# File lib/deltacloud/drivers/rackspace/rackspace_driver.rb, line 310
  def update_blob_metadata(credentials, opts={})
    cf = cloudfiles_client(credentials)
    meta_hash = opts['meta_hash']
    #the set_metadata method actually places the 'X-Object-Meta-' prefix for us:
    meta_hash.gsub_keys('HTTP_X_Deltacloud_Blobmeta_', '')
    safely do
      blob = cf.container(opts['bucket']).object(opts[:id])
      blob.set_metadata(meta_hash)
    end 
  end