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Manual Reference Pages  -  VM::EC2::BLOCKDEVICE::MAPPING (3)

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NAME

VM::EC2::BlockDevice::Mapping - Object describing an EC2 block device attached to an instance

CONTENTS

SYNOPSIS



  use VM::EC2;

  $ec2        = VM::EC2->new(...);
  $instance   = $ec2->describe_instances(-instance_id=>i-123456);
  my @devices   = $instance->blockDeviceMapping;
  for my $dev (@devices) {
    $dev       = $dev->deviceName;
    $volume_id = $dev->volumeId;
    $status    = $dev->status;
    $atime     = $dev->attachmentTime;
    $delete    = $dev->deleteOnTermination;
    $volume    = $dev->volume;
  }



DESCRIPTION

This object represents an Amazon block device associated with an instance; it is returned by Instance->blockDeviceMapping().

Please see VM::EC2::Generic for methods shared by all VM::EC2 objects.

METHODS

These object methods are supported:



 deviceName  -- Name of the device, such as /dev/sda1.
 instance    -- Instance object associated with this volume.
 ebs         -- A VM::EC2::BlockDevice::Mapping::EBS object
                describing the characteristics of the attached
                EBS volume



For your convenience, a number of the ebs() object’s methods are passed through:



 volumeId         -- ID of the volume.
 status           -- One of "attaching", "attached", "detaching", "detached"
 attachTime       -- Time this volume was attached
 deleteOnTermination -- Whether the volume will be deleted when its attached
                   instance is deleted. Note that this will return perl true/false
                   vales, rather than the strings "true" "false".



The deleteOnTermination() method can be used to retrieve or modify this flag:



 # get current deleteOnTermination flag
 my $current_flag = $dev->deleteOnTermination;

 # if flag is true, then set it to false
 if ($current_flag) { $dev->deleteOnTermination(0) }



In addition, the following convenience function is provided:

CW$volume = CW$dev->volume

This returns a VM::EC2::Volume object from which more information about the volume, such as its size, can be derived.

STRING OVERLOADING

When used in a string context, this object will be interpolated as the deviceName.

SEE ALSO

VM::EC2 VM::EC2::Generic VM::EC2::BlockDevice VM::EC2::BlockDevice::Attachment VM::EC2::BlockDevice::Mapping::EBS VM::EC2::Volume

AUTHOR

Lincoln Stein <lincoln.stein@gmail.com>.

Copyright (c) 2011 Ontario Institute for Cancer Research

This package and its accompanying libraries is free software; you can redistribute it and/or modify it under the terms of the GPL (either version 1, or at your option, any later version) or the Artistic License 2.0. Refer to LICENSE for the full license text. In addition, please see DISCLAIMER.txt for disclaimers of warranty.

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perl v5.20.3 VM::EC2::BLOCKDEVICE::MAPPING (3) 2016-04-03

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