Skip to content

Instantly share code, notes, and snippets.

@vzool
Forked from KartikTalwar/Documentation.md
Created May 8, 2016 03:03
Show Gist options
  • Save vzool/c887dbdf98fdc2e3949ba0be559dfb11 to your computer and use it in GitHub Desktop.
Save vzool/c887dbdf98fdc2e3949ba0be559dfb11 to your computer and use it in GitHub Desktop.
Rsync over SSH - (40MB/s over 1GB NICs)

The fastest remote directory rsync over ssh archival I can muster (40MB/s over 1gb NICs)

This creates an archive that does the following:

rsync (Everyone seems to like -z, but it is much slower for me)

  • 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]
rsync -aHAXxv --numeric-ids --delete --progress -e "ssh -T -c arcfour -o Compression=no -x" user@<source>:<source_dir> <dest_dir>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment