recipe.rb

include_recipe "aws"
include_recipe "ec2-consistent-snapshot"

ruby_block "get attached ebs volumes" do
  block do
    # volumes = Opscode::Aws::Ec2.ec2.describe_volumes.detect{ |v| v[:aws_instance_id] == instance_id }
    run_context["ebs_volumes"] = ["vol-abcd123"]
  end
end

ec2_consistent_snapshot_wrapper "/usr/bin/mysql_snapshot" do
  freeze_filesystem "/var/lib/mysql"
  volumes           run_context["ebs_volumes"]
end