Class: CopyAmi::AmiSnapshotCreatedState

Inherits:

CopyAmiState

• Object
• ScriptExecutionState
• CopyAmiState
• CopyAmi::AmiSnapshotCreatedState

Defined in:

lib/scripts/ec2/copy_ami.rb

Overview

Snapshot is created from the AMI. Create a volume from the snapshot, attach and mount the volume as second device.

Instance Attribute Summary

Attributes inherited from ScriptExecutionState

#context, #logger

Instance Method Summary

• #enter ⇒ Object

Methods inherited from CopyAmiState

load_state, #local_region, #remote_region

Methods inherited from ScriptExecutionState

#done?, #end_state, #failed?, #get_superclass_name, #initialize, #register_state_change_listener, #start_state_machine, #to_s

Methods included from StateTransitionHelper

#attach_volume, #connect, #copy_distribution, #create_fs, #create_image_from_instance, #create_labeled_fs, #create_security_group_with_rules, #create_snapshot, #create_volume, #create_volume_from_snapshot, #delete_security_group, #delete_snapshot, #delete_volume, #describe_instance, #detach_volume, #determine_file, #disable_ssh_tty, #disconnect, #ec2_handler, #ec2_handler=, #enable_ssh_tty, #get_aws_kernel_image_aki, #get_aws_region_from_endpoint, #get_partition_count, #get_partition_fs_type, #get_partition_fs_type_and_label, #get_partition_label, #get_partition_table, #get_root_device_name, #get_root_partition_fs_type, #get_root_partition_fs_type_and_label, #get_root_partition_label, #get_root_volume_id, #launch_instance, #local_decompress_and_dump_file_to_device, #local_dump_and_compress_device_to_file, #local_dump_device_to_file, #local_dump_file_to_device, #mount_fs, #mount_fs_old, #register_snapshot, #remote_copy, #remote_copy_old, #remote_handler, #remote_handler=, #retrieve_instances, #retrieve_security_groups, #set_partition_table, #shut_down_instance, #snapshot_accessible, #start_instance, #stop_instance, #unmount_fs, #upload_file, #zip_volume

Methods included from VCloudTransitionHelper

#retrieve_ip_services

Constructor Details

This class inherits a constructor from ScriptExecutionState

Instance Method Details

#enter ⇒ Object

# File 'lib/scripts/ec2/copy_ami.rb', line 194

def enter()
  @context[:source_volume_id] = create_volume_from_snapshot(@context[:snapshot_id],
    @context[:source_availability_zone])
  device = @context[:temp_device_name]
  mount_point = "/mnt/tmp_#{@context[:source_volume_id]}"
  #XXX: attach volume after root partition detection
  #attach_volume(@context[:source_volume_id], @context[:source_instance_id], device)
  connect(@context[:source_dns_name], @context[:source_ssh_username], nil, @context[:source_ssh_keydata]) 
  # detect if there is a shift for device mapping (between AWS and the operating system of the system)
  root_device_name = get_root_device_name()
  # detect letters
  aws_root_device = @context[:root_device_name]
  aws_letter = aws_root_device.split('/')[2].gsub('sd', '').gsub('xvd', '').gsub(/[0-9]/, '')
  os_letter = root_device_name.split('/')[2].gsub('sd', '').gsub('xvd', '').gsub(/[0-9]/, '')
  aws_device_letter = device.split('/')[2].gsub('sd', '').gsub('xvd', '').gsub(/[0-9]/, '')
  if !aws_letter.eql?(os_letter)
    post_message("Detected specific kernel with shift between AWS and Kernel OS for device naming: '#{aws_root_device}' vs '#{root_device_name}'")
  end
  while !aws_letter.eql?(os_letter)
    aws_letter.succ!
    aws_device_letter.succ!
  end

  # attach volume
  attach_volume(@context[:source_volume_id], @context[:source_instance_id], device, Ec2Script::CS_AWS_TIMEOUT)

  device = "/dev/sd#{aws_device_letter}"
  # detect root partition vs root volume: simply check if we have several /dev/sdx* entries
  parts_count = get_partition_count(device)
  if parts_count >= 2
    # retrieve partition table, in order to restore it in the target region
    post_message("Detected specific volume with a valid partition table on device '#{device}'...")
    partition_table = get_partition_table(device)
    @context[:partition_table] = partition_table
    #XXX: HANDLE at a LOWER LEVEL
    # update partition table with device
    # s/device/@context[:temp_device_name]/ on partition table 
    #@context[:partition_table] = partition_table.gsub("#{device}", "#{@context[:temp_device_name]}")
    # retrieve the root partition number
    os_nb = root_device_name.split('/')[2].gsub('sd', '').gsub('xvd', '').gsub(/[a-z]/, '')
    device = device + os_nb
    @context[:root_partition_nb] = os_nb
    post_message("Using root partition: '#{device}'...")
  end
  post_message("Using AWS name '#{@context[:temp_device_name]}' and OS name '#{device}'")
  mount_fs(mount_point, device)
  # get root partition label and filesystem type
  #@context[:label] = get_root_partition_label()
  #@context[:fs_type] = get_root_partition_fs_type()
  @context[:fs_type], @context[:label] = get_root_partition_fs_type_and_label()
  disconnect()

  SourceVolumeReadyState.new(@context)
end