    ssh servermachine "tar -C /location -cf - ." | tar xvf -

    Good luck

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