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

       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.

perl v5.38.2                                       2024-08-10                 VM::EC2::BlockDevice::Mapping(3pm)

       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.

       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:

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

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

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

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

         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;
         }