The following two new cookbooks are published from RightScale today.
marker - http://community.opscode.com/cookbooks/marker
Provides a way to create a visual marker in the Chef log based on a template.
ephemeral_lvm - http://community.opscode.com/cookbooks/ephemeral_lvm
Configures available ephemeral devices on a cloud server.
Cookbook Team, RightScale Inc.