AvailableDevice finds an available device and returns it.

The unique ID for this builder.

See: http://linux.die.net/include/sys/file.h.

Config is the configuration that is chained through the steps and settable from the template.

FlatConfig is an auto-generated flat version of Config.

StepAttachVolume attaches the previously created volume to an available device location.

StepCheckRootDevice makes sure the root device on the AMI is EBS-backed.

StepCreateVolume creates a new volume from the snapshot of the root device of the AMI.

StepEarlyUnflock unlocks the flock.

StepFlock provisions the instance within a chroot.

StepInstanceInfo verifies that this builder is running on an EC2 instance.

StepMountDevice mounts the attached device.

StepPrepareDevice finds an available device and sets it.

StepRegisterAMI creates the AMI.

StepSnapshot creates a snapshot of the created volume.