test.rb

#
# Incrental rsync backups using rsync's --link-dest
#
# This requires the 'develop' branch of the backup gem
#

require 'net/ssh'

Backup::Model.new(:test, 'Description for test') do

  ip         = '10.64.160.218'
  port       = '22'
  username   = 'nathan'
  base_path  = '/srv/backup/test'
  new_backup = DateTime.now.strftime('%Y%m%d%H%M%S')
  old_backup = 'old'

  after do |model|
    Net::SSH.start(ip, username) do |ssh|
      ssh.exec "rm  #{base_path}/#{old_backup} && ln -s #{base_path}/#{new_backup} #{base_path}/#{old_backup}"
    end
  end

  sync_with RSync::Push do |rsync|
    rsync.ip       = ip
    rsync.port     = port
    rsync.username = username
    rsync.path     = base_path + '/' + new_backup
    rsync.mirror   = true
    rsync.compress = true
    rsync.additional_options = ["--link-dest #{base_path}/#{old_backup}"]
    rsync.directories do |directory|
      directory.add '/home/nathan/tmp/test'
    end
  end

end