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Rsync over ssh - 40MB/s, 1GB Network

This creates an archive that does the following:

rsync (Everyone seems to like -z, but it is much slower by our opinion)

  • a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files.
  • H: preserves hard-links
  • A: preserves ACLs
  • X: preserves extended attributes
  • x: don't cross file-system boundaries
  • v: increase verbosity
  • --numeric-ds: don't map uid/gid values by user/group name
  • --delete: delete extraneous files from dest dirs (differential clean-up during sync)
  • --progress: show progress during transfer

    • ssh

  • T: turn off pseudo-tty to decrease cpu load on destination.
  • c arcfour: use the weakest but fastest SSH encryption. Must specify "Ciphers arcfour" in sshd_config on destination.
  • o Compression=no: Turn off SSH compression.
  • x: turn off X forwarding if it is on by default.

    • Original

    rsync -aHAXxv --numeric-ids --delete --progress -e "ssh -T -c arcfour -o Compression=no -x" user@[source]:[source_dir] [dest_dir]

    Flip

    rsync -aHAXxv --numeric-ids --delete --progress -e "ssh -T -c arcfour -o Compression=no -x" [source_dir] [dest_host:/dest_dir]

    SSHrsync.sh

    rsync -aHAXxv --numeric-ids --delete --progress -e "ssh -T -c arcfour -o Compression=no -x" user@[source]:[source_dir] [dest_dir]
    MicroData:
    Also available:  Romanian